This program 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.
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
#include <math.h>
#include "quakedef.h"
-void Sys_Error (char *error, ...);
-
vec3_t vec3_origin = {0,0,0};
-int nanmask = 255<<23;
+float ixtable[4096];
/*-----------------------------------------------------------------*/
-#define DEG2RAD( a ) ( a * M_PI ) / 180.0F
-
-void ProjectPointOnPlane( vec3_t dst, const vec3_t p, const vec3_t normal )
+float m_bytenormals[NUMVERTEXNORMALS][3] =
{
- float d;
- vec3_t n;
- float inv_denom;
-
- inv_denom = 1.0F / DotProduct( normal, normal );
-
- d = DotProduct( normal, p ) * inv_denom;
-
- n[0] = normal[0] * inv_denom;
- n[1] = normal[1] * inv_denom;
- n[2] = normal[2] * inv_denom;
-
- dst[0] = p[0] - d * n[0];
- dst[1] = p[1] - d * n[1];
- dst[2] = p[2] - d * n[2];
-}
-
-/*
-** assumes "src" is normalized
-*/
-void PerpendicularVector( vec3_t dst, const vec3_t src )
+{-0.525731, 0.000000, 0.850651}, {-0.442863, 0.238856, 0.864188},
+{-0.295242, 0.000000, 0.955423}, {-0.309017, 0.500000, 0.809017},
+{-0.162460, 0.262866, 0.951056}, {0.000000, 0.000000, 1.000000},
+{0.000000, 0.850651, 0.525731}, {-0.147621, 0.716567, 0.681718},
+{0.147621, 0.716567, 0.681718}, {0.000000, 0.525731, 0.850651},
+{0.309017, 0.500000, 0.809017}, {0.525731, 0.000000, 0.850651},
+{0.295242, 0.000000, 0.955423}, {0.442863, 0.238856, 0.864188},
+{0.162460, 0.262866, 0.951056}, {-0.681718, 0.147621, 0.716567},
+{-0.809017, 0.309017, 0.500000}, {-0.587785, 0.425325, 0.688191},
+{-0.850651, 0.525731, 0.000000}, {-0.864188, 0.442863, 0.238856},
+{-0.716567, 0.681718, 0.147621}, {-0.688191, 0.587785, 0.425325},
+{-0.500000, 0.809017, 0.309017}, {-0.238856, 0.864188, 0.442863},
+{-0.425325, 0.688191, 0.587785}, {-0.716567, 0.681718, -0.147621},
+{-0.500000, 0.809017, -0.309017}, {-0.525731, 0.850651, 0.000000},
+{0.000000, 0.850651, -0.525731}, {-0.238856, 0.864188, -0.442863},
+{0.000000, 0.955423, -0.295242}, {-0.262866, 0.951056, -0.162460},
+{0.000000, 1.000000, 0.000000}, {0.000000, 0.955423, 0.295242},
+{-0.262866, 0.951056, 0.162460}, {0.238856, 0.864188, 0.442863},
+{0.262866, 0.951056, 0.162460}, {0.500000, 0.809017, 0.309017},
+{0.238856, 0.864188, -0.442863}, {0.262866, 0.951056, -0.162460},
+{0.500000, 0.809017, -0.309017}, {0.850651, 0.525731, 0.000000},
+{0.716567, 0.681718, 0.147621}, {0.716567, 0.681718, -0.147621},
+{0.525731, 0.850651, 0.000000}, {0.425325, 0.688191, 0.587785},
+{0.864188, 0.442863, 0.238856}, {0.688191, 0.587785, 0.425325},
+{0.809017, 0.309017, 0.500000}, {0.681718, 0.147621, 0.716567},
+{0.587785, 0.425325, 0.688191}, {0.955423, 0.295242, 0.000000},
+{1.000000, 0.000000, 0.000000}, {0.951056, 0.162460, 0.262866},
+{0.850651, -0.525731, 0.000000}, {0.955423, -0.295242, 0.000000},
+{0.864188, -0.442863, 0.238856}, {0.951056, -0.162460, 0.262866},
+{0.809017, -0.309017, 0.500000}, {0.681718, -0.147621, 0.716567},
+{0.850651, 0.000000, 0.525731}, {0.864188, 0.442863, -0.238856},
+{0.809017, 0.309017, -0.500000}, {0.951056, 0.162460, -0.262866},
+{0.525731, 0.000000, -0.850651}, {0.681718, 0.147621, -0.716567},
+{0.681718, -0.147621, -0.716567}, {0.850651, 0.000000, -0.525731},
+{0.809017, -0.309017, -0.500000}, {0.864188, -0.442863, -0.238856},
+{0.951056, -0.162460, -0.262866}, {0.147621, 0.716567, -0.681718},
+{0.309017, 0.500000, -0.809017}, {0.425325, 0.688191, -0.587785},
+{0.442863, 0.238856, -0.864188}, {0.587785, 0.425325, -0.688191},
+{0.688191, 0.587785, -0.425325}, {-0.147621, 0.716567, -0.681718},
+{-0.309017, 0.500000, -0.809017}, {0.000000, 0.525731, -0.850651},
+{-0.525731, 0.000000, -0.850651}, {-0.442863, 0.238856, -0.864188},
