Simple raytracer in Scheme

Implemented using Chez Scheme 9.4.1 on a MacBook Pro.

To run:

scheme main.ss simple.scene

This will load 'simple.scene' for the scene. Output will go to 'simple.tga'.

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Features:

• Objects: sphere, plane, general quadrics, general polyhedra, cube, tetrahedron, octahedron, icosahedron, torus
• CSG: union, intersect, difference
• Shaders: constant, matte, metal, shiny-metal, plastic, stripes, checker, mirror, marble, granite, wood, glow, screen (wireframe)
• Lights: ambient, distant, point, spot

Less stable features:

• Opacity and Volume shaders
• Texture mapping
• Normal mapping
• Displacement shaders
• Glass shader
• show-st, show-xyz
• Antialiasing
• Exposure (gain and gamma)

Things to do:

• Camera blur / depth of field

• Shadows thru transparent objects need work.

• Take a look at performance. It can always be faster.

• More objects

  • cylinder
  • cone

• More lights

  • "uber" light

• More shaders

  • shiny-plastic
  • painted-plastic
  • depth-cue
  • fog
  • smoke

• Build a physics engine to help generate raytracer scenes. Imagine modelling marbles dropped into a glass then rendering 1 or more frames in time.