About

A sweet Bezier surface converter.

Authors: Alec Mouri (cs184-cq) and Austin Chen (cs184-cn)

This program is written in Java, and was developed against the Windows and Android platforms.

Youtube

Features

• Conversion from Bezier patches to Polygon representations

• Rendering of objects using OpenGL

• Toggling of Uniform and Adaptive Tessellation

• Toggling between flat and smooth shading

• Input and output of .obj files

• Toggling between filled, wireframe, and hidden-line mode

• Rotation and Translation of objects

• Loading and control of multiple objects

• Vertex color shading of Gaussian curvatures

• An Android demo (.apk available here)

Command line arguments:

The first argument is always the input file and the second argument is always a subdivision parameter. Additional arguments:

• -a -- Specifies the use of adaptive tessellation.
• -o [file_name] -- Specifies the output of an .obj file to file_name

Controls:

• s -- Toggles between flat and smooth shading
• w -- Toggles between wireframe and filled mode
• h -- Toggles between hidden-line and filled mode
• Arrow keys -- Rotates the selected object
• Shift + arrow keys -- Translates the selected object
• +/- -- Zooms in and out
• v -- Selects the next object
• c -- Toggles coloring of Gaussian curvature

Scene format:

The .scene file format contains a list of files to be rendered. Each file corresponds to a separate object. Before each file is specified, translations and rotations with respect to the origin must be specified:

Example (test.scene):

translate 0 0 -10	# Translates Teapot1 -10 along the z-axis
rotate 0 0 0		# No rotation specified for Teapot1
teapot.bez			# Defines Teapot1
translate .5 .5 -15	# Translates Teapot2 .5 along the x-axis, .5 along the y-axis, -15 along the z-axis, 
rotate 90 90 90		# Rotate Teapot2 by 90 degress along each axis.
teapot.bez			# Defines Teapot2