BlenderStrokeRenderer.h

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "BLI_map.hh"
 
#include "../stroke/StrokeRenderer.h"
#include "../system/FreestyleConfig.h"
 
extern "C" {
struct Depsgraph;
struct GHash;
struct Main;
struct Material;
struct Object;
struct Render;
struct Scene;
struct bContext;
struct bNodeTree;
}
 
namespace Freestyle {
 
class BlenderStrokeRenderer : public StrokeRenderer {
 public:
  BlenderStrokeRenderer(Render *re, int render_count);
  virtual ~BlenderStrokeRenderer();
 
  virtual void RenderStrokeRep(StrokeRep *iStrokeRep) const;
  virtual void RenderStrokeRepBasic(StrokeRep *iStrokeRep) const;
 
  Object *NewMesh() const;
 
  struct StrokeGroup {
    explicit StrokeGroup() : totvert(0), totedge(0), faces_num(0), totloop(0) {}
    vector<StrokeRep *> strokes;
    blender::Map<Material *, int> materials;
    int totvert;
    int totedge;
    int faces_num;
    int totloop;
  };
  vector<StrokeGroup *> strokeGroups, texturedStrokeGroups;
 
  int GenerateScene();
  void GenerateStrokeMesh(StrokeGroup *group, bool hasTex);
  void FreeStrokeGroups();
 
  Render *RenderScene(Render *re, bool render);
 
  static Material *GetStrokeShader(Main *bmain, bNodeTree *iNodeTree, bool do_id_user);
 
 protected:
  Main *freestyle_bmain;
  Scene *old_scene;
  Scene *freestyle_scene;
  Depsgraph *freestyle_depsgraph;
  bContext *_context;
  float _width, _height;
  float _z, _z_delta;
  uint _mesh_id;
  bool _use_shading_nodes;
  struct GHash *_nodetree_hash;
 
  static const char *uvNames[];
 
  int get_stroke_count() const;
  float get_stroke_vertex_z(void) const;
  uint get_stroke_mesh_id(void) const;
  bool test_triangle_visibility(StrokeVertexRep *svRep[3]) const;
  void test_strip_visibility(Strip::vertex_container &strip_vertices,
                             int *visible_faces,
                             int *visible_segments) const;
 
  vector<StrokeRep *> _strokeReps;
 
#ifdef WITH_CXX_GUARDEDALLOC
  MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:BlenderStrokeRenderer")
#endif
};
 
} /* namespace Freestyle */