api function added for [#26481] Export to X3D of IndexedFaceSet should use X3D 's DEF USE mechanism

Object.is_modified(scene, 'PREVIEW') function for python exporters to check if any modifiers or shape keys are applied (weather the original mesh can be used for exporters).

2 files changed, 23 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_object.h b/source/blender/blenkernel/BKE_object.h
index 3d32ba5a30a..065810089f1 100644
--- a/source/blender/blenkernel/BKE_object.h
+++ b/source/blender/blenkernel/BKE_object.h
@@ -136,6 +136,8 @@ int object_insert_ptcache(struct Object *ob);
 // void object_delete_ptcache(struct Object *ob, int index);
 struct KeyBlock *object_insert_shape_key(struct Scene *scene, struct Object *ob, const char *name, int from_mix);
 
+int object_is_modified(struct Scene *scene, struct Object *ob);
+
 void object_camera_matrix(
 		struct RenderData *rd, struct Object *camera, int winx, int winy, short field_second,
 		float winmat[][4], struct rctf *viewplane, float *clipsta, float *clipend, float *lens, float *ycor,
diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c
index 25354f2f239..9f2de5be84a 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -3061,3 +3061,24 @@ KeyBlock *object_insert_shape_key(Scene *scene, Object *ob, const char *name, in
 	else									 return NULL;
 }
 
+/* most important if this is modified it should _always_ return True, in certain
+ * cases false positives are hard to avoid (shape keys for eg)
+ */
+int object_is_modified(Scene *scene, Object *ob)
+{
+	int flag= 0;
+
+	if(ob_get_key(ob)) {
+		flag |= eModifierMode_Render | eModifierMode_Render;
+	}
+	else {
+		ModifierData *md;
+		/* cloth */
+		for(md=modifiers_getVirtualModifierList(ob); md && (flag != (eModifierMode_Render | eModifierMode_Realtime)); md=md->next) {
+			if((flag & eModifierMode_Render) == 0	&& modifier_isEnabled(scene, md, eModifierMode_Render))		flag |= eModifierMode_Render;
+			if((flag & eModifierMode_Realtime) == 0	&& modifier_isEnabled(scene, md, eModifierMode_Realtime))	flag |= eModifierMode_Realtime;
+		}
+	}
+
+	return flag;
+}