mirror of
https://github.com/UberGames/ioef.git
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282 lines
8.8 KiB
C
Executable file
282 lines
8.8 KiB
C
Executable file
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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#include "qbsp.h"
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#include "../botlib/aasfile.h"
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#include "aas_create.h"
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//===========================================================================
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//
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// Parameter: -
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// Returns: -
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// Changes Globals: -
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//===========================================================================
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int AAS_TryMergeFaces(tmp_face_t *face1, tmp_face_t *face2)
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{
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winding_t *neww;
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#ifdef DEBUG
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if (!face1->winding) Error("face1 %d without winding", face1->num);
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if (!face2->winding) Error("face2 %d without winding", face2->num);
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#endif //DEBUG
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//
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if (face1->faceflags != face2->faceflags) return false;
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//NOTE: if the front or back area is zero this doesn't mean there's
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//a real area. It means there's solid at that side of the face
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//if both faces have the same front area
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if (face1->frontarea == face2->frontarea)
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{
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//if both faces have the same back area
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if (face1->backarea == face2->backarea)
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{
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//if the faces are in the same plane
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if (face1->planenum == face2->planenum)
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{
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//if they have both a front and a back area (no solid on either side)
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if (face1->frontarea && face1->backarea)
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{
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neww = MergeWindings(face1->winding, face2->winding,
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mapplanes[face1->planenum].normal);
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} //end if
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else
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{
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//this function is to be found in l_poly.c
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neww = TryMergeWinding(face1->winding, face2->winding,
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mapplanes[face1->planenum].normal);
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} //end else
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if (neww)
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{
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FreeWinding(face1->winding);
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face1->winding = neww;
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if (face2->frontarea) AAS_RemoveFaceFromArea(face2, face2->frontarea);
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if (face2->backarea) AAS_RemoveFaceFromArea(face2, face2->backarea);
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AAS_FreeTmpFace(face2);
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return true;
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} //end if
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} //end if
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else if ((face1->planenum & ~1) == (face2->planenum & ~1))
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{
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Log_Write("face %d and %d, same front and back area but flipped planes\r\n",
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face1->num, face2->num);
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} //end if
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} //end if
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} //end if
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return false;
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} //end of the function AAS_TryMergeFaces
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/*
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int AAS_TryMergeFaces(tmp_face_t *face1, tmp_face_t *face2)
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{
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winding_t *neww;
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#ifdef DEBUG
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if (!face1->winding) Error("face1 %d without winding", face1->num);
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if (!face2->winding) Error("face2 %d without winding", face2->num);
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#endif //DEBUG
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//if the faces are in the same plane
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if ((face1->planenum & ~1) != (face2->planenum & ~1)) return false;
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// if (face1->planenum != face2->planenum) return false;
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//NOTE: if the front or back area is zero this doesn't mean there's
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//a real area. It means there's solid at that side of the face
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//if both faces have the same front area
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if (face1->frontarea != face2->frontarea ||
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face1->backarea != face2->backarea)
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{
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if (!face1->frontarea || !face1->backarea ||
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!face2->frontarea || !face2->backarea) return false;
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else if (face1->frontarea != face2->backarea ||
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face1->backarea != face2->frontarea) return false;
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// return false;
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} //end if
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//this function is to be found in l_poly.c
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neww = TryMergeWinding(face1->winding, face2->winding,
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mapplanes[face1->planenum].normal);
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if (!neww) return false;
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//
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FreeWinding(face1->winding);
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face1->winding = neww;
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//remove face2
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if (face2->frontarea)
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AAS_RemoveFaceFromArea(face2, &tmpaasworld.areas[face2->frontarea]);
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if (face2->backarea)
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AAS_RemoveFaceFromArea(face2, &tmpaasworld.areas[face2->backarea]);
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return true;
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} //end of the function AAS_TryMergeFaces*/
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//===========================================================================
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//
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// Parameter: -
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// Returns: -
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// Changes Globals: -
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//===========================================================================
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void AAS_MergeAreaFaces(void)
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{
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int num_facemerges = 0;
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int side1, side2, restart;
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tmp_area_t *tmparea, *lasttmparea;
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tmp_face_t *face1, *face2;
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Log_Write("AAS_MergeAreaFaces\r\n");
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qprintf("%6d face merges", num_facemerges);
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//NOTE: first convex area is a dummy
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lasttmparea = tmpaasworld.areas;
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for (tmparea = tmpaasworld.areas; tmparea; tmparea = tmparea->l_next)
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{
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restart = false;
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//
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if (tmparea->invalid) continue;
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//
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for (face1 = tmparea->tmpfaces; face1; face1 = face1->next[side1])
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{
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side1 = face1->frontarea != tmparea;
