move examples to examples directory

1 files changed, 0 insertions, 162 deletions

diff --git a/example_opengl.cpp b/example_opengl.cpp
deleted file mode 100644
index 1879864..0000000
--- a/example_opengl.cpp
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
-LodePNG Examples
-
-Copyright (c) 2005-2012 Lode Vandevenne
-
-This software is provided 'as-is', without any express or implied
-warranty. In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-    1. The origin of this software must not be misrepresented; you must not
-    claim that you wrote the original software. If you use this software
-    in a product, an acknowledgment in the product documentation would be
-    appreciated but is not required.
-
-    2. Altered source versions must be plainly marked as such, and must not be
-    misrepresented as being the original software.
-
-    3. This notice may not be removed or altered from any source
-    distribution.
-*/
-
-//Compile command for Linux:
-//g++ lodepng.cpp example_opengl.cpp -lSDL -lGL -O3
-
-/*
-LodePNG OpenGL example. Decodes a PNG and shows it in OpenGL. PNG filename
-should be given as a command line parameter.
-
-It's written for the most basic old OpenGL version, and a correction for non
-power of two textures had to be added.
-
-Only very few lines on the sample are about loading the PNG. Most of the
-sample lines show a way to render a texture in 2D in OpenGL.
-
-No fancy 3D graphics are shown, it only shows the image statically. The sample
-shows LodePNG can be used to load PNG images as textures in OpenGL.
-*/
-
-#include "lodepng.h"
-
-#include <iostream>
-#include <SDL/SDL.h>
-#include <GL/gl.h>
-
-int main(int argc, char *argv[])
-{
-  if(argc < 2)
-  {
-    std::cout << "Please provide a filename." << std::endl;
-    return 1;
-  }
-  const char* filename = argv[1];
-
-  // Load file and decode image.
-  std::vector<unsigned char> image;
-  unsigned width, height;
-  unsigned error = lodepng::decode(image, width, height, filename);
-
-  // If there's an error, display it.
-  if(error != 0)
-  {
-    std::cout << "error " << error << ": " << lodepng_error_text(error) << std::endl;
-    return 1;
-  }
-  
-  // Here the PNG is loaded in "image". All the rest of the code is SDL and OpenGL stuff.
-
-  int screenw = width;
-  if(screenw > 1024) screenw = 1024;
-  int screenh = height;
-  if(screenh > 768) screenw = 768;
-
-  if(SDL_Init(SDL_INIT_VIDEO) < 0)
-  {
-    std::cout << "Error: Unable to init SDL: " << SDL_GetError() << std::endl;
-    return 1;
-  }
-  
-  SDL_Surface* scr = SDL_SetVideoMode(screenw, screenh, 32, SDL_OPENGL);
-
-  if(scr == 0)
-  {
-    std::cout << "Error: Unable to set video. SDL error message: " << SDL_GetError() << std::endl;
-    return 1;
-  }
-
-  // The official code for "Setting Your Raster Position to a Pixel Location" (i.e. set up a camera for 2D screen)
-  glViewport(0, 0, screenw, screenh);
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  glOrtho(0, screenw, screenh, 0, -1, 1);
-  glMatrixMode(GL_MODELVIEW);
-  glLoadIdentity();
-
-  // Make some OpenGL properties better for 2D and enable alpha channel.
-  glDisable(GL_CULL_FACE);
-  glDisable(GL_DEPTH_TEST);
-  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-  glEnable(GL_BLEND);
-  glDisable(GL_ALPHA_TEST);
-
-  if(glGetError() != GL_NO_ERROR)
-  {
-    std::cout << "Error initing GL" << std::endl;
-    return 1;
-  }
-  
-  // Texture size must be power of two for the primitive OpenGL version this is written for. Find next power of two.
-  size_t u2 = 1; while(u2 < width) u2 *= 2;
-  size_t v2 = 1; while(v2 < height) v2 *= 2;
-  // Ratio for power of two version compared to actual version, to render the non power of two image with proper size.
-  double u3 = (double)width / u2;
-  double v3 = (double)height / v2;
-
-  // Make power of two version of the image.
-  std::vector<unsigned char> image2(u2 * v2 * 4);
-  for(size_t y = 0; y < height; y++)
-  for(size_t x = 0; x < width; x++)
-  for(size_t c = 0; c < 4; c++)
-  {
-    image2[4 * u2 * y + 4 * x + c] = image[4 * width * y + 4 * x + c];
-  }
-  
-  // Enable the texture for OpenGL.
-  glEnable(GL_TEXTURE_2D);
-  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); //GL_NEAREST = no smoothing
-  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-  glTexImage2D(GL_TEXTURE_2D, 0, 4, u2, v2, 0, GL_RGBA, GL_UNSIGNED_BYTE, &image2[0]);
-  
-  bool done = false;
-  SDL_Event event = {0};
-  glColor4ub(255, 255, 255, 255);
-  
-  while(!done)
-  {
-    // Quit the loop when receiving quit event.
-    while(SDL_PollEvent(&event))
-    {
-      if(event.type == SDL_QUIT) done = 1;
-    }
-    
-    // Draw the texture on a quad, using u3 and v3 to correct non power of two texture size.
-    glBegin(GL_QUADS);
-      glTexCoord2d( 0,  0); glVertex2f(    0,      0);
-      glTexCoord2d(u3,  0); glVertex2f(width,      0);
-      glTexCoord2d(u3, v3); glVertex2f(width, height);
-      glTexCoord2d( 0, v3); glVertex2f(    0, height);
-    glEnd();
-    
-    // Redraw and clear screen.
-    SDL_GL_SwapBuffers();
-    glClearColor(0, 0, 0, 0);
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-    
-    //Limit frames per second, to not heat up the CPU and GPU too much.
-    SDL_Delay(16);
-  }
-}