-/*\r
-Copyright (C) 1999-2007 id Software, Inc. and contributors.\r
-For a list of contributors, see the accompanying CONTRIBUTORS file.\r
-\r
-This file is part of GtkRadiant.\r
-\r
-GtkRadiant is free software; you can redistribute it and/or modify\r
-it under the terms of the GNU General Public License as published by\r
-the Free Software Foundation; either version 2 of the License, or\r
-(at your option) any later version.\r
-\r
-GtkRadiant is distributed in the hope that it will be useful,\r
-but WITHOUT ANY WARRANTY; without even the implied warranty of\r
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
-GNU General Public License for more details.\r
-\r
-You should have received a copy of the GNU General Public License\r
-along with GtkRadiant; if not, write to the Free Software\r
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\r
-*/\r
-\r
-#include "stdafx.h"\r
-\r
-// compute a determinant using Sarrus rule\r
-//++timo "inline" this with a macro\r
-// NOTE : the three vec3_t are understood as columns of the matrix\r
-vec_t SarrusDet(vec3_t a, vec3_t b, vec3_t c)\r
-{\r
- return a[0]*b[1]*c[2]+b[0]*c[1]*a[2]+c[0]*a[1]*b[2]\r
- -c[0]*b[1]*a[2]-a[1]*b[0]*c[2]-a[0]*b[2]*c[1];\r
-}\r
-\r
-// in many case we know three points A,B,C in two axis base B1 and B2\r
-// and we want the matrix M so that A(B1) = T * A(B2)\r
-// NOTE: 2D homogeneous space stuff\r
-// NOTE: we don't do any check to see if there's a solution or we have a particular case .. need to make sure before calling\r
-// NOTE: the third coord of the A,B,C point is ignored\r
-// NOTE: see the commented out section to fill M and D\r
-//++timo TODO: update the other members to use this when possible\r
-void MatrixForPoints( vec3_t M[3], vec3_t D[2], brushprimit_texdef_t *T )\r
-{\r
-// vec3_t M[3]; // columns of the matrix .. easier that way (the indexing is not standard! it's column-line .. later computations are easier that way)\r
- vec_t det;\r
-// vec3_t D[2];\r
- M[2][0]=1.0f; M[2][1]=1.0f; M[2][2]=1.0f;\r
-#if 0\r
- // fill the data vectors\r
- M[0][0]=A2[0]; M[0][1]=B2[0]; M[0][2]=C2[0];\r
- M[1][0]=A2[1]; M[1][1]=B2[1]; M[1][2]=C2[1];\r
- M[2][0]=1.0f; M[2][1]=1.0f; M[2][2]=1.0f;\r
- D[0][0]=A1[0];\r
- D[0][1]=B1[0];\r
- D[0][2]=C1[0];\r
- D[1][0]=A1[1];\r
- D[1][1]=B1[1];\r
- D[1][2]=C1[1];\r
-#endif\r
- // solve\r
- det = SarrusDet( M[0], M[1], M[2] );\r
- T->coords[0][0] = SarrusDet( D[0], M[1], M[2] ) / det;\r
- T->coords[0][1] = SarrusDet( M[0], D[0], M[2] ) / det;\r
- T->coords[0][2] = SarrusDet( M[0], M[1], D[0] ) / det;\r
- T->coords[1][0] = SarrusDet( D[1], M[1], M[2] ) / det;\r
- T->coords[1][1] = SarrusDet( M[0], D[1], M[2] ) / det;\r
- T->coords[1][2] = SarrusDet( M[0], M[1], D[1] ) / det;\r
-}\r
-\r
-//++timo replace everywhere texX by texS etc. ( ----> and in q3map !) \r
-// NOTE : ComputeAxisBase here and in q3map code must always BE THE SAME !\r
-// WARNING : special case behaviour of atan2(y,x) <-> atan(y/x) might not be the same everywhere when x == 0\r
-// rotation by (0,RotY,RotZ) assigns X to normal\r
-void ComputeAxisBase(vec3_t normal,vec3_t texS,vec3_t texT )\r
-{\r
- vec_t RotY,RotZ;\r
- // do some cleaning\r
- if (fabs(normal[0])<1e-6)\r
- normal[0]=0.0f;\r
- if (fabs(normal[1])<1e-6)\r
- normal[1]=0.0f;\r
- if (fabs(normal[2])<1e-6)\r
- normal[2]=0.0f;\r
- RotY=-atan2(normal[2],sqrt(normal[1]*normal[1]+normal[0]*normal[0]));\r
- RotZ=atan2(normal[1],normal[0]);\r
- // rotate (0,1,0) and (0,0,1) to compute texS and texT\r
- texS[0]=-sin(RotZ);\r
- texS[1]=cos(RotZ);\r
- texS[2]=0;\r
- // the texT vector is along -Z ( T texture coorinates axis )\r
- texT[0]=-sin(RotY)*cos(RotZ);\r
- texT[1]=-sin(RotY)*sin(RotZ);\r
- texT[2]=-cos(RotY);\r
-}\r
-\r
-void FaceToBrushPrimitFace(face_t *f)\r
-{\r
- vec3_t texX,texY;\r
- vec3_t proj;\r
- // ST of (0,0) (1,0) (0,1)\r
- vec_t ST[3][5]; // [ point index ] [ xyz ST ]\r
- //++timo not used as long as brushprimit_texdef and texdef are static\r
-/* f->brushprimit_texdef.contents=f->texdef.contents;\r
- f->brushprimit_texdef.flags=f->texdef.flags;\r
- f->brushprimit_texdef.value=f->texdef.value;\r
- strcpy(f->brushprimit_texdef.name,f->texdef.name); */\r
-#ifdef DBG_BP\r
- if ( f->plane.normal[0]==0.0f && f->plane.normal[1]==0.0f && f->plane.normal[2]==0.0f )\r
- {\r
- Sys_Printf("Warning : f->plane.normal is (0,0,0) in FaceToBrushPrimitFace\n");\r
- }\r
- // check d_texture\r
- if (!f->d_texture)\r
- {\r
- Sys_Printf("Warning : f.d_texture is NULL in FaceToBrushPrimitFace\n");\r
- return;\r
- }\r
-#endif\r
- // compute axis base\r
- ComputeAxisBase(f->plane.normal,texX,texY);\r
- // compute projection vector\r
- VectorCopy(f->plane.normal,proj);\r
- VectorScale(proj,f->plane.dist,proj);\r
- // (0,0) in plane axis base is (0,0,0) in world coordinates + projection on the affine plane\r
- // (1,0) in plane axis base is texX in world coordinates + projection on the affine plane\r
- // (0,1) in plane axis base is texY in world coordinates + projection on the affine plane\r
- // use old texture code to compute the ST coords of these points\r
- VectorCopy(proj,ST[0]);\r
- EmitTextureCoordinates(ST[0], f->d_texture, f);\r
- VectorCopy(texX,ST[1]);\r
- VectorAdd(ST[1],proj,ST[1]);\r
- EmitTextureCoordinates(ST[1], f->d_texture, f);\r
- VectorCopy(texY,ST[2]);\r
- VectorAdd(ST[2],proj,ST[2]);\r
- EmitTextureCoordinates(ST[2], f->d_texture, f);\r
- // compute texture matrix\r
- f->brushprimit_texdef.coords[0][2]=ST[0][3];\r
- f->brushprimit_texdef.coords[1][2]=ST[0][4];\r
- f->brushprimit_texdef.coords[0][0]=ST[1][3]-f->brushprimit_texdef.coords[0][2];\r
- f->brushprimit_texdef.coords[1][0]=ST[1][4]-f->brushprimit_texdef.coords[1][2];\r
- f->brushprimit_texdef.coords[0][1]=ST[2][3]-f->brushprimit_texdef.coords[0][2];\r
- f->brushprimit_texdef.coords[1][1]=ST[2][4]-f->brushprimit_texdef.coords[1][2];\r
-}\r
-\r
-// compute texture coordinates for the winding points\r
-void EmitBrushPrimitTextureCoordinates(face_t * f, winding_t * w)\r
-{\r
- vec3_t texX,texY;\r
- vec_t x,y;\r
- // compute axis base\r
- ComputeAxisBase(f->plane.normal,texX,texY);\r
- // in case the texcoords matrix is empty, build a default one\r
- // same behaviour as if scale[0]==0 && scale[1]==0 in old code\r
- if (f->brushprimit_texdef.coords[0][0]==0 && f->brushprimit_texdef.coords[1][0]==0 && f->brushprimit_texdef.coords[0][1]==0 && f->brushprimit_texdef.coords[1][1]==0)\r
- {\r
- f->brushprimit_texdef.coords[0][0] = 1.0f;\r
- f->brushprimit_texdef.coords[1][1] = 1.0f;\r
- ConvertTexMatWithQTexture( &f->brushprimit_texdef, NULL, &f->brushprimit_texdef, f->d_texture );\r
- }\r
- int i;\r
- for (i=0 ; i<w->numpoints ; i++)\r
- {\r
- x=DotProduct(w->points[i],texX);\r
- y=DotProduct(w->points[i],texY);\r
-#ifdef DBG_BP\r
- if (g_qeglobals.bNeedConvert)\r
- {\r
- // check we compute the same ST as the traditional texture computation used before\r
- vec_t S=f->brushprimit_texdef.coords[0][0]*x+f->brushprimit_texdef.coords[0][1]*y+f->brushprimit_texdef.coords[0][2];\r
- vec_t T=f->brushprimit_texdef.coords[1][0]*x+f->brushprimit_texdef.coords[1][1]*y+f->brushprimit_texdef.coords[1][2];\r
- if ( fabs(S-w->points[i][3])>1e-2 || fabs(T-w->points[i][4])>1e-2 )\r
- {\r
- if ( fabs(S-w->points[i][3])>1e-4 || fabs(T-w->points[i][4])>1e-4 )\r
- Sys_Printf("Warning : precision loss in brush -> brush primitive texture computation\n");\r
- else\r
- Sys_Printf("Warning : brush -> brush primitive texture computation bug detected\n");\r
- }\r
- }\r
-#endif\r
- w->points[i][3]=f->brushprimit_texdef.coords[0][0]*x+f->brushprimit_texdef.coords[0][1]*y+f->brushprimit_texdef.coords[0][2];\r
- w->points[i][4]=f->brushprimit_texdef.coords[1][0]*x+f->brushprimit_texdef.coords[1][1]*y+f->brushprimit_texdef.coords[1][2];\r
- }\r
-}\r
-\r
-// compute a fake shift scale rot representation from the texture matrix\r
-// these shift scale rot values are to be understood in the local axis base\r
-void TexMatToFakeTexCoords( vec_t texMat[2][3], float shift[2], float *rot, float scale[2] )\r
-{\r
-#ifdef DBG_BP\r
- // check this matrix is orthogonal\r
- if (fabs(texMat[0][0]*texMat[0][1]+texMat[1][0]*texMat[1][1])>ZERO_EPSILON)\r
- Sys_Printf("Warning : non orthogonal texture matrix in TexMatToFakeTexCoords\n");\r
-#endif\r
- scale[0]=sqrt(texMat[0][0]*texMat[0][0]+texMat[1][0]*texMat[1][0]);\r
- scale[1]=sqrt(texMat[0][1]*texMat[0][1]+texMat[1][1]*texMat[1][1]);\r
-#ifdef DBG_BP\r
- if (scale[0]<ZERO_EPSILON || scale[1]<ZERO_EPSILON)\r
- Sys_Printf("Warning : unexpected scale==0 in TexMatToFakeTexCoords\n");\r
-#endif\r
- // compute rotate value\r
- if (fabs(texMat[0][0])<ZERO_EPSILON)\r
- {\r
-#ifdef DBG_BP\r
- // check brushprimit_texdef[1][0] is not zero\r
- if (fabs(texMat[1][0])<ZERO_EPSILON)\r
- Sys_Printf("Warning : unexpected texdef[1][0]==0 in TexMatToFakeTexCoords\n");\r
-#endif\r
- // rotate is +-90\r
- if (texMat[1][0]>0)\r
- *rot=90.0f;\r
- else\r
- *rot=-90.0f;\r
- }\r
- else\r
- *rot = RAD2DEG( atan2( texMat[1][0], texMat[0][0] ) );\r
- shift[0] = -texMat[0][2];\r
- shift[1] = texMat[1][2];\r
-}\r
-\r
-// compute back the texture matrix from fake shift scale rot\r
