protected void DrawCylinder(IList <Point3D> points, float height, float radius)
{
float y1 = 0.0f;
float y2 = y1 + height;
fScene.BeginTriangleStrip();
for (int j = 0; j < points.Count; ++j)
{
var pt = points[j];
fScene.Normal3f(pt.X / radius, 0.0f, pt.Z / radius);
fScene.Vertex3f(pt.X, y1, pt.Z);
fScene.Normal3f(pt.X / radius, 0.0f, pt.Z / radius);
fScene.Vertex3f(pt.X, y2, pt.Z);
}
fScene.End();
}