Canvas3D JS Library

Introduciton

Under Construction

People Working On This Project

• Catherine Leung
• Mark Paruzel (CodeBot)
• Andrew Smith

Downloads

NOTE: these downloads are mostly meant for in-house testing and not really polished. It may also only work on a specific platform only. please read the note regarding the download. Andrew's patch - this change to the canvas 3D extension allows the "simple" examples from Vlad's page to work with ati cards. This is intended for Windows only. Model viewer examples do not work yet.

Prototype

Canvas 3D API - Class Design

Math Operations

Vector Class

A Vector basically describes a direction in the form of X, Y, and Z coordinates of a 3D world. Basic 3D math cannot exist without the utilization of spatial coordinates which the Vector Class encapsulates. The Vector Class will have the following members within it:

• void Normalize() - Unit Normalization
• float Dot() - Dot Product
• float Length() - Length of Vector from (0, 0, 0)
• float LengthSquared() - Squared value of Length
• Vector Cross(Vector) - Cross Product
• Vector Multiply(Float) - Multiplication by a scalar
• Vector Divide(Float) - Division by a scalar
• Vector Subtract(Vector) - Subtraction of a Vector
• Vector Add(Vector) - Addition to a Vector
• bool Equals(Vector) - Equals Comparison

Matrix Class

A Matrix Class is necessary to provide Matrix operations such as rotation, translation, and scaling to any point in the 3D world. It is composed of a 4x4 matrix of floating point values that can be applied to any Matrix operation. The Matrix Class has the following members:

• void Identity() - Create Identity Matrix
• void Transpose() - Transpose a Matrix
• void Inverse() - Inverse Matrix Values
• float Multiply(Matrix) - Multiplication by Scalar
• float Divide(Matrix) - Division by Scalar
• Matrix Add(Matrix) - Addition of two Matrices
• Matrix Subtract(Matrix) - Subtraction of two Matrices
• Vector Multiply(Vector) - Matrix times a Vector
• Matrix Multiply(Matrix) - Matrix times a Matrix