-// the matrix returned must be understood as a qtexture_t with width=2 height=2 ( the default one )\r
-void FakeTexCoordsToTexMat( float shift[2], float rot, float scale[2], vec_t texMat[2][3] )\r
-{\r
- texMat[0][0] = scale[0] * cos( DEG2RAD( rot ) );\r
- texMat[1][0] = scale[0] * sin( DEG2RAD( rot ) );\r
- texMat[0][1] = -1.0f * scale[1] * sin( DEG2RAD( rot ) );\r
- texMat[1][1] = scale[1] * cos( DEG2RAD( rot ) );\r
- texMat[0][2] = -shift[0];\r
- texMat[1][2] = shift[1];\r
-}\r
-\r
-// convert a texture matrix between two qtexture_t\r
-// if NULL for qtexture_t, basic 2x2 texture is assumed ( straight mapping between s/t coordinates and geometric coordinates )\r
-void ConvertTexMatWithQTexture( vec_t texMat1[2][3], qtexture_t *qtex1, vec_t texMat2[2][3], qtexture_t *qtex2 )\r
-{\r
- float s1,s2;\r
- s1 = ( qtex1 ? static_cast<float>( qtex1->width ) : 2.0f ) / ( qtex2 ? static_cast<float>( qtex2->width ) : 2.0f );\r
- s2 = ( qtex1 ? static_cast<float>( qtex1->height ) : 2.0f ) / ( qtex2 ? static_cast<float>( qtex2->height ) : 2.0f );\r
- texMat2[0][0]=s1*texMat1[0][0];\r
- texMat2[0][1]=s1*texMat1[0][1];\r
- texMat2[0][2]=s1*texMat1[0][2];\r
- texMat2[1][0]=s2*texMat1[1][0];\r
- texMat2[1][1]=s2*texMat1[1][1];\r
- texMat2[1][2]=s2*texMat1[1][2];\r
-}\r
-\r
-void ConvertTexMatWithQTexture( brushprimit_texdef_t *texMat1, qtexture_t *qtex1, brushprimit_texdef_t *texMat2, qtexture_t *qtex2 )\r
-{\r
- ConvertTexMatWithQTexture(texMat1->coords, qtex1, texMat2->coords, qtex2);\r
-}\r
-\r
-// used for texture locking\r
-// will move the texture according to a geometric vector\r
-void ShiftTextureGeometric_BrushPrimit(face_t *f, vec3_t delta)\r
-{\r
- vec3_t texS,texT;\r
- vec_t tx,ty;\r
- vec3_t M[3]; // columns of the matrix .. easier that way\r
- vec_t det;\r
- vec3_t D[2];\r
- // compute plane axis base ( doesn't change with translation )\r
- ComputeAxisBase( f->plane.normal, texS, texT );\r
- // compute translation vector in plane axis base\r
- tx = DotProduct( delta, texS );\r
- ty = DotProduct( delta, texT );\r
- // fill the data vectors\r
- M[0][0]=tx; M[0][1]=1.0f+tx; M[0][2]=tx;\r
- M[1][0]=ty; M[1][1]=ty; M[1][2]=1.0f+ty;\r
- M[2][0]=1.0f; M[2][1]=1.0f; M[2][2]=1.0f;\r
- D[0][0]=f->brushprimit_texdef.coords[0][2];\r
- D[0][1]=f->brushprimit_texdef.coords[0][0]+f->brushprimit_texdef.coords[0][2];\r
- D[0][2]=f->brushprimit_texdef.coords[0][1]+f->brushprimit_texdef.coords[0][2];\r
- D[1][0]=f->brushprimit_texdef.coords[1][2];\r
- D[1][1]=f->brushprimit_texdef.coords[1][0]+f->brushprimit_texdef.coords[1][2];\r
- D[1][2]=f->brushprimit_texdef.coords[1][1]+f->brushprimit_texdef.coords[1][2];\r
- // solve\r
- det = SarrusDet( M[0], M[1], M[2] );\r
- f->brushprimit_texdef.coords[0][0] = SarrusDet( D[0], M[1], M[2] ) / det;\r
- f->brushprimit_texdef.coords[0][1] = SarrusDet( M[0], D[0], M[2] ) / det;\r
- f->brushprimit_texdef.coords[0][2] = SarrusDet( M[0], M[1], D[0] ) / det;\r
- f->brushprimit_texdef.coords[1][0] = SarrusDet( D[1], M[1], M[2] ) / det;\r
- f->brushprimit_texdef.coords[1][1] = SarrusDet( M[0], D[1], M[2] ) / det;\r
- f->brushprimit_texdef.coords[1][2] = SarrusDet( M[0], M[1], D[1] ) / det;\r
-}\r
-\r
-// shift a texture (texture adjustments) along it's current texture axes\r
-// x and y are geometric values, which we must compute as ST increments\r
-// this depends on the texture size and the pixel/texel ratio\r
-void ShiftTextureRelative_BrushPrimit( face_t *f, float x, float y)\r
-{\r
- float s,t;\r
- // as a ratio against texture size\r
- // the scale of the texture is not relevant here (we work directly on a transformation from the base vectors)\r
- s = (x * 2.0) / (float)f->d_texture->width;\r
- t = (y * 2.0) / (float)f->d_texture->height;\r
- f->brushprimit_texdef.coords[0][2] -= s;\r
- f->brushprimit_texdef.coords[1][2] -= t;\r
-}\r
-\r
-// TTimo: FIXME: I don't like that, it feels broken\r
-// (and it's likely that it's not used anymore)\r
-// best fitted 2D vector is x.X+y.Y\r
-void ComputeBest2DVector( vec3_t v, vec3_t X, vec3_t Y, int &x, int &y )\r
-{\r
- double sx,sy;\r
- sx = DotProduct( v, X );\r
- sy = DotProduct( v, Y );\r
- if ( fabs(sy) > fabs(sx) )\r
- {\r
- x = 0;\r
- if ( sy > 0.0 )\r
- y = 1;\r
- else\r
- y = -1;\r
- }\r
- else\r
- {\r
- y = 0;\r
- if ( sx > 0.0 )\r
- x = 1;\r
- else\r
- x = -1;\r
- }\r
-}\r
-\r
-//++timo FIXME quick'n dirty hack, doesn't care about current texture settings (angle)\r
-// can be improved .. bug #107311\r
-// mins and maxs are the face bounding box\r
-//++timo fixme: we use the face info, mins and maxs are irrelevant\r
-void Face_FitTexture_BrushPrimit( face_t *f, vec3_t mins, vec3_t maxs, int nHeight, int nWidth )\r
-{\r
- vec3_t BBoxSTMin, BBoxSTMax;\r
- winding_t *w;\r
- int i,j;\r
- vec_t val;\r
- vec3_t M[3],D[2];\r
-// vec3_t N[2],Mf[2];\r
- brushprimit_texdef_t N;\r
- vec3_t Mf[2];\r
-\r
-\r
- // we'll be working on a standardized texture size\r
-// ConvertTexMatWithQTexture( &f->brushprimit_texdef, f->d_texture, &f->brushprimit_texdef, NULL );\r
- // compute the BBox in ST coords\r
- EmitBrushPrimitTextureCoordinates( f, f->face_winding );\r
- ClearBounds( BBoxSTMin, BBoxSTMax );\r
- w = f->face_winding;\r
- for (i=0 ; i<w->numpoints ; i++)\r
- {\r
- // AddPointToBounds in 2D on (S,T) coordinates\r
- for (j=0 ; j<2 ; j++)\r
- {\r
- val = w->points[i][j+3];\r
- if (val < BBoxSTMin[j])\r
- BBoxSTMin[j] = val;\r
- if (val > BBoxSTMax[j])\r
- BBoxSTMax[j] = val;\r
- }\r
- }\r
- // we have the three points of the BBox (BBoxSTMin[0].BBoxSTMin[1]) (BBoxSTMax[0],BBoxSTMin[1]) (BBoxSTMin[0],BBoxSTMax[1]) in ST space\r
- // the BP matrix we are looking for gives (0,0) (nwidth,0) (0,nHeight) coordinates in (Sfit,Tfit) space to these three points\r
- // we have A(Sfit,Tfit) = (0,0) = Mf * A(TexS,TexT) = N * M * A(TexS,TexT) = N * A(S,T)\r
- // so we solve the system for N and then Mf = N * M\r
- M[0][0] = BBoxSTMin[0]; M[0][1] = BBoxSTMax[0]; M[0][2] = BBoxSTMin[0];\r
- M[1][0] = BBoxSTMin[1]; M[1][1] = BBoxSTMin[1]; M[1][2] = BBoxSTMax[1];\r
- D[0][0] = 0.0f; D[0][1] = nWidth; D[0][2] = 0.0f;\r
- D[1][0] = 0.0f; D[1][1] = 0.0f; D[1][2] = nHeight;\r
- MatrixForPoints( M, D, &N );\r
-\r
-#if 0\r
- // FIT operation gives coordinates of three points of the bounding box in (S',T'), our target axis base\r
- // A(S',T')=(0,0) B(S',T')=(nWidth,0) C(S',T')=(0,nHeight)\r
- // and we have them in (S,T) axis base: A(S,T)=(BBoxSTMin[0],BBoxSTMin[1]) B(S,T)=(BBoxSTMax[0],BBoxSTMin[1]) C(S,T)=(BBoxSTMin[0],BBoxSTMax[1])\r
- // we compute the N transformation so that: A(S',T') = N * A(S,T)\r
- VectorSet( N[0], (BBoxSTMax[0]-BBoxSTMin[0])/(float)nWidth, 0.0f, BBoxSTMin[0] );\r
- VectorSet( N[1], 0.0f, (BBoxSTMax[1]-BBoxSTMin[1])/(float)nHeight, BBoxSTMin[1] );\r
-#endif\r
-\r
- // the final matrix is the product (Mf stands for Mfit)\r
- Mf[0][0] = N.coords[0][0] * f->brushprimit_texdef.coords[0][0] + N.coords[0][1] * f->brushprimit_texdef.coords[1][0];\r
- Mf[0][1] = N.coords[0][0] * f->brushprimit_texdef.coords[0][1] + N.coords[0][1] * f->brushprimit_texdef.coords[1][1];\r
- Mf[0][2] = N.coords[0][0] * f->brushprimit_texdef.coords[0][2] + N.coords[0][1] * f->brushprimit_texdef.coords[1][2] + N.coords[0][2];\r
- Mf[1][0] = N.coords[1][0] * f->brushprimit_texdef.coords[0][0] + N.coords[1][1] * f->brushprimit_texdef.coords[1][0];\r
- Mf[1][1] = N.coords[1][0] * f->brushprimit_texdef.coords[0][1] + N.coords[1][1] * f->brushprimit_texdef.coords[1][1];\r
- Mf[1][2] = N.coords[1][0] * f->brushprimit_texdef.coords[0][2] + N.coords[1][1] * f->brushprimit_texdef.coords[1][2] + N.coords[1][2];\r
- // copy back\r
- VectorCopy( Mf[0], f->brushprimit_texdef.coords[0] );\r
- VectorCopy( Mf[1], f->brushprimit_texdef.coords[1] );\r
- // handle the texture size\r
-// ConvertTexMatWithQTexture( &f->brushprimit_texdef, NULL, &f->brushprimit_texdef, f->d_texture );\r
-}\r
-\r
-void BrushPrimitFaceToFace(face_t *face)\r
-{\r
- // we have parsed brush primitives and need conversion back to standard format\r
- // NOTE: converting back is a quick hack, there's some information lost and we can't do anything about it\r
- // FIXME: if we normalize the texture matrix to a standard 2x2 size, we end up with wrong scaling\r
- // I tried various tweaks, no luck .. seems shifting is lost\r
- brushprimit_texdef_t aux;\r
- ConvertTexMatWithQTexture( &face->brushprimit_texdef, face->d_texture, &aux, NULL );\r
- TexMatToFakeTexCoords( aux.coords, face->texdef.shift, &face->texdef.rotate, face->texdef.scale );\r
- face->texdef.scale[0]/=2.0;\r
- face->texdef.scale[1]/=2.0;\r
-}\r
-\r
-// TEXTURE LOCKING -----------------------------------------------------------------------------------------------------\r
-// (Relevant to the editor only?)\r
-\r
-// internally used for texture locking on rotation and flipping\r
-// the general algorithm is the same for both lockings, it's only the geometric transformation part that changes\r
-// so I wanted to keep it in a single function\r
-// if there are more linear transformations that need the locking, going to a C++ or code pointer solution would be best\r
-// (but right now I want to keep brush_primit.cpp striclty C)\r
-\r
-qboolean txlock_bRotation;\r
-\r
-// rotation locking params\r
