#Convert the built-in Washington Monument MULTIPOLYGON Z data to an OBJ file
obj_temp = tempfile(fileext=".obk")
save_multipolygonz_to_obj(washington_monument_multipolygonz, obj_temp, swap_yz=TRUE)
#Render with rgl
rgl::open3d()
render_obj(filename=obj_temp, xyz=matrix(c(0,0,0),ncol=3), color="red")
render_camera(theta=30,phi=40)
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