+{-0.295242, 0.000000, -0.955423}, {-0.162460, 0.262866, -0.951056},
+{0.000000, 0.000000, -1.000000}, {0.295242, 0.000000, -0.955423},
+{0.162460, 0.262866, -0.951056}, {-0.442863, -0.238856, -0.864188},
+{-0.309017, -0.500000, -0.809017}, {-0.162460, -0.262866, -0.951056},
+{0.000000, -0.850651, -0.525731}, {-0.147621, -0.716567, -0.681718},
+{0.147621, -0.716567, -0.681718}, {0.000000, -0.525731, -0.850651},
+{0.309017, -0.500000, -0.809017}, {0.442863, -0.238856, -0.864188},
+{0.162460, -0.262866, -0.951056}, {0.238856, -0.864188, -0.442863},
+{0.500000, -0.809017, -0.309017}, {0.425325, -0.688191, -0.587785},
+{0.716567, -0.681718, -0.147621}, {0.688191, -0.587785, -0.425325},
+{0.587785, -0.425325, -0.688191}, {0.000000, -0.955423, -0.295242},
+{0.000000, -1.000000, 0.000000}, {0.262866, -0.951056, -0.162460},
+{0.000000, -0.850651, 0.525731}, {0.000000, -0.955423, 0.295242},
+{0.238856, -0.864188, 0.442863}, {0.262866, -0.951056, 0.162460},
+{0.500000, -0.809017, 0.309017}, {0.716567, -0.681718, 0.147621},
+{0.525731, -0.850651, 0.000000}, {-0.238856, -0.864188, -0.442863},
+{-0.500000, -0.809017, -0.309017}, {-0.262866, -0.951056, -0.162460},
+{-0.850651, -0.525731, 0.000000}, {-0.716567, -0.681718, -0.147621},
+{-0.716567, -0.681718, 0.147621}, {-0.525731, -0.850651, 0.000000},
+{-0.500000, -0.809017, 0.309017}, {-0.238856, -0.864188, 0.442863},
+{-0.262866, -0.951056, 0.162460}, {-0.864188, -0.442863, 0.238856},
+{-0.809017, -0.309017, 0.500000}, {-0.688191, -0.587785, 0.425325},
+{-0.681718, -0.147621, 0.716567}, {-0.442863, -0.238856, 0.864188},
+{-0.587785, -0.425325, 0.688191}, {-0.309017, -0.500000, 0.809017},
+{-0.147621, -0.716567, 0.681718}, {-0.425325, -0.688191, 0.587785},
+{-0.162460, -0.262866, 0.951056}, {0.442863, -0.238856, 0.864188},
+{0.162460, -0.262866, 0.951056}, {0.309017, -0.500000, 0.809017},
+{0.147621, -0.716567, 0.681718}, {0.000000, -0.525731, 0.850651},
+{0.425325, -0.688191, 0.587785}, {0.587785, -0.425325, 0.688191},
+{0.688191, -0.587785, 0.425325}, {-0.955423, 0.295242, 0.000000},
+{-0.951056, 0.162460, 0.262866}, {-1.000000, 0.000000, 0.000000},
+{-0.850651, 0.000000, 0.525731}, {-0.955423, -0.295242, 0.000000},
+{-0.951056, -0.162460, 0.262866}, {-0.864188, 0.442863, -0.238856},
+{-0.951056, 0.162460, -0.262866}, {-0.809017, 0.309017, -0.500000},
+{-0.864188, -0.442863, -0.238856}, {-0.951056, -0.162460, -0.262866},
+{-0.809017, -0.309017, -0.500000}, {-0.681718, 0.147621, -0.716567},
+{-0.681718, -0.147621, -0.716567}, {-0.850651, 0.000000, -0.525731},
+{-0.688191, 0.587785, -0.425325}, {-0.587785, 0.425325, -0.688191},
+{-0.425325, 0.688191, -0.587785}, {-0.425325, -0.688191, -0.587785},
+{-0.587785, -0.425325, -0.688191}, {-0.688191, -0.587785, -0.425325},
+};
+
+qbyte NormalToByte(const vec3_t n)
{
- int pos;
- int i;
- float minelem = 1.0F;
- vec3_t tempvec;
+ int i, best;
+ float bestdistance, distance;
- /*
- ** find the smallest magnitude axially aligned vector
- */
- for ( pos = 0, i = 0; i < 3; i++ )
+ best = 0;
+ bestdistance = DotProduct (n, m_bytenormals[0]);
+ for (i = 1;i < NUMVERTEXNORMALS;i++)
{
- if ( fabs( src[i] ) < minelem )
+ distance = DotProduct (n, m_bytenormals[i]);
+ if (distance > bestdistance)
{
- pos = i;
- minelem = fabs( src[i] );
+ bestdistance = distance;
+ best = i;
}
}
- tempvec[0] = tempvec[1] = tempvec[2] = 0.0F;
- tempvec[pos] = 1.0F;
-
- /*
- ** project the point onto the plane defined by src
- */
- ProjectPointOnPlane( dst, tempvec, src );
-
- /*
- ** normalize the result
- */
- VectorNormalize( dst );
+ return best;
}
-#ifdef _WIN32
-#pragma optimize( "", off )
-#endif
-
-