-int txl_nAxis;\r
-float txl_fDeg;\r
-vec3_t txl_vOrigin;\r
-\r
-// flip locking params\r
-vec3_t txl_matrix[3];\r
-vec3_t txl_origin;\r
-\r
-void TextureLockTransformation_BrushPrimit(face_t *f)\r
-{\r
- vec3_t Orig,texS,texT; // axis base of initial plane\r
- // used by transformation algo\r
- vec3_t temp; int j;\r
- vec3_t vRotate; // rotation vector\r
-\r
- vec3_t rOrig,rvecS,rvecT; // geometric transformation of (0,0) (1,0) (0,1) { initial plane axis base }\r
- vec3_t rNormal,rtexS,rtexT; // axis base for the transformed plane\r
- vec3_t lOrig,lvecS,lvecT; // [2] are not used ( but usefull for debugging )\r
- vec3_t M[3];\r
- vec_t det;\r
- vec3_t D[2];\r
-\r
- // compute plane axis base\r
- ComputeAxisBase( f->plane.normal, texS, texT );\r
- VectorSet(Orig, 0.0f, 0.0f, 0.0f);\r
-\r
- // compute coordinates of (0,0) (1,0) (0,1) ( expressed in initial plane axis base ) after transformation\r
- // (0,0) (1,0) (0,1) ( expressed in initial plane axis base ) <-> (0,0,0) texS texT ( expressed world axis base )\r
- // input: Orig, texS, texT (and the global locking params)\r
- // ouput: rOrig, rvecS, rvecT, rNormal\r
- if (txlock_bRotation) {\r
- // rotation vector\r
- VectorSet( vRotate, 0.0f, 0.0f, 0.0f );\r
- vRotate[txl_nAxis]=txl_fDeg;\r
- VectorRotateOrigin ( Orig, vRotate, txl_vOrigin, rOrig );\r
- VectorRotateOrigin ( texS, vRotate, txl_vOrigin, rvecS );\r
- VectorRotateOrigin ( texT, vRotate, txl_vOrigin, rvecT );\r
- // compute normal of plane after rotation\r
- VectorRotate ( f->plane.normal, vRotate, rNormal );\r
- }\r
- else\r
- {\r
- VectorSubtract (Orig, txl_origin, temp);\r
- for (j=0 ; j<3 ; j++)\r
- rOrig[j] = DotProduct(temp, txl_matrix[j]) + txl_origin[j];\r
- VectorSubtract (texS, txl_origin, temp);\r
- for (j=0 ; j<3 ; j++)\r
- rvecS[j] = DotProduct(temp, txl_matrix[j]) + txl_origin[j];\r
- VectorSubtract (texT, txl_origin, temp);\r
- for (j=0 ; j<3 ; j++)\r
- rvecT[j] = DotProduct(temp, txl_matrix[j]) + txl_origin[j];\r
- // we also need the axis base of the target plane, apply the transformation matrix to the normal too..\r
- for (j=0 ; j<3 ; j++)\r
- rNormal[j] = DotProduct(f->plane.normal, txl_matrix[j]);\r
- }\r
-\r
- // compute rotated plane axis base\r
- ComputeAxisBase( rNormal, rtexS, rtexT );\r
- // compute S/T coordinates of the three points in rotated axis base ( in M matrix )\r
- lOrig[0] = DotProduct( rOrig, rtexS );\r
- lOrig[1] = DotProduct( rOrig, rtexT );\r
- lvecS[0] = DotProduct( rvecS, rtexS );\r
- lvecS[1] = DotProduct( rvecS, rtexT );\r
- lvecT[0] = DotProduct( rvecT, rtexS );\r
- lvecT[1] = DotProduct( rvecT, rtexT );\r
- M[0][0] = lOrig[0]; M[1][0] = lOrig[1]; M[2][0] = 1.0f;\r
- M[0][1] = lvecS[0]; M[1][1] = lvecS[1]; M[2][1] = 1.0f;\r
- M[0][2] = lvecT[0]; M[1][2] = lvecT[1]; M[2][2] = 1.0f;\r
- // fill data vector\r
- D[0][0]=f->brushprimit_texdef.coords[0][2];\r
- D[0][1]=f->brushprimit_texdef.coords[0][0]+f->brushprimit_texdef.coords[0][2];\r
- D[0][2]=f->brushprimit_texdef.coords[0][1]+f->brushprimit_texdef.coords[0][2];\r
- D[1][0]=f->brushprimit_texdef.coords[1][2];\r
- D[1][1]=f->brushprimit_texdef.coords[1][0]+f->brushprimit_texdef.coords[1][2];\r
- D[1][2]=f->brushprimit_texdef.coords[1][1]+f->brushprimit_texdef.coords[1][2];\r
- // solve\r
- det = SarrusDet( M[0], M[1], M[2] );\r
- f->brushprimit_texdef.coords[0][0] = SarrusDet( D[0], M[1], M[2] ) / det;\r
- f->brushprimit_texdef.coords[0][1] = SarrusDet( M[0], D[0], M[2] ) / det;\r
- f->brushprimit_texdef.coords[0][2] = SarrusDet( M[0], M[1], D[0] ) / det;\r
- f->brushprimit_texdef.coords[1][0] = SarrusDet( D[1], M[1], M[2] ) / det;\r
- f->brushprimit_texdef.coords[1][1] = SarrusDet( M[0], D[1], M[2] ) / det;\r
- f->brushprimit_texdef.coords[1][2] = SarrusDet( M[0], M[1], D[1] ) / det;\r
-}\r
-\r
-// texture locking\r
-// called before the points on the face are actually rotated\r
-void RotateFaceTexture_BrushPrimit(face_t *f, int nAxis, float fDeg, vec3_t vOrigin )\r
-{\r
- // this is a placeholder to call the general texture locking algorithm\r
- txlock_bRotation = true;\r
- txl_nAxis = nAxis;\r
- txl_fDeg = fDeg;\r
- VectorCopy(vOrigin, txl_vOrigin);\r
- TextureLockTransformation_BrushPrimit(f);\r
-}\r
-\r
-// compute the new brush primit texture matrix for a transformation matrix and a flip order flag (change plane orientation)\r
-// this matches the select_matrix algo used in select.cpp\r
-// this needs to be called on the face BEFORE any geometric transformation\r
-// it will compute the texture matrix that will represent the same texture on the face after the geometric transformation is done\r
-void ApplyMatrix_BrushPrimit(face_t *f, vec3_t matrix[3], vec3_t origin)\r
-{\r
- // this is a placeholder to call the general texture locking algorithm\r
- txlock_bRotation = false;\r
- VectorCopy(matrix[0], txl_matrix[0]);\r
- VectorCopy(matrix[1], txl_matrix[1]);\r
- VectorCopy(matrix[2], txl_matrix[2]);\r
- VectorCopy(origin, txl_origin);\r
- TextureLockTransformation_BrushPrimit(f);\r
-}\r
-\r
-// don't do C==A!\r
-void BPMatMul(vec_t A[2][3], vec_t B[2][3], vec_t C[2][3])\r
-{\r
- C[0][0] = A[0][0]*B[0][0]+A[0][1]*B[1][0];\r
- C[1][0] = A[1][0]*B[0][0]+A[1][1]*B[1][0];\r
- C[0][1] = A[0][0]*B[0][1]+A[0][1]*B[1][1];\r
- C[1][1] = A[1][0]*B[0][1]+A[1][1]*B[1][1];\r
- C[0][2] = A[0][0]*B[0][2]+A[0][1]*B[1][2]+A[0][2];\r
- C[1][2] = A[1][0]*B[0][2]+A[1][1]*B[1][2]+A[1][2];\r
-}\r
-\r
-void BPMatDump(vec_t A[2][3])\r
-{\r
- Sys_Printf("%g %g %g\n%g %g %g\n0 0 1\n", A[0][0], A[0][1], A[0][2], A[1][0], A[1][1], A[1][2]);\r
-}\r
-\r
-void BPMatRotate(vec_t A[2][3], float theta)\r
-{\r
- vec_t m[2][3];\r
- vec_t aux[2][3];\r
- memset(&m, 0, sizeof(vec_t)*6);\r
- m[0][0] = cos(theta*Q_PI/180.0);\r
- m[0][1] = -sin(theta*Q_PI/180.0);\r
- m[1][0] = -m[0][1];\r
- m[1][1] = m[0][0];\r
- BPMatMul(A, m, aux);\r
- BPMatCopy(aux,A);\r
-}\r
-\r
-// get the relative axes of the current texturing\r
-void BrushPrimit_GetRelativeAxes(face_t *f, vec3_t vecS, vec3_t vecT)\r
-{\r
- vec_t vS[2],vT[2];\r
- // first we compute them as expressed in plane axis base\r
- // BP matrix has coordinates of plane axis base expressed in geometric axis base\r
- // so we use the line vectors\r
- vS[0] = f->brushprimit_texdef.coords[0][0];\r
- vS[1] = f->brushprimit_texdef.coords[0][1];\r
- vT[0] = f->brushprimit_texdef.coords[1][0];\r
- vT[1] = f->brushprimit_texdef.coords[1][1];\r
- // now compute those vectors in geometric space\r
- vec3_t texS, texT; // axis base of the plane (geometric)\r
- ComputeAxisBase(f->plane.normal, texS, texT);\r
- // vecS[] = vS[0].texS[] + vS[1].texT[]\r
- // vecT[] = vT[0].texS[] + vT[1].texT[]\r
- vecS[0] = vS[0]*texS[0] + vS[1]*texT[0];\r
- vecS[1] = vS[0]*texS[1] + vS[1]*texT[1];\r
- vecS[2] = vS[0]*texS[2] + vS[1]*texT[2];\r
- vecT[0] = vT[0]*texS[0] + vT[1]*texT[0];\r
- vecT[1] = vT[0]*texS[1] + vT[1]*texT[1];\r
- vecT[2] = vT[0]*texS[2] + vT[1]*texT[2];\r
-}\r
-\r
-// GL matrix 4x4 product (3D homogeneous matrix)\r
-// NOTE: the crappy thing is that GL doesn't follow the standard convention [line][column]\r
-// otherwise it's all good\r
-void GLMatMul(vec_t M[4][4], vec_t A[4], vec_t B[4])\r
-{\r
- unsigned short i,j;\r
- for (i=0;i<4;i++)\r
- {\r
- B[i] = 0.0;\r
- for (j=0;j<4;j++)\r
- {\r
- B[i] += M[j][i]*A[j];\r
- }\r
- }\r
-}\r
-\r
-qboolean IsBrushPrimitMode()\r
-{\r
- return(g_qeglobals.m_bBrushPrimitMode);\r
-}\r
+/*
+ Copyright (C) 1999-2006 Id Software, Inc. and contributors.
+ For a list of contributors, see the accompanying CONTRIBUTORS file.
+
+ This file is part of GtkRadiant.
+
+ GtkRadiant is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ GtkRadiant is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GtkRadiant; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "brush_primit.h"
+
+#include "debugging/debugging.h"
+
+#include "itexdef.h"
+#include "itextures.h"
+
+#include <algorithm>
+
+#include "stringio.h"
+#include "texturelib.h"
+#include "math/matrix.h"
+#include "math/plane.h"
+#include "math/aabb.h"
+
+#include "winding.h"
+#include "preferences.h"
+
+
+/*!
+ \brief Construct a transform from XYZ space to ST space (3d to 2d).
+ This will be one of three axis-aligned spaces, depending on the surface normal.
+ NOTE: could also be done by swapping values.
+ */
+void Normal_GetTransform( const Vector3& normal, Matrix4& transform ){
+ switch ( projectionaxis_for_normal( normal ) )
+ {
+ case eProjectionAxisZ:
+ transform[0] = 1;
+ transform[1] = 0;
+ transform[2] = 0;
+
+ transform[4] = 0;
+ transform[5] = 1;
+ transform[6] = 0;
+
+ transform[8] = 0;
+ transform[9] = 0;
+ transform[10] = 1;
+ break;
+ case eProjectionAxisY:
+ transform[0] = 1;
+ transform[1] = 0;
+ transform[2] = 0;
+
+ transform[4] = 0;
+ transform[5] = 0;
+ transform[6] = -1;
+
+ transform[8] = 0;
+ transform[9] = 1;
+ transform[10] = 0;
+ break;
+ case eProjectionAxisX:
+ transform[0] = 0;
+ transform[1] = 0;
+ transform[2] = 1;
+
+ transform[4] = 1;
+ transform[5] = 0;
+ transform[6] = 0;
+
+ transform[8] = 0;
+ transform[9] = 1;
+ transform[10] = 0;
+ break;
+ }
+ transform[3] = transform[7] = transform[11] = transform[12] = transform[13] = transform[14] = 0;
+ transform[15] = 1;
+}
+
+/*!
