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Home ChartPack Rot3D Events OnDataRendered
See also: OnBeforeRenderData, Events, TRenderEvent 

OnDataRendered


Unit:SDL_rot3d
Class: TRot3D
Declaration: OnDataRendered: TRenderEvent;
{ TRenderEvent = procedure (Sender: TObject; var Canvas: TCanvas) of object; }

The events OnDataRendered and OnBeforeRenderData provide a hook for adding user defined graphics to the 3D data display. The event OnDataRendered occurs after the data has been drawn. The variable parameter Canvas provides access to the canvas of the data area. Please note that the state of the canvas (e.g. the color of its pen, or the fill mode of the brush) depends on the graphics elements drawn before.

Example: Following is an example on how to implement user defined graphics on top of the Rot3D data. It displays the text HALLO in the middle of the 3D surface. 

procedure TForm1.Rot3D1DataRendered(Sender: TObject; var Canvas: TCanvas);
begin
Canvas.Brush.Style := bsClear;
Canvas.Font.Color := clRed;
Canvas.TextOut(Rot3D1.CentX, Rot3D1.CentY, 'HALLO');
end;

Last Update: 2008-Okt-29