-void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees )
+// note: uses byte partly to force unsigned for the validity check
+void ByteToNormal(qbyte num, vec3_t n)
{
- float m[3][3];
- float im[3][3];
- float zrot[3][3];
- float tmpmat[3][3];
- float rot[3][3];
- int i;
- vec3_t vr, vup, vf;
-
- vf[0] = dir[0];
- vf[1] = dir[1];
- vf[2] = dir[2];
-
- PerpendicularVector( vr, dir );
- CrossProduct( vr, vf, vup );
-
- m[0][0] = vr[0];
- m[1][0] = vr[1];
- m[2][0] = vr[2];
-
- m[0][1] = vup[0];
- m[1][1] = vup[1];
- m[2][1] = vup[2];
-
- m[0][2] = vf[0];
- m[1][2] = vf[1];
- m[2][2] = vf[2];
-
- memcpy( im, m, sizeof( im ) );
-
- im[0][1] = m[1][0];
- im[0][2] = m[2][0];
- im[1][0] = m[0][1];
- im[1][2] = m[2][1];
- im[2][0] = m[0][2];
- im[2][1] = m[1][2];
-
- memset( zrot, 0, sizeof( zrot ) );
- zrot[0][0] = zrot[1][1] = zrot[2][2] = 1.0F;
-
- zrot[0][0] = cos( DEG2RAD( degrees ) );
- zrot[0][1] = sin( DEG2RAD( degrees ) );
- zrot[1][0] = -sin( DEG2RAD( degrees ) );
- zrot[1][1] = cos( DEG2RAD( degrees ) );
-
- R_ConcatRotations( m, zrot, tmpmat );
- R_ConcatRotations( tmpmat, im, rot );
-
- for ( i = 0; i < 3; i++ )
- {
- dst[i] = rot[i][0] * point[0] + rot[i][1] * point[1] + rot[i][2] * point[2];
- }
+ if (num < NUMVERTEXNORMALS)
+ VectorCopy(m_bytenormals[num], n);
+ else
+ VectorClear(n); // FIXME: complain?
}
-#ifdef _WIN32
-#pragma optimize( "", on )
-#endif
-
-/*-----------------------------------------------------------------*/
+float Q_RSqrt(float number)
+{
+ float y;
+ if (number == 0.0f)
+ return 0.0f;
-float anglemod(float a)
-{
-#if 0
- if (a >= 0)
- a -= 360*(int)(a/360);
- else
- a += 360*( 1 + (int)(-a/360) );
-#endif
- a = (360.0/65536) * ((int)(a*(65536/360.0)) & 65535);
- return a;
+ *((int *)&y) = 0x5f3759df - ((* (int *) &number) >> 1);
+ return y * (1.5f - (number * 0.5f * y * y));
}
-int BoxOnPlaneSide0 (vec3_t emins, vec3_t emaxs, mplane_t *p) {return (((p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]) >= p->dist) | (((p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]) < p->dist) << 1));}
-int BoxOnPlaneSide1 (vec3_t emins, vec3_t emaxs, mplane_t *p) {return (((p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]) >= p->dist) | (((p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]) < p->dist) << 1));}
-int BoxOnPlaneSide2 (vec3_t emins, vec3_t emaxs, mplane_t *p) {return (((p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]) >= p->dist) | (((p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]) < p->dist) << 1));}
-int BoxOnPlaneSide3 (vec3_t emins, vec3_t emaxs, mplane_t *p) {return (((p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]) >= p->dist) | (((p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]) < p->dist) << 1));}
-int BoxOnPlaneSide4 (vec3_t emins, vec3_t emaxs, mplane_t *p) {return (((p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]) >= p->dist) | (((p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]) < p->dist) << 1));}
-int BoxOnPlaneSide5 (vec3_t emins, vec3_t emaxs, mplane_t *p) {return (((p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]) >= p->dist) | (((p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]) < p->dist) << 1));}
-int BoxOnPlaneSide6 (vec3_t emins, vec3_t emaxs, mplane_t *p) {return (((p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]) >= p->dist) | (((p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]) < p->dist) << 1));}
-int BoxOnPlaneSide7 (vec3_t emins, vec3_t emaxs, mplane_t *p) {return (((p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]) >= p->dist) | (((p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]) < p->dist) << 1));}
-void BoxOnPlaneSideClassify(mplane_t *p)
