This is an 3D Rendering Engine written in C++. For the details of this project, please see report.pdf. See my blog post (in Chinese) for other interesting stories..

Features

• Phong Model and Monte Carlo Path Tracing Model
• rendering of plane, sphere and mesh
• read mesh from a simple obj file
• fast SAH-Based KDtree
• depth of field
• custom texture
• mesh smoothing
• mesh simplification with polygon reduction
• qt-based gui

Usage

Dependencies

• gcc >= 4.8
• OpenCV
• Magick++
• Qt4 (optional)

Compile

$ make	(command line)
$ make gui   (gui)

Use

Command line:

./ray-tracing <demo/small id>, show demo/small scene defined in main.cc.

The display is based on OpenCV, allowing keyboard control of the viewpoint:

• Left/Right Arrow - Orbit around the center.
• Up/Down Arrow - Rotate the output picture.

• < - Rotate viewpoint direction.

• = - - Zoom in/out.
• h j k l - Move viewpoint, keep direction.
• - Move focal plane (only available when DOF mode is on)

GUI:

GUI is only an objviewer with some simple control.

Examples

Obj and ground texture:

Depth of field (There is also a video in demo/small/):

Caustic using path tracing:

A Large scene: