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unit Main;
{$mode objfpc}{$H+}
interface
uses
Classes, ComCtrls, ExtCtrls, Spin, StdCtrls, SysUtils, FileUtil, Forms,
Controls, Graphics, Dialogs, TAGraph, TASeries, TASources, TATools,
TATransformations, TACustomSeries;
type
{ TForm1 }
TForm1 = class(TForm)
btnAddSeries: TButton;
btnRefresh: TButton;
catOscillatorLinearAxisTransform1: TLinearAxisTransform;
cb3D: TCheckBox;
cbLineType: TComboBox;
cbRotated: TCheckBox;
cbSorted: TCheckBox;
ccsAvg: TCalculatedChartSource;
ccsDerivative: TCalculatedChartSource;
ccsSum: TCalculatedChartSource;
catOscillator: TChartAxisTransformations;
chOscillator: TChart;
chOscillatorLineSeries1: TLineSeries;
chPointers: TChart;
chFast: TChart;
chFastConstantLine1: TConstantLine;
chFastLineSeries1: TLineSeries;
ChartToolset1: TChartToolset;
ChartToolset1DataPointDragTool1: TDataPointDragTool;
ChartToolset1PanDragTool1: TPanDragTool;
ChartToolset1ZoomDragTool1: TZoomDragTool;
edTime: TEdit;
lblPointerSize: TLabel;
lblPointsCount: TLabel;
lcsOscillator: TListChartSource;
PageControl1: TPageControl;
Panel1: TPanel;
pnlPointers: TPanel;
RandomChartSource1: TRandomChartSource;
sePointerSize: TSpinEdit;
timOscilloscope: TTimer;
tsOscilloscope: TTabSheet;
tsPointers: TTabSheet;
tsFast: TTabSheet;
procedure btnAddSeriesClick(Sender: TObject);
procedure btnRefreshClick(Sender: TObject);
procedure cb3DChange(Sender: TObject);
procedure cbLineTypeChange(Sender: TObject);
procedure cbRotatedChange(Sender: TObject);
procedure cbSortedChange(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure PageControl1Change(Sender: TObject);
procedure sePointerSizeChange(Sender: TObject);
procedure timOscilloscopeTimer(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.lfm}
uses
LCLIntf, TAChartUtils, TATypes, TAEnumerators;
type
TLineSeriesEnum =
specialize TFilteredChartSeriesEnumeratorFactory<TLineSeries>;
{ TForm1 }
procedure TForm1.btnAddSeriesClick(Sender: TObject);
const
POINTS_PER_SERIE = 50000;
var
s: TLineSeries;
i, j: Integer;
begin
for i := 1 to 10 do begin
s := TLineSeries.Create(chFast);
s.SeriesColor := clRed;
for j := 1 to POINTS_PER_SERIE do
s.AddXY(j, Random * 5 + chFast.SeriesCount * 10);
chFast.AddSeries(s);
end;
lblPointsCount.Caption :=
Format('Points: %.2e', [chFast.SeriesCount * POINTS_PER_SERIE * 1.0]);
end;
procedure TForm1.btnRefreshClick(Sender: TObject);
var
t: TDateTime;
begin
t := Now;
chFast.Refresh;
edTime.Text := FormatDateTime('s.zzz', Now - t) + ' s';
end;
procedure TForm1.cb3DChange(Sender: TObject);
var
ls: TLineSeries;
begin
for ls in TLineSeriesEnum.Create(chFast) do
ls.Depth := 15 - ls.Depth;
end;
procedure TForm1.cbLineTypeChange(Sender: TObject);
var
ls: TLineSeries;
begin
for ls in TLineSeriesEnum.Create(chFast) do
ls.LineType := TLineType(cbLineType.ItemIndex);
end;
procedure TForm1.cbRotatedChange(Sender: TObject);
var
ls: TLineSeries;
begin
for ls in TLineSeriesEnum.Create(chFast) do begin
ls.AxisIndexY := Ord(cbRotated.Checked);
ls.AxisIndexX := 1 - ls.AxisIndexY;
end;
end;
procedure TForm1.cbSortedChange(Sender: TObject);
var
ls: TLineSeries;
begin
for ls in TLineSeriesEnum.Create(chFast) do
if ls.Source is TListChartSource then
ls.ListSource.Sorted := cbSorted.Checked;
end;
procedure TForm1.FormCreate(Sender: TObject);
var
st: TSeriesPointerStyle;
ls: TLineSeries;
s: ShortString;
begin
for st in TSeriesPointerStyle do begin
ls := TLineSeries.Create(Self);
ls.LinePen.Color := clGreen;
ls.ShowPoints := true;
ls.Pointer.Pen.Color := clRed;
ls.Pointer.Style := st;
ls.AddXY(1, Ord(st));
Str(st, s);
ls.AddXY(10, Ord(st), s, clGreen);
ls.AddXY(19, Ord(st));
ls.Marks.Visible := true;
ls.Marks.Style := smsLabel;
ls.Marks.Distance := 4;
chPointers.AddSeries(ls);
end;
end;
procedure TForm1.PageControl1Change(Sender: TObject);
begin
timOscilloscope.Enabled := PageControl1.ActivePage = tsOscilloscope;
end;
procedure TForm1.sePointerSizeChange(Sender: TObject);
var
ls: TLineSeries;
begin
for ls in TLineSeriesEnum.Create(chPointers) do
with ls.Pointer do begin
HorizSize := sePointerSize.Value;
VertSize := sePointerSize.Value;
end;
end;
procedure TForm1.timOscilloscopeTimer(Sender: TObject);
var
rp: TChartRenderingParams;
begin
rp := chOscillator.RenderingParams;
with chOscillatorLineSeries1 do begin
Add(Sin(GetXMax / 20) + Random - 0.5);
if Count > 20 then
ListSource.Delete(0);
// Allow to zoom into various parts of the chart
// while preserving "oscilloscope" behaviour.
catOscillatorLinearAxisTransform1.Offset := -GetXMin;
end;
// Transformation change resets logical extent.
// We know the old extent is safe to keep, so restore it.
chOscillator.RenderingParams := rp;
end;
end.
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