128 lines
2.7 KiB
ObjectPascal
128 lines
2.7 KiB
ObjectPascal
{ Apophysis AV "Phoenix Edition" Copyright (C) 2021-2022 Alice V. Koryagina }
|
|
|
|
unit varPower;
|
|
|
|
interface
|
|
uses
|
|
BaseVariation, XFormMan;
|
|
|
|
type
|
|
TVariationPower = class(TBaseVariation)
|
|
private
|
|
use3D: byte;
|
|
procedure Calc3D;
|
|
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;
|
|
|
|
procedure CalcFunction; override;
|
|
procedure GetCalcFunction(var f: TCalcFunction); override;
|
|
end;
|
|
|
|
|
|
implementation
|
|
|
|
uses
|
|
Math;
|
|
|
|
////////////////////////
|
|
|
|
procedure TVariationPower.GetCalcFunction(var f: TCalcFunction);
|
|
begin
|
|
if use3D <> 0 then f := Calc3D // AV: added optional 3d-support
|
|
else f := CalcFunction;
|
|
end;
|
|
|
|
procedure TVariationPower.Calc3D; // AV
|
|
var
|
|
r, FSinA, FCosA: double;
|
|
begin
|
|
r := sqrt(sqr(FTx^) + sqr(FTy^) + sqr(FTz^)) + 1E-300;
|
|
FSinA := FTx^ / r;
|
|
FCosA := FTy^ / r;
|
|
r := vvar * Math.Power(r, FSinA);
|
|
FPx^ := FPx^ + r * FCosA;
|
|
FPy^ := FPy^ + r * FSinA;
|
|
// transform the plane into 3d-shape
|
|
r := vvar * Math.Power(r, FCosA);
|
|
FPz^ := FPz^ + r * FCosA; //FSinA;
|
|
end;
|
|
|
|
procedure TVariationPower.CalcFunction;
|
|
var
|
|
r, FSinA, FCosA: double;
|
|
begin
|
|
r := sqrt(sqr(FTx^) + sqr(FTy^)) + 1E-300;
|
|
FSinA := FTx^ / r;
|
|
FCosA := FTy^ / r;
|
|
r := vvar * Math.Power(r, FSinA);
|
|
FPx^ := FPx^ + r * FCosA;
|
|
FPy^ := FPy^ + r * FSinA;
|
|
end;
|
|
|
|
constructor TVariationPower.Create;
|
|
begin
|
|
inherited Create;
|
|
use3D := 0;
|
|
end;
|
|
|
|
class function TVariationPower.GetInstance: TBaseVariation;
|
|
begin
|
|
Result := TVariationPower.Create;
|
|
end;
|
|
|
|
class function TVariationPower.GetName: string;
|
|
begin
|
|
Result := 'power';
|
|
end;
|
|
|
|
function TVariationPower.GetNrVariables: integer;
|
|
begin
|
|
Result := 1;
|
|
end;
|
|
|
|
function TVariationPower.GetVariableNameAt(const Index: integer): string;
|
|
begin
|
|
case Index of
|
|
0: Result := 'power_use3D';
|
|
else
|
|
Result := '';
|
|
end;
|
|
end;
|
|
|
|
function TVariationPower.GetVariable(const Name: string;
|
|
var value: double): boolean;
|
|
begin
|
|
Result := False;
|
|
if Name = 'power_use3D' then begin
|
|
Value := use3D;
|
|
Result := True;
|
|
end;
|
|
end;
|
|
|
|
function TVariationPower.SetVariable(const Name: string;
|
|
var value: double): boolean;
|
|
begin
|
|
Result := False;
|
|
if Name = 'power_use3D' then begin
|
|
if (Value > 1) then Value := 1;
|
|
if (Value < 0) then Value := 0;
|
|
use3D := Round(Value);
|
|
Result := True;
|
|
end;
|
|
end;
|
|
|
|
//////////////////////////////
|
|
initialization
|
|
RegisterVariation(TVariationClassLoader.Create(TVariationPower), true, false);
|
|
|
|
end.
|