use define for 0.375 = GLA_PIXEL_OFS, used all over the interface.

also use M_SQRT1_2 in math_rotation.c

2 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/editors/screen/area.c b/source/blender/editors/screen/area.c
index 47a086a2779..b4f1f4b3022 100644
--- a/source/blender/editors/screen/area.c
+++ b/source/blender/editors/screen/area.c
@@ -107,7 +107,7 @@ void ED_region_pixelspace(ARegion *ar)
 	int width = ar->winrct.xmax - ar->winrct.xmin + 1;
 	int height = ar->winrct.ymax - ar->winrct.ymin + 1;
 	
-	wmOrtho2(-0.375f, (float)width - 0.375f, -0.375f, (float)height - 0.375f);
+	wmOrtho2(-GLA_PIXEL_OFS, (float)width - GLA_PIXEL_OFS, -GLA_PIXEL_OFS, (float)height - GLA_PIXEL_OFS);
 	glLoadIdentity();
 }
 
diff --git a/source/blender/editors/screen/glutil.c b/source/blender/editors/screen/glutil.c
index 5296c8615ab..a534124d2c0 100644
--- a/source/blender/editors/screen/glutil.c
+++ b/source/blender/editors/screen/glutil.c
@@ -674,7 +674,7 @@ void glaDefine2DArea(rcti *screen_rect)
 	glViewport(screen_rect->xmin, screen_rect->ymin, sc_w, sc_h);
 	glScissor(screen_rect->xmin, screen_rect->ymin, sc_w, sc_h);
 
-	/* The 0.375 magic number is to shift the matrix so that
+	/* The GLA_PIXEL_OFS magic number is to shift the matrix so that
 	 * both raster and vertex integer coordinates fall at pixel
 	 * centers properly. For a longer discussion see the OpenGL
 	 * Programming Guide, Appendix H, Correctness Tips.
@@ -683,7 +683,7 @@ void glaDefine2DArea(rcti *screen_rect)
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
 	glOrtho(0.0, sc_w, 0.0, sc_h, -1, 1);
-	glTranslatef(0.375, 0.375, 0.0);
+	glTranslatef(GLA_PIXEL_OFS, GLA_PIXEL_OFS, 0.0);
 
 	glMatrixMode(GL_MODELVIEW);
 	glLoadIdentity();