Curve/Surface Editing

- rename "Nurb" to "Spline" in RNA, eg. bpy.data.curves[0].splines[2].type == 'NURBS'
  from a user perspective spline is a more generic term while Nurb is misleading when used for beziers and poly lines.

- added curve.active_spline property so the python UI can display the last selected curve.
  
- set the active spline when entering editmode (uses first selected spline)
  
- added back Hide Handles as a curve property (removed the global flag), access from the view panel in editmode.
  
- added hide normal option for curve, normal size access for curve and mesh display.

- changing orderU/V, endpoints, cyclic, bezierU/V now work in editmode and calls update functions.

- entering editmode was crashing with text objects

- curve.switch_direction() crashed (own fault from last commit)

- Tkey for tilt was overridden by Toolbar, made Tilt Ctrl+T.

- OBJECT_OT_mode_set check for compatible modes before running - so curves dont try go into paint mode with V key for eg.

2 files changed, 10 insertions, 9 deletions

diff --git a/source/blender/editors/transform/transform_conversions.c b/source/blender/editors/transform/transform_conversions.c
index d86eddd0a64..504563b797b 100644
--- a/source/blender/editors/transform/transform_conversions.c
+++ b/source/blender/editors/transform/transform_conversions.c
@@ -1367,7 +1367,8 @@ static void createTransCurveVerts(bContext *C, TransInfo *t)
 	int a;
 	int count=0, countsel=0;
 	int propmode = t->flag & T_PROP_EDIT;
-
+	short hide_handles = (cu->drawflag & CU_HIDE_HANDLES);
+	
 	/* to be sure */
 	if(cu->editnurb==NULL) return;
 
@@ -1376,7 +1377,7 @@ static void createTransCurveVerts(bContext *C, TransInfo *t)
 		if(nu->type == CU_BEZIER) {
 			for(a=0, bezt= nu->bezt; a<nu->pntsu; a++, bezt++) {
 				if(bezt->hide==0) {
-					if (G.f & G_HIDDENHANDLES) {
+					if (hide_handles) {
 						if(bezt->f2 & SELECT) countsel+=3;
 						if(propmode) count+= 3;
 					} else {
@@ -1417,13 +1418,13 @@ static void createTransCurveVerts(bContext *C, TransInfo *t)
 					TransDataCurveHandleFlags *hdata = NULL;
 
 					if(		propmode ||
-							((bezt->f2 & SELECT) && (G.f & G_HIDDENHANDLES)) ||
-							((bezt->f1 & SELECT) && (G.f & G_HIDDENHANDLES)==0)
+							((bezt->f2 & SELECT) && hide_handles) ||
+							((bezt->f1 & SELECT) && hide_handles == 0)
 					  ) {
 						VECCOPY(td->iloc, bezt->vec[0]);
 						td->loc= bezt->vec[0];
 						VECCOPY(td->center, bezt->vec[1]);
-						if (G.f & G_HIDDENHANDLES) {
+						if (hide_handles) {
 							if(bezt->f2 & SELECT) td->flag= TD_SELECTED;
 							else td->flag= 0;
 						} else {
@@ -1478,13 +1479,13 @@ static void createTransCurveVerts(bContext *C, TransInfo *t)
 						tail++;
 					}
 					if(		propmode ||
-							((bezt->f2 & SELECT) && (G.f & G_HIDDENHANDLES)) ||
-							((bezt->f3 & SELECT) && (G.f & G_HIDDENHANDLES)==0)
+							((bezt->f2 & SELECT) && hide_handles) ||
+							((bezt->f3 & SELECT) && hide_handles == 0)
 					  ) {
 						VECCOPY(td->iloc, bezt->vec[2]);
 						td->loc= bezt->vec[2];
 						VECCOPY(td->center, bezt->vec[1]);
-						if (G.f & G_HIDDENHANDLES) {
+						if (hide_handles) {
 							if(bezt->f2 & SELECT) td->flag= TD_SELECTED;
 							else td->flag= 0;
 						} else {
diff --git a/source/blender/editors/transform/transform_manipulator.c b/source/blender/editors/transform/transform_manipulator.c
index 9fa20c2d674..93bc02d7180 100644
--- a/source/blender/editors/transform/transform_manipulator.c
+++ b/source/blender/editors/transform/transform_manipulator.c
@@ -260,7 +260,7 @@ int calc_manipulator_stats(const bContext *C)
 						 * if handles are hidden then only check the center points.
 						 * If 2 or more are selected then only use the center point too.
 						 */
-						if (G.f & G_HIDDENHANDLES) {
+						if (cu->drawflag & CU_HIDE_HANDLES) {
 							if (bezt->f2 & SELECT) {
 								calc_tw_center(scene, bezt->vec[1]);
 								totsel++;