User Guide

Canvas 12 User Guide
1. Select the lens object and choose a viewpoint.
2. In the Properties bar, click the Advanced button.
3. In the SpriteEffects palette, select Create Object at ViewPoint from the palette menu.
You can modify the inks and strokes of the new object and also apply any vector effect.
Lenses and stacking order
The view through a lens depends on the stacking order of the lens, as well as the position of the
viewpoint.
Only objects that are behind a lens in the stacking order can be seen through the lens. A lens and its
viewpoint are at the same level in the stacking order.
Use the stacking order to change a lens view. Send a lens to the back of the stack so nothing
appears in it. Bring it to the front so all the objects at the viewpoint appear in the lens.
Due to the stacking order, objects that you create after you create a lens cannot appear in the lens.
Also, objects that you move to the front of the stack after you create a lens cannot appear in the lens.
You can use a lens to display layered views; e.g., you can draw a map and create a lens to show a
close-up of an area. If you add text after you create the lens, the text is higher in the stacking order.
The text will not appear in the lens close-up of the map.
Freezing a lens
Select the Frozen check box in the SpriteEffects palette to freeze the lens object's current view; i.e.,
the view won’t change unless you deselect the Frozen check box. If you change the fill color of an
object, the lens will not show the change. Deselect the Frozen check box and Canvas updates the lens
view.
Selecting Frozen overrides a lens relative viewpoint; the lens will show the same view after being
moved. If you deselect Frozen, the lens will display the new viewpoint location.
The Frozen check box is only available if you select Grayscale, RGB, or CMYK from the Mode
menu. If None is selected, the Frozen check box is not available.
Freezing a lens can avoid slow performance when you edit objects shown in a lens. When you finish
editing, select the lens and deselect the Frozen check box to update the viewpoint.
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