+ \brief Construct a transform in ST space from the texdef.
+ Transforms constructed from quake's texdef format are (-shift)*(1/scale)*(-rotate) with x translation sign flipped.
+ This would really make more sense if it was inverseof(shift*rotate*scale).. oh well.
+ */
+inline void Texdef_toTransform( const texdef_t& texdef, float width, float height, Matrix4& transform ){
+ double inverse_scale[2];
+
+ // transform to texdef shift/scale/rotate
+ inverse_scale[0] = 1 / ( texdef.scale[0] * width );
+ inverse_scale[1] = 1 / ( texdef.scale[1] * -height );
+ transform[12] = texdef.shift[0] / width;
+ transform[13] = -texdef.shift[1] / -height;
+ double c = cos( degrees_to_radians( -texdef.rotate ) );
+ double s = sin( degrees_to_radians( -texdef.rotate ) );
+ transform[0] = static_cast<float>( c * inverse_scale[0] );
+ transform[1] = static_cast<float>( s * inverse_scale[1] );
+ transform[4] = static_cast<float>( -s * inverse_scale[0] );
+ transform[5] = static_cast<float>( c * inverse_scale[1] );
+ transform[2] = transform[3] = transform[6] = transform[7] = transform[8] = transform[9] = transform[11] = transform[14] = 0;
+ transform[10] = transform[15] = 1;
+}
+
+inline void BPTexdef_toTransform( const brushprimit_texdef_t& bp_texdef, Matrix4& transform ){
+ transform = g_matrix4_identity;
+ transform.xx() = bp_texdef.coords[0][0];
+ transform.yx() = bp_texdef.coords[0][1];
+ transform.tx() = bp_texdef.coords[0][2];
+ transform.xy() = bp_texdef.coords[1][0];
+ transform.yy() = bp_texdef.coords[1][1];
+ transform.ty() = bp_texdef.coords[1][2];
+}
+
+inline void Texdef_toTransform( const TextureProjection& projection, float width, float height, Matrix4& transform ){
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ BPTexdef_toTransform( projection.m_brushprimit_texdef, transform );
+ }
+ else
+ {
+ Texdef_toTransform( projection.m_texdef, width, height, transform );
+ }
+}
+
+// handles degenerate cases, just in case library atan2 doesn't
+inline double arctangent_yx( double y, double x ){
+ if ( fabs( x ) > 1.0E-6 ) {
+ return atan2( y, x );
+ }
+ else if ( y > 0 ) {
+ return c_half_pi;
+ }
+ else
+ {
+ return -c_half_pi;
+ }
+}
+
+inline void Texdef_fromTransform( texdef_t& texdef, float width, float height, const Matrix4& transform ){
+ texdef.scale[0] = static_cast<float>( ( 1.0 / vector2_length( Vector2( transform[0], transform[4] ) ) ) / width );
+ texdef.scale[1] = static_cast<float>( ( 1.0 / vector2_length( Vector2( transform[1], transform[5] ) ) ) / height );
+
+ texdef.rotate = static_cast<float>( -radians_to_degrees( arctangent_yx( -transform[4], transform[0] ) ) );
+
+ if ( texdef.rotate == -180.0f ) {
+ texdef.rotate = 180.0f;
+ }
+
+ texdef.shift[0] = transform[12] * width;
+ texdef.shift[1] = transform[13] * height;
+
+ // If the 2d cross-product of the x and y axes is positive, one of the axes has a negative scale.
+ if ( vector2_cross( Vector2( transform[0], transform[4] ), Vector2( transform[1], transform[5] ) ) > 0 ) {
+ if ( texdef.rotate >= 180.0f ) {
+ texdef.rotate -= 180.0f;
+ texdef.scale[0] = -texdef.scale[0];
+ }
+ else
+ {
+ texdef.scale[1] = -texdef.scale[1];
+ }
+ }
+ //globalOutputStream() << "fromTransform: " << texdef.shift[0] << " " << texdef.shift[1] << " " << texdef.scale[0] << " " << texdef.scale[1] << " " << texdef.rotate << "\n";
+}
+
+inline void BPTexdef_fromTransform( brushprimit_texdef_t& bp_texdef, const Matrix4& transform ){
+ bp_texdef.coords[0][0] = transform.xx();
+ bp_texdef.coords[0][1] = transform.yx();
+ bp_texdef.coords[0][2] = transform.tx();
+ bp_texdef.coords[1][0] = transform.xy();
+ bp_texdef.coords[1][1] = transform.yy();
+ bp_texdef.coords[1][2] = transform.ty();
+}
+
+inline void Texdef_fromTransform( TextureProjection& projection, float width, float height, const Matrix4& transform ){
+ ASSERT_MESSAGE( ( transform[0] != 0 || transform[4] != 0 )
+ && ( transform[1] != 0 || transform[5] != 0 ), "invalid texture matrix" );
+
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ BPTexdef_fromTransform( projection.m_brushprimit_texdef, transform );
+ }
+ else
+ {
+ Texdef_fromTransform( projection.m_texdef, width, height, transform );
+ }
+}
+
+inline void Texdef_normalise( texdef_t& texdef, float width, float height ){
+ // it may be useful to also normalise the rotation here, if this function is used elsewhere.
+ texdef.shift[0] = float_mod( texdef.shift[0], width );
+ texdef.shift[1] = float_mod( texdef.shift[1], height );
+ //globalOutputStream() << "normalise: " << texdef.shift[0] << " " << texdef.shift[1] << " " << texdef.scale[0] << " " << texdef.scale[1] << " " << texdef.rotate << "\n";
+}
+
+inline void BPTexdef_normalise( brushprimit_texdef_t& bp_texdef, float width, float height ){
+ bp_texdef.coords[0][2] = float_mod( bp_texdef.coords[0][2], width );
+ bp_texdef.coords[1][2] = float_mod( bp_texdef.coords[1][2], height );
+}
+
+/// \brief Normalise \p projection for a given texture \p width and \p height.
+///
+/// All texture-projection translation (shift) values are congruent modulo the dimensions of the texture.
+/// This function normalises shift values to the smallest positive congruent values.
+void Texdef_normalise( TextureProjection& projection, float width, float height ){
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ BPTexdef_normalise( projection.m_brushprimit_texdef, width, height );
+ }
+ else
+ {
+ Texdef_normalise( projection.m_texdef, width, height );
+ }
+}
+
+void ComputeAxisBase( const Vector3& normal, Vector3& texS, Vector3& texT );
+
+inline void DebugAxisBase( const Vector3& normal ){
+ Vector3 x, y;
+ ComputeAxisBase( normal, x, y );
+ globalOutputStream() << "BP debug: " << x << y << normal << "\n";
+}
+
+void Texdef_basisForNormal( const TextureProjection& projection, const Vector3& normal, Matrix4& basis ){
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ basis = g_matrix4_identity;
+ ComputeAxisBase( normal, vector4_to_vector3( basis.x() ), vector4_to_vector3( basis.y() ) );
+ vector4_to_vector3( basis.z() ) = normal;
+ matrix4_transpose( basis );
+ //DebugAxisBase(normal);
+ }
+ else if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_HALFLIFE ) {
+ basis = g_matrix4_identity;
+ vector4_to_vector3( basis.x() ) = projection.m_basis_s;
+ vector4_to_vector3( basis.y() ) = vector3_negated( projection.m_basis_t );
+ vector4_to_vector3( basis.z() ) = vector3_normalised( vector3_cross( vector4_to_vector3( basis.x() ), vector4_to_vector3( basis.y() ) ) );
+ matrix4_multiply_by_matrix4( basis, matrix4_rotation_for_z_degrees( -projection.m_texdef.rotate ) );
+ //globalOutputStream() << "debug: " << projection.m_basis_s << projection.m_basis_t << normal << "\n";
+ matrix4_transpose( basis );
+ }
+ else
+ {
+ Normal_GetTransform( normal, basis );
+ }
+}
+
+void Texdef_EmitTextureCoordinates( const TextureProjection& projection, std::size_t width, std::size_t height, Winding& w, const Vector3& normal, const Matrix4& localToWorld ){
+ if ( w.numpoints < 3 ) {
+ return;
+ }
+ //globalOutputStream() << "normal: " << normal << "\n";
+
+ Matrix4 local2tex;
+ Texdef_toTransform( projection, (float)width, (float)height, local2tex );
+ //globalOutputStream() << "texdef: " << static_cast<const Vector3&>(local2tex.x()) << static_cast<const Vector3&>(local2tex.y()) << "\n";
+
+#if 0
+ {
+ TextureProjection tmp;
+ Texdef_fromTransform( tmp, (float)width, (float)height, local2tex );
+ Matrix4 tmpTransform;
+ Texdef_toTransform( tmp, (float)width, (float)height, tmpTransform );
+ ASSERT_MESSAGE( matrix4_equal_epsilon( local2tex, tmpTransform, 0.0001f ), "bleh" );
+ }
+#endif
+
+ {
+ Matrix4 xyz2st;
+ // we don't care if it's not normalised...
+ Texdef_basisForNormal( projection, matrix4_transformed_direction( localToWorld, normal ), xyz2st );
+ //globalOutputStream() << "basis: " << static_cast<const Vector3&>(xyz2st.x()) << static_cast<const Vector3&>(xyz2st.y()) << static_cast<const Vector3&>(xyz2st.z()) << "\n";
+ matrix4_multiply_by_matrix4( local2tex, xyz2st );
+ }
+
+ Vector3 tangent( vector3_normalised( vector4_to_vector3( matrix4_transposed( local2tex ).x() ) ) );
+ Vector3 bitangent( vector3_normalised( vector4_to_vector3( matrix4_transposed( local2tex ).y() ) ) );
+
+ matrix4_multiply_by_matrix4( local2tex, localToWorld );
+
+ for ( Winding::iterator i = w.begin(); i != w.end(); ++i )
+ {
+ Vector3 texcoord = matrix4_transformed_point( local2tex, ( *i ).vertex );
+ ( *i ).texcoord[0] = texcoord[0];
+ ( *i ).texcoord[1] = texcoord[1];
+
+ ( *i ).tangent = tangent;
+ ( *i ).bitangent = bitangent;
+ }
+}
+
+/*!
+ \brief Provides the axis-base of the texture ST space for this normal,
+ as they had been transformed to world XYZ space.
+ */
+void TextureAxisFromNormal( const Vector3& normal, Vector3& s, Vector3& t ){
+ switch ( projectionaxis_for_normal( normal ) )
+ {
+ case eProjectionAxisZ:
+ s[0] = 1;
+ s[1] = 0;
+ s[2] = 0;
+
+ t[0] = 0;
+ t[1] = -1;
+ t[2] = 0;
+
+ break;
+ case eProjectionAxisY:
+ s[0] = 1;
+ s[1] = 0;
+ s[2] = 0;
+
+ t[0] = 0;
+ t[1] = 0;
+ t[2] = -1;
+
+ break;
+ case eProjectionAxisX:
+ s[0] = 0;
+ s[1] = 1;
+ s[2] = 0;
+
+ t[0] = 0;
+ t[1] = 0;
+ t[2] = -1;
+
+ break;
+ }
+}
+
+void Texdef_Assign( texdef_t& td, const texdef_t& other ){
+ td = other;
+}
+
+void Texdef_Shift( texdef_t& td, float s, float t ){
+ td.shift[0] += s;
+ td.shift[1] += t;
+}
+
+void Texdef_Scale( texdef_t& td, float s, float t ){
+ td.scale[0] += s;
+ td.scale[1] += t;
+}
+
+void Texdef_Rotate( texdef_t& td, float angle ){
+ td.rotate += angle;
+ td.rotate = static_cast<float>( float_to_integer( td.rotate ) % 360 );
+}
+
+// NOTE: added these from Ritual's Q3Radiant
+void ClearBounds( Vector3& mins, Vector3& maxs ){
+ mins[0] = mins[1] = mins[2] = 99999;
+ maxs[0] = maxs[1] = maxs[2] = -99999;
+}
+
+void AddPointToBounds( const Vector3& v, Vector3& mins, Vector3& maxs ){
+ int i;
+ float val;
+
+ for ( i = 0 ; i < 3 ; i++ )
+ {
+ val = v[i];
+ if ( val < mins[i] ) {
+ mins[i] = val;
+ }
+ if ( val > maxs[i] ) {
+ maxs[i] = val;
+ }
+ }
+}
+
+template<typename Element>
+inline BasicVector3<Element> vector3_inverse( const BasicVector3<Element>& self ){
+ return BasicVector3<Element>(
+ Element( 1.0 / self.x() ),
+ Element( 1.0 / self.y() ),
+ Element( 1.0 / self.z() )
+ );
+}
+
+// low level functions .. put in mathlib?
