151 lines
4.2 KiB
ObjectPascal
151 lines
4.2 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 varCirclize;
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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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TVariationCirclize = class(TBaseVariation)
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private
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PI_4, hole: 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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///////////////////////////////////////////////////////////////////////////////
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procedure TVariationCirclize.Prepare;
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begin
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PI_4 := PI * 0.25;
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end;
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procedure TVariationCirclize.CalcFunction;
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var
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absx, absy, side, perimeter, r, sina, cosa: double;
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begin
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absx := abs(FTx^);
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absy := abs(FTy^);
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if (absx >= absy) then
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begin
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if (FTx^ >= absy) then
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perimeter := absx + FTy^
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else perimeter := 5.0 * absx - FTy^;
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side := absx;
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end else
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begin
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if (FTy^ >= absx) then
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perimeter := 3.0 * absy - FTx^
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else perimeter := 7.0 * absy + FTx^;
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side := absy;
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end;
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r := VVAR * (side + hole);
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SinCos(PI_4 * perimeter / side - PI_4, sina, cosa);
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FPx^ := FPx^ + r * cosa;
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FPy^ := FPy^ + r * sina;
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//FPz^ := FPz^ + vvar * FTz^;
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end;
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///////////////////////////////////////////////////////////////////////////////
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constructor TVariationCirclize.Create;
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begin
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hole := 0;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationCirclize.GetInstance: TBaseVariation;
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begin
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Result := TVariationCirclize.Create;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationCirclize.GetName: string;
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begin
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Result := 'circlize2';
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TVariationCirclize.GetVariableNameAt(const Index: integer): string;
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begin
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case Index Of
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0: Result := 'circlize2_hole';
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else
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Result := '';
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end;
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TVariationCirclize.SetVariable(const Name: string; var value: double): boolean;
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begin
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Result := False;
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if Name = 'circlize2_hole' then begin
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hole := Value;
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Result := True;
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end;
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TVariationCirclize.GetNrVariables: integer;
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begin
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Result := 1;
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TVariationCirclize.GetVariable(const Name: string; var value: double): boolean;
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begin
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Result := False;
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if Name = 'circlize2_hole' then begin
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Value := hole;
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Result := True;
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end;
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end;
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///////////////////////////////////////////////////////////////////////////////
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initialization
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RegisterVariation(TVariationClassLoader.Create(TVariationCirclize), false, false);
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end. |