Add real boundbox support to lattice, and update armature one.

* draw lattice boundingboxes in 3dView [if "show_bounds" is used -- an option previously pretty useless for lattices]
* give proper values for lattice objects ".bound_box" in bpy
* give proper values for armature objects ".bound_box" in bpy
* lets users use "Dimensions" [in 3dView Transform panel] on lattices and armatures
* remove redundant calculations in "boundbox_armature()"

Armatures boundingboxes were already drawn in 3dView, if "show_bounds" was used.

Based on report T45735: Lattice's bounding_box doesn't update,
and a comment in code by @campbellbarton ("later we may want to add dimensions for lattice, armature etc too").

Revision: https://developer.blender.org/D1460

1 files changed, 25 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/lattice.c b/source/blender/blenkernel/intern/lattice.c
index 86927609ff6..d3f666e2109 100644
--- a/source/blender/blenkernel/intern/lattice.c
+++ b/source/blender/blenkernel/intern/lattice.c
@@ -61,6 +61,7 @@
 #include "BKE_library.h"
 #include "BKE_main.h"
 #include "BKE_modifier.h"
+#include "BKE_object.h"
 
 #include "BKE_deform.h"
 
@@ -1138,6 +1139,30 @@ void BKE_lattice_center_median(Lattice *lt, float cent[3])
 	mul_v3_fl(cent, 1.0f / (float)numVerts);
 }
 
+static void boundbox_lattice(Object *ob)
+{
+	BoundBox *bb;
+	Lattice *lt;
+	float min[3], max[3];
+
+	if (ob->bb == NULL)
+		ob->bb = MEM_mallocN(sizeof(BoundBox), "Lattice boundbox");
+
+	bb = ob->bb;
+	lt = ob->data;
+
+	INIT_MINMAX(min, max);
+	BKE_lattice_minmax(lt, min, max);
+	BKE_boundbox_init_from_minmax(bb, min, max);
+}
+
+BoundBox *BKE_lattice_boundbox_get(Object *ob)
+{
+	boundbox_lattice(ob);
+
+	return ob->bb;
+}
+
 void BKE_lattice_minmax(Lattice *lt, float min[3], float max[3])
 {
 	int i, numVerts;