Curves: separate sculpt brushes into separate files

This makes it easier to work on these brushes in parallel.

1 files changed, 106 insertions, 0 deletions

diff --git a/source/blender/editors/sculpt_paint/curves_sculpt_delete.cc b/source/blender/editors/sculpt_paint/curves_sculpt_delete.cc
new file mode 100644
index 00000000000..8a87fb729ae
--- /dev/null
+++ b/source/blender/editors/sculpt_paint/curves_sculpt_delete.cc
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <algorithm>
+
+#include "curves_sculpt_intern.hh"
+
+#include "BLI_float4x4.hh"
+#include "BLI_index_mask_ops.hh"
+#include "BLI_kdtree.h"
+#include "BLI_rand.hh"
+#include "BLI_vector.hh"
+
+#include "PIL_time.h"
+
+#include "DEG_depsgraph.h"
+
+#include "BKE_attribute_math.hh"
+#include "BKE_brush.h"
+#include "BKE_bvhutils.h"
+#include "BKE_context.h"
+#include "BKE_curves.hh"
+#include "BKE_mesh.h"
+#include "BKE_mesh_runtime.h"
+#include "BKE_paint.h"
+#include "BKE_spline.hh"
+
+#include "DNA_brush_enums.h"
+#include "DNA_brush_types.h"
+#include "DNA_curves_types.h"
+#include "DNA_mesh_types.h"
+#include "DNA_meshdata_types.h"
+#include "DNA_object_types.h"
+#include "DNA_screen_types.h"
+#include "DNA_space_types.h"
+
+#include "ED_screen.h"
+#include "ED_view3d.h"
+
+namespace blender::ed::sculpt_paint {
+
+using blender::bke::CurvesGeometry;
+
+class DeleteOperation : public CurvesSculptStrokeOperation {
+ private:
+  float2 last_mouse_position_;
+
+ public:
+  void on_stroke_extended(bContext *C, const StrokeExtension &stroke_extension) override
+  {
+    Scene &scene = *CTX_data_scene(C);
+    Object &object = *CTX_data_active_object(C);
+    ARegion *region = CTX_wm_region(C);
+    RegionView3D *rv3d = CTX_wm_region_view3d(C);
+
+    CurvesSculpt &curves_sculpt = *scene.toolsettings->curves_sculpt;
+    Brush &brush = *BKE_paint_brush(&curves_sculpt.paint);
+    const float brush_radius = BKE_brush_size_get(&scene, &brush);
+
+    float4x4 projection;
+    ED_view3d_ob_project_mat_get(rv3d, &object, projection.values);
+
+    Curves &curves_id = *static_cast<Curves *>(object.data);
+    CurvesGeometry &curves = CurvesGeometry::wrap(curves_id.geometry);
+    MutableSpan<float3> positions = curves.positions();
+
+    const float2 mouse_start = stroke_extension.is_first ? stroke_extension.mouse_position :
+                                                           last_mouse_position_;
+    const float2 mouse_end = stroke_extension.mouse_position;
+
+    /* Find indices of curves that have to be removed. */
+    Vector<int64_t> indices;
+    const IndexMask curves_to_remove = index_mask_ops::find_indices_based_on_predicate(
+        curves.curves_range(), 512, indices, [&](const int curve_i) {
+          const IndexRange point_range = curves.range_for_curve(curve_i);
+          for (const int segment_i : IndexRange(point_range.size() - 1)) {
+            const float3 pos1 = positions[point_range[segment_i]];
+            const float3 pos2 = positions[point_range[segment_i + 1]];
+
+            float2 pos1_proj, pos2_proj;
+            ED_view3d_project_float_v2_m4(region, pos1, pos1_proj, projection.values);
+            ED_view3d_project_float_v2_m4(region, pos2, pos2_proj, projection.values);
+
+            const float dist = dist_seg_seg_v2(pos1_proj, pos2_proj, mouse_start, mouse_end);
+            if (dist <= brush_radius) {
+              return true;
+            }
+          }
+          return false;
+        });
+
+    curves.remove_curves(curves_to_remove);
+
+    curves.tag_positions_changed();
+    DEG_id_tag_update(&curves_id.id, ID_RECALC_GEOMETRY);
+    ED_region_tag_redraw(region);
+
+    last_mouse_position_ = stroke_extension.mouse_position;
+  }
+};
+
+std::unique_ptr<CurvesSculptStrokeOperation> new_delete_operation()
+{
+  return std::make_unique<DeleteOperation>();
+}
+
+}  // namespace blender::ed::sculpt_paint