Up from version 3.3.2. 'ILSurface' allows the definition of a function of two arguments to be plotted as a surface:
private void ilPanel1_Load(object sender, EventArgs e) {
ilPanel1.Scene.Add(
new ILPlotCube(twoDMode: false) {
new ILSurface((x,y) => {
return (float)Math.Sin(0.1f * x * x + 0.2f * y * y);
})
});
}
Result: