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Bug 147

Summary:	[TV52012998] 3. When there is a flat region in the Contour plot, the flat sections...
Product:	VCL TeeChart	Reporter:	narcís calvet <narcis>
Component:	Series	Assignee:	Steema Issue Manager <issuemanager>
Status:	RESOLVED FIXED
Severity:	major	CC:	david
Priority:	Normal
Version:	unspecified
Target Milestone:	---
Hardware:	All
OS:	All
Chart Series:	---	Delphi / C++ Builder RAD IDE Version:
Attachments:	Contour filling problem (triangles)

Description narcís calvet 2013-11-20 10:00:14 EST

3. When there is a flat region in the Contour plot, the flat sections do not get painted in when the contours are filled. Applies to IsoSurface as well.

To reproduce, open the file "contours_not_filled_in_2D.tee" and enable the Filled property for the contour plot. There will be a 3x3 hole in the middle of the graph. To reproduce with IsoSurface, change the series type to IsoSurface.  [created:2008-04-23T10:58:46.000+01:00 reported by:narcis@steema.com reported in version:8.01 (TeeChart VCL)]

Comment 1 david berneda 2013-12-03 03:17:10 EST

Cannot reproduce the "flat sections dont get filled" problem, but there's a wrong painting in the attached *.tee example. 

(Some cells are half-painted as triangles instead of filling the cell completely)

Also there is a slight difference between Contour isolines (level lines) and the filling polygons, Contour lines have sometimes an extra interpolated point.

Comment 2 david berneda 2013-12-03 03:18:01 EST

Created attachment 39 [details]
Contour filling problem (triangles)

Comment 3 david berneda 2013-12-03 07:26:56 EST

Fixed the problem of half-filled cells (triangles).

Pending to improve the "matching" between contour lines and filling polygons, this issue can be closed.