contrib/bkgrnd2d/bkgrnd2d.cpp

   1 /*\r
   2 Copyright (C) 2003 Reed Mideke.\r
   3 \r
   4 This file is part of GtkRadiant.\r
   5 \r
   6 GtkRadiant is free software; you can redistribute it and/or modify\r
   7 it under the terms of the GNU General Public License as published by\r
   8 the Free Software Foundation; either version 2 of the License, or\r
   9 (at your option) any later version.\r
  10 \r
  11 GtkRadiant is distributed in the hope that it will be useful,\r
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 GNU General Public License for more details.\r
  15 \r
  16 You should have received a copy of the GNU General Public License\r
  17 along with GtkRadiant; if not, write to the Free Software\r
  18 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA\r
  19 */\r
  20 \r
  21 //\r
  22 // bkgrnd2d Plugin\r
  23 //\r
  24 // Code by reyalP aka Reed Mideke\r
  25 //\r
  26 // Based on various other plugins\r
  27 //\r
  28 \r
  29 #include "bkgrnd2d.h"\r
  30 \r
  31 CBackgroundRender render;\r
  32 \r
  33 CBackgroundImage backgroundXY(XY),backgroundXZ(XZ),backgroundYZ(YZ);\r
  34 \r
  35 CBackgroundRender::CBackgroundRender()\r
  36 {\r
  37         refCount = 1;\r
  38 }\r
  39 \r
  40 CBackgroundRender::~CBackgroundRender()\r
  41 {\r
  42 }\r
  43 \r
  44 void CBackgroundRender::Register()\r
  45 {\r
  46         g_QglTable.m_pfnHookGL2DWindow( this );\r
  47 }\r
  48 \r
  49 void CBackgroundRender::Draw2D( VIEWTYPE vt )\r
  50 {\r
  51         switch(vt)\r
  52         {\r
  53         case XY:\r
  54                 backgroundXY.Render();\r
  55                 break;\r
  56         case XZ:\r
  57                 backgroundXZ.Render();\r
  58                 break;\r
  59         case YZ:\r
  60                 backgroundYZ.Render();\r
  61                 break;\r
  62         }\r
  63 }\r
  64 \r
  65 \r
  66 CBackgroundImage::CBackgroundImage(VIEWTYPE vt)\r
  67 {\r
  68         m_tex = NULL;\r
  69         m_alpha = 0.5;\r
  70 \r
  71         // TODO, sensible defaults ? Or not show until we have extents ?\r
  72         m_xmin = m_ymin = 0.0f;\r
  73         m_xmax = m_ymax = 0.0f;\r
  74 \r
  75         m_bActive = false;\r
  76 \r
  77         m_vt = vt;\r
  78 \r
  79         switch(m_vt)\r
  80         {\r
  81                 case XY:\r
  82                         m_ix = 0;\r
  83                         m_iy = 1;\r
  84                         break;\r
  85                 case XZ:\r
  86                         m_ix = 0;\r
  87                         m_iy = 2;\r
  88                         break;\r
  89                 case YZ:\r
  90                         m_ix = 1;\r
  91                         m_iy = 2;\r
  92                         break;\r
  93         }\r
  94 }\r
  95 \r
  96 /*\r
  97  * should cleanup, but I don't think we can be sure it happens before our \r
  98  * interfaces are gone\r
  99 CBackgroundImage::~CBackgroundImage()\r
 100 {\r
 101 }\r
 102 */\r
 103 \r
 104 void CBackgroundImage::Cleanup()\r
 105 {\r
 106         if(m_tex) {\r
 107                 g_QglTable.m_pfn_qglDeleteTextures(1,&m_tex->texture_number);\r
 108                 g_free(m_tex);\r
 109                 m_tex = NULL;\r
 110         }\r
 111 }\r
 112 \r
 113 void CBackgroundImage::Render()\r
 114 {\r
 115         if (!m_bActive || !Valid())\r
 116                 return;\r
 117         g_QglTable.m_pfn_qglPushAttrib(GL_ALL_ATTRIB_BITS);\r
 118 \r
 119         g_QglTable.m_pfn_qglEnable(GL_TEXTURE_2D);\r
 120         g_QglTable.m_pfn_qglEnable(GL_BLEND);\r
 121         g_QglTable.m_pfn_qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);\r
 122         g_QglTable.m_pfn_qglTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);\r
 123         g_QglTable.m_pfn_qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);\r