+// assumes "src" is normalized
+void PerpendicularVector( vec3_t dst, const vec3_t src )
{
- if (p->normal[2] < 0) // 4
+ // LordHavoc: optimized to death and beyond
+ int pos;
+ float minelem;
+
+ if (src[0])
{
- if (p->normal[1] < 0) // 2
+ dst[0] = 0;
+ if (src[1])
{
- if (p->normal[0] < 0) // 1
- p->BoxOnPlaneSideFunc = BoxOnPlaneSide7;
+ dst[1] = 0;
+ if (src[2])
+ {
+ dst[2] = 0;
+ pos = 0;
+ minelem = fabs(src[0]);
+ if (fabs(src[1]) < minelem)
+ {
+ pos = 1;
+ minelem = fabs(src[1]);
+ }
+ if (fabs(src[2]) < minelem)
+ pos = 2;
+
+ dst[pos] = 1;
+ dst[0] -= src[pos] * src[0];
+ dst[1] -= src[pos] * src[1];
+ dst[2] -= src[pos] * src[2];
+
+ // normalize the result
+ VectorNormalize(dst);
+ }
else
- p->BoxOnPlaneSideFunc = BoxOnPlaneSide6;
+ dst[2] = 1;
}
else
{
- if (p->normal[0] < 0) // 1
- p->BoxOnPlaneSideFunc = BoxOnPlaneSide5;
- else
- p->BoxOnPlaneSideFunc = BoxOnPlaneSide4;
+ dst[1] = 1;
+ dst[2] = 0;
}
}
else
{
- if (p->normal[1] < 0) // 2
- {
- if (p->normal[0] < 0) // 1
- p->BoxOnPlaneSideFunc = BoxOnPlaneSide3;
- else
- p->BoxOnPlaneSideFunc = BoxOnPlaneSide2;
- }
- else
- {
- if (p->normal[0] < 0) // 1
- p->BoxOnPlaneSideFunc = BoxOnPlaneSide1;
- else
- p->BoxOnPlaneSideFunc = BoxOnPlaneSide0;
- }
+ dst[0] = 1;
+ dst[1] = 0;
+ dst[2] = 0;
}
}
-void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up)
+
+// LordHavoc: like AngleVectors, but taking a forward vector instead of angles, useful!
+void VectorVectors(const vec3_t forward, vec3_t right, vec3_t up)
{
- float angle;
- float sr, sp, sy, cr, cp, cy;
-
- angle = angles[YAW] * (M_PI*2 / 360);
- sy = sin(angle);
- cy = cos(angle);
- angle = angles[PITCH] * (M_PI*2 / 360);
- sp = sin(angle);
- cp = cos(angle);
- angle = angles[ROLL] * (M_PI*2 / 360);
- sr = sin(angle);
- cr = cos(angle);
+ float d;
- forward[0] = cp*cy;
- forward[1] = cp*sy;
- forward[2] = -sp;
- right[0] = (-1*sr*sp*cy+-1*cr*-sy);
- right[1] = (-1*sr*sp*sy+-1*cr*cy);
- right[2] = -1*sr*cp;
- up[0] = (cr*sp*cy+-sr*-sy);
- up[1] = (cr*sp*sy+-sr*cy);
- up[2] = cr*cp;
+ right[0] = forward[2];
+ right[1] = -forward[0];
+ right[2] = forward[1];
+
+ d = DotProduct(forward, right);
+ right[0] -= d * forward[0];
+ right[1] -= d * forward[1];
+ right[2] -= d * forward[2];
+ VectorNormalizeFast(right);
+ CrossProduct(right, forward, up);
}
-int VectorCompare (vec3_t v1, vec3_t v2)
+void VectorVectorsDouble(const double *forward, double *right, double *up)
{
- int i;
-
- for (i=0 ; i<3 ; i++)
- if (v1[i] != v2[i])
- return 0;
-
- return 1;
+ double d;
+
+ right[0] = forward[2];
+ right[1] = -forward[0];
+ right[2] = forward[1];
+
+ d = DotProduct(forward, right);
+ right[0] -= d * forward[0];
+ right[1] -= d * forward[1];
+ right[2] -= d * forward[2];
+ VectorNormalize(right);
+ CrossProduct(right, forward, up);
}
-void VectorMA (vec3_t veca, float scale, vec3_t vecb, vec3_t vecc)
+void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees )
{
- vecc[0] = veca[0] + scale*vecb[0];
- vecc[1] = veca[1] + scale*vecb[1];
- vecc[2] = veca[2] + scale*vecb[2];
+ float t0, t1;
+ float angle, c, s;
+ vec3_t vr, vu, vf;
+
+ angle = DEG2RAD(degrees);
+ c = cos(angle);
+ s = sin(angle);
+ VectorCopy(dir, vf);
+ VectorVectors(vf, vr, vu);
+
+ t0 = vr[0] * c + vu[0] * -s;
+ t1 = vr[0] * s + vu[0] * c;
+ dst[0] = (t0 * vr[0] + t1 * vu[0] + vf[0] * vf[0]) * point[0]
+ + (t0 * vr[1] + t1 * vu[1] + vf[0] * vf[1]) * point[1]
+ + (t0 * vr[2] + t1 * vu[2] + vf[0] * vf[2]) * point[2];
+
+ t0 = vr[1] * c + vu[1] * -s;
+ t1 = vr[1] * s + vu[1] * c;
+ dst[1] = (t0 * vr[0] + t1 * vu[0] + vf[1] * vf[0]) * point[0]
+ + (t0 * vr[1] + t1 * vu[1] + vf[1] * vf[1]) * point[1]
