Next step is to add in triangles. From there we can go to meshes of triangles, and then render something a bit more interesting than a sphere... Triangles As with previous shapes to render a triangle we need to be able to calculate if a ray intersects it or not.

Transparency. This is similar to reflection, however instead of tracing a reflected ray away from the object we trace a transmitted ray into the object. Transmittance I accidentally added transmittance to the ray tracer when developing reflections; instead of using the reflected direction for the reflected ray I accidentally used

Next up is improving the shading model and adding reflections. Phong Reflection Model The Phong reflection model adds to Lambertian reflectance with a term for specular highlights, the sharp highlights you see on shiny surfaces. The equation for Phong reflectance is: \[ C = k_A C_A + \sum_{i} (k_D

To make things look a bit more 3D we need to have a more realistic shading model and add some lights. Types for Lighting Let's add some more types: * Light. Base class for all types of light. Stores the colour of the light (I'm not doing anything more complicated for

Now we have an framework in place we can start on the ray tracing itself. Types for Geometry First step is to add some types to handle geometry: * Point. Represents a point in three dimensions. * Vector. Represents a vector in three dimensions. Although very similar to a point as both

First step was to get a basic framework in place that can render an image and preview it in the GUI. I added a separate project for all the rendering code, keeping all the display stuff in the GUI project. Helps separate concerns and will make it easier to, for