67 lines
1.4 KiB
ObjectPascal
67 lines
1.4 KiB
ObjectPascal
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unit VarTest;
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interface
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uses
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BaseVariation, XFormMan;
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type
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TVariationTest = class(TBaseVariation)
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public
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class function GetName: string; override;
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class function GetInstance: TBaseVariation; override;
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procedure CalcFunction; override;
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end;
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implementation
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uses
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math;
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{ TVariationTest }
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///////////////////////////////////////////////////////////////////////////////
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procedure TVariationTest.CalcFunction;
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const
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EPS = 1E-10;
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var
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r : double;
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// dx, dy, dx2: double;
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Angle: double;
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begin
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r := sqrt(FTx^ * FTx^ + FTy^ * FTy^);
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if (FTx^ < -EPS) or (FTx^ > EPS) or (FTy^ < -EPS) or (FTy^ > EPS) then
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Angle := arctan2(FTx^, FTy^)
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else
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Angle := 0.0;
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Angle := Angle + Max(0, (3 - r)) * sin(2 * r);
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// r:= R - 0.04 * sin(6.2 * R - 1) - 0.008 * R;
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FPx^ := FPx^ + vvar * r * cos(Angle);
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FPy^ := FPy^ + vvar * r * sin(Angle);
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// FPx^ := FPx^ + vvar * FTx^;
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// FPy^ := FPy^ + vvar * FTy^;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationTest.GetInstance: TBaseVariation;
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begin
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Result := TVariationTest.Create;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationTest.GetName: string;
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begin
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Result := 'test';
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end;
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///////////////////////////////////////////////////////////////////////////////
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initialization
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RegisterVariation(TVariationTest);
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end.
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