+ + (t0 * vr[2] + t1 * vu[2] + vf[1] * vf[2]) * point[2];
+
+ t0 = vr[2] * c + vu[2] * -s;
+ t1 = vr[2] * s + vu[2] * c;
+ dst[2] = (t0 * vr[0] + t1 * vu[0] + vf[2] * vf[0]) * point[0]
+ + (t0 * vr[1] + t1 * vu[1] + vf[2] * vf[1]) * point[1]
+ + (t0 * vr[2] + t1 * vu[2] + vf[2] * vf[2]) * point[2];
}
+/*-----------------------------------------------------------------*/
-vec_t _DotProduct (vec3_t v1, vec3_t v2)
+
+void BoxOnPlaneSideClassify(mplane_t *p)
{
- return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2];
+ p->signbits = 0;
+ if (p->normal[0] < 0) // 1
+ p->signbits |= 1;
+ if (p->normal[1] < 0) // 2
+ p->signbits |= 2;
+ if (p->normal[2] < 0) // 4
+ p->signbits |= 4;
}
-void _VectorSubtract (vec3_t veca, vec3_t vecb, vec3_t out)
+void PlaneClassify(mplane_t *p)
{
- out[0] = veca[0]-vecb[0];
- out[1] = veca[1]-vecb[1];
- out[2] = veca[2]-vecb[2];
+ if (p->normal[0] == 1)
+ p->type = 0;
+ else if (p->normal[1] == 1)
+ p->type = 1;
+ else if (p->normal[2] == 1)
+ p->type = 2;
+ else
+ p->type = 3;
+ BoxOnPlaneSideClassify(p);
}
-void _VectorAdd (vec3_t veca, vec3_t vecb, vec3_t out)
+int BoxOnPlaneSide (const vec3_t emins, const vec3_t emaxs, const mplane_t *p)
{
- out[0] = veca[0]+vecb[0];
- out[1] = veca[1]+vecb[1];
- out[2] = veca[2]+vecb[2];
+ if (p->type < 3)
+ return ((emaxs[p->type] >= p->dist) | ((emins[p->type] < p->dist) << 1));
+ switch(p->signbits)
+ {
+ default:
+ case 0:
+ return (((p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]) >= p->dist) | (((p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]) < p->dist) << 1));
+ case 1:
+ return (((p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]) >= p->dist) | (((p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]) < p->dist) << 1));
+ case 2:
+ return (((p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]) >= p->dist) | (((p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]) < p->dist) << 1));
+ case 3:
+ return (((p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]) >= p->dist) | (((p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]) < p->dist) << 1));
+ case 4:
+ return (((p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]) >= p->dist) | (((p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]) < p->dist) << 1));
+ case 5:
+ return (((p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]) >= p->dist) | (((p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]) < p->dist) << 1));
+ case 6:
+ return (((p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]) >= p->dist) | (((p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]) < p->dist) << 1));
+ case 7:
+ return (((p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]) >= p->dist) | (((p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]) < p->dist) << 1));
+ }
}
-void _VectorCopy (vec3_t in, vec3_t out)
+void AngleVectors (const vec3_t angles, vec3_t forward, vec3_t right, vec3_t up)
{
- out[0] = in[0];
- out[1] = in[1];
- out[2] = in[2];
+ double angle, sr, sp, sy, cr, cp, cy;
+
+ angle = angles[YAW] * (M_PI*2 / 360);
+ sy = sin(angle);
+ cy = cos(angle);
+ angle = angles[PITCH] * (M_PI*2 / 360);
+ sp = sin(angle);
+ cp = cos(angle);
+ if (forward)
+ {
+ forward[0] = cp*cy;
+ forward[1] = cp*sy;
+ forward[2] = -sp;
+ }
+ if (right || up)
+ {
+ angle = angles[ROLL] * (M_PI*2 / 360);
+ sr = sin(angle);
+ cr = cos(angle);
+ if (right)
+ {
+ right[0] = -1*(sr*sp*cy+cr*-sy);
+ right[1] = -1*(sr*sp*sy+cr*cy);
+ right[2] = -1*(sr*cp);
+ }
+ if (up)
+ {
+ up[0] = (cr*sp*cy+-sr*-sy);
+ up[1] = (cr*sp*sy+-sr*cy);
+ up[2] = cr*cp;
+ }
+ }
}
-// LordHavoc: changed CrossProduct to a #define
-/*
-void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross)