+#define BPMatCopy( a,b ) {b[0][0] = a[0][0]; b[0][1] = a[0][1]; b[0][2] = a[0][2]; b[1][0] = a[1][0]; b[1][1] = a[1][1]; b[1][2] = a[1][2]; }
+// apply a scale transformation to the BP matrix
+#define BPMatScale( m,sS,sT ) {m[0][0] *= sS; m[1][0] *= sS; m[0][1] *= sT; m[1][1] *= sT; }
+// apply a translation transformation to a BP matrix
+#define BPMatTranslate( m,s,t ) {m[0][2] += m[0][0] * s + m[0][1] * t; m[1][2] += m[1][0] * s + m[1][1] * t; }
+// 2D homogeneous matrix product C = A*B
+void BPMatMul( float A[2][3], float B[2][3], float C[2][3] );
+// apply a rotation (degrees)
+void BPMatRotate( float A[2][3], float theta );
+#ifdef _DEBUG
+void BPMatDump( float A[2][3] );
+#endif
+
+#ifdef _DEBUG
+//#define DBG_BP
+#endif
+
+
+bp_globals_t g_bp_globals;
+float g_texdef_default_scale;
+
+// compute a determinant using Sarrus rule
+//++timo "inline" this with a macro
+// NOTE : the three vectors are understood as columns of the matrix
+inline float SarrusDet( const Vector3& a, const Vector3& b, const Vector3& c ){
+ return a[0] * b[1] * c[2] + b[0] * c[1] * a[2] + c[0] * a[1] * b[2]
+ - c[0] * b[1] * a[2] - a[1] * b[0] * c[2] - a[0] * b[2] * c[1];
+}
+
+// in many case we know three points A,B,C in two axis base B1 and B2
+// and we want the matrix M so that A(B1) = T * A(B2)
+// NOTE: 2D homogeneous space stuff
+// NOTE: we don't do any check to see if there's a solution or we have a particular case .. need to make sure before calling
+// NOTE: the third coord of the A,B,C point is ignored
+// NOTE: see the commented out section to fill M and D
+//++timo TODO: update the other members to use this when possible
+void MatrixForPoints( Vector3 M[3], Vector3 D[2], brushprimit_texdef_t *T ){
+// Vector3 M[3]; // columns of the matrix .. easier that way (the indexing is not standard! it's column-line .. later computations are easier that way)
+ float det;
+// Vector3 D[2];
+ M[2][0] = 1.0f; M[2][1] = 1.0f; M[2][2] = 1.0f;
+#if 0
+ // fill the data vectors
+ M[0][0] = A2[0]; M[0][1] = B2[0]; M[0][2] = C2[0];
+ M[1][0] = A2[1]; M[1][1] = B2[1]; M[1][2] = C2[1];
+ M[2][0] = 1.0f; M[2][1] = 1.0f; M[2][2] = 1.0f;
+ D[0][0] = A1[0];
+ D[0][1] = B1[0];
+ D[0][2] = C1[0];
+ D[1][0] = A1[1];
+ D[1][1] = B1[1];
+ D[1][2] = C1[1];
+#endif
+ // solve
+ det = SarrusDet( M[0], M[1], M[2] );
+ T->coords[0][0] = SarrusDet( D[0], M[1], M[2] ) / det;
+ T->coords[0][1] = SarrusDet( M[0], D[0], M[2] ) / det;
+ T->coords[0][2] = SarrusDet( M[0], M[1], D[0] ) / det;
+ T->coords[1][0] = SarrusDet( D[1], M[1], M[2] ) / det;
+ T->coords[1][1] = SarrusDet( M[0], D[1], M[2] ) / det;
+ T->coords[1][2] = SarrusDet( M[0], M[1], D[1] ) / det;
+}
+
+//++timo replace everywhere texX by texS etc. ( ----> and in q3map !)
+// NOTE : ComputeAxisBase here and in q3map code must always BE THE SAME !
+// WARNING : special case behaviour of atan2(y,x) <-> atan(y/x) might not be the same everywhere when x == 0
+// rotation by (0,RotY,RotZ) assigns X to normal
+void ComputeAxisBase( const Vector3& normal, Vector3& texS, Vector3& texT ){
+#if 1
+ const Vector3 up( 0, 0, 1 );
+ const Vector3 down( 0, 0, -1 );
+
+ if ( vector3_equal_epsilon( normal, up, float(1e-6) ) ) {
+ texS = Vector3( 0, 1, 0 );
+ texT = Vector3( 1, 0, 0 );
+ }
+ else if ( vector3_equal_epsilon( normal, down, float(1e-6) ) ) {
+ texS = Vector3( 0, 1, 0 );
+ texT = Vector3( -1, 0, 0 );
+ }
+ else
+ {
+ texS = vector3_normalised( vector3_cross( normal, up ) );
+ texT = vector3_normalised( vector3_cross( normal, texS ) );
+ vector3_negate( texS );
+ }
+
+#else
+ float RotY,RotZ;
+ // do some cleaning
+ /*
+ if (fabs(normal[0])<1e-6)
+ normal[0]=0.0f;
+ if (fabs(normal[1])<1e-6)
+ normal[1]=0.0f;
+ if (fabs(normal[2])<1e-6)
+ normal[2]=0.0f;
+ */
+ RotY = -atan2( normal[2],sqrt( normal[1] * normal[1] + normal[0] * normal[0] ) );
+ RotZ = atan2( normal[1],normal[0] );
+ // rotate (0,1,0) and (0,0,1) to compute texS and texT
+ texS[0] = -sin( RotZ );
+ texS[1] = cos( RotZ );
+ texS[2] = 0;
+ // the texT vector is along -Z ( T texture coorinates axis )
+ texT[0] = -sin( RotY ) * cos( RotZ );
+ texT[1] = -sin( RotY ) * sin( RotZ );
+ texT[2] = -cos( RotY );
+#endif
+}
+
+#if 0 // texdef conversion
+void FaceToBrushPrimitFace( face_t *f ){
+ Vector3 texX,texY;
+ Vector3 proj;
+ // ST of (0,0) (1,0) (0,1)
+ float ST[3][5]; // [ point index ] [ xyz ST ]
+ //++timo not used as long as brushprimit_texdef and texdef are static
+/* f->brushprimit_texdef.contents=f->texdef.contents;
+ f->brushprimit_texdef.flags=f->texdef.flags;
+ f->brushprimit_texdef.value=f->texdef.value;
+ strcpy(f->brushprimit_texdef.name,f->texdef.name); */
+#ifdef DBG_BP
+ if ( f->plane.normal[0] == 0.0f && f->plane.normal[1] == 0.0f && f->plane.normal[2] == 0.0f ) {
+ globalOutputStream() << "Warning : f->plane.normal is (0,0,0) in FaceToBrushPrimitFace\n";
+ }
+ // check d_texture
+ if ( !f->d_texture ) {
+ globalOutputStream() << "Warning : f.d_texture is 0 in FaceToBrushPrimitFace\n";
+ return;
+ }
+#endif
+ // compute axis base
+ ComputeAxisBase( f->plane.normal,texX,texY );
+ // compute projection vector
+ VectorCopy( f->plane.normal,proj );
+ VectorScale( proj,f->plane.dist,proj );
+ // (0,0) in plane axis base is (0,0,0) in world coordinates + projection on the affine plane
+ // (1,0) in plane axis base is texX in world coordinates + projection on the affine plane
+ // (0,1) in plane axis base is texY in world coordinates + projection on the affine plane
+ // use old texture code to compute the ST coords of these points
+ VectorCopy( proj,ST[0] );
+ EmitTextureCoordinates( ST[0], f->pShader->getTexture(), f );
+ VectorCopy( texX,ST[1] );
+ VectorAdd( ST[1],proj,ST[1] );
+ EmitTextureCoordinates( ST[1], f->pShader->getTexture(), f );
+ VectorCopy( texY,ST[2] );
+ VectorAdd( ST[2],proj,ST[2] );
+ EmitTextureCoordinates( ST[2], f->pShader->getTexture(), f );
+ // compute texture matrix
+ f->brushprimit_texdef.coords[0][2] = ST[0][3];
+ f->brushprimit_texdef.coords[1][2] = ST[0][4];
+ f->brushprimit_texdef.coords[0][0] = ST[1][3] - f->brushprimit_texdef.coords[0][2];
+ f->brushprimit_texdef.coords[1][0] = ST[1][4] - f->brushprimit_texdef.coords[1][2];
+ f->brushprimit_texdef.coords[0][1] = ST[2][3] - f->brushprimit_texdef.coords[0][2];
+ f->brushprimit_texdef.coords[1][1] = ST[2][4] - f->brushprimit_texdef.coords[1][2];
+}
+
+// compute texture coordinates for the winding points
+void EmitBrushPrimitTextureCoordinates( face_t * f, Winding * w ){
+ Vector3 texX,texY;
+ float x,y;
+ // compute axis base
+ ComputeAxisBase( f->plane.normal,texX,texY );
+ // in case the texcoords matrix is empty, build a default one
+ // same behaviour as if scale[0]==0 && scale[1]==0 in old code
+ if ( f->brushprimit_texdef.coords[0][0] == 0 && f->brushprimit_texdef.coords[1][0] == 0 && f->brushprimit_texdef.coords[0][1] == 0 && f->brushprimit_texdef.coords[1][1] == 0 ) {
+ f->brushprimit_texdef.coords[0][0] = 1.0f;
+ f->brushprimit_texdef.coords[1][1] = 1.0f;
+ ConvertTexMatWithQTexture( &f->brushprimit_texdef, 0, &f->brushprimit_texdef, f->pShader->getTexture() );
+ }
+ int i;
+ for ( i = 0 ; i < w.numpoints ; i++ )
+ {
+ x = vector3_dot( w.point_at( i ),texX );
+ y = vector3_dot( w.point_at( i ),texY );
+#if 0
+#ifdef DBG_BP
+ if ( g_bp_globals.bNeedConvert ) {
+ // check we compute the same ST as the traditional texture computation used before
+ float S = f->brushprimit_texdef.coords[0][0] * x + f->brushprimit_texdef.coords[0][1] * y + f->brushprimit_texdef.coords[0][2];
+ float T = f->brushprimit_texdef.coords[1][0] * x + f->brushprimit_texdef.coords[1][1] * y + f->brushprimit_texdef.coords[1][2];
+ if ( fabs( S - w.point_at( i )[3] ) > 1e-2 || fabs( T - w.point_at( i )[4] ) > 1e-2 ) {
+ if ( fabs( S - w.point_at( i )[3] ) > 1e-4 || fabs( T - w.point_at( i )[4] ) > 1e-4 ) {
+ globalOutputStream() << "Warning : precision loss in brush -> brush primitive texture computation\n";
+ }
+ else{
+ globalOutputStream() << "Warning : brush -> brush primitive texture computation bug detected\n";
+ }
+ }
+ }
+#endif
+#endif
+ w.point_at( i )[3] = f->brushprimit_texdef.coords[0][0] * x + f->brushprimit_texdef.coords[0][1] * y + f->brushprimit_texdef.coords[0][2];
+ w.point_at( i )[4] = f->brushprimit_texdef.coords[1][0] * x + f->brushprimit_texdef.coords[1][1] * y + f->brushprimit_texdef.coords[1][2];
+ }
+}
+#endif
+
+typedef float texmat_t[2][3];
+
+void TexMat_Scale( texmat_t texmat, float s, float t ){
+ texmat[0][0] *= s;
+ texmat[0][1] *= s;
+ texmat[0][2] *= s;
+ texmat[1][0] *= t;
+ texmat[1][1] *= t;
+ texmat[1][2] *= t;
+}
+
+void TexMat_Assign( texmat_t texmat, const texmat_t other ){
+ texmat[0][0] = other[0][0];
+ texmat[0][1] = other[0][1];
+ texmat[0][2] = other[0][2];
+ texmat[1][0] = other[1][0];
+ texmat[1][1] = other[1][1];
+ texmat[1][2] = other[1][2];
+}
+
+void ConvertTexMatWithDimensions( const texmat_t texmat1, std::size_t w1, std::size_t h1,
+ texmat_t texmat2, std::size_t w2, std::size_t h2 ){
+ TexMat_Assign( texmat2, texmat1 );
+ TexMat_Scale( texmat2, static_cast<float>( w1 ) / static_cast<float>( w2 ), static_cast<float>( h1 ) / static_cast<float>( h2 ) );
+}
+
+#if 0
+// convert a texture matrix between two qtexture_t
+// if 0 for qtexture_t, basic 2x2 texture is assumed ( straight mapping between s/t coordinates and geometric coordinates )
+void ConvertTexMatWithQTexture( const float texMat1[2][3], const qtexture_t *qtex1, float texMat2[2][3], const qtexture_t *qtex2 ){
+ ConvertTexMatWithDimensions( texMat1, ( qtex1 ) ? qtex1->width : 2, ( qtex1 ) ? qtex1->height : 2,
+ texMat2, ( qtex2 ) ? qtex2->width : 2, ( qtex2 ) ? qtex2->height : 2 );
+}
+
+void ConvertTexMatWithQTexture( const brushprimit_texdef_t *texMat1, const qtexture_t *qtex1, brushprimit_texdef_t *texMat2, const qtexture_t *qtex2 ){
+ ConvertTexMatWithQTexture( texMat1->coords, qtex1, texMat2->coords, qtex2 );
+}
+#endif
+
+// compute a fake shift scale rot representation from the texture matrix
+// these shift scale rot values are to be understood in the local axis base
+// Note: this code looks similar to Texdef_fromTransform, but the algorithm is slightly different.
