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Chapter 15. Special Effects > Using Envelopes

Using Envelopes

Envelopes are used to distort the shape of objects. An envelope is like a container placed around an object. The object is takes the shape of the container, becoming distorted in the process. You can shape an envelope with the Shape Tool, the Interactive Envelope Tool, and the nodes that appear around the envelope. The Interactive Envelope Tool works in conjunction with modes and options on the property bar.

To use the Interactive Envelope Tool to shape an object:

1.
Select the Interactive Envelope Tool from the Interactive Tool flyout (Figure 15.1).

Figure 15.1. The Interactive Envelope Tool is found on the Interactive Tool flyout.


2.
Select the object you want to shape.

A red-dashed rectangle appears around the selected object.

3.
Select an envelope mode by clicking one of the following property bar icons (Figures 15.2 and 15.3):

  • Straight-line. A straight line is maintained between each of the corner nodes.

  • Single-arc. A curved line is allowed between each pair of corner nodes.

  • Double-arc. A wavy line is allowed between each pair of corner nodes.

  • Unconstrained. You can edit the envelope path—dragging nodes and control points—as if it were an outline drawn with the Freehand or Bézier Tool.

    Figure 15.2. Set the mode for the envelope by clicking one of these property bar icons.


    Figure 15.3. These are the four envelope modes.


4.
Drag the nodes with the Interactive Envelope Tool until the envelope is the desired shape.


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