void CContoursDoc::CreateTriangleList(UINT nList)
{
::glNewList(nList, GL_COMPILE);
::glNormal3f(0.0f, 0.0f, 1.0f);
::glBegin(GL_TRIANGLES);
::glTexCoord1f(0.1f);
::glVertex3d(-1, -1, 0);
::glTexCoord1f(0.7f);
::glVertex3d(-1, 1, 0);
::glTexCoord1f(1.0f);
::glVertex3d( 1, 0.8, 0);
::glEnd();
::glEndList();
}