Function DrawRoom

editor/drawworld.cpp:606–647

Draw a room

//	Draw a room
void DrawRoom(room *rp, int room_color) {
  int fn, vn;
  face *fp;
  int edge_type;

  ResetEdgeList(MAX_EDGES);

  // Rotate all the points
  for (vn = 0; vn < rp->num_verts; vn++)
    g3_RotatePoint((g3Point *)&World_point_buffer[vn], &rp->verts[vn]);

  for (fn = 0, fp = rp->faces; fn < rp->num_faces; fn++, fp++) {
    if (fp->flags & FF_FLOATING_TRIG) {
      for (vn = 0; vn < fp->num_verts; vn++)
        DrawLine(FLOAT_TRIG_COLOR, fp->face_verts[vn], fp->face_verts[(vn + 1) % fp->num_verts]);
      DrawLine(FLOAT_TRIG_COLOR, fp->face_verts[0], fp->face_verts[2]);
      DrawLine(FLOAT_TRIG_COLOR, fp->face_verts[1], fp->face_verts[3]);
    } else if (fp->portal_num == -1) {
      bool facing = g3_CheckNormalFacing(&rp->verts[fp->face_verts[0]], &fp->normal);
      for (vn = 0; vn < fp->num_verts; vn++) {
        if (facing)
          edge_type = ET_NOTFACING;
        else
          edge_type = ET_FACING;

        AddEdge(fp->face_verts[vn], fp->face_verts[(vn + 1) % fp->num_verts], edge_type);
      }
    }
  }

  DrawEdges(room_color);

  // Now draw the terrain portals
  for (int p = 0; p < rp->num_portals; p++) {
    portal *pp = &rp->portals[p];
    if (pp->croom == -1) { // terrain portal
      fp = &rp->faces[pp->portal_face];
      for (vn = 0; vn < fp->num_verts; vn++)
        DrawLine(TERR_PORTAL_COLOR, fp->face_verts[vn], fp->face_verts[(vn + 1) % fp->num_verts]);
    }
  }
}

//	Draw a room rotated and placed in space
void DrawRoomRotated(room *rp, vector *rotpoint, matrix *rotmat, vector *placepoint, int room_color) {