Function CopySqueezeDataForRooms

editor/editor_lighting.cpp:171–231

}

void CopySqueezeDataForRooms(int roomnum, int facenum, uint16_t *dest_data, int dest_x, int dest_y) {
  room *rp = &Rooms[roomnum];
  lightmap_info *lmi_ptr = &LightmapInfo[rp->faces[facenum].lmi_handle];
  uint16_t *src_data = (uint16_t *)lm_data(lmi_ptr->lm_handle);

  int w = lmi_ptr->width;
  int h = lmi_ptr->height;

  // Copy over the actual lightmap data
  CopySqueezeBodyAndEdges(dest_data, src_data, w, h, dest_x, dest_y);

  // Now alter all face uvs that have this lightmap info
  float dest_u = (float)(dest_x + 1) / 128.0;
  float dest_v = (float)(dest_y + 1) / 128.0;

  float u_scalar = (float)w / 128.0;
  float v_scalar = (float)h / 128.0;

  for (int t = roomnum; t <= Highest_room_index; t++) {
    room *this_rp = &Rooms[t];
    if (!this_rp->used)
      continue;

    for (int j = 0; j < this_rp->num_faces; j++) {

      if (!(this_rp->faces[j].flags & FF_LIGHTMAP))
        continue;

      if (this_rp->faces[j].lmi_handle == BAD_LMI_INDEX)
        continue;

      if (Lmi_spoken_for[this_rp->faces[j].lmi_handle])
        continue;
      if (this_rp->faces[j].lmi_handle == rp->faces[facenum].lmi_handle) {
        lmi_ptr->x1 = dest_x + 1;
        lmi_ptr->y1 = dest_y + 1;

        // We have to alter our uvs for this face to reflect our change
        face *fp = &this_rp->faces[j];
        for (int k = 0; k < fp->num_verts; k++) {
          fp->face_uvls[k].u2 *= u_scalar;
          fp->face_uvls[k].u2 += dest_u;

          fp->face_uvls[k].v2 *= v_scalar;
          fp->face_uvls[k].v2 += dest_v;
        }
      }
    }
  }

  ASSERT(rp->faces[facenum].lmi_handle != BAD_LMI_INDEX);

  Lmi_spoken_for[rp->faces[facenum].lmi_handle] = 1;

  // Free our old lightmap
  GameLightmaps[lmi_ptr->lm_handle].used = 1;
  lm_FreeLightmap(lmi_ptr->lm_handle);