->Commit of patch #5132: Separate by material

This patch adds a new option to the separate menu in editmode, 'By Material'.
It simply loops through all materials in the mesh selects the faces associated
with them and calls separate().

Thanks to Andrea Weikert for the patch!

1 files changed, 34 insertions, 1 deletions

diff --git a/source/blender/src/editmesh.c b/source/blender/src/editmesh.c
index a45f413928e..e138631e548 100644
--- a/source/blender/src/editmesh.c
+++ b/source/blender/src/editmesh.c
@@ -1382,7 +1382,7 @@ void separatemenu(void)
 
 	if(G.editMesh->verts.first==NULL) return;
 	   
-	event = pupmenu("Separate %t|Selected%x1|All Loose Parts%x2");
+	event = pupmenu("Separate %t|Selected%x1|All Loose Parts%x2|By Material%x3");
 	
 	if (event==0) return;
 	waitcursor(1);
@@ -1394,10 +1394,43 @@ void separatemenu(void)
 	case 2:	    	    	    
 		separate_mesh_loose();	    	    
 		break;
+	case 3:
+		separate_material();
+		break;
 	}
 	waitcursor(0);
 }
 
+void separate_material(void)
+{
+	EditMesh *em = G.editMesh;
+	unsigned char curr_mat;
+	Mesh *me;
+	
+	me= get_mesh(G.obedit);
+	if(me->key) {
+		error("Can't separate with vertex keys");
+		return;
+	}
+
+	if(G.obedit && em) {
+		if(G.obedit->type == OB_MESH) {
+			for (curr_mat = 1; curr_mat < G.obedit->totcol; ++curr_mat) {
+				/* clear selection, we're going to use that to select material group */
+				EM_clear_flag_all(SELECT);
+				/* select the material */
+				editmesh_select_by_material(curr_mat);
+				/* and now separate */
+				separate_mesh();
+			}
+		}
+	}
+	
+	countall();
+	allqueue(REDRAWVIEW3D, 0);
+	DAG_object_flush_update(G.scene, G.obedit, OB_RECALC_DATA);
+
+}
 
 void separate_mesh(void)
 {