while looking into [#27057] noticed when the view and the transform center are 0,0,0 it gives NAN values.

1 files changed, 7 insertions, 1 deletions

diff --git a/source/blender/editors/transform/transform_constraints.c b/source/blender/editors/transform/transform_constraints.c
index 0012334cf92..e5e31a8e319 100644
--- a/source/blender/editors/transform/transform_constraints.c
+++ b/source/blender/editors/transform/transform_constraints.c
@@ -243,7 +243,13 @@ static void axisProjection(TransInfo *t, float axis[3], float in[3], float out[3
 			
 			sub_v3_v3v3(v, i2, v);
 	
-			sub_v3_v3v3(out, i1, t->con.center);
+			sub_v3_v3v3(out, i1,  t->con.center);
+
+			/* possible some values become nan when
+			 * viewpoint and object are both zero */
+			if(!finite(out[0])) out[0]= 0.0f;
+			if(!finite(out[1])) out[1]= 0.0f;
+			if(!finite(out[2])) out[2]= 0.0f;
 		}
 	}
 }