Fix T70310: Difficult to change brush size from big to small

Changing this values should only support horizontal movement as we are no longer trying to match the size of the cursor and the size of the circle preview in the widget.

Reviewed By: brecht

Maniphest Tasks: T70310

Differential Revision: https://developer.blender.org/D5931

1 files changed, 4 insertions, 8 deletions

diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index 285379e90c6..69c535308e6 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -2621,38 +2621,34 @@ static int radial_control_modal(bContext *C, wmOperator *op, const wmEvent *even
             }
             else {
               delta[0] = rc->initial_mouse[0] - rc->slow_mouse[0];
-              delta[1] = rc->initial_mouse[1] - rc->slow_mouse[1];
+              delta[1] = 0.0f;
 
               if (rc->zoom_prop) {
                 RNA_property_float_get_array(&rc->zoom_ptr, rc->zoom_prop, zoom);
                 delta[0] /= zoom[0];
-                delta[1] /= zoom[1];
               }
 
               dist = len_v2(delta);
 
               delta[0] = event->x - rc->slow_mouse[0];
-              delta[1] = event->y - rc->slow_mouse[1];
 
               if (rc->zoom_prop) {
                 delta[0] /= zoom[0];
-                delta[1] /= zoom[1];
               }
 
-              dist = dist + 0.1f * (delta[0] + delta[1]);
+              dist = dist + 0.1f * (delta[0]);
             }
           }
           else {
             delta[0] = rc->initial_mouse[0] - event->x;
-            delta[1] = rc->initial_mouse[1] - event->y;
+            delta[1] = 0.0f;
 
             if (rc->zoom_prop) {
               RNA_property_float_get_array(&rc->zoom_ptr, rc->zoom_prop, zoom);
               delta[0] /= zoom[0];
-              delta[1] /= zoom[1];
             }
 
-            dist = len_v2(delta);
+            dist = clamp_f(-delta[0], 0.0f, FLT_MAX);
           }
 
           /* calculate new value and apply snapping  */