Apple Color 1.0 User Manual download pdf (Page 226)

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226 Chapter 10 Secondaries

3 Click in the Geometry preview area to add control points outlining the feature you

want to isolate, then click on the first control point you created to close the shape and

finish adding points.

The shapes you draw in the Geometry room default to B-spline shapes, which use

control points that are unattached to the shape they create to push and pull the shape

into place (similarly to the B-splines used by the curve controls in the Primary In and

Out rooms). You can also change these shapes to simple polygons if you need a shape

with hard angles rather then curves, by clicking the Polygon button in the Shapes tab.

Note: If you’re not sure how many control points to add to create the shape you want,

don’t hesitate to create a few more then you think you’ll need. It’s easy to edit them

after they’re created, but you can’t add or remove control points to shapes that have

already been created.

4 If necessary, edit the shape to better fit the feature you’re trying to isolate by dragging

the control points to manipulate the shape.

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Apple Color 1.0 User Manual Page 226

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