65 lines
1.7 KiB
ObjectPascal
65 lines
1.7 KiB
ObjectPascal
unit BaseVariation;
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interface
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type
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TBaseVariation = class
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protected
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public
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vvar: double; // normalized interp coefs between variations
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FTx, FTy: ^double;
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FPx, FPy: ^double;
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class function GetName: string; virtual; abstract;
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class function GetInstance: TBaseVariation; virtual; abstract;
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class function GetNrVariables: integer; virtual;
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class function GetVariableNameAt(const Index: integer): string; virtual;
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function SetVariable(const Name: string; var value: double): boolean; virtual;
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function GetVariable(const Name: string; var value: double): boolean; virtual;
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procedure Prepare; virtual;
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procedure CalcFunction; virtual; abstract;
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end;
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TBaseVariationClass = class of TBaseVariation;
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implementation
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{ TBaseVariation }
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///////////////////////////////////////////////////////////////////////////////
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class function TBaseVariation.GetNrVariables: integer;
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begin
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Result := 0;
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TBaseVariation.GetVariable(const Name: string; var value: double): boolean;
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begin
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Result := False;
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TBaseVariation.SetVariable(const Name: string; var value: double): boolean;
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begin
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Result := False;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TBaseVariation.GetVariableNameAt(const Index: integer): string;
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begin
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Result := ''
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TBaseVariation.Prepare;
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begin
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end;
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///////////////////////////////////////////////////////////////////////////////
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end.
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