+void AngleVectorsFLU (const vec3_t angles, vec3_t forward, vec3_t left, vec3_t up)
{
- cross[0] = v1[1]*v2[2] - v1[2]*v2[1];
- cross[1] = v1[2]*v2[0] - v1[0]*v2[2];
- cross[2] = v1[0]*v2[1] - v1[1]*v2[0];
-}
-*/
+ double angle, sr, sp, sy, cr, cp, cy;
-double sqrt(double x);
+ angle = angles[YAW] * (M_PI*2 / 360);
+ sy = sin(angle);
+ cy = cos(angle);
+ angle = angles[PITCH] * (M_PI*2 / 360);
+ sp = sin(angle);
+ cp = cos(angle);
+ if (forward)
+ {
+ forward[0] = cp*cy;
+ forward[1] = cp*sy;
+ forward[2] = -sp;
+ }
+ if (left || up)
+ {
+ angle = angles[ROLL] * (M_PI*2 / 360);
+ sr = sin(angle);
+ cr = cos(angle);
+ if (left)
+ {
+ left[0] = sr*sp*cy+cr*-sy;
+ left[1] = sr*sp*sy+cr*cy;
+ left[2] = sr*cp;
+ }
+ if (up)
+ {
+ up[0] = cr*sp*cy+-sr*-sy;
+ up[1] = cr*sp*sy+-sr*cy;
+ up[2] = cr*cp;
+ }
+ }
+}
-vec_t Length(vec3_t v)
+void AngleMatrix (const vec3_t angles, const vec3_t translate, vec_t matrix[][4])
{
- int i;
- float length;
-
- length = 0;
- for (i=0 ; i< 3 ; i++)
- length += v[i]*v[i];
- length = sqrt (length); // FIXME
+ double angle, sr, sp, sy, cr, cp, cy;
- return length;
+ angle = angles[YAW] * (M_PI*2 / 360);
+ sy = sin(angle);
+ cy = cos(angle);
+ angle = angles[PITCH] * (M_PI*2 / 360);
+ sp = sin(angle);
+ cp = cos(angle);
+ angle = angles[ROLL] * (M_PI*2 / 360);
+ sr = sin(angle);
+ cr = cos(angle);
+ matrix[0][0] = cp*cy;
+ matrix[0][1] = sr*sp*cy+cr*-sy;
+ matrix[0][2] = cr*sp*cy+-sr*-sy;
+ matrix[0][3] = translate[0];
+ matrix[1][0] = cp*sy;
+ matrix[1][1] = sr*sp*sy+cr*cy;
+ matrix[1][2] = cr*sp*sy+-sr*cy;
+ matrix[1][3] = translate[1];
+ matrix[2][0] = -sp;
+ matrix[2][1] = sr*cp;
+ matrix[2][2] = cr*cp;
+ matrix[2][3] = translate[2];
}
-// LordHavoc: renamed these to Length, and made the normal ones #define
+
+// LordHavoc: renamed this to Length, and made the normal one a #define
float VectorNormalizeLength (vec3_t v)
{
- float length, ilength;
+ float length, ilength;
length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
- length = sqrt (length); // FIXME
+ length = sqrt (length);
if (length)
{
v[1] *= ilength;
v[2] *= ilength;
}
-
- return length;
-
-}
-
-float VectorNormalizeLength2 (vec3_t v, vec3_t dest) // LordHavoc: added to allow copying while doing the calculation...
-{
- float length, ilength;
-
- length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
- length = sqrt (length); // FIXME
- if (length)
- {
- ilength = 1/length;
- dest[0] = v[0] * ilength;
- dest[1] = v[1] * ilength;
- dest[2] = v[2] * ilength;
- }
- else
- dest[0] = dest[1] = dest[2] = 0;
-
return length;
}
-void VectorInverse (vec3_t v)
-{
- v[0] = -v[0];
- v[1] = -v[1];
- v[2] = -v[2];
-}
-
-void VectorScale (vec3_t in, vec_t scale, vec3_t out)
-{
- out[0] = in[0]*scale;
- out[1] = in[1]*scale;
- out[2] = in[2]*scale;
-}
-
-
-int Q_log2(int val)
-{
- int answer=0;
- while (val>>=1)
- answer++;
- return answer;
-}
-
/*
================
R_ConcatRotations
================
*/
-void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3])
+void R_ConcatRotations (const float in1[3*3], const float in2[3*3], float out[3*3])
{
- out[0][0] = in1[0][0] * in2[0][0] + in1[0][1] * in2[1][0] + in1[0][2] * in2[2][0];
- out[0][1] = in1[0][0] * in2[0][1] + in1[0][1] * in2[1][1] + in1[0][2] * in2[2][1];
- out[0][2] = in1[0][0] * in2[0][2] + in1[0][1] * in2[1][2] + in1[0][2] * in2[2][2];
- out[1][0] = in1[1][0] * in2[0][0] + in1[1][1] * in2[1][0] + in1[1][2] * in2[2][0];
- out[1][1] = in1[1][0] * in2[0][1] + in1[1][1] * in2[1][1] + in1[1][2] * in2[2][1];
- out[1][2] = in1[1][0] * in2[0][2] + in1[1][1] * in2[1][2] + in1[1][2] * in2[2][2];
