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/* 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 "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.points_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
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