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Bug 253

Summary:	[TV52016153] Having a Smith series, if you turn 3D on and you set a Zoom different...
Product:	VCL TeeChart	Reporter:	yeray alonso <yeray>
Component:	Series	Assignee:	Steema Issue Manager <issuemanager>
Status:	RESOLVED FIXED
Severity:	enhancement	CC:	david
Priority:	Normal
Version:	unspecified
Target Milestone:	---
Hardware:	All
OS:	All
Chart Series:	---	Delphi / C++ Builder RAD IDE Version:

Description yeray alonso 2013-11-20 10:34:43 EST

Having a Smith series, if you turn 3D on and you set a Zoom different than 100, the XCircleGrid isn't drawn correctly.
The customer suggests this is because DrawXCircle method uses Arc() function to draw the lines while DrawRCircle uses EllipseWithZ() function, that works fine.
http://www.teechart.net/support/viewtopic.php?f=3&t=13192
uses TeeSmith;
procedure TForm1.FormCreate(Sender: TObject);
begin
  Chart1.AddSeries(TSmithSeries).FillSampleValues();
  Chart1.View3D:=true;
  Chart1.View3DOptions.Zoom:=70;
end; [created:2012-04-12T17:27:32.000+01:00 reported by:yeray@steema.com reported in version:2012.05.120327 (TeeChart VCL)]

Comment 1 david berneda 2013-12-02 10:42:16 EST

Fixed.

New TCanvas3D.Arc overload method that accepts a "Z" coordinate as last parameter.

Smith series grid arcs are now correctly displayed when the chart is in 3D mode, but only for the "Orthogonal" perspective.

Chart1.View3D:=True;
Chart1.View3DOptions.Orthogonal:=True;

This already fixes drawing arcs with Zoom <> 100%.

For "pure 3D" (with rotation and elevation), the internal canvas code to draw arc would need to be rewritten, implemented as a loop of segments, which is not done yet.