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Re: Elliptical Arc Question

From: Goessner / MecXpert <goessner@mecxpert.de>
Date: Sun, 28 Apr 2002 12:54:58 +0200
Message-ID: <001701c1eea4$49978ac0$fe78a8c0@alpha>
To: "Kevin Lindsey" <kevin@kevlindev.com>
Cc: <www-svg@w3.org>
kevin,

> Stefan,
>
> > > > Section F.6.2 of the SVG 1.0 Specification effectively states that
an
> > > > elliptical arc whose endpoints, (x1,y1) and (x2, y2), are identical
> will
> > > > not be rendered.  This behavior surprised me since I expected the
> > > > following cases:
> [snip]
>
> > another solution might be to use the path's current directionality (s.
> spec.
> > app. F5, markers, directionality and zero length path segments) so, that
> the
> > circle is tangential to the path's current tangent in that point.
>
> Just to add my two cents...I think the elliptical arc path's
x-axis-rotation
> parameter is already sufficient to specify the ellipse's orientation.  It
> specifies the angle of the normal of an ellipse at the control point.
> Adjusting this parameter rotates the ellipse about the control point.
>
> Kevin

.. hmm, that's indeed the way with maximum of flexibility .. great aspect.
maybe there is a way to have the best of both worlds. optimal user control
*and* automatically tangential alignment.
--
stefan
Received on Sunday, 28 April 2002 06:59:10 GMT

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