[Bf-blender-cvs] [89eef191716] master: Fix T81776: Sculpt line gestures not working with transformed objects

[Pablo Dobarro]

Commit: 89eef191716cb861ae67540dcf7e80a17ac9f31e
Author: Pablo Dobarro
Date:   Sun Oct 18 00:30:13 2020 +0200
Branches: master
https://developer.blender.org/rB89eef191716cb861ae67540dcf7e80a17ac9f31e

Fix T81776: Sculpt line gestures not working with transformed objects

The line gesture plane should be in object space, not in world space.

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M	source/blender/editors/sculpt_paint/paint_mask.c

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diff --git a/source/blender/editors/sculpt_paint/paint_mask.c b/source/blender/editors/sculpt_paint/paint_mask.c
index 4eef43d0d03..ef22766cd0c 100644
--- a/source/blender/editors/sculpt_paint/paint_mask.c
+++ b/source/blender/editors/sculpt_paint/paint_mask.c
@@ -481,7 +481,11 @@ static SculptGestureContext *sculpt_gesture_init_from_line(bContext *C, wmOperat
   if (!sgcontext->vc.rv3d->is_persp) {
     mul_v3_fl(normal, -1.0f);
   }
-  plane_from_point_normal_v3(sgcontext->line.true_plane, plane_points[0], normal);
+  mul_v3_mat3_m4v3(normal, sgcontext->vc.obact->imat, normal);
+  float plane_point_object_space[3];
+  mul_v3_m4v3(plane_point_object_space, sgcontext->vc.obact->imat, plane_points[0]);
+  plane_from_point_normal_v3(sgcontext->line.true_plane, plane_point_object_space, normal);
+
   return sgcontext;
 }