/****************************************************************************
* VCGLib                                                            o o     *
* Visual and Computer Graphics Library                            o     o   *
*                                                                _   O  _   *
* Copyright(C) 2004                                                \/)\/    *
* Visual Computing Lab                                            /\/|      *
* ISTI - Italian National Research Council                           |      *
*                                                                    \      *
* All rights reserved.                                                      *
*                                                                           *
* 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 (http://www.gnu.org/licenses/gpl.txt)          *
* for more details.                                                         *
*                                                                           *
****************************************************************************/
/****************************************************************************
  History

$Log: not supported by cvs2svn $
Revision 1.3  2004/05/26 15:13:01  cignoni
Removed inclusion of gl extension stuff and added glcolor stuff

Revision 1.2  2004/05/13 23:44:47  ponchio
<GL/GL.h>  -->   <GL/gl.h>

Revision 1.1  2004/04/05 11:56:14  cignoni
First working version!


****************************************************************************/

#ifndef VCG_GL_SPACE_H
#define VCG_GL_SPACE_H

// Please note that this file assume that you have already included your 
// gl-extension wrapping utility, and that therefore all the extension symbol are already defined.

#include <vcg/space/point2.h>
#include <vcg/space/point3.h>
#include <vcg/space/color4.h>
#include <vcg/space/box3.h>

namespace vcg {

	inline void glVertex(Point2<int> const & p)   { glVertex2iv(p.V());}
	inline void glVertex(Point2<short> const & p) { glVertex2sv(p.V());}
	inline void glVertex(Point2<float> const & p) { glVertex2fv(p.V());}
	inline void glVertex(Point2<double> const & p){ glVertex2dv(p.V());}
	inline void glTexCoord(Point2<int> const & p)   { glTexCoord2iv(p.V());}
	inline void glTexCoord(Point2<short> const & p) { glTexCoord2sv(p.V());}
	inline void glTexCoord(Point2<float> const & p) { glTexCoord2fv(p.V());}
	inline void glTexCoord(Point2<double> const & p){ glTexCoord2dv(p.V());}
	inline void glTranslate(Point2<float> const & p) { glTranslatef(p[0],p[1],0);}
	inline void glTranslate(Point2<double> const & p){ glTranslated(p[0],p[1],0);}
	inline void glScale(Point2<float> const & p) { glScalef(p[0],p[1],0);}
	inline void glScale(Point2<double> const & p){ glScaled(p[0],p[1],0);}

  inline void glVertex(Point3<int> const & p)   { glVertex3iv(p.V());}
	inline void glVertex(Point3<short> const & p) { glVertex3sv(p.V());}
	inline void glVertex(Point3<float> const & p) { glVertex3fv(p.V());}
	inline void glVertex(Point3<double> const & p){ glVertex3dv(p.V());}
	inline void glNormal(Point3<int> const & p)   { glNormal3iv(p.V());}
	inline void glNormal(Point3<short> const & p) { glNormal3sv(p.V());}
	inline void glNormal(Point3<float> const & p) { glNormal3fv(p.V());}
	inline void glNormal(Point3<double> const & p){ glNormal3dv(p.V());}
	inline void glTexCoord(Point3<int> const & p)   { glTexCoord3iv(p.V());}
	inline void glTexCoord(Point3<short> const & p) { glTexCoord3sv(p.V());}
	inline void glTexCoord(Point3<float> const & p) { glTexCoord3fv(p.V());}
	inline void glTexCoord(Point3<double> const & p){ glTexCoord3dv(p.V());}
	inline void glTranslate(Point3<float> const & p) { glTranslatef(p[0],p[1],p[2]);}
	inline void glTranslate(Point3<double> const & p){ glTranslated(p[0],p[1],p[2]);}
	inline void glScale(Point3<float> const & p) { glScalef(p[0],p[1],p[2]);}
	inline void glScale(Point3<double> const & p){ glScaled(p[0],p[1],p[2]);}

  inline void glColor(Color4b const & c)   { glColor4ubv(c.V());}
  inline void glClearColor(Color4b const &c) {	::glClearColor(float(c[0])/255.0f,float(c[1])/255.0f,float(c[2])/255.0f,1.0f);}
  inline void glLight(GLenum light, GLenum pname,  Color4b const & c)   { 
    static float cf[4]; 
    cf[0]=float(cf[0]/255.0); cf[1]=float(c[1]/255.0); cf[2]=float(c[2]/255.0); cf[3]=float(c[3]/255.0); 
    glLightfv(light,pname,cf);
  }


