linebatch.h

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#pragma once
 
#include "eu/render/shader.h"
 
namespace eu::render
{
 
struct CompiledCamera;
// struct Lin_rgb; // in base/colors.h

struct LineDrawer
{
    static constexpr int max_lines = 100;
 
    core::ShaderVertexAttributes description;
    core::CompiledShaderVertexAttributes layout;
    ShaderProgram shader;
    Uniform clip_from_view_uni;
    Uniform view_from_world_uni;
    Uniform resolution_uni;
    Uniform dash_size_uni;
    Uniform gap_size_uni;
 
    std::vector<float> data;
    int lines = 0;
    u32 va;
    u32 vb;
    u32 ib;
 
    LineDrawer();
    ~LineDrawer();
 
    LineDrawer(const LineDrawer&) = delete;
    void operator=(const LineDrawer&) = delete;
    LineDrawer(LineDrawer&&) = delete;
    void operator=(LineDrawer&&) = delete;
 
    void set_camera(const CompiledCamera& cc);
    void set_line_to_dash(const v2& resolution, float dash_size, float gap_size);
    void set_line_to_solid();
    void line(const v3& world_from, const v3& world_to, const Lin_rgb& color);
    void submit();
 
    [[nodiscard]] bool is_loaded() const;
};
 
}  //  namespace eu::render