+
+void TexMatToFakeTexCoords( const brushprimit_texdef_t& bp_texdef, texdef_t& texdef ){
+ texdef.scale[0] = static_cast<float>( 1.0 / vector2_length( Vector2( bp_texdef.coords[0][0], bp_texdef.coords[1][0] ) ) );
+ texdef.scale[1] = static_cast<float>( 1.0 / vector2_length( Vector2( bp_texdef.coords[0][1], bp_texdef.coords[1][1] ) ) );
+
+ texdef.rotate = -static_cast<float>( radians_to_degrees( arctangent_yx( bp_texdef.coords[1][0], bp_texdef.coords[0][0] ) ) );
+
+ texdef.shift[0] = -bp_texdef.coords[0][2];
+ texdef.shift[1] = bp_texdef.coords[1][2];
+
+ // determine whether or not an axis is flipped using a 2d cross-product
+ double cross = vector2_cross( Vector2( bp_texdef.coords[0][0], bp_texdef.coords[0][1] ), Vector2( bp_texdef.coords[1][0], bp_texdef.coords[1][1] ) );
+ if ( cross < 0 ) {
+ // This is a bit of a compromise when using BPs--since we don't know *which* axis was flipped,
+ // we pick one (rather arbitrarily) using the following convention: If the X-axis is between
+ // 0 and 180, we assume it's the Y-axis that flipped, otherwise we assume it's the X-axis and
+ // subtract out 180 degrees to compensate.
+ if ( texdef.rotate >= 180.0f ) {
+ texdef.rotate -= 180.0f;
+ texdef.scale[0] = -texdef.scale[0];
+ }
+ else
+ {
+ texdef.scale[1] = -texdef.scale[1];
+ }
+ }
+}
+
+// compute back the texture matrix from fake shift scale rot
+void FakeTexCoordsToTexMat( const texdef_t& texdef, brushprimit_texdef_t& bp_texdef ){
+ double r = degrees_to_radians( -texdef.rotate );
+ double c = cos( r );
+ double s = sin( r );
+ double x = 1.0f / texdef.scale[0];
+ double y = 1.0f / texdef.scale[1];
+ bp_texdef.coords[0][0] = static_cast<float>( x * c );
+ bp_texdef.coords[1][0] = static_cast<float>( x * s );
+ bp_texdef.coords[0][1] = static_cast<float>( y * -s );
+ bp_texdef.coords[1][1] = static_cast<float>( y * c );
+ bp_texdef.coords[0][2] = -texdef.shift[0];
+ bp_texdef.coords[1][2] = texdef.shift[1];
+}
+
+#if 0 // texture locking (brush primit)
+// used for texture locking
+// will move the texture according to a geometric vector
+void ShiftTextureGeometric_BrushPrimit( face_t *f, Vector3& delta ){
+ Vector3 texS,texT;
+ float tx,ty;
+ Vector3 M[3]; // columns of the matrix .. easier that way
+ float det;
+ Vector3 D[2];
+ // compute plane axis base ( doesn't change with translation )
+ ComputeAxisBase( f->plane.normal, texS, texT );
+ // compute translation vector in plane axis base
+ tx = vector3_dot( delta, texS );
+ ty = vector3_dot( delta, texT );
+ // fill the data vectors
+ M[0][0] = tx; M[0][1] = 1.0f + tx; M[0][2] = tx;
+ M[1][0] = ty; M[1][1] = ty; M[1][2] = 1.0f + ty;
+ M[2][0] = 1.0f; M[2][1] = 1.0f; M[2][2] = 1.0f;
+ D[0][0] = f->brushprimit_texdef.coords[0][2];
+ D[0][1] = f->brushprimit_texdef.coords[0][0] + f->brushprimit_texdef.coords[0][2];
+ D[0][2] = f->brushprimit_texdef.coords[0][1] + f->brushprimit_texdef.coords[0][2];
+ D[1][0] = f->brushprimit_texdef.coords[1][2];
+ D[1][1] = f->brushprimit_texdef.coords[1][0] + f->brushprimit_texdef.coords[1][2];
+ D[1][2] = f->brushprimit_texdef.coords[1][1] + f->brushprimit_texdef.coords[1][2];
+ // solve
+ det = SarrusDet( M[0], M[1], M[2] );
+ f->brushprimit_texdef.coords[0][0] = SarrusDet( D[0], M[1], M[2] ) / det;
+ f->brushprimit_texdef.coords[0][1] = SarrusDet( M[0], D[0], M[2] ) / det;
+ f->brushprimit_texdef.coords[0][2] = SarrusDet( M[0], M[1], D[0] ) / det;
+ f->brushprimit_texdef.coords[1][0] = SarrusDet( D[1], M[1], M[2] ) / det;
+ f->brushprimit_texdef.coords[1][1] = SarrusDet( M[0], D[1], M[2] ) / det;
+ f->brushprimit_texdef.coords[1][2] = SarrusDet( M[0], M[1], D[1] ) / det;
+}
+
+// shift a texture (texture adjustments) along it's current texture axes
+// x and y are geometric values, which we must compute as ST increments
+// this depends on the texture size and the pixel/texel ratio
+void ShiftTextureRelative_BrushPrimit( face_t *f, float x, float y ){
+ float s,t;
+ // as a ratio against texture size
+ // the scale of the texture is not relevant here (we work directly on a transformation from the base vectors)
+ s = ( x * 2.0 ) / (float)f->pShader->getTexture().width;
+ t = ( y * 2.0 ) / (float)f->pShader->getTexture().height;
+ f->brushprimit_texdef.coords[0][2] -= s;
+ f->brushprimit_texdef.coords[1][2] -= t;
+}
+#endif
+
+// TTimo: FIXME: I don't like that, it feels broken
+// (and it's likely that it's not used anymore)
+// best fitted 2D vector is x.X+y.Y
+void ComputeBest2DVector( Vector3& v, Vector3& X, Vector3& Y, int &x, int &y ){
+ double sx,sy;
+ sx = vector3_dot( v, X );
+ sy = vector3_dot( v, Y );
+ if ( fabs( sy ) > fabs( sx ) ) {
+ x = 0;
+ if ( sy > 0.0 ) {
+ y = 1;
+ }
+ else{
+ y = -1;
+ }
+ }
+ else
+ {
+ y = 0;
+ if ( sx > 0.0 ) {
+ x = 1;
+ }
+ else{
+ x = -1;
+ }
+ }
+}
+
+
+#if 0 // texdef conversion
+void BrushPrimitFaceToFace( face_t *face ){
+ // we have parsed brush primitives and need conversion back to standard format
+ // NOTE: converting back is a quick hack, there's some information lost and we can't do anything about it
+ // FIXME: if we normalize the texture matrix to a standard 2x2 size, we end up with wrong scaling
+ // I tried various tweaks, no luck .. seems shifting is lost
+ brushprimit_texdef_t aux;
+ ConvertTexMatWithQTexture( &face->brushprimit_texdef, face->pShader->getTexture(), &aux, 0 );
+ TexMatToFakeTexCoords( aux.coords, face->texdef.shift, &face->texdef.rotate, face->texdef.scale );
+ face->texdef.scale[0] /= 2.0;
+ face->texdef.scale[1] /= 2.0;
+}
+#endif
+
+
+#if 0 // texture locking (brush primit)
+// TEXTURE LOCKING -----------------------------------------------------------------------------------------------------
+// (Relevant to the editor only?)
+
+// internally used for texture locking on rotation and flipping
+// the general algorithm is the same for both lockings, it's only the geometric transformation part that changes
+// so I wanted to keep it in a single function
+// if there are more linear transformations that need the locking, going to a C++ or code pointer solution would be best
+// (but right now I want to keep brush_primit.cpp striclty C)
+
+bool txlock_bRotation;
+
+// rotation locking params
+int txl_nAxis;
+float txl_fDeg;
+Vector3 txl_vOrigin;
+
+// flip locking params
+Vector3 txl_matrix[3];
+Vector3 txl_origin;
+
+void TextureLockTransformation_BrushPrimit( face_t *f ){
+ Vector3 Orig,texS,texT; // axis base of initial plane
+ // used by transformation algo
+ Vector3 temp; int j;
+ Vector3 vRotate; // rotation vector
+
+ Vector3 rOrig,rvecS,rvecT; // geometric transformation of (0,0) (1,0) (0,1) { initial plane axis base }
+ Vector3 rNormal,rtexS,rtexT; // axis base for the transformed plane
+ Vector3 lOrig,lvecS,lvecT; // [2] are not used ( but usefull for debugging )
+ Vector3 M[3];
+ float det;
+ Vector3 D[2];
+
+ // compute plane axis base
+ ComputeAxisBase( f->plane.normal, texS, texT );
+ VectorSet( Orig, 0.0f, 0.0f, 0.0f );
+
+ // compute coordinates of (0,0) (1,0) (0,1) ( expressed in initial plane axis base ) after transformation
+ // (0,0) (1,0) (0,1) ( expressed in initial plane axis base ) <-> (0,0,0) texS texT ( expressed world axis base )
+ // input: Orig, texS, texT (and the global locking params)
+ // ouput: rOrig, rvecS, rvecT, rNormal
+ if ( txlock_bRotation ) {
+ // rotation vector
+ VectorSet( vRotate, 0.0f, 0.0f, 0.0f );
+ vRotate[txl_nAxis] = txl_fDeg;
+ VectorRotateOrigin( Orig, vRotate, txl_vOrigin, rOrig );
+ VectorRotateOrigin( texS, vRotate, txl_vOrigin, rvecS );
+ VectorRotateOrigin( texT, vRotate, txl_vOrigin, rvecT );
+ // compute normal of plane after rotation
+ VectorRotate( f->plane.normal, vRotate, rNormal );
+ }
+ else
+ {
+ for ( j = 0 ; j < 3 ; j++ )
+ rOrig[j] = vector3_dot( vector3_subtracted( Orig, txl_origin ), txl_matrix[j] ) + txl_origin[j];
+ for ( j = 0 ; j < 3 ; j++ )
+ rvecS[j] = vector3_dot( vector3_subtracted( texS, txl_origin ), txl_matrix[j] ) + txl_origin[j];
+ for ( j = 0 ; j < 3 ; j++ )
+ rvecT[j] = vector3_dot( vector3_subtracted( texT, txl_origin ), txl_matrix[j] ) + txl_origin[j];
+ // we also need the axis base of the target plane, apply the transformation matrix to the normal too..