- out[2][0] = in1[2][0] * in2[0][0] + in1[2][1] * in2[1][0] + in1[2][2] * in2[2][0];
- out[2][1] = in1[2][0] * in2[0][1] + in1[2][1] * in2[1][1] + in1[2][2] * in2[2][1];
- out[2][2] = in1[2][0] * in2[0][2] + in1[2][1] * in2[1][2] + in1[2][2] * in2[2][2];
+ out[0*3+0] = in1[0*3+0] * in2[0*3+0] + in1[0*3+1] * in2[1*3+0] + in1[0*3+2] * in2[2*3+0];
+ out[0*3+1] = in1[0*3+0] * in2[0*3+1] + in1[0*3+1] * in2[1*3+1] + in1[0*3+2] * in2[2*3+1];
+ out[0*3+2] = in1[0*3+0] * in2[0*3+2] + in1[0*3+1] * in2[1*3+2] + in1[0*3+2] * in2[2*3+2];
+ out[1*3+0] = in1[1*3+0] * in2[0*3+0] + in1[1*3+1] * in2[1*3+0] + in1[1*3+2] * in2[2*3+0];
+ out[1*3+1] = in1[1*3+0] * in2[0*3+1] + in1[1*3+1] * in2[1*3+1] + in1[1*3+2] * in2[2*3+1];
+ out[1*3+2] = in1[1*3+0] * in2[0*3+2] + in1[1*3+1] * in2[1*3+2] + in1[1*3+2] * in2[2*3+2];
+ out[2*3+0] = in1[2*3+0] * in2[0*3+0] + in1[2*3+1] * in2[1*3+0] + in1[2*3+2] * in2[2*3+0];
+ out[2*3+1] = in1[2*3+0] * in2[0*3+1] + in1[2*3+1] * in2[1*3+1] + in1[2*3+2] * in2[2*3+1];
+ out[2*3+2] = in1[2*3+0] * in2[0*3+2] + in1[2*3+1] * in2[1*3+2] + in1[2*3+2] * in2[2*3+2];
}
R_ConcatTransforms
================
*/
-void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4])
+void R_ConcatTransforms (const float in1[3*4], const float in2[3*4], float out[3*4])
{
- out[0][0] = in1[0][0] * in2[0][0] + in1[0][1] * in2[1][0] + in1[0][2] * in2[2][0];
- out[0][1] = in1[0][0] * in2[0][1] + in1[0][1] * in2[1][1] + in1[0][2] * in2[2][1];
- out[0][2] = in1[0][0] * in2[0][2] + in1[0][1] * in2[1][2] + in1[0][2] * in2[2][2];
- out[0][3] = in1[0][0] * in2[0][3] + in1[0][1] * in2[1][3] + in1[0][2] * in2[2][3] + in1[0][3];
- out[1][0] = in1[1][0] * in2[0][0] + in1[1][1] * in2[1][0] + in1[1][2] * in2[2][0];
- out[1][1] = in1[1][0] * in2[0][1] + in1[1][1] * in2[1][1] + in1[1][2] * in2[2][1];
- out[1][2] = in1[1][0] * in2[0][2] + in1[1][1] * in2[1][2] + in1[1][2] * in2[2][2];
- out[1][3] = in1[1][0] * in2[0][3] + in1[1][1] * in2[1][3] + in1[1][2] * in2[2][3] + in1[1][3];
- out[2][0] = in1[2][0] * in2[0][0] + in1[2][1] * in2[1][0] + in1[2][2] * in2[2][0];
- out[2][1] = in1[2][0] * in2[0][1] + in1[2][1] * in2[1][1] + in1[2][2] * in2[2][1];
- out[2][2] = in1[2][0] * in2[0][2] + in1[2][1] * in2[1][2] + in1[2][2] * in2[2][2];
- out[2][3] = in1[2][0] * in2[0][3] + in1[2][1] * in2[1][3] + in1[2][2] * in2[2][3] + in1[2][3];
+ out[0*4+0] = in1[0*4+0] * in2[0*4+0] + in1[0*4+1] * in2[1*4+0] + in1[0*4+2] * in2[2*4+0];
+ out[0*4+1] = in1[0*4+0] * in2[0*4+1] + in1[0*4+1] * in2[1*4+1] + in1[0*4+2] * in2[2*4+1];
+ out[0*4+2] = in1[0*4+0] * in2[0*4+2] + in1[0*4+1] * in2[1*4+2] + in1[0*4+2] * in2[2*4+2];
+ out[0*4+3] = in1[0*4+0] * in2[0*4+3] + in1[0*4+1] * in2[1*4+3] + in1[0*4+2] * in2[2*4+3] + in1[0*4+3];
+ out[1*4+0] = in1[1*4+0] * in2[0*4+0] + in1[1*4+1] * in2[1*4+0] + in1[1*4+2] * in2[2*4+0];
+ out[1*4+1] = in1[1*4+0] * in2[0*4+1] + in1[1*4+1] * in2[1*4+1] + in1[1*4+2] * in2[2*4+1];
+ out[1*4+2] = in1[1*4+0] * in2[0*4+2] + in1[1*4+1] * in2[1*4+2] + in1[1*4+2] * in2[2*4+2];
+ out[1*4+3] = in1[1*4+0] * in2[0*4+3] + in1[1*4+1] * in2[1*4+3] + in1[1*4+2] * in2[2*4+3] + in1[1*4+3];
+ out[2*4+0] = in1[2*4+0] * in2[0*4+0] + in1[2*4+1] * in2[1*4+0] + in1[2*4+2] * in2[2*4+0];
+ out[2*4+1] = in1[2*4+0] * in2[0*4+1] + in1[2*4+1] * in2[1*4+1] + in1[2*4+2] * in2[2*4+1];
+ out[2*4+2] = in1[2*4+0] * in2[0*4+2] + in1[2*4+1] * in2[1*4+2] + in1[2*4+2] * in2[2*4+2];
+ out[2*4+3] = in1[2*4+0] * in2[0*4+3] + in1[2*4+1] * in2[1*4+3] + in1[2*4+2] * in2[2*4+3] + in1[2*4+3];
}
-
-/*
-===================
-FloorDivMod
-
-Returns mathematically correct (floor-based) quotient and remainder for
-numer and denom, both of which should contain no fractional part. The
-quotient must fit in 32 bits.
