Utilities.cpp

#include "common.hpp"
#include <fstream>


//Global variables!
//-------------------
int height;
int width;
int occlusionQuality;



bool FileExists(const string &filename) {
    std::ifstream ifile(filename.c_str());
    return ifile;
}


void SetOcclusionQuality(int quality) {
    occlusionQuality = quality;
}
int GetOcclusionQuality() {
    return occlusionQuality;
}



void SetWindowHeight(int h) {
    height = h;
}

int GetWindowHeight() {
    return height;
}

void SetWindowWidth(int w) {
    width = w;
}

int GetWindowWidth() {
    return width;
}


string ReadFile(const string &filename) {
    std::ifstream ifile(filename.c_str());
    return string(std::istreambuf_iterator<char>(ifile), std::istreambuf_iterator<char>());
}


void GetErrors(void) {
    GLenum error = glGetError();

    if (error != GL_NO_ERROR) {
        switch (error) {
        case GL_INVALID_ENUM:
            cerr << "GL: enum argument out of range." << endl;
            break;
        case GL_INVALID_VALUE:
            cerr << "GL: Numeric argument out of range." << endl;
            break;
        case GL_INVALID_OPERATION:
            cerr << "GL: Operation illegal in current state." << endl;
            break;
        case GL_INVALID_FRAMEBUFFER_OPERATION:
            cerr << "GL: Framebuffer object is not complete." << endl;
            break;
        case GL_OUT_OF_MEMORY:
            cerr << "GL: Not enough memory left to execute command." << endl;
            break;
        default:
            cerr << "GL: Unknown error." << endl;
        }
    }
}