+static bool proc_mtledit(MetaScene *mscn, MaterialEdit *med, struct ts_node *node)
+{
+ if(strcmp(node->name, "mtledit") != 0) {
+ return false;
+ }
+
+ const char *restr = ".*";
+ struct ts_attr *amtl = ts_get_attr(node, "material");
+ if(amtl && amtl->val.type == TS_STRING) {
+ restr = amtl->val.str;
+ }
+
+ med->name_re = std::regex(restr);
+
+ node = node->child_list;
+ while(node) {
+ struct ts_node *cn = node;
+ node = node->next;
+
+ if(strcmp(cn->name, "texture") == 0) {
+ // add/change/remove a texture
+ struct ts_attr *atype = ts_get_attr(cn, "type");
+ struct ts_attr *afile = ts_get_attr(cn, "file");
+
+ int textype = MTL_TEX_DIFFUSE;
+ if(atype) {
+ if(atype->val.type == TS_STRING) {
+ textype = mtl_parse_type(atype->val.str);
+ } else if(atype->val.type == TS_NUMBER) {
+ textype = atype->val.inum;
+ if(textype < 0 || textype >= NUM_MTL_TEXTURES) {
+ error_log("invalid texture in mtledit: %d\n", textype);
+ continue;
+ }
+ } else {
+ error_log("unexpected texture type in mtledit: %s\n", atype->val.str);
+ continue;
+ }
+ }
+
+ med->attr = textype;
+
+ if(!afile || !afile->val.str || !*afile->val.str) {
+ // remove
+ med->tex = 0;
+ } else {
+ med->tex = texman.get_texture(afile->val.str, TEX_2D, &mscn->datamap);
+ }
+ }
+ // TODO add more edit modes
+ }
+
+ return true;
+}
+
+static void apply_mtledit(Scene *scn, const MaterialEdit &med)
+{
+ // search all the objects to find matching material names
+ int nobj = scn->objects.size();
+ for(int i=0; i<nobj; i++) {
+ Object *obj = scn->objects[i];
+ if(std::regex_match(obj->mtl.name, med.name_re)) {
+ apply_mtledit(&obj->mtl, med);
+ }
+ }
+}
+
+static void apply_mtledit(Material *mtl, const MaterialEdit &med)
+{
+ // TODO more edit modes...
+ if(med.tex) {
+ mtl->add_texture(med.tex, med.attr);
+ } else {
+ Texture *tex = mtl->stdtex[med.attr];
+ if(tex) {
+ mtl->remove_texture(tex);
+ }
+ }
+}
+