K3dDrawSphere.cpp

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/***************************************************************************
 *   Copyright (C) 2007 by Jan Koci   *
 *   honza.koci@email.cz   *
 *   http://kengine.sourceforge.net/tutorial/
 *                                                                         *
 *   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.             *
 ***************************************************************************/

#include "K3dDrawSphere.h"

void K3dDrawSphere::DrawSpheres()
{
        for(int i=0; i<m_pGameData->GetSphereObjSP().GetNum(); i++)
        {
                // Get sphere
                K3dSphereObj *pSphere = m_pGameData->GetSphereObjSP().Get(i);
                // Enable blending
                glEnable(GL_BLEND);
                // Set blend function
                glBlendFunc(GL_ONE, GL_ONE);
                glPushMatrix();
                // Move with sphere by matrix
                m_kViewMatrix = *m_pGameData->GetViewMatrix();
                m_kModelMatrix = *pSphere->GetMatrix();
                // Multiply model and view matrix
                m_kViewMatrix.Multiply( m_kModelMatrix);
                // Set new model view matrix
                glLoadMatrixf(m_kViewMatrix.GetMatrix());
                int iTextureId = pSphere->GetTextureId();
                // If the sphere has a texture
                if(iTextureId > 0)
                {
                        // Texture a sphere
                        glEnable(GL_TEXTURE_2D);
                        glBindTexture(GL_TEXTURE_2D, iTextureId);
                        gluQuadricTexture(m_pQuadricObj, true);
                }
                glColor3ubv(pSphere->GetColor()->GetColorArray());
                gluQuadricDrawStyle(m_pQuadricObj, GLU_FILL);
                gluQuadricOrientation(m_pQuadricObj,GLU_OUTSIDE);
                gluQuadricNormals(m_pQuadricObj, GLU_SMOOTH);
                gluSphere(m_pQuadricObj, pSphere->GetRadius(), pSphere->GetNumSlices(), pSphere->GetNumStacks());
                glPopMatrix();
                // Disable blending
                glDisable(GL_BLEND);
                // Set default white color
                glColor3ub( 255, 255, 255 ); 
        }
}

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