Cleaned up new constraint line drawing while grab/rot/scale

- uses callback mechanism to tell main drawing routine what to do
- for that reason it doesn't use frontbuffer drawing anymore
  and it shows up in all 3d windows as well
- it uses the same colors as for the grid axes (I tweaked it a bit,
  this is based at themecolors, and also should work in different
  background and grid color)
- I disabled drawing lines through every object or every vertex.
  The current display method is clear and not distracting
- when in 'local' transform (double press X/Y/Z), it displays a nice
  axis in the center of transform for vertices.
  In object-mode, local transform differs per object, so constraint lines
  and axes are drawn for each individually...

Also:

- fixed an old bug in rotate transform(). Using a constraint for
  rotation (X, Y, Z) didn't work for multiple objects at all!

1 files changed, 0 insertions, 1 deletions

diff --git a/source/blender/include/BSE_view.h b/source/blender/include/BSE_view.h
index 4da0c331318..49a41e26ab1 100644
--- a/source/blender/include/BSE_view.h
+++ b/source/blender/include/BSE_view.h
@@ -50,7 +50,6 @@ void initgrabz(float x, float y, float z);
 void window_to_3d(float *vec, short mx, short my);
 void project_short(float *vec, short *adr);
 void project_short_noclip(float *vec, short *adr);
-void project_short_infiniteline(float *vec, float *dir, short *adr1, short *adr2);	/* clips infinite line to screen border */
 void project_float(float *vec, float *adr);
 int boundbox_clip(float obmat[][4], struct BoundBox *bb);
 void fdrawline(float x1, float y1, float x2, float y2);