GLFW_example.cpp

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/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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/*  Copyright (c) 2005-2016, Michele Bosi, John Lagerquist                            */
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#include <vlCore/VisualizationLibrary.hpp>
#include <vlGLFW/GLFW_window.hpp>
#include "Applets/App_RotatingCube.hpp"

using namespace vl;

const unsigned n_instances = 3;

int main(int argc, char* args[])
{
  /* init Visualization Library */
  VisualizationLibrary::init();

  /* setup the OpenGL context format */
  OpenGLContextFormat format;
  format.setDoubleBuffer(true);
  format.setRGBABits( 8,8,8,8 );
  format.setDepthBufferBits(24);
  format.setStencilBufferBits(8);
  format.setFullscreen(false);
  //format.setMultisampleSamples(16);
  //format.setMultisample(true);

  int x = 100;
  int y = 100;
  int width = 512;
  int height = 512;

  struct instance_t
  {
	  ref<Applet> applet;
	  ref<vlGLFW::GLFW_window> window;
  } instances[n_instances];

  for (int i = 0; i < n_instances; ++i)
  {
		/* create the applet to be run */
		instances[i].applet = new App_RotatingCube;
		instances[i].applet->initialize();

		/* create a native GLFW window */
		instances[i].window = new vlGLFW::GLFW_window;

		/* bind the applet so it receives all the GUI events related to the OpenGLContext */
		instances[i].window->addEventListener(instances[i].applet.get());
		/* target the window so we can render on it */
		instances[i].applet->rendering()->as<Rendering>()->renderer()->setFramebuffer(instances[i].window->framebuffer() );
		/* shades of gray background */
		instances[i].applet->rendering()->as<Rendering>()->camera()->viewport()->setClearColor( vl::fvec4(i * 0.2f, i * 0.2f, i * 0.2f, 1));
		/* define the camera position and orientation */
		vec3 eye    = vec3(0,10,35); // camera position
		vec3 center = vec3(0,0,0);   // point the camera is looking at
		vec3 up     = vec3(0,1,0);   // up direction
		mat4 view_mat = mat4::getLookAt(eye, center, up);
		instances[i].applet->rendering()->as<Rendering>()->camera()->setViewMatrix( view_mat );
		/* Initialize the OpenGL context and window properties */

		instances[i].window->initGLFW_window("Visualization Library on GLFW - Rotating Cube", format, x, y, width, height);
		x += 30;
		y += 30;
  }

  /* run GLFW message loop */
  vlGLFW::GLFW_window::eventLoop();

  /* shutdown Visualization Library */
  VisualizationLibrary::shutdown();

  return 0;
}
// Have fun!