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.

1 files changed, 12 insertions, 2 deletions

diff --git a/source/blender/makesdna/DNA_curve_types.h b/source/blender/makesdna/DNA_curve_types.h
index 8cf9fbbaf40..fe601eefa32 100644
--- a/source/blender/makesdna/DNA_curve_types.h
+++ b/source/blender/makesdna/DNA_curve_types.h
@@ -145,7 +145,7 @@ typedef struct Curve {
 	
 	struct BoundBox *bb;
 	
-	ListBase nurb;		/* actual data */
+	ListBase nurb;		/* actual data, called splines in rna */
 	ListBase disp;
 	
 	ListBase *editnurb;	/* edited data, not in file, use pointer so we can check for it */
@@ -163,7 +163,9 @@ typedef struct Curve {
 	float size[3];
 	float rot[3];
 
-	int texflag;
+	int texflag; /* keep an int because of give_obdata_texspace() */
+
+	short drawflag, pad[3];
 
 	short pathlen, totcol;
 	short flag, bevresol;
@@ -211,6 +213,10 @@ typedef struct Curve {
 /* texflag */
 #define CU_AUTOSPACE	1
 
+/* drawflag */
+#define CU_HIDE_HANDLES	(1 << 0)
+#define CU_HIDE_NORMALS	(1 << 1)
+
 /* flag */
 #define CU_3D			1
 #define CU_FRONT		2
@@ -289,6 +295,10 @@ typedef enum eBezTriple_KeyframeType {
 	BEZT_KEYTYPE_BREAKDOWN,		/* 'breakdown' keyframe */
 } eBezTriple_KeyframeType;
 
+/* checks if the given BezTriple is selected */
+#define BEZSELECTED(bezt) (((bezt)->f2 & SELECT) || ((bezt)->f1 & SELECT) || ((bezt)->f3 & SELECT))
+#define BEZSELECTED_HIDDENHANDLES(cu, bezt)   (((cu)->drawflag & CU_HIDE_HANDLES) ? (bezt)->f2 & SELECT : BEZSELECTED(bezt))
+
 /* *************** CHARINFO **************** */
 
 /* flag */