RayTracer-C

Follow the book The Ray Tracer Challenge to build a 3D renderer

Build

1.cmake && make

The executables are placed in bin.

Chapter 1 Tuples, Points, and Vectors

Projectile cannon test: src/cannon_test

Chapter 2 Drawing on a Canvas

I implemented a simple char canvas, in OOP style. src/canvas/canvas.h Tried ncurses, maybe later for more sophisticated usage.

Chapter 3 Matrices

Currently using Apple's simd library.

Chapter 4 Matrix Transformations

src/geometry/transform.h

• Scaling
• Translate
• Shearing

Chapter 5 Ray-Sphere Intersections

src/geometry/sphere.h and src/ray/

Chapter 6 Light and Shading

• src/lights/: Light struct and lignting function
• src/colors/: RGB to Luma conversion
• src/canvas/: writeLumaPixels write char according to converted Luma index.
• src/ray_test.c: Light rendering on the sphere.

Chapter 7 Making a scene

• src/world/: A world and currently necessray methods

Chapter 8 Shadows

Implemented shadow rendering. Add ascii true color output in src/canvas/canvas.h

Chapter 9 Planes

• Refactor src/geometry to support OOP-style shape data struct.
• Implemented Plane type.

Chapter 10 Patterns

• src/geometry/pattern stripe, gradient, ring and checkboard.
• Use EPSILON to avoid acne. (From float point error)

Chapter 11 Reflections

• Adjust previous code to support reflection calculations and reflection color determination.
• Avoid infinite recursion.