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#include <algorithm>
#include <string>
#include <texture.hpp>
/**
* A structure for keeping track of loaded textures.
*/
typedef struct {
std::string name; /**< The file path of the texture. */
GLuint tex; /**< The GLuint for the loaded texture. */
dim2 dim; /**< The dimensions of the texture. */
} texture_t;
struct index_t {
Color color;
int indexx;
int indexy;
};
/**
* A vector of all loaded textures.
*
* Should a texture be asked to be loaded twice, loadTexture() can reference
* this array and reuse GLuint's to save memory.
*/
static std::vector<texture_t> LoadedTexture;
namespace Texture{
Color pixels[8][4];
GLuint loadTexture(std::string fileName) {
SDL_Surface *image;
GLuint object = 0;
// check if texture is already loaded
for(auto &t : LoadedTexture) {
if (t.name == fileName) {
#ifdef DEBUG
DEBUG_printf("Reusing loaded texture for %s\n", fileName.c_str());
#endif // DEBUG
return t.tex;
}
}
// load SDL_surface of texture
if (!(image = IMG_Load(fileName.c_str())))
return 0;
#ifdef DEBUG
DEBUG_printf("Loaded image file: %s\n", fileName.c_str());
#endif // DEBUG
/*
* Load texture through OpenGL.
*/
glGenTextures(1,&object); // Turns "object" into a texture
glBindTexture(GL_TEXTURE_2D,object); // Binds "object" to the top of the stack
glPixelStoref(GL_UNPACK_ALIGNMENT,1);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); // Sets the "min" filter
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); // The the "max" filter of the stack
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); // Wrap the texture to the matrix
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); //
glTexImage2D(GL_TEXTURE_2D, // Sets the texture to the image file loaded above
0,
GL_RGBA,
image->w,
image->h,
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
image->pixels
);
// add texture to LoadedTexture
LoadedTexture.push_back(texture_t{fileName,object,{image->w,image->h}});
// free the SDL_Surface
SDL_FreeSurface(image);
return object;
}
dim2 imageDim(std::string fileName) {
for(auto &t : LoadedTexture) {
if (t.name == fileName)
return t.dim;
}
return {0,0};
}
void freeTextures(void) {
while(!LoadedTexture.empty()) {
glDeleteTextures(1, &LoadedTexture.back().tex);
LoadedTexture.pop_back();
}
}
#define CINDEX_WIDTH (8*4*3)
void initColorIndex() {
unsigned int i;
GLubyte *buffer;
GLfloat *bufferf;
buffer = new GLubyte[CINDEX_WIDTH];
bufferf = new GLfloat[CINDEX_WIDTH];
colorIndex = loadTexture("assets/colorIndex.png");
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, colorIndex);
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_UNSIGNED_BYTE, buffer);
for(i = 0; i < CINDEX_WIDTH; i++)
bufferf[i] = (float)buffer[i] / 255.0f;
i = 0;
for(unsigned int y = 0; y < 8; y++) {
for(unsigned int x = 0; x < 4; x++) {
if (i >= CINDEX_WIDTH) {
delete[] buffer;
delete[] bufferf;
return;
}
pixels[y][x].red = buffer[i++];
pixels[y][x].green = buffer[i++];
pixels[y][x].blue = buffer[i++];
}
}
delete[] buffer;
delete[] bufferf;
}
//sqrt((255-145)^2+(90-145)^2+(0-0)^2);
std::vector<index_t>ind;
vec2 getIndex(Color c) {
for(auto &i : ind) {
if (c.red == i.color.red && c.green == i.color.green && c.blue == i.color.blue) {
return {float(i.indexx), float(i.indexy)};
}
}
uint buf[2];
float buff = 999;
float shit = 999;
for(uint y = 0; y < 8; y++) {
for(uint x = 0; x < 4; x++) {
buff = sqrt(pow((pixels[y][x].red- c.red), 2)+
pow((pixels[y][x].green-c.green),2)+
pow((pixels[y][x].blue- c.blue), 2));
if (buff < shit) {
shit = buff;
buf[0] = y;
buf[1] = x;
}
}
}
ind.push_back({c, (int)buf[1], (int)buf[0]});
return {float(buf[1]),float(buf[0])};
}
}
Texturec::Texturec(uint amt, ...) {
va_list fNames;
texState = 0;
va_start(fNames, amt);
for(unsigned int i = 0; i < amt; i++)
image.push_back(Texture::loadTexture(va_arg(fNames, char *)));
va_end(fNames);
}
Texturec::Texturec(std::initializer_list<std::string> l)
{
texState = 0;
std::for_each(l.begin(), l.end(), [&](std::string s) { image.push_back(Texture::loadTexture(s)); });
}
Texturec::Texturec(std::vector<std::string>v) {
texState = 0;
std::for_each(v.begin(), v.end(), [&](std::string s) { image.push_back(Texture::loadTexture(s)); });
}
Texturec::Texturec(uint amt,const char **paths) {
texState = 0;
for(unsigned int i = 0; i < amt; i++)
image.push_back(Texture::loadTexture(paths[i]));
}
Texturec::~Texturec() {
}
void Texturec::bind(unsigned int bn) {
texState = bn;
glBindTexture(GL_TEXTURE_2D,image[(int)texState]);
}
void Texturec::bindNext() {
bind(++texState);
}
void Texturec::bindPrev() {
bind(--texState);
}
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