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| unit UHorlogeArc;
interface
uses
System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs, FMX.StdCtrls,
FMX.Controls.Presentation, FMX.Edit, FMX.Objects;
type
TForm3 = class(TForm)
Timer1: TTimer;
Arc1: TArc;
Edit1: TEdit;
btnarc: TButton;
procedure btnarcClick(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
private
{ Déclarations privées }
Increment: Integer;
PotentialEnergy: array[0..15] of Single;
ReverseMotion : Boolean;
RotationSpeed : Single;
procedure SetArray(var aData: array of Single; const aSource: array of Single);
public
{ Déclarations publiques }
end;
var
Form3: TForm3;
implementation
{$R *.fmx}
procedure TForm3.SetArray(var aData: array of Single; const aSource: array of Single);
var
I: Integer;
begin
for I := Low(aSource) to High(aSource) do
begin
aData[I] := aSource[I];
end;
end;
procedure TForm3.btnarcClick(Sender: TObject);
begin
SetArray(PotentialEnergy, [23, 40, 39, 31, 23, 18, 15, 13, 11, 9, 7, 6, 5, 4, 4]);
Increment := -1;
ReverseMotion := False;
arc1.StartAngle := 0;
arc1.EndAngle := 20;
RotationSpeed := strtoint(edit1.text); // Degrees per 0.1 second
timer1.Enabled := True;
end;
procedure TForm3.Timer1Timer(Sender: TObject);
begin
if not ReverseMotion then
begin
Inc(Increment);
arc1.EndAngle := arc1.EndAngle + PotentialEnergy[Increment];
arc1.StartAngle := arc1.StartAngle + RotationSpeed;
end
else
begin
Inc(Increment);
arc1.StartAngle := arc1.StartAngle + PotentialEnergy[Increment] + RotationSpeed;
arc1.EndAngle := arc1.EndAngle - PotentialEnergy[Increment];
end;
if (Increment > 10)then
begin
ReverseMotion := not ReverseMotion;
Increment := -1;
end;
end;
end. |
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