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MapMaskEdit and OpenGL
Posted: Tue Nov 04, 2008 3:38 pm
by 4206631
Hello.
Is there a bug revolving OpenGL an MapMaskedit i teeChart 7, and is it fixed in newer versions?
Posted: Tue Nov 04, 2008 4:13 pm
by narcis
Hi voltge00,
No, we have no bug logged about this. Could you please give us some more details about the problems you are having?
Thanks in advance.
Posted: Tue Nov 04, 2008 5:53 pm
by 4206631
Thanks Narcis for the quick reply, I´ve found a way around it.
But we have another problem. I´ll try to explain.
This is code we´re using.
Code: Select all
constructor TVerktygsForm.Create(AOwner: TComponent);
begin
inherited;
measurePointMapTipTool := TMarksTipTool.Create(Self);
with measurePointMapTipTool do begin
ParentChart := ChartPointMap;
Series := ChartPointMap.Series[2];
MouseAction := mtmMove;
Style := smsXY;
Active := True;
OnGetText := MeasurePointMapToolTipGetText;
end;
end;
procedure TVerktygsForm.MeasurePointMapToolTipGetText(
Sender: TMarksTipTool; var Text: String);
var
PointIndex : Integer;
myRect: TGridRect;
begin
with measurePointMapTipTool do begin
PointIndex := Series.GetCursorValueIndex;
Text := 'Point ' + IntToStr(PointIndex) + TeeLineSeparator + 'X = ' +
FloatToStrF(Series.YValue[PointIndex], ffFixed, 8, 4) + TeeLineSeparator + 'Y = ' +
FloatToStrF(Series.XValue[PointIndex], ffFixed, 8, 4);
end;
end;
This code works just fine with a 2D chart but when we´re trying to use it with a 3D chart and OpenGl nothing at all happens with version 8. With version 7 it works as long as the zoom or rotate are not used. I hope you can understand.
Thanks in advance.
Posted: Wed Nov 05, 2008 9:38 am
by narcis
Hi voltge00,
I could reproduce the issue here and added it (TV52013529) to the defect list to be fixed for next releases. I'm afraid this is because of problems converting 2D screen coordinates to OpenGL 3D coordinates as OpenGL doesn't provide methos for that. Also, I haven't been able to get this working with v7 in 2D OpenGL charts.
Posted: Wed Nov 05, 2008 10:28 am
by 4206631
Thanks Narcis.
So there is´nt any way of getting "mouse over" or "mouse click" to work on a series with OpenGL?
Thanks.
Posted: Mon Nov 10, 2008 1:55 pm
by narcis
Hi voltge00,
This is not possible for now but we are working in a new OpenGL rendering engine for the next TeeChart version where this should be supported.