DPS906 Lecture 9

Linear Motion

How do we give realistic motion to our game models?

Linear Motion is motion in a straight line.

Fundamentals Units

• time - measured in seconds unless otherwise stated
• length - in meters unless otherwise stated

Particle Motion

• The mass of this object is so small as to have no effect on motion

Frame of Reference

• If you draw a picture of the moon moving around the earth, the picture is different than if you draw a picture of the moon moving around the earth while moving around the sun.

Scalar vs Vectors

• measurement unit with no direction involved
• vectors are scalars + direction

displacement = endposition - start position (change in position, directional)
(average) velocity : change in position over a unit of time (the bigger the time, the more inaccurate the calc... the CPU controls the time, we have no control).

velocity = total displacement / total time;