Function CopySqueezeDataForObject

editor/editor_lighting.cpp:233–298

}

void CopySqueezeDataForObject(object *obj, int subnum, int facenum, uint16_t *dest_data, int dest_x, int dest_y) {
  lightmap_object_face *fp = &obj->lm_object.lightmap_faces[subnum][facenum];
  lightmap_info *lmi_ptr = &LightmapInfo[fp->lmi_handle];
  uint16_t *src_data = (uint16_t *)lm_data(lmi_ptr->lm_handle);
  int t, k;

  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 objnum = obj - Objects; objnum != -1; objnum = Objects[objnum].next) {
    object *this_obj = &Objects[objnum];

    if (this_obj->lighting_render_type != LRT_LIGHTMAPS)
      continue;
    if (!this_obj->lm_object.used)
      continue;

    for (t = 0; t < this_obj->lm_object.num_models; t++) {
      if (IsNonRenderableSubmodel(&Poly_models[this_obj->rtype.pobj_info.model_num], t))
        continue;

      for (k = 0; k < this_obj->lm_object.num_faces[t]; k++) {
        lightmap_object_face *this_fp = &this_obj->lm_object.lightmap_faces[t][k];
        int lmi_handle = this_fp->lmi_handle;
        if (lmi_handle == BAD_LMI_INDEX)
          continue;
        if (Lmi_spoken_for[lmi_handle])
          continue;

        if (lmi_handle == fp->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
          for (int j = 0; j < this_fp->num_verts; j++) {
            this_fp->u2[j] *= u_scalar;
            this_fp->u2[j] += dest_u;

            this_fp->v2[j] *= v_scalar;
            this_fp->v2[j] += dest_v;
          }
        }
      }
    }
  }

  ASSERT(fp->lmi_handle != BAD_LMI_INDEX);
  Lmi_spoken_for[fp->lmi_handle] = 1;