from aspose.threed import Scene
from aspose.threed.entities import Cylinder
from aspose.threed.shading import PhongMaterial
from aspose.threed.formats import PdfSaveOptions, PdfLightingScheme, PdfRenderMode
# Create a new scene
scene = Scene()
# Create a cylinder child node
cylinder = scene.root_node.create_child_node("cylinder", Cylinder())
cylinder.material = PhongMaterial()
# Set rendering mode and lighting scheme
opt = PdfSaveOptions()
opt.lighting_scheme = PdfLightingScheme.CAD
opt.render_mode = PdfRenderMode.SHADED_ILLUSTRATION
# Save in the PDF format
scene.save("output_out.pdf", opt)