Helpline drawing in transform (semi broken in this commit)

This is only usefull for rotate now, but the axis constraining code has a part that depended on this, so I commit this part first.

For coders:

void constline(float *center, float *dir, int col)
	Draw an infinite line on the screen. col is the color argument. It must be cpack compatible

void project_short_infiniteline(float *vec, float *dir, short *adr1, short *adr2);
	clips infinite line to screen border

1 files changed, 1 insertions, 0 deletions

diff --git a/source/blender/include/BSE_view.h b/source/blender/include/BSE_view.h
index 49a41e26ab1..4da0c331318 100644
--- a/source/blender/include/BSE_view.h
+++ b/source/blender/include/BSE_view.h
@@ -50,6 +50,7 @@ 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);