Steema Issues Database

Note: This database is for bugs and wishes only. For technical support help, if you are a customer please visit our online forums;
otherwise you can use StackOverflow.
Before using this bug-tracker we recommend a look at this document, Steema Bug Fixing Policy.



Bug 2527 - TPieSeries.ExplodeBiggest = High CPU
Summary: TPieSeries.ExplodeBiggest = High CPU
Status: CONFIRMED
Alias: None
Product: VCL TeeChart
Classification: Unclassified
Component: Series (show other bugs)
Version: 32.210430
Hardware: PC Windows
: High major
Target Milestone: ---
Assignee: Steema Issue Manager
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-05-04 04:01 EDT by fabrice
Modified: 2022-09-23 08:02 EDT (History)
1 user (show)

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

Attachments
HighCPU with ExplodeBiggest (30.15 KB, application/x-zip-compressed)
2022-05-04 04:01 EDT, fabrice 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description fabrice 2022-05-04 04:01:35 EDT 
Created attachment 1004 [details]
HighCPU with ExplodeBiggest

Tested on Teechart Pro v2021.32.210430 32 bits with Delphi 10.3

There is an old bug (reproduced in old version) when in a TPieSeries, which contain a certain number of records, if you set ExplodeBiggest for example :
ExplodeBiggest = 20
=> This take a lot of CPU to display/redraw Teechart

Easy to reproduce full sample in attachment.
Comment 1 yeray alonso 2022-09-23 08:02:52 EDT 
What seems to affect the performance here is the shadow when having a TPieSeries with a big number of values and an exploded slice.

Try hiding the shadow and please confirm if it helps.