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 <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::unique_ptr<CommandPath> m_CommandPath;
        std::vector<PathVertex*> m_Vertices;

    public:
        Shape* shape() const { return m_Shape; }
        StatusCode onAddedClean(CoreContext* context) override;
        void buildDependencies() override;
        virtual const Mat2D& pathTransform() const;
        CommandPath* commandPath() const { return m_CommandPath.get(); }
        void update(ComponentDirt value) override;

        void addVertex(PathVertex* vertex);

        virtual void markPathDirty();
        virtual bool isPathClosed() const { return true; }
        void onDirty(ComponentDirt dirt) override;
#ifdef ENABLE_QUERY_FLAT_VERTICES
        FlattenedPath* makeFlat(bool transformToParent);
#endif

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

        // pour ourselves into a command-path
        void buildPath(CommandPath&) const;
    };
} // namespace rive

#endif