include/rive/shapes/path.hpp

#ifndef _RIVE_PATH_HPP_
#define _RIVE_PATH_HPP_
#include "rive/command_path.hpp"
#include "rive/generated/shapes/path_base.hpp"
#include "rive/math/mat2d.hpp"
#include "rive/math/raw_path.hpp"
#include "rive/shapes/shape_paint_container.hpp"
#include <vector>

namespace rive
{
class Shape;
class PathVertex;

#ifdef ENABLE_QUERY_FLAT_VERTICES
/// Optionally compiled in for tools that need to compute per frame world
/// transformed path vertices. These should not be used at runtime as it's
/// not optimized for performance (it does a lot of memory allocation).

/// A flattened path is composed of only linear
/// and cubic vertices. No corner vertices and it's entirely in world space.
/// This is helpful for getting a close to identical representation of the
/// vertices used to issue the high level path draw commands.
class FlattenedPath
{
private:
    std::vector<PathVertex*> m_Vertices;

public:
    ~FlattenedPath();

    const std::vector<PathVertex*>& vertices() const { return m_Vertices; }
    void addVertex(PathVertex* vertex, const Mat2D& transform);
};
#endif

class Path : public PathBase
{
protected:
    Shape* m_Shape = nullptr;
    std::vector<PathVertex*> m_Vertices;
    bool m_deferredPathDirt = false;
    PathFlags m_pathFlags = PathFlags::none;
    RawPath m_rawPath;

public:
    Shape* shape() const { return m_Shape; }
    StatusCode onAddedClean(CoreContext* context) override;
    void buildDependencies() override;
    virtual const Mat2D& pathTransform() const;
    bool collapse(bool value) override;
    const RawPath& rawPath() const { return m_rawPath; }
    void update(ComponentDirt value) override;

    void addFlags(PathFlags flags);
    bool isFlagged(PathFlags flags) const;

    bool canDeferPathUpdate();
    void addVertex(PathVertex* vertex);

    virtual void markPathDirty(bool sendToLayout = true);
    virtual bool isPathClosed() const { return true; }
    void onDirty(ComponentDirt dirt) override;
    inline bool isHidden() const { return (pathFlags() & 0x1) == 0x1; }
#ifdef ENABLE_QUERY_FLAT_VERTICES
    FlattenedPath* makeFlat(bool transformToParent);
#endif

#ifdef TESTING
    std::vector<PathVertex*>& vertices() { return m_Vertices; }
#endif

    void buildPath(RawPath&) const;
};
} // namespace rive

#endif