119 lines
3.4 KiB
ObjectPascal
119 lines
3.4 KiB
ObjectPascal
{
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Apophysis Copyright (C) 2001-2004 Mark Townsend
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Apophysis Copyright (C) 2005-2006 Ronald Hordijk, Piotr Borys, Peter Sdobnov
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Apophysis Copyright (C) 2007-2008 Piotr Borys, Peter Sdobnov
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Apophysis "3D hack" Copyright (C) 2007-2008 Peter Sdobnov
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Apophysis "7X" Copyright (C) 2009-2010 Georg Kiehne
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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}
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unit varFoci;
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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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TVariationFoci = class(TBaseVariation)
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public
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constructor Create;
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class function GetName: string; override;
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class function GetInstance: TBaseVariation; override;
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function GetNrVariables: integer; override;
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function GetVariableNameAt(const Index: integer): string; override;
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function SetVariable(const Name: string; var value: double): boolean; override;
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function GetVariable(const Name: string; var value: double): boolean; 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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///////////////////////////////////////////////////////////////////////////////
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procedure TVariationFoci.CalcFunction;
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var
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expx, expnx, siny, cosy, tmp: double;
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begin
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expx := exp(FTx^) * 0.5;
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expnx := 0.25 / expx;
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sincos(FTy^, siny, cosy);
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tmp := ( expx + expnx - cosy );
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if (tmp = 0) then tmp := 1e-6;
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tmp := VVAR / tmp;
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FPx^ := FPx^ + (expx - expnx) * tmp;
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FPy^ := FPy^ + siny * tmp;
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FPz^ := FPz^ + vvar * FTz^;
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end;
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///////////////////////////////////////////////////////////////////////////////
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constructor TVariationFoci.Create;
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begin
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationFoci.GetInstance: TBaseVariation;
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begin
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Result := TVariationFoci.Create;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationFoci.GetName: string;
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begin
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Result := 'foci';
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TVariationFoci.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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function TVariationFoci.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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function TVariationFoci.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 TVariationFoci.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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initialization
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RegisterVariation(TVariationClassLoader.Create(TVariationFoci), true, false);
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end.
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