 124         g_QglTable.m_pfn_qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);\r
 125 \r
 126         g_QglTable.m_pfn_qglPolygonMode(GL_FRONT,GL_FILL);\r
 127         // TODO, just so we can tell if we end up going the wrong way\r
 128         // g_QglTable.m_pfn_qglPolygonMode(GL_BACK,GL_LINE);\r
 129         // TODO any other state we should not assume ?\r
 130 \r
 131         g_QglTable.m_pfn_qglBindTexture(GL_TEXTURE_2D, m_tex->texture_number);\r
 132         g_QglTable.m_pfn_qglBegin(GL_QUADS);\r
 133 \r
 134         g_QglTable.m_pfn_qglColor4f(1.0,1.0,1.0,m_alpha);\r
 135         g_QglTable.m_pfn_qglTexCoord2f(0.0,1.0);\r
 136         g_QglTable.m_pfn_qglVertex2f(m_xmin,m_ymin);\r
 137 \r
 138         g_QglTable.m_pfn_qglTexCoord2f(1.0,1.0);\r
 139         g_QglTable.m_pfn_qglVertex2f(m_xmax,m_ymin);\r
 140 \r
 141         g_QglTable.m_pfn_qglTexCoord2f(1.0,0.0);\r
 142         g_QglTable.m_pfn_qglVertex2f(m_xmax,m_ymax);\r
 143 \r
 144         g_QglTable.m_pfn_qglTexCoord2f(0.0,0.0);\r
 145         g_QglTable.m_pfn_qglVertex2f(m_xmin,m_ymax);\r
 146 \r
 147         g_QglTable.m_pfn_qglEnd();\r
 148         g_QglTable.m_pfn_qglBindTexture(GL_TEXTURE_2D, 0);\r
 149 \r
 150         g_QglTable.m_pfn_qglPopAttrib();\r
 151 }\r
 152 \r
 153 bool CBackgroundImage::Load(const char *filename)\r
 154 {\r
 155         qtexture_t *newtex;\r
 156         \r
 157         unsigned char *image = NULL; // gets allocated with what ? g_malloc\r
 158         int width = 0, height = 0;\r
 159 \r
 160         g_FuncTable.m_pfnLoadImage(filename,&image,&width,&height);\r
 161 \r
 162         if(!image) {\r
 163                 Syn_Printf(MSG_WARN "load %s failed\n",filename);\r
 164                 return false;\r
 165         }\r
 166 \r
 167 // just in case we want to build for an old version\r
 168 // http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=900\r
 169 #ifdef BKGRND2D_JPG_WORKAROUND\r
 170         if ( strlen(filename) > 4 && !strcmp(".jpg",filename + strlen(filename) - 4)) {\r
 171                 Syn_Printf(MSG_PREFIX ".jpg workaround, clearing alpha channel\n");\r
 172                 int size = width*height*4;\r
 173                 int i;\r
 174                 for (i = 3; i < size; i+=4) {\r
 175                         image[i] = 255;\r
 176                 }\r
 177         }\r
 178 #endif\r
 179         \r
 180         //TODO bug for stored texture size\r
 181         //TODO whose gl context are we in, anyway ?\r
 182         newtex = g_FuncTable.m_pfnLoadTextureRGBA(image,width,height);\r
 183 \r
 184         g_free(image);\r
 185 \r
 186         if(!newtex) {\r
 187                 Syn_Printf(MSG_WARN "image to texture failed\n");\r
 188                 return false;\r
 189         }\r
 190 \r
 191         Cleanup();\r
 192         m_tex = newtex;\r
 193 \r
 194         g_FuncTable.m_pfnSysUpdateWindows(W_XY);\r
 195 \r
 196         return true;\r
 197 }\r
 198 \r
 199 bool CBackgroundImage::SetExtentsMM()\r
 200 {\r
 201         entity_s *worldentity;\r
 202         const char *val;\r
 203         int xmin = 0, ymin = 0, xmax = 0, ymax = 0;\r
 204 \r
 205         worldentity = (entity_s *)g_FuncTable.m_pfnGetEntityHandle(0);\r
 206         if(!worldentity) {\r
 207                 Syn_Printf(MSG_WARN "SetExtentsMM worldspawn not found\n");\r
 208                 return false;\r
 209         }\r
 210         //TODO val is not NULL even if key does not exist\r
 211         val = g_EntityTable.m_pfnValueForKey(worldentity,"mapcoordsmins");\r
 212         if(!val || !val[0]) {\r
 213                 Syn_Printf(MSG_WARN "SetExtentsMM mapcoordsmins not found\n");\r
 214                 return false;\r
 215         }\r
 216 // we could be more robust\r
 217 // note contortions due to splashs strange idea of min and max\r
