121 lines
3.6 KiB
ObjectPascal
121 lines
3.6 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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Apophysis AV "Phoenix Edition" Copyright (C) 2021 Alice V. Koryagina
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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 varPreDisc;
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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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TVariationPreDisc = class(TBaseVariation)
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private
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vvar_by_pi: double;
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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 Prepare; 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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{ TVariationPreDisc }
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///////////////////////////////////////////////////////////////////////////////
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procedure TVariationPreDisc.Prepare;
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begin
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vvar_by_pi := vvar / PI;
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end;
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procedure TVariationPreDisc.CalcFunction;
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var
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r, sinr, cosr: double;
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begin
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SinCos(PI * sqrt(sqr(FTx^) + sqr(FTy^)), sinr, cosr);
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r := vvar_by_pi * arctan2(FTx^, FTy^);
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FTx^ := sinr * r;
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FTy^ := cosr * r;
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// FTz^ := VVAR * FTz^;
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end;
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///////////////////////////////////////////////////////////////////////////////
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constructor TVariationPreDisc.Create;
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begin
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationPreDisc.GetInstance: TBaseVariation;
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begin
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Result := TVariationPreDisc.Create;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationPreDisc.GetName: string;
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begin
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Result := 'pre_disc';
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TVariationPreDisc.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 TVariationPreDisc.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 TVariationPreDisc.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 TVariationPreDisc.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(TVariationPreDisc), false, false);
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end.
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