 template <class T>
   inline void glBoxWire(Box3<T> const & b)   
{ 
	glPushAttrib(GL_ENABLE_BIT);
	glDisable(GL_LIGHTING);
	glBegin(GL_LINE_STRIP);
	glVertex3f((float)b.min[0],(float)b.min[1],(float)b.min[2]);
	glVertex3f((float)b.max[0],(float)b.min[1],(float)b.min[2]);
	glVertex3f((float)b.max[0],(float)b.max[1],(float)b.min[2]);
	glVertex3f((float)b.min[0],(float)b.max[1],(float)b.min[2]);
	glVertex3f((float)b.min[0],(float)b.min[1],(float)b.min[2]);
	glEnd();
	glBegin(GL_LINE_STRIP);
	glVertex3f((float)b.min[0],(float)b.min[1],(float)b.max[2]);
	glVertex3f((float)b.max[0],(float)b.min[1],(float)b.max[2]);
	glVertex3f((float)b.max[0],(float)b.max[1],(float)b.max[2]);
	glVertex3f((float)b.min[0],(float)b.max[1],(float)b.max[2]);
	glVertex3f((float)b.min[0],(float)b.min[1],(float)b.max[2]);
	glEnd();
	glBegin(GL_LINES);
	glVertex3f((float)b.min[0],(float)b.min[1],(float)b.min[2]);
	glVertex3f((float)b.min[0],(float)b.min[1],(float)b.max[2]);
	
	glVertex3f((float)b.max[0],(float)b.min[1],(float)b.min[2]);
	glVertex3f((float)b.max[0],(float)b.min[1],(float)b.max[2]);
	
	glVertex3f((float)b.max[0],(float)b.max[1],(float)b.min[2]);
	glVertex3f((float)b.max[0],(float)b.max[1],(float)b.max[2]);
	
	glVertex3f((float)b.min[0],(float)b.max[1],(float)b.min[2]);
	glVertex3f((float)b.min[0],(float)b.max[1],(float)b.max[2]);
	glEnd();
	glPopAttrib();
};
template <class T>
	/// Funzione di utilita' per la visualizzazione in OpenGL (flat shaded)
inline void glBoxFlat(Box3<T> const & b)   
{
	glPushAttrib(GL_SHADE_MODEL);
	glShadeModel(GL_FLAT);
	glBegin(GL_QUAD_STRIP);
	glNormal3f(.0f,.0f,1.0f);
	glVertex3f(b.min[0], b.max[1], b.max[2]);
  glVertex3f(b.min[0], b.min[1], b.max[2]);
	glVertex3f(b.max[0], b.max[1], b.max[2]);
  glVertex3f(b.max[0], b.min[1], b.max[2]);
	glNormal3f(1.0f,.0f,.0f);
	glVertex3f(b.max[0], b.max[1], b.min[2]);
	glVertex3f(b.max[0], b.min[1], b.min[2]);
  glNormal3f(.0f,.0f,-1.0f);
	glVertex3f(b.min[0], b.max[1], b.min[2]);
	glVertex3f(b.min[0], b.min[1], b.min[2]);
	glNormal3f(-1.0f,.0f,.0f);
	glVertex3f(b.min[0], b.max[1], b.max[2]);
	glVertex3f(b.min[0], b.min[1], b.max[2]);
	glEnd();

  glBegin(GL_QUADS);
	glNormal3f(.0f,1.0f,.0f);
	glVertex3f(b.min[0], b.max[1], b.max[2]);
	glVertex3f(b.max[0], b.max[1], b.max[2]);
	glVertex3f(b.max[0], b.max[1], b.min[2]);
  glVertex3f(b.min[0], b.max[1], b.min[2]);

	glNormal3f(.0f,-1.0f,.0f);
	glVertex3f(b.min[0], b.min[1], b.min[2]);
  glVertex3f(b.max[0], b.min[1], b.min[2]);
	glVertex3f(b.max[0], b.min[1], b.max[2]);
  glVertex3f(b.min[0], b.min[1], b.max[2]);
  glEnd();
	glPopAttrib();
};


template <class T>
	/// Setta i sei clip planes di opengl a far vedere solo l'interno del box 
inline void glBoxClip(Box3<T> const & b)   
{
	double eq[4];	
	eq[0]= 1; eq[1]= 0; eq[2]= 0; eq[3]=(double)-b.min[0];
	glClipPlane(GL_CLIP_PLANE0,eq);
	eq[0]=-1; eq[1]= 0; eq[2]= 0; eq[3]=(double) b.max[0];
	glClipPlane(GL_CLIP_PLANE1,eq);

	eq[0]= 0; eq[1]= 1; eq[2]= 0; eq[3]=(double)-b.min[1];
	glClipPlane(GL_CLIP_PLANE2,eq);
	eq[0]= 0; eq[1]=-1; eq[2]= 0; eq[3]=(double) b.max[1];
	glClipPlane(GL_CLIP_PLANE3,eq);


	eq[0]= 0; eq[1]= 0; eq[2]= 1; eq[3]=(double)-b.min[2];
	glClipPlane(GL_CLIP_PLANE4,eq);
	eq[0]= 0; eq[1]= 0; eq[2]=-1; eq[3]=(double) b.max[2];
	glClipPlane(GL_CLIP_PLANE5,eq);
}

}//namespace
#endif