95a2f54683
git-svn-id: https://svn.code.sf.net/p/apophysis7x/svn/trunk@1 a5d1c0f9-a0e9-45c6-87dd-9d276e40c949
141 lines
4.1 KiB
ObjectPascal
141 lines
4.1 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 varBlurCircle;
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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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TVariationBlurCircle = class(TBaseVariation)
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private
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VVAR4_PI: double;
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PI_4: 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 TVariationBlurCircle.Prepare;
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begin
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VVAR4_PI := VVAR * 4.0 / PI;
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PI_4 := PI / 4.0;
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end;
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procedure TVariationBlurCircle.CalcFunction;
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var
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x, y, absx, absy, side, perimeter, r, sina, cosa: double;
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begin
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x := 2.0 * random - 1.0;
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y := 2.0 * random - 1.0;
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absx := x; if absx < 0 then absx := absx * -1.0;
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absy := y; if absy < 0 then absy := absy * -1.0;
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if (absx >= absy) then
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begin
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if (x >= absy) then
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perimeter := absx + y
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else perimeter := 5.0 * absx - y;
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side := absx;
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end else
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begin
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if (y >= absx) then
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perimeter := 3.0 * absy - x
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else perimeter := 7.0 * absy + x;
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side := absy;
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end;
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r := VVAR * side;
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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 TVariationBlurCircle.Create;
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begin
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationBlurCircle.GetInstance: TBaseVariation;
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begin
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Result := TVariationBlurCircle.Create;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationBlurCircle.GetName: string;
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begin
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Result := 'blur_circle';
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TVariationBlurCircle.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 TVariationBlurCircle.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 TVariationBlurCircle.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 TVariationBlurCircle.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(TVariationBlurCircle), true, false);
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end. |