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/******************************************************************************
* SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4 *
* (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS *
* *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, or (at *
* your option) any later version. *
* *
* This library 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 Lesser General Public License *
* for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
*******************************************************************************
* SOFA :: Framework *
* *
* Authors: M. Adam, J. Allard, B. Andre, P-J. Bensoussan, S. Cotin, C. Duriez,*
* H. Delingette, F. Falipou, F. Faure, S. Fonteneau, L. Heigeas, C. Mendoza, *
* M. Nesme, P. Neumann, J-P. de la Plata Alcade, F. Poyer and F. Roy *
* *
* Contact information: contact@sofa-framework.org *
******************************************************************************/
#ifndef SOFA_HELPER_GL_BASICSHAPES_H
#define SOFA_HELPER_GL_BASICSHAPES_H
#include <sofa/helper/gl/template.h>
#include <math.h>
namespace sofa
{
namespace helper
{
namespace gl
{
using namespace sofa::defaulttype;
template <typename V>
void drawCone(const V& p1, const V& p2, const float& radius1, const float& radius2, const int subd=8)
{
V tmp = p2-p1;
/* create Vectors p and q, co-planar with the cylinder's cross-sectional disk */
V p=tmp;
if (p[0] == 0.0 && p[1] == 0.0)
p[0] += 1.0;
else
p[2] += 1.0;
V q;
q = p.cross(tmp);
p = tmp.cross(q);
/* do the normalization outside the segment loop */
p.normalize();
q.normalize();
int i2;
float theta, st, ct;
/* build the cylinder from rectangular subd */
glBegin(GL_QUAD_STRIP);
for (i2=0 ; i2<=subd ; i2++)
{
/* sweep out a circle */
theta = (float)(i2 * 2.0 * M_PI / subd);
st = (float)sin(theta);
ct = (float)cos(theta);
/* construct normal */
tmp = p*ct+q*st;
/* set the normal for the two subseqent points */
helper::gl::glNormalT(tmp);
/* point on disk 1 */
V w(p1);
w += tmp*radius1;
helper::gl::glVertexT(w);
/* point on disk 2 */
w=p2;
w += tmp*radius2;
helper::gl::glVertexT(w);
}
glEnd();
}
template <typename V>
void drawCylinder(const V& p1, const V& p2, const float& rad, const int subd=8)
{
drawCone( p1,p2,rad,rad,subd);
}
template <typename V>
void drawArrow(const V& p1, const V& p2, const float& rad, const int subd=8)
{
V p3 = p1*.2+p2*.8;
drawCylinder( p1,p3,rad,subd);
drawCone( p3,p2,rad*2.5,0,subd);
}
template <typename V>
void drawSphere(const V& center, const float& rad, const int subd1=8, const int subd2=8)
{
GLUquadricObj* sphere = gluNewQuadric();
gluQuadricDrawStyle(sphere, GLU_FILL);
gluQuadricOrientation(sphere, GLU_OUTSIDE);
gluQuadricNormals(sphere, GLU_SMOOTH);
glPushMatrix();
helper::gl::glTranslateT( center );
gluSphere(sphere,2.0*rad,subd1,subd2);
glPopMatrix();
// delete sphere;
}
}
}
}
#endif
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