Batcher.h

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#pragma once
#include "common/Export.h"
 
 
#include "graphics/Canvas.h"
#include <vector>
#include <glm/glm.hpp>
 
namespace eve::graphics {
 
class Texture;
 
struct BatchVertex {
    glm::vec2 pos;
    glm::vec4 color;
    glm::vec2 uv;
};
 
class EVENGINE_API_BACKENDS Batcher {
public:
    void clear();
    void addRect(float x, float y, float w, float h, const Color &color);
    void addTriangle(glm::vec2 a, glm::vec2 b, glm::vec2 c, const Color &color);
    void addTriangle(glm::vec2 a, glm::vec2 b, glm::vec2 c, const Color &colorA, const Color &colorB,
                     const Color &colorC);
    void addRectRotated(float cx, float cy, float w, float h, float degrees, const Color &color);
    void addTexturedRect(float x, float y, float w, float h, const Color &color,
                         float u0, float v0, float u1, float v1,
                         bool rotatedUV = false);
    void addTexturedRectRotated(float cx, float cy, float w, float h, float degrees,
                                const Color &color, float u0, float v0, float u1, float v1,
                                bool rotatedUV = false);
    const std::vector<BatchVertex> &vertices() const { return verts; }
    bool empty() const { return verts.empty(); }
 
    void toNDC(int logicalW, int logicalH);
 
private:
    std::vector<BatchVertex> verts;
};
 
}  // namespace eve::graphics