+ for ( j = 0 ; j < 3 ; j++ )
+ rNormal[j] = vector3_dot( f->plane.normal, txl_matrix[j] );
+ }
+
+ // compute rotated plane axis base
+ ComputeAxisBase( rNormal, rtexS, rtexT );
+ // compute S/T coordinates of the three points in rotated axis base ( in M matrix )
+ lOrig[0] = vector3_dot( rOrig, rtexS );
+ lOrig[1] = vector3_dot( rOrig, rtexT );
+ lvecS[0] = vector3_dot( rvecS, rtexS );
+ lvecS[1] = vector3_dot( rvecS, rtexT );
+ lvecT[0] = vector3_dot( rvecT, rtexS );
+ lvecT[1] = vector3_dot( rvecT, rtexT );
+ M[0][0] = lOrig[0]; M[1][0] = lOrig[1]; M[2][0] = 1.0f;
+ M[0][1] = lvecS[0]; M[1][1] = lvecS[1]; M[2][1] = 1.0f;
+ M[0][2] = lvecT[0]; M[1][2] = lvecT[1]; M[2][2] = 1.0f;
+ // fill data vector
+ D[0][0] = f->brushprimit_texdef.coords[0][2];
+ D[0][1] = f->brushprimit_texdef.coords[0][0] + f->brushprimit_texdef.coords[0][2];
+ D[0][2] = f->brushprimit_texdef.coords[0][1] + f->brushprimit_texdef.coords[0][2];
+ D[1][0] = f->brushprimit_texdef.coords[1][2];
+ D[1][1] = f->brushprimit_texdef.coords[1][0] + f->brushprimit_texdef.coords[1][2];
+ D[1][2] = f->brushprimit_texdef.coords[1][1] + f->brushprimit_texdef.coords[1][2];
+ // solve
+ det = SarrusDet( M[0], M[1], M[2] );
+ f->brushprimit_texdef.coords[0][0] = SarrusDet( D[0], M[1], M[2] ) / det;
+ f->brushprimit_texdef.coords[0][1] = SarrusDet( M[0], D[0], M[2] ) / det;
+ f->brushprimit_texdef.coords[0][2] = SarrusDet( M[0], M[1], D[0] ) / det;
+ f->brushprimit_texdef.coords[1][0] = SarrusDet( D[1], M[1], M[2] ) / det;
+ f->brushprimit_texdef.coords[1][1] = SarrusDet( M[0], D[1], M[2] ) / det;
+ f->brushprimit_texdef.coords[1][2] = SarrusDet( M[0], M[1], D[1] ) / det;
+}
+
+// texture locking
+// called before the points on the face are actually rotated
+void RotateFaceTexture_BrushPrimit( face_t *f, int nAxis, float fDeg, Vector3& vOrigin ){
+ // this is a placeholder to call the general texture locking algorithm
+ txlock_bRotation = true;
+ txl_nAxis = nAxis;
+ txl_fDeg = fDeg;
+ VectorCopy( vOrigin, txl_vOrigin );
+ TextureLockTransformation_BrushPrimit( f );
+}
+
+// compute the new brush primit texture matrix for a transformation matrix and a flip order flag (change plane orientation)
+// this matches the select_matrix algo used in select.cpp
+// this needs to be called on the face BEFORE any geometric transformation
+// it will compute the texture matrix that will represent the same texture on the face after the geometric transformation is done
+void ApplyMatrix_BrushPrimit( face_t *f, Vector3 matrix[3], Vector3& origin ){
+ // this is a placeholder to call the general texture locking algorithm
+ txlock_bRotation = false;
+ VectorCopy( matrix[0], txl_matrix[0] );
+ VectorCopy( matrix[1], txl_matrix[1] );
+ VectorCopy( matrix[2], txl_matrix[2] );
+ VectorCopy( origin, txl_origin );
+ TextureLockTransformation_BrushPrimit( f );
+}
+#endif
+
+// don't do C==A!
+void BPMatMul( float A[2][3], float B[2][3], float C[2][3] ){
+ C[0][0] = A[0][0] * B[0][0] + A[0][1] * B[1][0];
+ C[1][0] = A[1][0] * B[0][0] + A[1][1] * B[1][0];
+ C[0][1] = A[0][0] * B[0][1] + A[0][1] * B[1][1];
+ C[1][1] = A[1][0] * B[0][1] + A[1][1] * B[1][1];
+ C[0][2] = A[0][0] * B[0][2] + A[0][1] * B[1][2] + A[0][2];
+ C[1][2] = A[1][0] * B[0][2] + A[1][1] * B[1][2] + A[1][2];
+}
+
+void BPMatDump( float A[2][3] ){
+ globalOutputStream() << "" << A[0][0]
+ << " " << A[0][1]
+ << " " << A[0][2]
+ << "\n" << A[1][0]
+ << " " << A[1][2]
+ << " " << A[1][2]
+ << "\n0 0 1\n";
+}
+
+void BPMatRotate( float A[2][3], float theta ){
+ float m[2][3];
+ float aux[2][3];
+ memset( &m, 0, sizeof( float ) * 6 );
+ m[0][0] = static_cast<float>( cos( degrees_to_radians( theta ) ) );
+ m[0][1] = static_cast<float>( -sin( degrees_to_radians( theta ) ) );
+ m[1][0] = -m[0][1];
+ m[1][1] = m[0][0];
+ BPMatMul( A, m, aux );
+ BPMatCopy( aux,A );
+}
+
+#if 0 // camera-relative texture shift
+// get the relative axes of the current texturing
+void BrushPrimit_GetRelativeAxes( face_t *f, Vector3& vecS, Vector3& vecT ){
+ float vS[2],vT[2];
+ // first we compute them as expressed in plane axis base
+ // BP matrix has coordinates of plane axis base expressed in geometric axis base
+ // so we use the line vectors
+ vS[0] = f->brushprimit_texdef.coords[0][0];
+ vS[1] = f->brushprimit_texdef.coords[0][1];
+ vT[0] = f->brushprimit_texdef.coords[1][0];
+ vT[1] = f->brushprimit_texdef.coords[1][1];
+ // now compute those vectors in geometric space
+ Vector3 texS, texT; // axis base of the plane (geometric)
+ ComputeAxisBase( f->plane.normal, texS, texT );
+ // vecS[] = vS[0].texS[] + vS[1].texT[]
+ // vecT[] = vT[0].texS[] + vT[1].texT[]
+ vecS[0] = vS[0] * texS[0] + vS[1] * texT[0];
+ vecS[1] = vS[0] * texS[1] + vS[1] * texT[1];
+ vecS[2] = vS[0] * texS[2] + vS[1] * texT[2];
+ vecT[0] = vT[0] * texS[0] + vT[1] * texT[0];
+ vecT[1] = vT[0] * texS[1] + vT[1] * texT[1];
+ vecT[2] = vT[0] * texS[2] + vT[1] * texT[2];
+}
+
+// brush primitive texture adjustments, use the camera view to map adjustments
+// ShiftTextureRelative_BrushPrimit ( s , t ) will shift relative to the texture
+void ShiftTextureRelative_Camera( face_t *f, int x, int y ){
+ Vector3 vecS, vecT;
+ float XY[2]; // the values we are going to send for translation
+ float sgn[2]; // +1 or -1
+ int axis[2];
+ CamWnd* pCam;
+
+ // get the two relative texture axes for the current texturing
+ BrushPrimit_GetRelativeAxes( f, vecS, vecT );
+
+ // center point of the face, project it on the camera space
+ Vector3 C;
+ VectorClear( C );
+ int i;
+ for ( i = 0; i < f->face_winding->numpoints; i++ )
+ {
+ VectorAdd( C,f->face_winding->point_at( i ),C );
+ }
+ VectorScale( C,1.0 / f->face_winding->numpoints,C );
+
+ pCam = g_pParentWnd->GetCamWnd();
+ pCam->MatchViewAxes( C, vecS, axis[0], sgn[0] );
+ pCam->MatchViewAxes( C, vecT, axis[1], sgn[1] );
+
+ // this happens when the two directions can't be mapped on two different directions on the screen
+ // then the move will occur against a single axis
+ // (i.e. the user is not positioned well enough to send understandable shift commands)
+ // NOTE: in most cases this warning is not very relevant because the user would use one of the two axes
+ // for which the solution is easy (the other one being unknown)
+ // so this warning could be removed
+ if ( axis[0] == axis[1] ) {
+ globalOutputStream() << "Warning: degenerate in ShiftTextureRelative_Camera\n";
+ }
+
+ // compute the X Y geometric increments
+ // those geometric increments will be applied along the texture axes (the ones we computed above)
+ XY[0] = 0;
+ XY[1] = 0;
+ if ( x != 0 ) {
+ // moving right/left
+ XY[axis[0]] += sgn[0] * x;
+ }
+ if ( y != 0 ) {
+ XY[axis[1]] += sgn[1] * y;
+ }
+ // we worked out a move along vecS vecT, and we now it's geometric amplitude
+ // apply it
+ ShiftTextureRelative_BrushPrimit( f, XY[0], XY[1] );
+}
+#endif
+
+
+void BPTexdef_Assign( brushprimit_texdef_t& bp_td, const brushprimit_texdef_t& bp_other ){
+ bp_td = bp_other;
+}
+
+void BPTexdef_Shift( brushprimit_texdef_t& bp_td, float s, float t ){
+ // shift a texture (texture adjustments) along it's current texture axes
+ // x and y are geometric values, which we must compute as ST increments
+ // this depends on the texture size and the pixel/texel ratio
+ // as a ratio against texture size
+ // the scale of the texture is not relevant here (we work directly on a transformation from the base vectors)
+ bp_td.coords[0][2] -= s;
+ bp_td.coords[1][2] += t;
+}
+
+void BPTexdef_Scale( brushprimit_texdef_t& bp_td, float s, float t ){
+ // apply same scale as the spinner button of the surface inspector
+ texdef_t texdef;
+ // compute fake shift scale rot
+ TexMatToFakeTexCoords( bp_td, texdef );
+ // update
+ texdef.scale[0] += s;
+ texdef.scale[1] += t;
+ // compute new normalized texture matrix
+ FakeTexCoordsToTexMat( texdef, bp_td );
+}
+
+void BPTexdef_Rotate( brushprimit_texdef_t& bp_td, float angle ){
+ // apply same scale as the spinner button of the surface inspector
+ texdef_t texdef;
+ // compute fake shift scale rot
+ TexMatToFakeTexCoords( bp_td, texdef );
+ // update
+ texdef.rotate += angle;
+ // compute new normalized texture matrix
+ FakeTexCoordsToTexMat( texdef, bp_td );
+}
+
+void BPTexdef_Construct( brushprimit_texdef_t& bp_td, std::size_t width, std::size_t height ){
+ bp_td.coords[0][0] = 1.0f;
+ bp_td.coords[1][1] = 1.0f;
+ ConvertTexMatWithDimensions( bp_td.coords, 2, 2, bp_td.coords, width, height );
+}
+
+void Texdef_Assign( TextureProjection& projection, const TextureProjection& other ){
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ BPTexdef_Assign( projection.m_brushprimit_texdef, other.m_brushprimit_texdef );
+ }
+ else
+ {
+ Texdef_Assign( projection.m_texdef, other.m_texdef );
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_HALFLIFE ) {
+ projection.m_basis_s = other.m_basis_s;
+ projection.m_basis_t = other.m_basis_t;
+ }
+ }
+}
+
+void Texdef_Shift( TextureProjection& projection, float s, float t ){
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ BPTexdef_Shift( projection.m_brushprimit_texdef, s, t );
+ }
+ else
+ {
+ Texdef_Shift( projection.m_texdef, s, t );
+ }
+}
+
+void Texdef_Scale( TextureProjection& projection, float s, float t ){
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ BPTexdef_Scale( projection.m_brushprimit_texdef, s, t );
+ }
+ else
+ {
+ Texdef_Scale( projection.m_texdef, s, t );
+ }
+}
+
+void Texdef_Rotate( TextureProjection& projection, float angle ){
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ BPTexdef_Rotate( projection.m_brushprimit_texdef, angle );
+ }
+ else
+ {
+ Texdef_Rotate( projection.m_texdef, angle );
+ }
+}
+
+void Texdef_FitTexture( TextureProjection& projection, std::size_t width, std::size_t height, const Vector3& normal, const Winding& w, float s_repeat, float t_repeat ){
+ if ( w.numpoints < 3 ) {
+ return;
+ }
+
+ Matrix4 st2tex;
+ Texdef_toTransform( projection, (float)width, (float)height, st2tex );
+
+ // the current texture transform
