Curves: initial brush system integration for curves sculpt mode

This adds the boilerplate code that is necessary to use the tool/brush/paint
systems in the new sculpt curves mode.

Two temporary dummy tools are part of this patch. They do nothing and
only serve to test the boilerplate. When the first actual tool is added,
those dummy tools will be removed.

Differential Revision: https://developer.blender.org/D14117

1 files changed, 26 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/scene.c b/source/blender/blenkernel/intern/scene.c
index 7827c40e2c2..2eb4497aa0e 100644
--- a/source/blender/blenkernel/intern/scene.c
+++ b/source/blender/blenkernel/intern/scene.c
@@ -718,6 +718,16 @@ static void scene_foreach_toolsettings(LibraryForeachIDData *data,
                             reader,
                             &toolsett_old->gp_weightpaint->paint));
   }
+  if (toolsett->curves_sculpt) {
+    BKE_LIB_FOREACHID_UNDO_PRESERVE_PROCESS_FUNCTION_CALL(
+        data,
+        do_undo_restore,
+        scene_foreach_paint(data,
+                            &toolsett->curves_sculpt->paint,
+                            do_undo_restore,
+                            reader,
+                            &toolsett_old->curves_sculpt->paint));
+  }
 
   BKE_LIB_FOREACHID_UNDO_PRESERVE_PROCESS_IDSUPER(data,
                                                   toolsett->gp_sculpt.guide.reference_object,
@@ -972,6 +982,10 @@ static void scene_blend_write(BlendWriter *writer, ID *id, const void *id_addres
     BLO_write_struct(writer, GpWeightPaint, tos->gp_weightpaint);
     BKE_paint_blend_write(writer, &tos->gp_weightpaint->paint);
   }
+  if (tos->curves_sculpt) {
+    BLO_write_struct(writer, CurvesSculpt, tos->curves_sculpt);
+    BKE_paint_blend_write(writer, &tos->curves_sculpt->paint);
+  }
   /* write grease-pencil custom ipo curve to file */
   if (tos->gp_interpolate.custom_ipo) {
     BKE_curvemapping_blend_write(writer, tos->gp_interpolate.custom_ipo);
@@ -1148,6 +1162,7 @@ static void scene_blend_read_data(BlendDataReader *reader, ID *id)
     direct_link_paint_helper(reader, sce, (Paint **)&sce->toolsettings->gp_vertexpaint);
     direct_link_paint_helper(reader, sce, (Paint **)&sce->toolsettings->gp_sculptpaint);
     direct_link_paint_helper(reader, sce, (Paint **)&sce->toolsettings->gp_weightpaint);
+    direct_link_paint_helper(reader, sce, (Paint **)&sce->toolsettings->curves_sculpt);
 
     BKE_paint_blend_read_data(reader, sce, &sce->toolsettings->imapaint.paint);
 
@@ -1406,6 +1421,9 @@ static void scene_blend_read_lib(BlendLibReader *reader, ID *id)
   if (sce->toolsettings->gp_weightpaint) {
     BKE_paint_blend_read_lib(reader, sce, &sce->toolsettings->gp_weightpaint->paint);
   }
+  if (sce->toolsettings->curves_sculpt) {
+    BKE_paint_blend_read_lib(reader, sce, &sce->toolsettings->curves_sculpt->paint);
+  }
 
   if (sce->toolsettings->sculpt) {
     BLO_read_id_address(reader, sce->id.lib, &sce->toolsettings->sculpt->gravity_object);
@@ -1726,6 +1744,10 @@ ToolSettings *BKE_toolsettings_copy(ToolSettings *toolsettings, const int flag)
     ts->gp_weightpaint = MEM_dupallocN(ts->gp_weightpaint);
     BKE_paint_copy(&ts->gp_weightpaint->paint, &ts->gp_weightpaint->paint, flag);
   }
+  if (ts->curves_sculpt) {
+    ts->curves_sculpt = MEM_dupallocN(ts->curves_sculpt);
+    BKE_paint_copy(&ts->curves_sculpt->paint, &ts->curves_sculpt->paint, flag);
+  }
 
   BKE_paint_copy(&ts->imapaint.paint, &ts->imapaint.paint, flag);
   ts->particle.paintcursor = NULL;
@@ -1781,6 +1803,10 @@ void BKE_toolsettings_free(ToolSettings *toolsettings)
     BKE_paint_free(&toolsettings->gp_weightpaint->paint);
     MEM_freeN(toolsettings->gp_weightpaint);
   }
+  if (toolsettings->curves_sculpt) {
+    BKE_paint_free(&toolsettings->curves_sculpt->paint);
+    MEM_freeN(toolsettings->curves_sculpt);
+  }
   BKE_paint_free(&toolsettings->imapaint.paint);
 
   /* free Grease Pencil interpolation curve */