Tr

A Go implementation of Ray Tracing in One Weekend Peter Shirley.

Note: Output of the program is in .ppm format, which is not supported by many applications. See more about .ppm here

Basic

go build -o Tracer
./Tracer > outputs/image.ppm

Playing With Tracer

Edit main.go to play around and generate different renders. You may want to edit the camera parameters, add more objects (spheres) to the world or play with equations. I will be adding docs later.

Objects

Camera

cam := InitCamera(lookFrom, lookAt, vup, aspectRatio, fieldOfView , apperture, focalDist)

Parameters	Description
lookFrom	Vector of dim-3 describing coordinates of camera lens
lookAt	Point ( i.e Vector dim-3) where camera is pointed
vup	Point defining direction of up direction for camera
aspectRatio	Ratio of heigt & width
fieldOfView	Camera field of views in degrees
apperture	Apperture of the camera lens
focalDist	Focal length of camera

Materials

• Metal

  mat := NewMetal(Albedo, fuzziness) , where Albedo is a vector of 3 dimension (r,g,b) denoting Albedo (in simpler words, color) of material and fuzziness is a float denoting fuzziness of metal's surface

• Lambertian

  mat := NewLambertian(Albedo) , where Albedo is a vector of 3 dimension (r,g,b) denoting Albedo (in simpler words, color) of material

• Dielectric

  Materials like glass, water etc.
  mat := NewDielectric(Ir) , where Ir denotes Refractive Index of the material

Hittable

• Sphere

sphr := NewSphere (center, radius, Material)

Parameters	Description
center	3 dimensional vector denoting the center of spehere
radius	float denotes radius
material	Metal, Lambertian or Dielectric

Todos / Improvements

• Use miltiple cpu cores while tracing.
• Add documentation
• Add .jpg or .png support