Sculpt: Fix projection artifacts by changing the voxel remesh isovalue

This should fix most of the shrinkwrap artifacts when the preserve volume option is active. After this commit the default voxel remehser settings should not fail in the default cube.

Reviewed By: zeddb

Differential Revision: https://developer.blender.org/D6010

1 files changed, 6 insertions, 1 deletions

diff --git a/source/blender/editors/object/object_remesh.c b/source/blender/editors/object/object_remesh.c
index a395a7013fe..35762c5861e 100644
--- a/source/blender/editors/object/object_remesh.c
+++ b/source/blender/editors/object/object_remesh.c
@@ -117,8 +117,13 @@ static int voxel_remesh_exec(bContext *C, wmOperator *op)
     ED_sculpt_undo_geometry_begin(ob);
   }
 
+  float isovalue = 0.0f;
+  if (mesh->flag & ME_REMESH_REPROJECT_VOLUME) {
+    isovalue = mesh->remesh_voxel_size * 0.3f;
+  }
+
   new_mesh = BKE_mesh_remesh_voxel_to_mesh_nomain(
-      mesh, mesh->remesh_voxel_size, mesh->remesh_voxel_adaptivity);
+      mesh, mesh->remesh_voxel_size, mesh->remesh_voxel_adaptivity, isovalue);
 
   if (!new_mesh) {
     return OPERATOR_CANCELLED;