#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