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Bug 153 - [TV52013260] I use the V8.03 beta ( and also the V8.02) and there is a problem in ...
Summary: [TV52013260] I use the V8.03 beta ( and also the V8.02) and there is a proble...
Status: CONFIRMED
Alias: None
Product: VCL TeeChart
Classification: Unclassified
Component: Other Components (show other bugs)
Version: unspecified
Hardware: All All
: Normal major
Target Milestone: ---
Assignee: Steema Issue Manager
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2008-07-22 13:38 EDT by narcís calvet
Modified: 2013-11-20 10:00 EST (History)
0 users

See Also:
Chart Series: ---
Delphi / C++ Builder RAD IDE Version:

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Description narcís calvet 2013-11-20 10:00:41 EST 
I use the V8.03 beta ( and also the V8.02) and there is a problem in the clipping routine with surface series when it is zoomed.
I have upload a pdf file as an example (Tchart V8 Clipping.pdf)

The Chart.clippoints is set to true. 

well, it might be that the clipping works as you expected, by in my and my customers opinion it works not correct. I have uploead a pdf-file with some explanations. In the upper chart you can clearly identity all peaks and valleys, in the lower chart (with your clipping scheme) it is impossible to identify anything.
Find attached a document and an example project showing this. Also attached 2 tee files from the client. One showing the unzoomed chart and the other with the zoomed surface.
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The issue is, in fact, to do with how teechart clips all series types, or more accurately, the paradigm which teechart follows to stop series painting outside of their designated areas. It is clear that the paradigm of using gdi/gdi+ clipping is not good for all situations, which means another paradigm will have to be ideated, created, implemented and tested. Of course this is possible, here assuming that the changes do not negatively impact the performance of series painting (which is unlikely), but is there time to get it all done before the suggested release date? [created:2008-07-22T12:38:28.000+01:00 reported by:narcis@steema.com reported in version:8.03 (TeeChart VCL)]