5ml User's Guide

5ml User's Guide
Figure 13-5: Decreasing the Perspective Value to 20px to Intensify the 3D Effect.
Perspective Origin Properties
By default, the vanishing point for a 3D Stage element is positioned at the center of the element. The vanishing point is
represented by a Perspective Origin X axis (horizontal axis) value of 50% and a Perspective Origin Y axis (vertical axis)
vaule of 50%. The 50% Perspective Origin X and Perspective Origin Y values represent the midway points for the X and Y
axises. (Think of an imaginary X and Y axis; a 50% value for X and a 50% value for Y is equivalent to the (0,0) value.
The X and Y Perspective Origin values have a range from 0% to 100%.You can change the position of the vanishing point
by changing the Perspective Origin values. Changing the X Perspective Origin moves the vanishing point along the X axis.
A value 50 moves it to the right. Changing the Y Prespective Origin moves the
vanishing point along the Y axis. A value 50 moves it to the up.
The 3D Transformations properties for all elements within a 3D Stage element are based on the 3D Stage's Perspective
and Perspective Origin values. For example, an element within the 3D Stage element uses the 3D Stage's Perspective
Origin value as its starting point for evaluating its own perspective origin. If you keep the element at it default value,
50%, then it will share the same vanishing point as the 3D Stage element, as shown with rectangle A in Figure 13-6 on
page 318.
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