Polygon creation in OpenModelica

Question

While creating a regular polygon in the Icon/Diagram Layer in OpenModelica, I can understand that the origin is the centre/centroid of the polygon and the co-ordinates of the points of the polygon are calculated using the origin as a reference.

Can anyone tell me how the origin co-ordinate and the point co-ordinates of an irregular ploygon are generated in OpenModelica?

score 2 · Accepted Answer · answered Jul 05 '14 at 00:49

2

Each graphic shape has a bounding rectangle http://qt-project.org/doc/qt-4.8/qgraphicsitem.html#boundingRect. The center of this rectangle is used as an origin.

What do you want to achieve?

answered Jul 05 '14 at 00:49

Adeel Asghar

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I just just curious to know how it works. I thought that the centre was the centroid of the polygon. But when I calculated the distance of the points of the polygon from the centre, all the distances were different. – MSK Jul 07 '14 at 04:23

Polygon creation in OpenModelica

1 Answers1