main.cpp

光滑质点无网格法SPH并行计算程序

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// 
// =============================================================================
//                       Minimalist OpenGL Environment
// =============================================================================
//
// Copyright 2007 Balazs Domonkos
// 
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

//
// Micro GUI support in MinGLE

// mingle.h should be included before all other
// OpenGL headers
#include <mingle.h>
using namespace MinGLE;

//#include <GL/glut.h> TODO
#include <iostream>

class SceneRenderer : public WindowListener {
	protected:
		double mScale;
		bool mRender;

	public:
		SceneRenderer() :
			mScale(0.3), mRender(true)
		{
		}
	
		double *getScalePtr() {
			return &mScale;
		}

		bool *getRenderPtr() {
			return &mRender;
		}

    protected:
		virtual bool onRender() {
	    	// if(mRender) glutSolidTeapot(mScale); TODO
	    	
	    	// Enable the next window listener to render
	    	return false;
		}
};

class GuiDemo : public GuiSheet {
	protected:
		static Font *mFont;
		TextField *fpsText;

	public:
		GuiDemo(double *scale, bool *render) : GuiSheet("data", "gui/samplegui.xml")
		{
			// Setup widgets
			fpsText = GuiSheet::getWidgetByName<TextField>("myPanel/myText");
			GuiSheet::getWidgetByName<CheckBox>("myPanel/myCheckBox")->setUserData(render);
			GuiSheet::getWidgetByName<Slider>("myPanel/mySlider")->setUserData(scale);
		}
		
		~GuiDemo() {
			delete mFont;
		}

		static void setFont() {
			mFont = FontRendering::createFont("data", "fonts/zekton-18.xml");
			TextField::setDefaultFont(mFont);
		}

		virtual bool onKeyEvent(int key, unsigned modifiers, KeyEventState state) {
			if (key == 'r' && !modifiers && state != KEY_UP) {
				loadFromFile("data", "gui/samplegui.xml");
				return true;
			}

			return GuiSheet::onKeyEvent(key, modifiers, state);
		}
		
		// This method is called before rendering the gui
		virtual void onUpdate() {
			fpsText->setText(StringUtils::toString(mWindow->getFrameRate(), 2) + " FPS");
		}
};

Font *GuiDemo::mFont = 0;

int main(int argc, char **argv) {

	try {

    	// Initialize rendering system
    	System::initialize(&argc, argv);

    	// Create window
    	Window *win = System::createWindow();
    	win->setRenderMode(WindowAttributes::RENDER_ON_TIMER);

		// Add keyhandler
		win->registerWindowListener(new ApplicationKeyHandler());

    	// Register the scene renderer
    	SceneRenderer *sceneRenderer = new SceneRenderer();
    	win->registerWindowListener(sceneRenderer);

		// Add navigator
		win->registerWindowListener(new ExaminerNavigator());

		// Register gui sheet
		// Note that the order of the rendering is:
		// (ApplicationKeyHandler) -> SceneRenderer -> (ExaminerNavigator) -> GuiSheet
		// but the order of input handling is reversed:
		// GuiSheet -> ExaminerNavigator -> SceneRenderer -> ApplicationKeyHandler
		GuiDemo::setFont();
		GuiDemo *guiDemo = new GuiDemo(sceneRenderer->getScalePtr(), sceneRenderer->getRenderPtr());
		win->registerWindowListener(guiDemo);

    	// Setup OpenGL
    	glEnable(GL_DEPTH_TEST);
    	glShadeModel(GL_SMOOTH);
    
    	GLfloat position[] = { 3.0f, 3.0f, 3.0f, 1.0f };
    	GLfloat diffuse[] = { 0.8f, 0.8f, 0.8f, 1.0f };
    	GLfloat specular[] = {1.0f, 1.0f, 1.0f , 1.0f};
    	glEnable(GL_LIGHTING);
    	glEnable(GL_LIGHT0);
    	glLightfv(GL_LIGHT0, GL_POSITION, position);
    	glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
    	glLightfv(GL_LIGHT0, GL_SPECULAR, specular);

    	// Enter the event handing loop
    	System::enterMainLoop();
    	
	} catch(const Exception& e) {
		std::cerr << "Error: " << e.mDescription << " (Thrown in " << e.mFile << ':'
			<< e.mMethod << " line " << e.mLine << ')' << std::endl;
	}

    return 0;
}