[Bf-blender-cvs] [1f30e7c183c] blender-v2.93-release: Fix: missing greasepencil hook modifier relationship lines

[Philipp Oeser]

Commit: 1f30e7c183cd9d5f04579e8c37d236360d0e6c44
Author: Philipp Oeser
Date:   Fri Nov 25 09:43:51 2022 +0100
Branches: blender-v2.93-release
https://developer.blender.org/rB1f30e7c183cd9d5f04579e8c37d236360d0e6c44

Fix: missing greasepencil hook modifier relationship lines

Overlay relationship lines were missing between the object having the
modifier and the target object.

To make this consistent with other objects types, now draw relationship
lines for greasepencil and hooks now, too.

Spotted while looking into T102741.

Maniphest Tasks: T102741

Differential Revision: https://developer.blender.org/D16609

===================================================================

M	source/blender/draw/engines/overlay/overlay_extra.c

===================================================================

diff --git a/source/blender/draw/engines/overlay/overlay_extra.c b/source/blender/draw/engines/overlay/overlay_extra.c
index 7da94b52faa..a4e851f2406 100644
--- a/source/blender/draw/engines/overlay/overlay_extra.c
+++ b/source/blender/draw/engines/overlay/overlay_extra.c
@@ -42,6 +42,7 @@
 #include "DNA_constraint_types.h"
 #include "DNA_curve_types.h"
 #include "DNA_fluid_types.h"
+#include "DNA_gpencil_modifier_types.h"
 #include "DNA_lightprobe_types.h"
 #include "DNA_mesh_types.h"
 #include "DNA_meta_types.h"
@@ -1290,6 +1291,17 @@ static void OVERLAY_relationship_lines(OVERLAY_ExtraCallBuffers *cb,
       OVERLAY_extra_point(cb, center, relation_color);
     }
   }
+  for (GpencilModifierData *md = ob->greasepencil_modifiers.first; md; md = md->next) {
+    if (md->type == eGpencilModifierType_Hook) {
+      HookGpencilModifierData *hmd = (HookGpencilModifierData *)md;
+      float center[3];
+      mul_v3_m4v3(center, ob->obmat, hmd->cent);
+      if (hmd->object) {
+        OVERLAY_extra_line_dashed(cb, hmd->object->obmat[3], center, relation_color);
+      }
+      OVERLAY_extra_point(cb, center, relation_color);
+    }
+  }
 
   if (ob->rigidbody_constraint) {
     Object *rbc_ob1 = ob->rigidbody_constraint->ob1;