VIZ++ Samples

1 Screenshot

2 Source code

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


//2015/08/2 Updated
//2017/02/10 Uppdated.

#include <viz++/opengl/OpenGLMainView.h>
#include <viz++/opengl/OpenGLGC.h>
#include <viz++/opengl/OpenGLTexture2D.h>
#include <viz++/opengl/OpenGLDialog.h>
#include <viz++/StringT.h>

namespace VIZ {

class MainView :public OpenGLMainView {

private:
  SmartPtr<OpenGLGC>        gc;
  SmartPtr<OpenGLTexture2D> texture;

public:
  virtual void display()
  {
    if (gc) {
      gc -> clearColor(1.0, 1.0, 1.0, 1.0);
      gc -> clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
      gc -> color(1.0, 1.0, 1.0);
      //gc -> rotate(5.0, 0.5, 1.0, 0.25);


      glNormal3d(0.0, 0.0, 1.0);
      gc -> begin(GL_QUADS);
      texture -> coord(0.0, 0.0); 
      gc-> vertex(-1.0,  1.0, 0.0);

      texture -> coord(1.0, 0.0); 
      gc ->vertex( 1.0,  1.0, 0.0);

      texture -> coord(1.0, 1.0); 
      gc -> vertex( 1.0, -1.0, 0.0);

      texture -> coord(0.0, 1.0); 
      gc -> vertex(-1.0, -1.0, 0.0);
      gc -> end();
    }
  }
 
  virtual void resize(int w, int h)
  {
    if (w == 0 || h == 0) {
      return;
    }
    if (gc) {
      gc -> matrixMode(GL_PROJECTION);
      gc -> loadIdentity();
      gc -> ortho(-1.25, 1.25, -1.25, 1.25, 1., 20.);

      gc -> matrixMode(GL_MODELVIEW);
      gc -> loadIdentity();
      gc -> lookAt(0., 0., 10., 0., 0., 0., 0., 1., 0.);
    }
  }
  
    virtual void initialize()
    {
      gc = new OpenGLGC();
      gc -> enable(GL_DEPTH_TEST);
      gc -> enable(GL_TEXTURE_2D);

      const char* pngfile = "./images/LightedTorus.png";

      createTexture(pngfile);

    }

  void createTexture(const char* filename)
  {
    if (texture) {
      texture = NULL;
    } 
    texture = new OpenGLTexture2D();
    texture -> bind();
    texture -> parameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    texture -> parameter(GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    texture -> env(GL_TEXTURE_ENV_MODE, GL_MODULATE); 
    try {
      texture -> imageFromFile(filename);
    } catch (Exception& ex) {
      caught(ex);
    }
  }

  virtual void dropCallback(int count, const char** paths)
  {
    OpenGLDialog dialog(this);

    if (count == 1) {
      const char* filename = paths[0];
      printf("dropCallback %s\n", filename);
      if (StringT<char>::endsWithIgnoreCase(filename, ".png") ||
          StringT<char>::endsWithIgnoreCase(filename, ".jpg")) {

        createTexture(filename);
        activate();
        char title[1024];
        const char* name = filename;
        const char* slash = strrchr(filename, '\\');
        if (slash) {
           name = ++slash;
        }
        sprintf(title, "%s - %s", name, getTitle()); 
        setWindowTitle(title);

      } else {
        dialog.error("Invalid image file (%s). Please specify PNG or JPG file.", filename);
      }
    } else {
       dialog.warn("Please specify one image file");
       printf("Please specify one image file\n");
    }
  }

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

  ~MainView()
  {
  }
};
}

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

    MainView view(applet, 500, 400, name);
    view.realize();
    applet.run();
    
  } catch (Exception& ex) {
    caught(ex);
  }
  return 0;
}