VIZ++ Samples

1 Screenshot

2 Source code

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


#include <viz++/opengl/OpenGLMainView.h>
#include <viz++/opengl/OpenGLGC.h>
#include <viz++/opengl/OpenGLLight.h>
#include <viz++/opengl/OpenGLMaterial.h>
#include <viz++/opengl/ColorNormalVertex.h>

#include <viz++/opengl/OpenGLVertex3.h>
#include <viz++/opengl/OpenGLClientState.h>
#include <viz++/openglarb/OpenGLVertexBufferARB.h>
#include <viz++/openglarb/OpenGLIndexBufferARB.h>

#include <viz++/opengl2/OpenGLVertexAttribute.h>

#include "Resource.h"

namespace VIZ {

class MainView :public OpenGLMainView {

private:
  SmartPtr<OpenGLGC>              gc;
  SmartPtr<OpenGLVertexBufferARB> vertexBuffer;
  SmartPtr<OpenGLIndexBufferARB>  indexBuffer;

  int numVertices;
  int numIndices;
    
public:
  virtual void display()
  {
    if (gc && vertexBuffer && indexBuffer) { 
      gc -> clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
      gc -> loadIdentity();

      try {
        gc -> translate(0.0f,0.0f,-1.0f);  
        gc -> lookAt(2.0, 4.0, 6.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0); 
        gc -> clearColor(1.0f, 0.8f, 0.8f, 1.0f);
        
        //OpenGLClientState constructor enables its argument, and the destructor disables its argument.  
        
        OpenGLClientState state1(GL_VERTEX_ARRAY); 
        OpenGLClientState state2(GL_COLOR_ARRAY);
        OpenGLClientState state3(GL_NORMAL_ARRAY);
        
        const GLfloat lightPosition[] = {  5.0,  5.0, -8.0 , 1.0 };
        const GLfloat lightColor[]    = {  1.0,  0.0,  0.0 , 1.0 };
        const GLfloat materialColor[] = {  0.8,  0.8,  0.4 , 1.0 };
    
        OpenGLLight light(GL_LIGHT0);
        light.position(lightPosition);
        light.diffuse(lightColor);
        light.enable(); 
      
        OpenGLMaterial material(GL_FRONT_AND_BACK );
        material.diffuse(materialColor);

        vertexBuffer -> bind();
        indexBuffer  -> bind();

          gc -> interleavedArrays(GL_C4F_N3F_V3F, 0, NULL);
        gc -> drawElements(GL_QUADS, numIndices, GL_UNSIGNED_INT, NULL);

        vertexBuffer -> unbind();
        indexBuffer  -> unbind();
      
      } catch (Exception& ex) {
        caught(ex); 
      }
    }
  }
 
  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();

    gc -> matrixMode(GL_PROJECTION);
    gc -> loadIdentity();

    gc -> enable( GL_DEPTH_TEST );
    gc -> frustum(1 , -1 , -1 , 1 , 1 , 10);
    gc -> clearColor(0.0, 0.0, 1.0, 1.0);
    
    try {      

      static ColorNormalVertex<float,4,3,3> vertices[] = {
         { 0.5f, 0.0f, 0.0f, 0.5f,  -0.6f,  0.6f,  0.6f,  -0.5f,  0.5f,  0.5f },
         { 0.5f, 0.0f, 0.0f, 0.5f,  -0.6f, -0.6f,  0.6f,  -0.5f, -0.5f,  0.5f },
         { 0.5f, 0.0f, 0.0f, 0.5f,   0.6f,  0.6f,  0.6f,   0.5f,  0.5f,  0.5f },
         { 0.5f, 0.0f, 0.0f, 0.5f,   0.6f, -0.6f,  0.6f,   0.5f, -0.5f,  0.5f },
         { 0.5f, 0.0f, 0.0f, 0.5f,   0.6f,  0.6f, -0.6f,   0.5f,  0.5f, -0.5f },
         { 0.5f, 0.0f, 0.0f, 0.5f,   0.6f, -0.6f, -0.6f,   0.5f, -0.5f, -0.5f },
         { 0.5f, 0.0f, 0.0f, 0.5f,  -0.6f,  0.6f, -0.6f,  -0.5f,  0.5f, -0.5f },
         { 0.5f, 0.0f, 0.0f, 0.5f,  -0.6f, -0.6f, -0.6f,  -0.5f, -0.5f, -0.5f },
      };
    
      static GLuint indices[] = {
       0, 2, 3, 1,    
       2, 4, 5, 3,    
       4, 6, 7, 5,    
       6, 0, 1, 7,    
       6, 4, 2, 0,    
       1, 3, 5, 7,    
      };

      gc -> clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
      gc -> loadIdentity();

      numVertices = CountOf(vertices);
     
      vertexBuffer = new OpenGLVertexBufferARB();

      vertexBuffer -> bind();
      vertexBuffer -> data(//sizeof(vertices),
            numVertices*sizeof(ColorNormalVertex<float,4,3,3>), 
            vertices, GL_STATIC_DRAW_ARB);
      vertexBuffer -> unbind();
              
      numIndices  = CountOf( indices );

      indexBuffer  = new OpenGLIndexBufferARB();
      indexBuffer -> bind();
      indexBuffer -> data(numIndices*4, indices, GL_STATIC_DRAW_ARB);
      indexBuffer -> unbind();
      
    } catch (Exception& ex) {
      caught(ex);
    }
  }

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;
}