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for (face2 = face1->next[side1]; face2; face2 = face2->next[side2])
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{
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side2 = face2->frontarea != tmparea;
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//if succesfully merged
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if (AAS_TryMergeFaces(face1, face2))
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{
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//start over again after merging two faces
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restart = true;
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num_facemerges++;
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qprintf("\r%6d", num_facemerges);
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AAS_CheckArea(tmparea);
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break;
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} //end if
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} //end for
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if (restart)
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{
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tmparea = lasttmparea;
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break;
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} //end if
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} //end for
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lasttmparea = tmparea;
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} //end for
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qprintf("\n");
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Log_Write("%6d face merges\r\n", num_facemerges);
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} //end of the function AAS_MergeAreaFaces
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//===========================================================================
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//
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// Parameter: -
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// Returns: -
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// Changes Globals: -
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//===========================================================================
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void AAS_MergePlaneFaces(tmp_area_t *tmparea, int planenum)
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{
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tmp_face_t *face1, *face2, *nextface2;
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winding_t *neww;
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int side1, side2;
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for (face1 = tmparea->tmpfaces; face1; face1 = face1->next[side1])
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{
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side1 = face1->frontarea != tmparea;
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if (face1->planenum != planenum) continue;
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//
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for (face2 = face1->next[side1]; face2; face2 = nextface2)
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{
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side2 = face2->frontarea != tmparea;
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nextface2 = face2->next[side2];
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//
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if ((face2->planenum & ~1) != (planenum & ~1)) continue;
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//
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neww = MergeWindings(face1->winding, face2->winding,
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mapplanes[face1->planenum].normal);
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FreeWinding(face1->winding);
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face1->winding = neww;
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if (face2->frontarea) AAS_RemoveFaceFromArea(face2, face2->frontarea);
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if (face2->backarea) AAS_RemoveFaceFromArea(face2, face2->backarea);
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AAS_FreeTmpFace(face2);
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//
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nextface2 = face1->next[side1];
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} //end for
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} //end for
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} //end of the function AAS_MergePlaneFaces
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//===========================================================================
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//
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// Parameter: -
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// Returns: -
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// Changes Globals: -
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//===========================================================================
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int AAS_CanMergePlaneFaces(tmp_area_t *tmparea, int planenum)
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{
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tmp_area_t *frontarea, *backarea;
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tmp_face_t *face1;
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int side1, merge, faceflags;
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frontarea = backarea = NULL;
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merge = false;
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for (face1 = tmparea->tmpfaces; face1; face1 = face1->next[side1])
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{
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side1 = face1->frontarea != tmparea;
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if ((face1->planenum & ~1) != (planenum & ~1)) continue;
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if (!frontarea && !backarea)
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{
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frontarea = face1->frontarea;
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backarea = face1->backarea;
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faceflags = face1->faceflags;
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} //end if
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else
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{
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if (frontarea != face1->frontarea) return false;
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if (backarea != face1->backarea) return false;
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if (faceflags != face1->faceflags) return false;
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merge = true;
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} //end else
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} //end for
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return merge;
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} //end of the function AAS_CanMergePlaneFaces
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//===========================================================================
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//
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// Parameter: -
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// Returns: -
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// Changes Globals: -
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//===========================================================================
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void AAS_MergeAreaPlaneFaces(void)
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{
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int num_facemerges = 0;
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int side1;
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tmp_area_t *tmparea, *nexttmparea;
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tmp_face_t *face1;
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Log_Write("AAS_MergePlaneFaces\r\n");
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qprintf("%6d plane face merges", num_facemerges);
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//NOTE: first convex area is a dummy
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for (tmparea = tmpaasworld.areas; tmparea; tmparea = nexttmparea)
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{
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nexttmparea = tmparea->l_next;
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//
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if (tmparea->invalid) continue;
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//
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for (face1 = tmparea->tmpfaces; face1; face1 = face1->next[side1])
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{
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side1 = face1->frontarea != tmparea;
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//
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if (AAS_CanMergePlaneFaces(tmparea, face1->planenum))
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{
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AAS_MergePlaneFaces(tmparea, face1->planenum);
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nexttmparea = tmparea;
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num_facemerges++;
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qprintf("\r%6d", num_facemerges);
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break;
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} //end if
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} //end for
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} //end for
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qprintf("\n");
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Log_Write("%6d plane face merges\r\n", num_facemerges);
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} //end of the function AAS_MergeAreaPlaneFaces
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