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Everything about using Libraries and Library Parts - Doors/Windows/Objects/Stairs etc. (Example: How can I display a Transom above my Door?)

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By Pertti Pääsky
#303880
Hi all Polygon Operation masters.
I tried GDL to Clip a polyline with another polyline but failed, Polyline offset works fine yet. Some other options also failed, please check the attacment.
This function is great, but I can´t get it work.
Attachments
PolyCut object
(3.17 KiB) Downloaded 12 times
By MADheikki
#310460
The problem is that you forgot to differentiate between polylines and polygons. The calls that save them should go something like this:
Code: Select all
PREPAREFUNCTION ch, "StorePolyline", "polyline1", nVertices4,vertArr4,defaultInhEdgeInfo, inhEdgeInfos
dim cont1[]
cont1[1]=vardim1(vertArr)  ! points to the last vertex of the contour
! Store = Store _polygon_
PREPAREFUNCTION ch, "Store", "poly1", nVertices,1,vertArr,cont1 

Similarly you need two versions of "draw respolyarr" - one that draws polylines that OffsetPolyline and ClipPolyline produce (with GetPolylineVertices), and another to draw the polygons that PolyCut and CopyPolygon produce:
Code: Select all
! GetVertices = Get _polygon_ vertices
nVertices = CALLFUNCTION (ch, "GetVertices", polylineID, resPolylineVertices) 
Polygon Operations sure is full of gotchas...