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#pragma once
#include <basic/defs.hpp>
#include <basic/math.hpp>
#include <vector>
#include <imgui.h>
enum REntityType : int32_t {
REntityType_Rectangle,
REntityType_Bitmap,
};
struct REntity_Rectangle {
REntityType type;
V3F32 pos;
V2F32 dim;
V3F32 color;
};
struct REntity_Bitmap {
REntityType type;
V3F32 pos;
int32_t width;
int32_t height;
void *data;
};
union REntity {
REntityType type;
REntity_Rectangle rect;
REntity_Bitmap bitmap;
};
struct RSortEntry {
RSortEntry(float z, size_t entity_index);
float z;
size_t entity_index;
};
class RenderGroup {
public:
RenderGroup();
void Clear(V3F32 color);
void Reset();
void SetCameraSize(float width, float height);
V2F32 ViewPosToScreenPos(V2F32 view_pos);
V2F32 ViewSizeToScreenSize(V2F32 view_size);
ImVec2 ViewPosToScreenPosImGui(V2F32 view_pos);
ImVec2 ViewSizeToScreenSizeImGui(V2F32 view_size);
float GetScale();
public:
void PushRectangle(V3F32 pos, V2F32 dim, V3F32 color);
void PushBitmap(V3F32 pos, int width, int height, void *bitmap);
private:
void Sort();
public:
int32_t m_ScreenWidth;
int32_t m_ScreenHeight;
private:
friend class GlRenderer;
float m_CameraWidth;
float m_CameraHeight;
V3F32 m_ClearColor;
std::vector<REntity> m_REntities;
std::vector<RSortEntry> m_RSortEntries;
};
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