Paint/Sculpt:

More minor cleanups: fixed names and factored out a function that was
copy-pasted into paint stroke.

source/blender/editors/sculpt_paint/paint_utils.c

@@ -35,6 +35,23 @@
 
 #include "paint_intern.h"
 
+float paint_calc_object_space_radius(ViewContext *vc, float center[3],
+				     float pixel_radius)
+{
+	Object *ob = vc->obact;
+	float delta[3], scale, loc[3];
+
+	mul_v3_m4v3(loc, ob->obmat, center);
+
+	initgrabz(vc->rv3d, loc[0], loc[1], loc[2]);
+	window_to_3d_delta(vc->ar, delta, pixel_radius, 0);
+
+	scale= fabsf(mat4_to_scale(ob->obmat));
+	scale= (scale == 0.0f)? 1.0f: scale;
+
+	return len_v3(delta)/scale;
+}
+
 float paint_get_tex_pixel(Brush* br, float u, float v)
 {
 	TexResult texres;