+Lava *create_lava_from_rect_layer(const RectLayer *rect_layer)
+{
+ Lt *lt = create_lt();
+
+ Lava *lava = PUSH_LT(lt, nth_calloc(1, sizeof(Lava)), free);
+ if (lava == NULL) {
+ RETURN_LT(lt, NULL);
+ }
+ lava->lt = lt;
+
+ lava->rects_count = rect_layer_count(rect_layer);
+ lava->rects = PUSH_LT(lt, nth_calloc(lava->rects_count, sizeof(Wavy_rect*)), free);
+ if (lava->rects == NULL) {
+ RETURN_LT(lt, NULL);
+ }
+
+ const Rect *rects = rect_layer_rects(rect_layer);
+ const Color *colors = rect_layer_colors(rect_layer);
+ for (size_t i = 0; i < lava->rects_count; ++i) {
+ lava->rects[i] = PUSH_LT(lt, create_wavy_rect(rects[i], colors[i]), destroy_wavy_rect);
+ if (lava->rects[i] == NULL) {
+ RETURN_LT(lt, NULL);
+ }
+ }
+
+ return lava;
+}
+