Graphics and Animation on iOS by Vandad Nahavandipoor

Author:Vandad Nahavandipoor [Vandad Nahavandipoor]
Language: eng
Format: epub, pdf
Tags: COMPUTERS / Programming / Apple Programming
ISBN: 9781449305666
Publisher: O'Reilly Media
Published: 2011-04-26T16:00:00+00:00

Adding Shadows to Shapes

It is easy to draw shadows using Core Graphics. The graphics context is the element that bears the shadow. What that means is that you need to apply the shadow to the context, draw the shapes that need the shadow, and then remove the shadow from the context (or set a new context). We will see an example of this soon.

In Core Graphics, we can use two procedures to apply a shadow to a graphics context:

CGContextSetShadow procedure

This procedure, which creates black or gray shadows, accepts three parameters:

The graphics context on which the shadow has to be applied.

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