yuanpeizhao/general-linear-camera-model

CS 535 Assignment 1 - Implement a General Linear Camera (GLC) model with simple ray tracing

General-Linear-Camera-model

CS 535 Assignment 1 - This project implement a General Linear Camera (GLC) model with freeglut

Object

This program defined hitable virtual class which derives two classes, sphere and triangleMesh. This two classes are defined in sphere.h and triangleMesh.h.

Ray-object intersection

The sphere class and the triangleMesh class have different implementation of the ray-object intersection method which is written in hit() method. You can check them in the header file mentioned above. This part referred to these resources:

• Ray tracing in a weekend, Peter Shirley
• IntersectTriangle demo in DirectX SDK

GLC Definition

The GLC is defined in GLCcamera.h as a class. It is defined by 6 points in 2 planes. It also has functions to set the rotation matrix of the camera.

GLC Rendering

The result for the GLC is saved as a .jpg image which is then read as a texture to render on the screen. You can check the LoadTexture() and WriteTexture() in main.cpp for more details.

GUI

• You can press and hold the mouse left button and move the mouse to rotate the camera, just like in fps games. If you feel strange with the X-axis or Y-axis movement, you can also right click the mouse and choose “reverse X-axis” or “reverse Y-axis”
• You can right click the mouse to choose camera modes from “pinhole” “orthographic” and “XSlit” (XSlit is as defined in the GLC paper).

Extra

• Besides of using triangle meshes, this program generates sphere objects.
• This program uses ray-casting to imitate the diffuse light, which can also generate shadows.