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RE: [Devel] 'tension' in splines, Hermite Splines [Re: Rendering (by Fre


From: Graham Asher
Subject: RE: [Devel] 'tension' in splines, Hermite Splines [Re: Rendering (by FreeType) and hinting of Latin small 'a']
Date: Wed, 11 Sep 2002 17:39:11 +0100

On the subject of tension in splines, it is interesting to read Donald
Knuth's 'The METAFONTBook', and/or the METAFONT source code ('METAFONT: The
Program'). The METAFONT language has operators for specifying the tension,
tangents at start and end, etc., of spline curves, which are represented as
cubic Beziers. The operators change the way the control points are
calculated.

Graham Asher




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