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- # Generic Polyray input File
- # Polyray input file: Alexander Enzmann
-
- # Set up the camera
- viewpoint {
- from <0, 5, -5>
- at <0, 0, 0>
- up <0, 1, 0>
- angle 30
- resolution 160, 160
- }
-
- # Get various surface finishes
- include "colors.inc"
-
- # Set up background color & lights
- background black
- light <10, 10, -20>
-
- # Quartic saddle - looks like the quadric saddle, but is squared off in
- # the middle. The equation is:
- object {
- polynomial x^4 - z^4 - y
- root_solver Ferrari
- bounds object { sphere <0, 0, 0>, sqrt(12) }
- clips object { box <-1.5, -1.5, -1>, <1.5, 1.3, 1.5> }
- rotate <0, 20, 0>
- shiny_red
- }
-