mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-05-13 07:43:03 +02:00
104 lines
2.4 KiB
ObjectPascal
104 lines
2.4 KiB
ObjectPascal
unit Main;
|
|
|
|
{$mode objfpc}{$H+}
|
|
|
|
interface
|
|
|
|
uses
|
|
ComCtrls, ExtCtrls, Forms, StdCtrls, TAGraph, TASeries, TASources,
|
|
TATransformations, Classes;
|
|
|
|
type
|
|
|
|
{ TForm1 }
|
|
|
|
TForm1 = class(TForm)
|
|
catTAutoAutoScaleAxisTransform1: TAutoScaleAxisTransform;
|
|
catTAutoScaleAxisTransform1: TAutoScaleAxisTransform;
|
|
catTAuto: TChartAxisTransformations;
|
|
cbAuto: TCheckBox;
|
|
ChartLog: TChart;
|
|
cfsLog: TFuncSeries;
|
|
cbLog: TCheckBox;
|
|
ChartTWinterBar: TBarSeries;
|
|
clsLogPoints: TLineSeries;
|
|
ChartT: TChart;
|
|
catLog: TChartAxisTransformations;
|
|
ChartAxisTransformations1LinearAxisTransform2: TLinearAxisTransform;
|
|
ChartAxisTransformations1LogarithmAxisTransform1: TLogarithmAxisTransform;
|
|
catT: TChartAxisTransformations;
|
|
catTFahrToCel: TLinearAxisTransform;
|
|
ChartCustomMarks: TChart;
|
|
ChartCustomMarksBarSeries1: TBarSeries;
|
|
ChartTSummer: TLineSeries;
|
|
ChartTWinterLine: TLineSeries;
|
|
lcsMarks: TListChartSource;
|
|
PageControl1: TPageControl;
|
|
pnlLogControls: TPanel;
|
|
pnlAutoControls: TPanel;
|
|
rcsTSummer: TRandomChartSource;
|
|
rcsTWinter: TRandomChartSource;
|
|
lsLinear: TTabSheet;
|
|
tsLog: TTabSheet;
|
|
tsCustomMarks: TTabSheet;
|
|
procedure cbAutoChange(Sender: TObject);
|
|
procedure cbLogChange(Sender: TObject);
|
|
procedure ChartLogFuncSeries1Calculate(const AX: Double; out AY: Double);
|
|
procedure FormCreate(Sender: TObject);
|
|
procedure TChartAxisList1MarkToText(var AText: String; AMark: Double);
|
|
end;
|
|
|
|
var
|
|
Form1: TForm1;
|
|
|
|
implementation
|
|
|
|
uses
|
|
Math;
|
|
|
|
{$R *.lfm}
|
|
|
|
function MyFunc(AX: Double): Double;
|
|
begin
|
|
Result := Power(10, AX) + 3;
|
|
end;
|
|
|
|
{ TForm1 }
|
|
|
|
procedure TForm1.cbAutoChange(Sender: TObject);
|
|
begin
|
|
catTAutoAutoScaleAxisTransform1.Enabled := cbAuto.Checked;
|
|
catTAutoScaleAxisTransform1.Enabled := cbAuto.Checked;
|
|
end;
|
|
|
|
procedure TForm1.cbLogChange(Sender: TObject);
|
|
begin
|
|
ChartAxisTransformations1LogarithmAxisTransform1.Enabled := cbLog.Checked;
|
|
end;
|
|
|
|
procedure TForm1.ChartLogFuncSeries1Calculate(const AX: Double; out AY: Double);
|
|
begin
|
|
AY := MyFunc(AX);
|
|
end;
|
|
|
|
procedure TForm1.FormCreate(Sender: TObject);
|
|
var
|
|
i: Integer;
|
|
x: Double;
|
|
begin
|
|
for i := 0 to 50 do begin
|
|
with cfsLog.Extent do
|
|
x := i / 50 * (XMax - XMin) + XMin;
|
|
clsLogPoints.AddXY(x + Random - 0.5, MyFunc(x) + Random - 0.5);
|
|
end;
|
|
end;
|
|
|
|
procedure TForm1.TChartAxisList1MarkToText(var AText: String; AMark: Double);
|
|
begin
|
|
if AMark < 15 then
|
|
AText := '*' + AText + '*';
|
|
end;
|
|
|
|
end.
|
|
|