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Origo of ellipse in EllipticalArc



 
 
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  #1  
Old October 15th, 2007, 12:35 PM posted to microsoft.public.visio.general
Anders
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Posts: 72
Default Origo of ellipse in EllipticalArc

Hi!

I need to calculate the origo of the ellipse that an EllipticalArc is drawn
from.

From the EllipticalArcTo geometry section i get.

x1, y1 - coordinates for starting point
x2, y2 - coordinates for control point
x3, y3 - coordinate for vertex point
alpha - angle of the ellipses local coordinate system to the global
coordinate system
D - ratio between major and minor axis

From these given values I need to calculate the global origo of the
EllipticalArcs ellipse.

BR
  #2  
Old October 15th, 2007, 02:04 PM posted to microsoft.public.visio.general
Paul Herber
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Posts: 1,732
Default Origo of ellipse in EllipticalArc

On Mon, 15 Oct 2007 04:35:02 -0700, Anders
wrote:

Hi!

I need to calculate the origo of the ellipse that an EllipticalArc is drawn
from.

From the EllipticalArcTo geometry section i get.

x1, y1 - coordinates for starting point
x2, y2 - coordinates for control point
x3, y3 - coordinate for vertex point
alpha - angle of the ellipses local coordinate system to the global
coordinate system
D - ratio between major and minor axis

From these given values I need to calculate the global origo of the
EllipticalArcs ellipse.


You may be able to find what you want he
http://mathworld.wolfram.com/Ellipse.html


--
Regards, Paul Herber, Sandrila Ltd.
Electronics for Visio http://www.electronics.sandrila.co.uk/
  #3  
Old October 15th, 2007, 03:04 PM posted to microsoft.public.visio.general
Anders
external usenet poster
 
Posts: 72
Default Origo of ellipse in EllipticalArc

Me and a guy here where I work was successful in solving it using Maple...

Thanks anyway!

"Paul Herber" wrote:

On Mon, 15 Oct 2007 04:35:02 -0700, Anders
wrote:

Hi!

I need to calculate the origo of the ellipse that an EllipticalArc is drawn
from.

From the EllipticalArcTo geometry section i get.

x1, y1 - coordinates for starting point
x2, y2 - coordinates for control point
x3, y3 - coordinate for vertex point
alpha - angle of the ellipses local coordinate system to the global
coordinate system
D - ratio between major and minor axis

From these given values I need to calculate the global origo of the
EllipticalArcs ellipse.


You may be able to find what you want he
http://mathworld.wolfram.com/Ellipse.html


--
Regards, Paul Herber, Sandrila Ltd.
Electronics for Visio http://www.electronics.sandrila.co.uk/

 




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