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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 {
- object { polynomial x^4 - z^4 - y }
- & object { box <-1.5, -1.5, -1>, <1.5, 1.3, 1.5> }
- bounding_box <-1.5, -1.5, -1>, <1.5, 1.3, 1.5>
- rotate <0, 20, 0>
- shiny_red
- }
-