+ Matrix4 local2tex = st2tex;
+ {
+ Matrix4 xyz2st;
+ Texdef_basisForNormal( projection, normal, xyz2st );
+ matrix4_multiply_by_matrix4( local2tex, xyz2st );
+ }
+
+ // the bounds of the current texture transform
+ AABB bounds;
+ for ( Winding::const_iterator i = w.begin(); i != w.end(); ++i )
+ {
+ Vector3 texcoord = matrix4_transformed_point( local2tex, ( *i ).vertex );
+ aabb_extend_by_point_safe( bounds, texcoord );
+ }
+ bounds.origin.z() = 0;
+ bounds.extents.z() = 1;
+
+ // the bounds of a perfectly fitted texture transform
+ AABB perfect( Vector3( s_repeat * 0.5, t_repeat * 0.5, 0 ), Vector3( s_repeat * 0.5, t_repeat * 0.5, 1 ) );
+
+ // the difference between the current texture transform and the perfectly fitted transform
+ Matrix4 matrix( matrix4_translation_for_vec3( bounds.origin - perfect.origin ) );
+ matrix4_pivoted_scale_by_vec3( matrix, bounds.extents / perfect.extents, perfect.origin );
+ matrix4_affine_invert( matrix );
+
+ // apply the difference to the current texture transform
+ matrix4_premultiply_by_matrix4( st2tex, matrix );
+
+ Texdef_fromTransform( projection, (float)width, (float)height, st2tex );
+ Texdef_normalise( projection, (float)width, (float)height );
+}
+
+float Texdef_getDefaultTextureScale(){
+ return g_texdef_default_scale;
+}
+
+void TexDef_Construct_Default( TextureProjection& projection ){
+ projection.m_texdef.scale[0] = Texdef_getDefaultTextureScale();
+ projection.m_texdef.scale[1] = Texdef_getDefaultTextureScale();
+
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ FakeTexCoordsToTexMat( projection.m_texdef, projection.m_brushprimit_texdef );
+ }
+}
+
+
+
+void ShiftScaleRotate_fromFace( texdef_t& shiftScaleRotate, const TextureProjection& projection ){
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ TexMatToFakeTexCoords( projection.m_brushprimit_texdef, shiftScaleRotate );
+ }
+ else
+ {
+ shiftScaleRotate = projection.m_texdef;
+ }
+}
+
+void ShiftScaleRotate_toFace( const texdef_t& shiftScaleRotate, TextureProjection& projection ){
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_BRUSHPRIMITIVES ) {
+ // compute texture matrix
+ // the matrix returned must be understood as a qtexture_t with width=2 height=2
+ FakeTexCoordsToTexMat( shiftScaleRotate, projection.m_brushprimit_texdef );
+ }
+ else
+ {
+ projection.m_texdef = shiftScaleRotate;
+ }
+}
+
+
+inline void print_vector3( const Vector3& v ){
+ globalOutputStream() << "( " << v.x() << " " << v.y() << " " << v.z() << " )\n";
+}
+
+inline void print_3x3( const Matrix4& m ){
+ globalOutputStream() << "( " << m.xx() << " " << m.xy() << " " << m.xz() << " ) "
+ << "( " << m.yx() << " " << m.yy() << " " << m.yz() << " ) "
+ << "( " << m.zx() << " " << m.zy() << " " << m.zz() << " )\n";
+}
+
+
+inline Matrix4 matrix4_rotation_for_vector3( const Vector3& x, const Vector3& y, const Vector3& z ){
+ return Matrix4(
+ x.x(), x.y(), x.z(), 0,
+ y.x(), y.y(), y.z(), 0,
+ z.x(), z.y(), z.z(), 0,
+ 0, 0, 0, 1
+ );
+}
+
+inline Matrix4 matrix4_swap_axes( const Vector3& from, const Vector3& to ){
+ if ( from.x() != 0 && to.y() != 0 ) {
+ return matrix4_rotation_for_vector3( to, from, g_vector3_axis_z );
+ }
+
+ if ( from.x() != 0 && to.z() != 0 ) {
+ return matrix4_rotation_for_vector3( to, g_vector3_axis_y, from );
+ }
+
+ if ( from.y() != 0 && to.z() != 0 ) {
+ return matrix4_rotation_for_vector3( g_vector3_axis_x, to, from );
+ }
+
+ if ( from.y() != 0 && to.x() != 0 ) {
+ return matrix4_rotation_for_vector3( from, to, g_vector3_axis_z );
+ }
+
+ if ( from.z() != 0 && to.x() != 0 ) {
+ return matrix4_rotation_for_vector3( from, g_vector3_axis_y, to );
+ }
+
+ if ( from.z() != 0 && to.y() != 0 ) {
+ return matrix4_rotation_for_vector3( g_vector3_axis_x, from, to );
+ }
+
+ ERROR_MESSAGE( "unhandled axis swap case" );
+
+ return g_matrix4_identity;
+}
+
+inline Matrix4 matrix4_reflection_for_plane( const Plane3& plane ){
+ return Matrix4(
+ static_cast<float>( 1 - ( 2 * plane.a * plane.a ) ),
+ static_cast<float>( -2 * plane.a * plane.b ),
+ static_cast<float>( -2 * plane.a * plane.c ),
+ 0,
+ static_cast<float>( -2 * plane.b * plane.a ),
+ static_cast<float>( 1 - ( 2 * plane.b * plane.b ) ),
+ static_cast<float>( -2 * plane.b * plane.c ),
+ 0,
+ static_cast<float>( -2 * plane.c * plane.a ),
+ static_cast<float>( -2 * plane.c * plane.b ),
+ static_cast<float>( 1 - ( 2 * plane.c * plane.c ) ),
+ 0,
+ static_cast<float>( -2 * plane.d * plane.a ),
+ static_cast<float>( -2 * plane.d * plane.b ),
+ static_cast<float>( -2 * plane.d * plane.c ),
+ 1
+ );
+}
+
+inline Matrix4 matrix4_reflection_for_plane45( const Plane3& plane, const Vector3& from, const Vector3& to ){
+ Vector3 first = from;
+ Vector3 second = to;
+
+ if ( (vector3_dot( from, plane.normal() ) > 0) == (vector3_dot( to, plane.normal() ) > 0) ) {
+ first = vector3_negated( first );
+ second = vector3_negated( second );
+ }
+
+#if 0
+ globalOutputStream() << "normal: ";
+ print_vector3( plane.normal() );
+
+ globalOutputStream() << "from: ";
+ print_vector3( first );
+
+ globalOutputStream() << "to: ";
+ print_vector3( second );
+#endif
+
+ Matrix4 swap = matrix4_swap_axes( first, second );
+
+ Matrix4 tmp = matrix4_reflection_for_plane( plane );
+
+ swap.tx() = -static_cast<float>( -2 * plane.a * plane.d );
+ swap.ty() = -static_cast<float>( -2 * plane.b * plane.d );
+ swap.tz() = -static_cast<float>( -2 * plane.c * plane.d );
+
+ return swap;
+}
+
+void Texdef_transformLocked( TextureProjection& projection, std::size_t width, std::size_t height, const Plane3& plane, const Matrix4& identity2transformed ){
+ //globalOutputStream() << "identity2transformed: " << identity2transformed << "\n";
+
+ //globalOutputStream() << "plane.normal(): " << plane.normal() << "\n";
+
+ Vector3 normalTransformed( matrix4_transformed_direction( identity2transformed, plane.normal() ) );
+
+ //globalOutputStream() << "normalTransformed: " << normalTransformed << "\n";
+
+ // identity: identity space
+ // transformed: transformation
+ // stIdentity: base st projection space before transformation
+ // stTransformed: base st projection space after transformation
+ // stOriginal: original texdef space
+
+ // stTransformed2stOriginal = stTransformed -> transformed -> identity -> stIdentity -> stOriginal
+
+ Matrix4 identity2stIdentity;
+ Texdef_basisForNormal( projection, plane.normal(), identity2stIdentity );
+ //globalOutputStream() << "identity2stIdentity: " << identity2stIdentity << "\n";
+
+ if ( g_bp_globals.m_texdefTypeId == TEXDEFTYPEID_HALFLIFE ) {
+ matrix4_transform_direction( identity2transformed, projection.m_basis_s );
+ matrix4_transform_direction( identity2transformed, projection.m_basis_t );
+ }
+
+ Matrix4 transformed2stTransformed;
+ Texdef_basisForNormal( projection, normalTransformed, transformed2stTransformed );
+
+ Matrix4 stTransformed2identity( matrix4_affine_inverse( matrix4_multiplied_by_matrix4( transformed2stTransformed, identity2transformed ) ) );
+
+ Vector3 originalProjectionAxis( vector4_to_vector3( matrix4_affine_inverse( identity2stIdentity ).z() ) );
+
+ Vector3 transformedProjectionAxis( vector4_to_vector3( stTransformed2identity.z() ) );
+
+ Matrix4 stIdentity2stOriginal;
+ Texdef_toTransform( projection, (float)width, (float)height, stIdentity2stOriginal );
+ Matrix4 identity2stOriginal( matrix4_multiplied_by_matrix4( stIdentity2stOriginal, identity2stIdentity ) );
+
+ //globalOutputStream() << "originalProj: " << originalProjectionAxis << "\n";
+ //globalOutputStream() << "transformedProj: " << transformedProjectionAxis << "\n";
+ double dot = vector3_dot( originalProjectionAxis, transformedProjectionAxis );
+ //globalOutputStream() << "dot: " << dot << "\n";
+ if ( dot == 0 ) {
+ // The projection axis chosen for the transformed normal is at 90 degrees
+ // to the transformed projection axis chosen for the original normal.
+ // This happens when the projection axis is ambiguous - e.g. for the plane
+ // 'X == Y' the projection axis could be either X or Y.
+ //globalOutputStream() << "flipped\n";
+#if 0
+ globalOutputStream() << "projection off by 90\n";
+ globalOutputStream() << "normal: ";
+ print_vector3( plane.normal() );
+ globalOutputStream() << "original projection: ";
+ print_vector3( originalProjectionAxis );
+ globalOutputStream() << "transformed projection: ";
+ print_vector3( transformedProjectionAxis );
+#endif
+
+ Matrix4 identityCorrected = matrix4_reflection_for_plane45( plane, originalProjectionAxis, transformedProjectionAxis );
+
+ identity2stOriginal = matrix4_multiplied_by_matrix4( identity2stOriginal, identityCorrected );
+ }
+
+ Matrix4 stTransformed2stOriginal = matrix4_multiplied_by_matrix4( identity2stOriginal, stTransformed2identity );
+
+ Texdef_fromTransform( projection, (float)width, (float)height, stTransformed2stOriginal );
+ Texdef_normalise( projection, (float)width, (float)height );
+}
+
+#if 1
+void Q3_to_matrix( const texdef_t& texdef, float width, float height, const Vector3& normal, Matrix4& matrix ){
+ Normal_GetTransform( normal, matrix );
+
+ Matrix4 transform;
+
+ Texdef_toTransform( texdef, width, height, transform );
+
+ matrix4_multiply_by_matrix4( matrix, transform );
+}
+
+void BP_from_matrix( brushprimit_texdef_t& bp_texdef, const Vector3& normal, const Matrix4& transform ){
+ Matrix4 basis;
+ basis = g_matrix4_identity;
+ ComputeAxisBase( normal, vector4_to_vector3( basis.x() ), vector4_to_vector3( basis.y() ) );
+ vector4_to_vector3( basis.z() ) = normal;
+ matrix4_transpose( basis );
+ matrix4_affine_invert( basis );
+
+ Matrix4 basis2texture = matrix4_multiplied_by_matrix4( basis, transform );
+
+ BPTexdef_fromTransform( bp_texdef, basis2texture );
+}
+
+void Q3_to_BP( const texdef_t& texdef, float width, float height, const Vector3& normal, brushprimit_texdef_t& bp_texdef ){
+ Matrix4 matrix;
+ Q3_to_matrix( texdef, width, height, normal, matrix );
+ BP_from_matrix( bp_texdef, normal, matrix );
+}
+#endif
projects / xonotic / netradiant.git / blobdiff