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#COMS30115 coursework by @Michael-JB and @SSutherlandDeeBristol

Extensions

Raytracer

  • Phong Shading
  • Path Tracer
    • Imperfect reflections
  • Photon Mapper
    • Area lighting
    • Spot lighting
    • Reflections & mirrors
    • Refraction & glass
    • Soft shadows
  • Spheres
  • Object loading from .obj files
  • Full camera movement with LookAt

Rasteriser

  • Full homogenous clipping
  • Fan triangulation algorithm
  • Optimal triangulation algorithm
  • Object loading from .obj files
  • Full camera movement with LookAt

Raycaster

As well as extending the raytracer and rasteriser, we created a raycasting renderer. The ray- casting renderer is inspired by Wolfenstien 3D, building up a 3D scene from the intersection and distance data of rays cast in 2D space. The key features of our raycasting renderer are listed below.

  • Minimap
  • Fisheye Correction
  • Distance Shading
  • Floor and Sky
  • Full camera movement with LookAt

Gallery

Photon Mapper

Balls Render Balls Photon Map
Bunny Render Bunny Photon Map

Path Tracer

Tall Mirror Block Render

Phong Shading

Cornell Box Render

Rasteriser

A demonstration video can be viewed here.

Clipping to two planes Optimal triangulation

Raycaster

A demonstration video can be viewed here.

Snapshot 1 Snapshot 2

How To Run Code

Before running anything, navigate to the top level of the submission directory

cd submission

Photon Mapper

cd raytracer
make -B && ./Build/skeleton n r

where:

  • n is the integer number of photons to emit
  • r is the integer number of photons in radiance estimate

To start try:

  • n = 20000
  • r = 200

Increasing these values will give a nicer render but will significantly increase render time.

Path Tracer

cd pathtracer
make -B && ./Build/skeleton b n

where:

  • b is the integer number of bounces
  • n is the integer number of samples at each bounce

To start try:

  • b = 1
  • n = 32

Phong Shading

cd raytracer
make -B && ./Build/skeleton

Rasteriser

cd rasteriser
make −B && ./Build/skeleton t f s

where:

  • t is whether to triangulate (boolean; 0 or 1)
  • f is whether to fill - wireframe or solid (boolean; 0 or 1)
  • s is demo triangle or full scene (boolean; 0 or 1)

Try:

  • t = 1
  • f = 1
  • s = 1

Raycaster

cd raycaster
make -B && ./Build/skeleton w h

where:

  • w is the integer screen width in px
  • h is the integer screen height in px

Try:

  • w = 600
  • h = 600