egp.ReadPostFile("case.ep"); egp.SetSurfaces(true); egp.SetIsoSurfaces(true); egp.SetFeatureEdges(true); egp.SetText(true); preferences.SetFeatureAngle(45); surfaces.SetFieldName("Null"); surfaces.SetOpacity(20); isoSurfaces.SetFieldName("nodes_z"); isoSurfaces.SetColorName("Temperature"); isoSurfaces.SetContours(true); isoSurfaces.KeepFieldLimits(true); text.SetMessage(""); text.SetSize(24); text.SetBold(true); egp.SetOrientation(45, 45, 0); egp.ResetCamera(); egp.Render(); var zmin = egp.GetMinZ(); var zmax = egp.GetMaxZ(); for(var i = 0; i < 100; i++) { var z = zmin + i/100.0 * (zmax-zmin); isoSurfaces.SetMinFieldVal(z); isoSurfaces.SetMaxFieldVal(z); text.SetMessage("z = " + z); egp.Redraw(); }