VIZ++ Samples

1 Screenshot

2 Source code

/*
 * Fog.cpp 
 * Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. 
 */


#include <viz++/opengl/OpenGLMainView.h>

#include <viz++/opengl/OpenGLGC.h>
#include <viz++/opengl/OpenGLFog.h>
#include <viz++/opengl/OpenGLVertex3.h>

namespace VIZ {

class MainView :public OpenGLMainView {

private:
  SmartPtr<OpenGLGC> gc;
 
public:
  virtual void display()
  {
    if (gc) {
      gc -> clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

      gc -> loadIdentity();
      gc -> clearColor(0.0, 0.0, 1.0, 0.0);

      gc -> matrixMode(GL_PROJECTION);
      gc -> frustum(1 , -1 , -1 , 1 , 1 , 10);
      OpenGLFog fog;
      fog.mode(GL_LINEAR);
      fog.color(0.0, 0.0, 1.0, 0.0);
      fog.start(1.0);
      fog.end(10.0);

      gc -> begin(GL_POLYGON);
      static OpenGLVertex3 vertices[] = {
        { 0.0, -0.9 , -2.0},
        { 3.0, -0.9 , -7.0},
        { 0.0,  0.9 , -2.0},
        { 0.0, -0.9 , -2.0},
        {-3.0, -0.9 , -7.0},
        { 0.0 , 0.9 , -2.0}
      };
      gc -> draw(vertices, CountOf(vertices));
      gc -> end();
    }
  }
 
  virtual void resize(int w, int h)
  {
    if (w == 0 || h == 0) {
        return;
    }
    if (gc) {
      gc -> matrixMode(GL_PROJECTION);
      gc -> loadIdentity();
      gc -> perspective(16.0, (double)w / (double)h, 0.5, 40.0); 

      gc -> matrixMode(GL_MODELVIEW);
    }
  }

  virtual void initialize()
  {
    gc = new OpenGLGC();
  }

public:
  MainView(OpenGLApplet& applet, int width, int height, const char* name)
  :OpenGLMainView(applet, width, height, name)
  {
  }
  
  ~MainView()
  {
  }
};
}

//
int main(int argc, char** argv) 
{
  try {
    ModuleFileName module;
    const char*  name = module.getAppName();
    OpenGLApplet applet(argc, argv);

    MainView view(applet, 400, 300, name);
    view.realize();
    applet.run();
    
  } catch (Exception& ex) {
    caught(ex);
  }
  return 0;
}