Reduce point count of a wire with linear segments

samscore's picture
samscore
Fri, 01/15/2010 - 03:00
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Hi,

can anybody tell me a suitable method to reduce the point cound of a wire. the wire is a polyline with many lines as edges. I want to input this wire and define a tolerance and get a new lwire with a lower point count and thus fewer linear segments...

Thanks
Regards Simon

Pawel's picture
Pawel
Fri, 01/15/2010 - 11:19

Hi Simon,

you can try:
- GeomAPI_Interpolate or
- GeomAPI_PointsToBSpline

Pawel

samscore's picture
samscore
Fri, 01/15/2010 - 13:36

Thanks, but it seems to me that this methods produce BSpline curves. I have a polyline as input and I need a polyline with reduced segment count as output. Thus I need a function with C0 continuity...

Regards
Simon

Pawel's picture
Pawel
Fri, 01/15/2010 - 21:39

Hi Simon,

take the first point and create a line to the second-next. If the distance between the skipped point and the line is smaller than the tolerance filter the point and go to the 'new second-next' to repeat. If not go to the skipped point.

This should work
Pawel