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130 lines
2.8 KiB
ObjectPascal
130 lines
2.8 KiB
ObjectPascal
unit MoveAvgUnit;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
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StdCtrls, contexthelpunit;
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type
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{ TMoveAvgFrm }
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TMoveAvgFrm = class(TForm)
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HelpBtn: TButton;
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ResetBtn: TButton;
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CancelBtn: TButton;
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ApplyBtn: TButton;
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OKBtn: TButton;
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ThetaList: TListBox;
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ThetaEdit: TEdit;
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Label2: TLabel;
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OrderEdit: TEdit;
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Label1: TLabel;
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procedure ApplyBtnClick(Sender: TObject);
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procedure FormShow(Sender: TObject);
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procedure HelpBtnClick(Sender: TObject);
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procedure OrderEditKeyPress(Sender: TObject; var Key: char);
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procedure ResetBtnClick(Sender: TObject);
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procedure ThetaEditKeyPress(Sender: TObject; var Key: char);
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procedure ThetaListClick(Sender: TObject);
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private
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{ private declarations }
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public
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{ public declarations }
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W : array[0..20] of double;
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order : integer;
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currentindex : integer;
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end;
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var
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MoveAvgFrm: TMoveAvgFrm;
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implementation
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{ TMoveAvgFrm }
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procedure TMoveAvgFrm.ResetBtnClick(Sender: TObject);
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VAR i : integer;
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begin
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OrderEdit.Text := '';
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ThetaEdit.Text := '';
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ThetaList.Clear;
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currentindex := 0;
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for i := 0 to 20 do W[i] := 1.0;
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end;
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procedure TMoveAvgFrm.ThetaEditKeyPress(Sender: TObject; var Key: char);
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var cellstring : string;
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begin
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if currentindex < 1 then exit;
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if ord(Key) <> 13 then exit;
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cellstring := 'Theta(' + IntToStr(currentindex + 1) + ') = ';
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cellstring := cellstring + ThetaEdit.Text;
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W[currentindex + 1] := StrToFloat(ThetaEdit.Text);
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end;
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procedure TMoveAvgFrm.ThetaListClick(Sender: TObject);
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VAR index : integer;
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begin
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index := ThetaList.ItemIndex;
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if index < 0 then exit;
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currentindex := index;
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ThetaEdit.Text := '1.0';
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ThetaEdit.SetFocus;
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end;
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procedure TMoveAvgFrm.FormShow(Sender: TObject);
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begin
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ResetBtnClick(self);
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end;
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procedure TMoveAvgFrm.HelpBtnClick(Sender: TObject);
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begin
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ContextHelpForm.HelpMessage((Sender as TButton).tag);
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end;
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procedure TMoveAvgFrm.ApplyBtnClick(Sender: TObject);
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var
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sum : double;
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i : integer;
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cellstring : string;
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begin
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ThetaList.Clear;
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sum := W[0];
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for i := 1 to order do sum := sum + (2.0 * W[i]);
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for i := 0 to order do
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begin
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W[i] := W[i] / sum;
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cellstring := 'Theta(' + IntToStr(i+1) + ') = ';
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cellstring := cellstring + FloatToStr(W[i]);
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ThetaList.Items.Add(cellstring);
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end;
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end;
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procedure TMoveAvgFrm.OrderEditKeyPress(Sender: TObject; var Key: char);
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VAR cellstring : string;
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i : integer;
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begin
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if ord(Key) <> 13 then exit;
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ThetaList.Clear;
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order := StrToInt(OrderEdit.Text);
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for i := 1 to order do
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begin
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cellstring := 'Theta(' + IntToStr(i) + ')';
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ThetaList.Items.Add(cellstring);
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end;
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end;
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initialization
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{$I moveavgunit.lrs}
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end.
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