gTexture.h

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/*
* gTexture.h
*
*  Created on: May 10, 2020
*      Author: noyan
*/
 
#pragma once
 
#ifndef ENGINE_GRAPHICS_GTEXTURE_H_
#define ENGINE_GRAPHICS_GTEXTURE_H_
 
#include <string>
#include "gRenderObject.h"
#include "gRect.h"
 
class gTexture : public gRenderObject {
public:
    enum TextureType : int {
        TEXTURETYPE_DIFFUSE = 0,
        TEXTURETYPE_SPECULAR = 1,
        TEXTURETYPE_NORMAL = 2,
        TEXTURETYPE_HEIGHT = 3,
        TEXTURETYPE_PBR_ALBEDO = 4,
        TEXTURETYPE_PBR_ROUGHNESS = 5,
        TEXTURETYPE_PBR_METALNESS = 6,
        TEXTURETYPE_PBR_NORMAL = 7,
        TEXTURETYPE_PBR_AO = 8,
        TEXTURETYPE_COUNT
    };
 
    enum TextureWrap : int {
        TEXTUREWRAP_REPEAT = 0,
        TEXTUREWRAP_CLAMP = 1,
        TEXTUREWRAP_CLAMPTOEDGE = 2,
        TEXTUREWRAP_NEAREST = 3
    };
 
    enum TextureMagFilter : int {
        TEXTUREMINMAGFILTER_LINEAR = 0,
        TEXTUREMINMAGFILTER_MIPMAPLINEAR = 1,
        TEXTUREMINMAGFILTER_NEAREST = 2,
        TEXTUREMINMAGFILTER_CLAMP = 3
    };
 
    gTexture();
    gTexture(int w, int h, int format = GL_RGBA, bool isFbo = false);
    gTexture(const gTexture& other);
    gTexture(gTexture&& other) noexcept;
    gTexture& operator=(const gTexture& other);
    gTexture& operator=(gTexture&& other) noexcept;
    virtual ~gTexture();
 
    virtual unsigned int load(const std::string& fullPath);
    unsigned int loadTexture(const std::string& texturePath);
 
    unsigned int loadMask(const std::string& fullPath);
 
    unsigned int loadMaskTexture(const std::string& maskTexturePath);
 
    void bind() const;
    void bind(int textureSlotNo) const;
    void unbind() const;
 
    unsigned int getId() const;
    bool isHDR() const;
    unsigned int getInternalFormat() const;
    unsigned int getFormat() const;
    void setType(TextureType textureType);
    TextureType getType() const;
    void setWrapping(int wrapS, int wrapT);
    void setFiltering(int minFilter, int magFilter);
    int getWrapS() const;
    int getWrapT() const;
    int getFilterMin() const;
    int getFilterMag() const;
    const std::string& getTypeName() const;
    const std::string& getFilename() const;
    const std::string& getDir() const;
    const std::string& getFullPath() const;
 
    int getWidth() const;
    int getHeight() const;
    int getComponentNum() const;
 
    void draw(int x, int y);
    void draw(int x, int y, int w, int h);
    void draw(int x, int y, int w, int h, float rotate);
    void draw(int x, int y, int w, int h, int pivotx, int pivoty, float rotate);
    void draw(glm::vec2 position, glm::vec2 size, float rotate = 0.0f);
    void draw(glm::vec2 position, glm::vec2 size, glm::vec2 pivot, float rotate = 0.0f);
 
    void drawSub(int x, int y, int sx, int sy, int sw, int sh);
    void drawSub(int x, int y, int w, int h, int sx, int sy, int sw, int sh);
    void drawSub(int x, int y, int w, int h, int sx, int sy, int sw, int sh, float rotate);
    void drawSub(int x, int y, int w, int h, int sx, int sy, int sw, int sh, int pivotx, int pivoty, float rotate);
    void drawSub(glm::vec2 pos, glm::vec2 size, glm::vec2 subpos, glm::vec2 subsize, float rotate = 0.0f);
    void drawSub(glm::vec2 pos, glm::vec2 size, glm::vec2 subpos, glm::vec2 subsize, glm::vec2 pivot, float rotate = 0.0f);
    void drawSub(const gRect& src, const gRect& dst, float rotate = 0.f);
    void drawSub(const gRect& src, const gRect& dst, int pivotx, int pivoty, float rotate = 0.f);
    void drawSub(const gRect& src, const gRect& dst, glm::vec2 pivot, float rotate = 0.f);
 
    unsigned int setData(unsigned char* textureData, int width, int height, int componentNum, bool isMutable = false, bool isStbImage = false);
    unsigned int setDataHDR(float* textureData, int width, int height, int componentNum, bool isMutable = false, bool isStbImage = false);
 
    void setupRenderData();
 
    void cleanupData();
    void cleanupAll();
 
    void save(std::string fullpath);
    void saveTexture(std::string fileName);
 
    unsigned char* getData();
 
    static const std::string& getTypeName(TextureType textureType);
 
protected:
    std::string fullpath, directory;
    unsigned int id, internalformat, format;
    TextureType type;
    std::string path;
    int width, height, componentnum;
    unsigned char* data;
    bool ismutable;
    bool isstbimage;
    int wraps, wrapt, filtermin, filtermag;
 
    void setDataInternal(unsigned char* textureData, bool isMutable = false, bool isStbImage = false, bool clean = true);
    void setDataInternalHDR(float* textureData, bool isMutable = false, bool  isStbImage = false, bool clean = true);
    bool isMutable();
 
    void swap(gTexture& other) noexcept;
    void copyFrom(const gTexture& other) noexcept;
 
    std::string getDirName(const std::string& fname);
    std::string getFileName(const std::string& fname);
 
    bool ishdr;
    float* datahdr;
    bool ismaskloaded;
    gTexture* masktexture;
    bool istextureallocated;
 
private:
 
    unsigned int quadVAO, quadVBO;
    glm::mat4 imagematrix;
    void setupRenderData(int sx, int sy, int sw, int sh);
    void beginDraw();
    void endDraw();
    bool isfbo;
    bool isloaded;
    bool issubpart;
    glm::vec2 subpos;
    glm::vec2 subscale;
};
 
#endif /* ENGINE_GRAPHICS_GTEXTURE_H_ */