Schneider's Simple Raytracer

- x/z-, y/z-, x/y (spot)- view- Insert a ray or pencil of rays (single wavelength or multicolor)- Insert a surface: aperture, refraction, fresnel, reflection- Image plane: max value of the image (+), min value of the image (-), size (deltaY/deltaX)- Instrument bar: z-value of surface, focal length, material or fix refractive index- Modify optical system in the fly- Long click on a buttons to modify settings