CONTENTS

Introduction to Expressions

Geometry

OTHER MATERIAL

Tables

Project Index

This page lists all of the projects in the site. Because each project is usually intended to illustrate a specific point, I strongly recommend you discussed. (I may eventually provide direct links to the projects themselves.)

 Wheel Basic algebra is used to create a realistic wheel animation. Discussed at: Ranges of Values Project files: Macintosh / Windows Interpolation Methods Simple project to illustrate the differences between the four interpolation methods provided by After Effects: linear(), ease(), ease_in() and ease_out(). Discussed at: Interpolation Methods Project files: Macintosh / Windows Scroll Project Simple use of the linear() interpolation method to emulate an interface-style scroll bar. Discussed at: Interpolation Methods Project files: Macintosh / Windows Distance Based Blur and Scale Expression controlling Fast Blur based on the proximity of a control layer. Same basic expression also applied to layer's scale parameter, for a different effect. Discussed at: Distances and Lengths Project files: Macintosh / Windows Trigonometric Functions Demo Demonstration of the relative values of the three 'core' trigonometric functions: sine, cosine and tangent. Drag a layer to specify an angle, and see the corresponding trigonometric values. Discussed at: Graphs: sine, cosine and tangent Project files: Macintosh / Windows Circular Motion Simple expression showing how to move a layer in a circle, using basic trigonometry. Discussed at: Circular Functions Project files: Macintosh / Windows Circular Placement Demonstation of a 'step-and-repeat' technique using an expression to position layers in a circle. Discussed at: Circular Functions Project files: Macintosh / Windows Spring Demonstrates of Simple Harmonic Motion, as it applies to a spring-like animation. Variations on this basic animation illustrate frequency and amplitude, as well as wave addition and multiplication. Point At Applying the inverse trigonometric function arctangent to find the angle of a vector (in this case, the vector between two positions). Discussed at: Inverse Functions Project files: Macintosh / Windows

Entire contents © 2001 JJ Gifford.