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{
Apophysis Copyright (C) 2001-2004 Mark Townsend
Apophysis Copyright (C) 2005-2006 Ronald Hordijk, Piotr Borys, Peter Sdobnov
Apophysis Copyright (C) 2007-2008 Piotr Borys, Peter Sdobnov
Apophysis "3D hack" Copyright (C) 2007-2008 Peter Sdobnov
Apophysis "7X" Copyright (C) 2009-2010 Georg Kiehne
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
}
unit varCrop;
interface
uses
BaseVariation, XFormMan;
type
TVariationCrop = class(TBaseVariation)
const
n_x0 : string = 'crop_left';
n_y0 : string = 'crop_top';
n_x1 : string = 'crop_right';
n_y1 : string = 'crop_bottom';
n_s : string = 'crop_scatter_area';
n_z : string = 'crop_zero';
n : string = 'crop';
private
x0, y0, x1, y1, s, w, h: double;
_x0, _y0, _x1, _y1: double;
z: integer;
public
constructor Create;
class function GetName: string; override;
class function GetInstance: TBaseVariation; override;
function GetNrVariables: integer; override;
function GetVariableNameAt(const Index: integer): string; override;
function SetVariable(const Name: string; var value: double): boolean; override;
function GetVariable(const Name: string; var value: double): boolean; override;
function ResetVariable(const Name: string): boolean; override;
procedure Prepare; override;
procedure CalcFunction; override;
end;
implementation
uses
Math;
///////////////////////////////////////////////////////////////////////////////
procedure TVariationCrop.Prepare;
begin
if (x0 < x1) then begin
_x0 := x0;
_x1 := x1;
end else begin
_x0 := x1;
_x1 := x0;
end;
if (y0 < y1) then begin
_y0 := y0;
_y1 := y1;
end else begin
_y0 := y1;
_y1 := y0;
end;
w := (_x1 - _x0) * 0.5 * s;
h := (_y1 - _y0) * 0.5 * s;
end;
procedure TVariationCrop.CalcFunction;
var x, y: double;
begin
x := FTx^;
y := FTy^;
if ((x < _x0) or (x > _x1) or (y < _y0) or (y > _y1)) and (z <> 0) then begin
x := 0; y := 0;
end else begin
if x < _x0 then x := _x0 + random * w
else if x > _x1 then x := _x1 - random * w;
if y < _y0 then y := _y0 + random * h
else if y > _y1 then y := _y1 - random * h;
end;
FPx^ := FPx^ + VVAR * x;
FPy^ := FPy^ + VVAR * y;
FPz^ := FPz^ + VVAR * FTz^;
end;
///////////////////////////////////////////////////////////////////////////////
constructor TVariationCrop.Create;
begin
x0 := -1; x1 := 1;
y0 := -1; y1 := 1;
end;
///////////////////////////////////////////////////////////////////////////////
class function TVariationCrop.GetInstance: TBaseVariation;
begin
Result := TVariationCrop.Create;
end;
///////////////////////////////////////////////////////////////////////////////
class function TVariationCrop.GetName: string;
begin
Result := n;
end;
///////////////////////////////////////////////////////////////////////////////
function TVariationCrop.GetVariableNameAt(const Index: integer): string;
begin
case Index Of
0: Result := n_x0;
1: Result := n_y0;
2: Result := n_x1;
3: Result := n_y1;
4: Result := n_s;
5: Result := n_z;
else
Result := '';
end
end;
///////////////////////////////////////////////////////////////////////////////
function TVariationCrop.SetVariable(const Name: string; var value: double): boolean;
begin
Result := False;
if Name = n_x0 then begin
x0 := Value;
Result := True;
end else if Name = n_y0 then begin
y0 := Value;
Result := True;
end else if Name = n_x1 then begin
x1 := Value;
Result := True;
end else if Name = n_y1 then begin
y1 := Value;
Result := True;
end else if Name = n_s then begin
if (Value < -1) then Value := -1;
if (Value > 1) then Value := 1;
s := Value;
Result := True;
end else if Name = n_z then begin
if (Value > 1) then Value := 1;
if (Value < 0) then Value := 0;
z := Round(Value);
Result := True;
end
end;
function TVariationCrop.ResetVariable(const Name: string): boolean;
begin
Result := False;
if Name = n_x0 then begin
x0 := -1;
Result := True;
end else if Name = n_y0 then begin
y0 := -1;
Result := True;
end else if Name = n_x1 then begin
x1 := 1;
Result := True;
end else if Name = n_y1 then begin
y1 := 1;
Result := True;
end else if Name = n_s then begin
s := 0;
Result := True;
end else if Name = n_z then begin
z := 0;
Result := True;
end
end;
///////////////////////////////////////////////////////////////////////////////
function TVariationCrop.GetNrVariables: integer;
begin
Result := 6
end;
///////////////////////////////////////////////////////////////////////////////
function TVariationCrop.GetVariable(const Name: string; var value: double): boolean;
begin
Result := False;
if Name = n_x0 then begin
Value := x0;
Result := True;
end else if Name = n_y0 then begin
Value := y0;
Result := True;
end else if Name = n_x1 then begin
Value := x1;
Result := True;
end else if Name = n_y1 then begin
Value := y1;
Result := True;
end else if Name = n_s then begin
Value := s;
Result := True;
end else if Name = n_z then begin
Value := z;
Result := True;
end
end;
///////////////////////////////////////////////////////////////////////////////
initialization
RegisterVariation(TVariationClassLoader.Create(TVariationCrop), true, false);
end.