-====================
-*/
-
-void FloorDivMod (double numer, double denom, int *quotient,
- int *rem)
+float RadiusFromBounds (const vec3_t mins, const vec3_t maxs)
{
- int q, r;
- double x;
+ vec3_t m1, m2;
+ VectorMultiply(mins, mins, m1);
+ VectorMultiply(maxs, maxs, m2);
+ return sqrt(max(m1[0], m2[0]) + max(m1[1], m2[1]) + max(m1[2], m2[2]));
+}
-#ifndef PARANOID
- if (denom <= 0.0)
- Sys_Error ("FloorDivMod: bad denominator %d\n", denom);
+float RadiusFromBoundsAndOrigin (const vec3_t mins, const vec3_t maxs, const vec3_t origin)
+{
+ vec3_t m1, m2;
+ VectorSubtract(mins, origin, m1);VectorMultiply(m1, m1, m1);
+ VectorSubtract(maxs, origin, m2);VectorMultiply(m2, m2, m2);
+ return sqrt(max(m1[0], m2[0]) + max(m1[1], m2[1]) + max(m1[2], m2[2]));
+}
-// if ((floor(numer) != numer) || (floor(denom) != denom))
-// Sys_Error ("FloorDivMod: non-integer numer or denom %f %f\n",
-// numer, denom);
-#endif
+void Mathlib_Init(void)
+{
+ int a;
- if (numer >= 0.0)
- {
+ // LordHavoc: setup 1.0f / N table for quick recipricols of integers
+ ixtable[0] = 0;
+ for (a = 1;a < 4096;a++)
+ ixtable[a] = 1.0f / a;
+}
- x = floor(numer / denom);
- q = (int)x;
- r = (int)floor(numer - (x * denom));
- }
- else
- {
- //
- // perform operations with positive values, and fix mod to make floor-based
- //
- x = floor(-numer / denom);
- q = -(int)x;
- r = (int)floor(-numer - (x * denom));
- if (r != 0)
- {
- q--;
- r = (int)denom - r;
- }
- }
+#include "matrixlib.h"
- *quotient = q;
- *rem = r;
+void Matrix4x4_Print (const matrix4x4_t *in)
+{
+ Con_Printf("%f %f %f %f\n%f %f %f %f\n%f %f %f %f\n%f %f %f %f\n"
+ , in->m[0][0], in->m[0][1], in->m[0][2], in->m[0][3]
+ , in->m[1][0], in->m[1][1], in->m[1][2], in->m[1][3]
+ , in->m[2][0], in->m[2][1], in->m[2][2], in->m[2][3]
+ , in->m[3][0], in->m[3][1], in->m[3][2], in->m[3][3]);
}
-
-/*
-===================
-GreatestCommonDivisor
-====================
-*/
-int GreatestCommonDivisor (int i1, int i2)
+int Math_atov(const char *s, vec3_t out)
{
- if (i1 > i2)
- {
- if (i2 == 0)
- return (i1);
- return GreatestCommonDivisor (i2, i1 % i2);
- }
- else
+ int i;
+ VectorClear(out);
+ if (*s == '\'')
+ s++;
+ for (i = 0;i < 3;i++)
{
- if (i1 == 0)
- return (i2);
- return GreatestCommonDivisor (i1, i2 % i1);
+ while (*s == ' ' || *s == '\t')
+ s++;
+ out[i] = atof (s);
+ if (out[i] == 0 && *s != '-' && *s != '+' && (*s < '0' || *s > '9'))
+ break; // not a number
+ while (*s && *s != ' ' && *s !='\t' && *s != '\'')
+ s++;
+ if (*s == '\'')
+ break;
}
+ return i;
}
+
projects / xonotic / darkplaces.git / blobdiff