Sculpt: Scale Cloth Filter

This filter scales the mesh as it was a softbody, producing folds in the
surface. The orientation of the folds can be controlled using the filter
axis and orientation.

This is an example of a cloth filter that uses deform coordinates instead
of forces, but probably it does not make much sense to expose it to the
user in a different way and with different parameters. I'll remove
FilterCache->enabled_force_axis in a later commit and use always
enabled_axis in SCULPT_filter_zero_disabled_axis_components
for both forces and deformation filters, so this function can also be used
in the mesh filter.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D8661

1 files changed, 3 insertions, 1 deletions

diff --git a/source/blender/editors/sculpt_paint/sculpt_intern.h b/source/blender/editors/sculpt_paint/sculpt_intern.h
index 620033422b2..53641dae447 100644
--- a/source/blender/editors/sculpt_paint/sculpt_intern.h
+++ b/source/blender/editors/sculpt_paint/sculpt_intern.h
@@ -366,7 +366,8 @@ struct SculptClothSimulation *SCULPT_cloth_brush_simulation_create(struct Sculpt
                                                                    struct Brush *brush,
                                                                    const float cloth_mass,
                                                                    const float cloth_damping,
-                                                                   const bool use_collisions);
+                                                                   const bool use_collisions,
+                                                                   const bool needs_deform_coords);
 void SCULPT_cloth_brush_simulation_init(struct SculptSession *ss,
                                         struct SculptClothSimulation *cloth_sim);
 void SCULPT_cloth_brush_store_simulation_state(struct SculptSession *ss,
@@ -971,6 +972,7 @@ typedef enum SculptFilterOrientation {
 
 void SCULPT_filter_to_orientation_space(float r_v[3], struct FilterCache *filter_cache);
 void SCULPT_filter_to_object_space(float r_v[3], struct FilterCache *filter_cache);
+void SCULPT_filter_zero_disabled_axis_components(float r_v[3], struct FilterCache *filter_cache);
 
 typedef struct FilterCache {
   bool enabled_axis[3];