Graphics

inline  void CMesh::RenderFaceNormals()<br />
{<br />
	float t=0.5;<br />
	CVector v0,v1;<br />
	<br />
	for(int i=0 ; i< get_numOfFaces() ;i++)<br />
	{<br />
		v0 = (verts[faces[i]->get_v0()]->get_gp()+ verts[faces[i]->get_v1()]->get_gp()+ verts[faces[i]->get_v2()]->get_gp() )/3;<br />
		v1 = t * faces[i]->get_normal();<br />
<br />
		glBegin(GL_LINES);<br />
        glVertex3f(v0.X(), v0.Y(), v0.Z()); // origin of the line<br />
        glVertex3f(v1.X(), v1.Y(), v1.Z()); // ending point of the line<br />
        glEnd();<br />
	}<br />
}