Posts » Tagged ‘howto’

Rotating a Polygon: Drawing a Directional Arrow Monday, October 6th, 2008 | 1 Comment »

I needed to draw an arrowhead to show the direction of lines drawn on the canvas. When I searched for this I didn’t find any complete solutions, so I wanted to share mine. Includes useful canvas routines to translate and rotate a data structure representing the polygon coordinates.

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Using the Asterisk Database: Custom Incoming CallerID Name Lookup Sunday, September 14th, 2008 | 1 Comment »

Asterisk knows the CallerID information of the calling channel and can arbitrarily set this information when a call is moving through the dialplan. In this article we use these factors to our advantage to create a custom database of CallerID text for phone numbers we know. Provides a thorough introduction to working with the Asterisk Database, and creates a foundation for future articles on the topic.

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