tess/include/rive/tess/contour_stroke.hpp

#ifndef _RIVE_CONTOUR_STROKE_HPP_
#define _RIVE_CONTOUR_STROKE_HPP_

#include "rive/renderer.hpp"
#include "rive/math/aabb.hpp"
#include "rive/math/mat2d.hpp"
#include <vector>
#include <cstdint>

namespace rive {
    class SegmentedContour;

    ///
    /// Builds a triangle strip vertex buffer from a SegmentedContour.
    ///
    class ContourStroke {
    protected:
        std::vector<Vec2D> m_TriangleStrip;
        std::vector<std::size_t> m_Offsets;
        uint32_t m_RenderOffset = 0;

    public:
        const std::vector<Vec2D>& triangleStrip() const { return m_TriangleStrip; }

        void reset();
        void resetRenderOffset();
        void nextRenderOffset(std::size_t& start, std::size_t& end);

        void extrude(const SegmentedContour* contour,
                     bool isClosed,
                     StrokeJoin join,
                     StrokeCap cap,
                     float strokeWidth,
                     const Mat2D& transform);
    };
} // namespace rive
#endif