Chapter 4

Kinematics

1       Introduction

Kinematics, the fourth dimension of virtual spaces, goes beyond visual relationships between objects in motion. Object manipulations that take place in a dynamic space may involve obstacles, fixed objects, physics, hinges, and springs. Spatial relationships between moving objects can extend through space and time and affect many more levels than the sum of each moving object. For example, the motion of a ball depends on multiple parameters including elasticity of the ball, friction of the floor, and obstacles located on the trajectory of the ball. This chapter explains how to set objects in motion and how to create dynamic relationships between objects.

1.1     Kinematics

Kinematics shows how objects ...

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