 218         if(sscanf(val, "%d %d",&xmin,&ymax) != 2)\r
 219         {\r
 220                 Syn_Printf(MSG_WARN "SetExtentsMM mapcoordsmins malformed\n");\r
 221                 return false;\r
 222         }\r
 223 \r
 224         val = g_EntityTable.m_pfnValueForKey(worldentity,"mapcoordsmaxs");\r
 225         if(!val || !val[0]) {\r
 226                 Syn_Printf(MSG_WARN "SetExtentsMM mapcoordsmaxs not found\n");\r
 227                 return false;\r
 228         }\r
 229         if(sscanf(val, "%d %d",&xmax,&ymin) != 2)\r
 230         {\r
 231                 Syn_Printf(MSG_WARN "SetExtentsMM mapcoordsmaxs malformed\n");\r
 232                 return false;\r
 233         }\r
 234         //might do sanity check before we commit\r
 235         m_xmin = (float)xmin;\r
 236         m_ymin = (float)ymin;\r
 237         m_xmax = (float)xmax;\r
 238         m_ymax = (float)ymax;\r
 239 \r
 240         g_FuncTable.m_pfnSysUpdateWindows(W_XY);\r
 241         return true;\r
 242 }\r
 243 \r
 244 // TODO, this should just be exported from core\r
 245 // ripped directly from radiant/select.cpp:Select_GetBounds\r
 246 //\r
 247 static bool get_selection_bounds (vec3_t mins, vec3_t maxs)\r
 248 {\r
 249         brush_t *b;\r
 250         int             i;\r
 251         brush_t *selected_brushes = g_DataTable.m_pfnSelectedBrushes();\r
 252         //TODO should never happen\r
 253         if(!selected_brushes) {\r
 254           Sys_Printf (MSG_PREFIX "selected_brushes = NULL\n"); \r
 255           return false;\r
 256         }\r
 257         // this should mean no selection\r
 258         if(selected_brushes == selected_brushes->next) {\r
 259           Sys_Printf (MSG_PREFIX "nothing selected\n"); \r
 260 \r
 261           return false;\r
 262         }\r
 263 \r
 264         for (i=0 ; i<3 ; i++)\r
 265         {\r
 266                 mins[i] = 99999;\r
 267                 maxs[i] = -99999;\r
 268         }\r
 269 \r
 270         for (b=selected_brushes->next ; b != selected_brushes ; b=b->next)\r
 271         {\r
 272                 if (b->owner->eclass->fixedsize)\r
 273                 {\r
 274                         for (i=0 ; i<3 ; i++)\r
 275                         {\r
 276                                 if (b->owner->origin[i] < mins[i])\r
 277                                         mins[i] = b->owner->origin[i];\r
 278                                 if (b->owner->origin[i] > maxs[i])\r
 279                                         maxs[i] = b->owner->origin[i];\r
 280                         }\r
 281                 }\r
 282                 else\r
 283                 {\r
 284                         for (i=0 ; i<3 ; i++)\r
 285                         {\r
 286                                 if (b->mins[i] < mins[i])\r
 287                                         mins[i] = b->mins[i];\r
 288                                 if (b->maxs[i] > maxs[i])\r
 289                                         maxs[i] = b->maxs[i];\r
 290                         }\r
 291                 }\r
 292         }\r
 293   return true;\r
 294 }\r
 295 \r
 296 bool CBackgroundImage::SetExtentsSel()\r
 297 {\r
 298         vec3_t mins,maxs;\r
 299 \r
 300         if(!get_selection_bounds(mins,maxs)) \r
 301                 return false;\r
 302 \r
 303         if(((int)mins[m_ix] == (int)maxs[m_ix]) ||\r
 304      ((int)mins[m_iy] == (int)maxs[m_iy])) {\r
 305                 Syn_Printf(MSG_PREFIX "tiny selection\n");\r
 306                 return false;\r
 307         }\r
 308 \r
 309         m_xmin = mins[m_ix];\r
 310         m_ymin = mins[m_iy];\r
 311         m_xmax = maxs[m_ix];\r
 312         m_ymax = maxs[m_iy];\r
 313 \r
 314         g_FuncTable.m_pfnSysUpdateWindows(W_XY);\r
 315 \r
 316   return true;\r
 317 }\r
 318 \r