[mapguide-users] MapGuide geometries

[Traian Stanev]

MapGuide itself is also capable of combinations of elliptical arcs and cubic and quadratic beziers splines. Since the code is a leftover from an old real-time graphics engine, circular arcs are approximated by elliptical arcs which are in turn approximated by cubic beziers during tesselation (using a forward differencing algorithm). 
Not terribly useful now, since these geometries can't be expressed by FDO geometry streams, but in case you ever need to render font outlines or some other complex stuff, look in LineBuffer.cpp...
 
Traian

	-----Original Message----- 
	From: Haris Kurtagic [mailto:haris at sl-king.com] 
	Sent: Tue 9/12/2006 7:40 PM 
	To: users at mapguide.osgeo.org 
	Cc: 
	Subject: [mapguide-users] MapGuide geometries
	
	
	I find this interesting.
	I was working on MapGuide geometries capabilities and I find that MapGuide besides of standard geometries is capable of displaying
	curve lines and curve polygons.
	 
	Here is example: http://www.sl-king.com/fdooracle/mapguidecurves.jpg
	 
	I used data from Oracle and I was very pleased how well it works. I could map almost all Oracle geometries to MapGuide geometries.
	Multi Geometry (in one record, collection in Oracle ) is not yet supported and Oracle circle type is not ( but in provider I simulated it with two arcs).
	I think that also Oracle oriented point is not supported.
	 
	Well done Autodesk MapGuide team!
	 
	Haris
	 

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