code cleanup: move vertex and face picking functions into meshtools.c

1 files changed, 79 insertions, 0 deletions

diff --git a/source/blender/editors/mesh/meshtools.c b/source/blender/editors/mesh/meshtools.c
index 2e75a779fed..87a657c0acd 100644
--- a/source/blender/editors/mesh/meshtools.c
+++ b/source/blender/editors/mesh/meshtools.c
@@ -1146,3 +1146,82 @@ int *mesh_get_x_mirror_faces(Object *ob, BMEditMesh *em)
 	
 	return mirrorfaces;
 }
+
+/* selection, vertex and face */
+/* returns 0 if not found, otherwise 1 */
+
+/**
+ * Face selection in object mode,
+ * currently only weight-paint and vertex-paint use this.
+ *
+ * \return boolean TRUE == Found
+ */
+int ED_mesh_pick_face(bContext *C, Mesh *me, Object *ob, const int mval[2], unsigned int *index, short rect)
+{
+	Scene *scene = CTX_data_scene(C);
+	ViewContext vc;
+	view3d_set_viewcontext(C, &vc);
+
+	if (!me || me->totpoly == 0)
+		return 0;
+
+	makeDerivedMesh(scene, ob, NULL, CD_MASK_BAREMESH, 0);
+
+	// XXX  if (v3d->flag & V3D_INVALID_BACKBUF) {
+// XXX drawview.c!		check_backbuf();
+// XXX		persp(PERSP_VIEW);
+// XXX  }
+
+	if (rect) {
+		/* sample rect to increase changes of selecting, so that when clicking
+		 * on an edge in the backbuf, we can still select a face */
+
+		int dist;
+		*index = view3d_sample_backbuf_rect(&vc, mval, 3, 1, me->totpoly + 1, &dist, 0, NULL, NULL);
+	}
+	else {
+		/* sample only on the exact position */
+		*index = view3d_sample_backbuf(&vc, mval[0], mval[1]);
+	}
+
+	if ((*index) <= 0 || (*index) > (unsigned int)me->totpoly)
+		return 0;
+
+	(*index)--;
+
+	return 1;
+}
+
+/**
+ * Vertex selection in object mode,
+ * currently only weight paint uses this.
+ *
+ * \return boolean TRUE == Found
+ */
+int ED_mesh_pick_vert(bContext *C, Mesh *me, const int mval[2], unsigned int *index, int size)
+{
+	ViewContext vc;
+	view3d_set_viewcontext(C, &vc);
+
+	if (!me || me->totvert == 0)
+		return 0;
+
+	if (size > 0) {
+		/* sample rect to increase changes of selecting, so that when clicking
+		 * on an face in the backbuf, we can still select a vert */
+
+		int dist;
+		*index = view3d_sample_backbuf_rect(&vc, mval, size, 1, me->totvert + 1, &dist, 0, NULL, NULL);
+	}
+	else {
+		/* sample only on the exact position */
+		*index = view3d_sample_backbuf(&vc, mval[0], mval[1]);
+	}
+
+	if ((*index) <= 0 || (*index) > (unsigned int)me->totvert)
+		return 0;
+
+	(*index)--;
+
+	return 1;
+}