star-cad

commit 824ff8bfea364942354cbac1a4c71d96fc60136a
parent 632e64b00f456d80a36c384f6334d6a49d5be1a4
Author: Christophe Coustet <christophe.coustet@meso-star.com>
Date:   Tue, 29 Jul 2025 13:52:18 +0200

Add scene_get_count and geometry_is_empty API calls.

Diffstat:
M
src/scad.h
 | 
11
+++++++++++
M
src/scad_geometry.c
 | 
44
++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 55 insertions(+), 0 deletions(-)
diff --git a/src/scad.h b/src/scad.h
@@ -195,6 +195,11 @@ scad_get_options
  * All these calls process the scene (i.e. all the existing geomeries) at once.
  ******************************************************************************/
 
+/* Get the number of geometries in the scene */
+SCAD_API res_T
+scad_scene_count
+  (size_t* count);
+
 /* Clear the scene from all its geometries */
 SCAD_API res_T
 scad_scene_clear
@@ -337,6 +342,12 @@ scad_geometry_get_count
   (const struct scad_geometry* geometry,
    size_t* count);
 
+/* Check if the geometry `geometry' is empty (has count 0). */
+SCAD_API res_T
+scad_geometry_is_empty
+  (const struct scad_geometry* geometry,
+   int* empty);
+
 /* Attach some custom data `data' to geometry `geometry'.
  * If provided, release() is called when `geometry' is released or if
  * set_custom_data is called again. */
diff --git a/src/scad_geometry.c b/src/scad_geometry.c
@@ -471,6 +471,28 @@ error:
 }
 
 res_T
+scad_scene_count
+  (size_t* count)
+{
+  res_T res = RES_OK;
+  struct scad_device* dev = get_device();
+
+  if(!count) {
+    res =RES_BAD_ARG;
+    goto error;
+  }
+
+  ERR(check_device(FUNC_NAME));
+
+  *count = htable_geometries_size_get(&dev->allgeom);
+
+end:
+  return res;
+error:
+  goto end;
+}
+
+res_T
 scad_scene_clear
   (void)
 {
@@ -550,6 +572,28 @@ error:
 }
 
 res_T
+scad_geometry_is_empty
+  (const struct scad_geometry* geom,
+   int* empty)
+{
+  res_T res = RES_OK;
+
+  if(!geom || !empty) {
+    res = RES_BAD_ARG;
+    goto error;
+  }
+
+  ERR(check_device(FUNC_NAME));
+
+  *empty = (geom->gmsh_dimTags_n == 0);
+
+exit:
+  return res;
+error:
+  goto exit;
+}
+
+res_T
 scad_geometry_set_custom_data
   (struct scad_geometry* geom,
    void (*release) (void* data),