new variation: radial blur!
***WARNING*** major update approaching! backup your sources! ;-)
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zueuk
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324
2.10/Source/varRadialBlur.pas
Normal file
324
2.10/Source/varRadialBlur.pas
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unit varRadialBlur;
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interface
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uses
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BaseVariation, XFormMan;
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const
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var_name = 'radial_blur';
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var_a_name = 'radial_blur_angle';
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{$define _ASM_}
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type
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TVariationRadialBlur = class(TBaseVariation)
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private
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angle,
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spin_var, zoom_var: double;
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rnd: array[0..3] of double;
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N: integer;
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procedure CalcZoom;
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procedure CalcSpin;
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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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class function GetNrVariables: integer; override;
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class function GetVariableNameAt(const Index: integer): string; override;
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function GetVariable(const Name: string; var value: double): boolean; override;
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function SetVariable(const Name: string; var value: double): boolean; override;
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function ResetVariable(const Name: string): boolean; override;
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procedure Prepare; override;
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procedure CalcFunction; override;
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procedure GetCalcFunction(var f: TCalcFunction); 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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// TVariationRadialBlur
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///////////////////////////////////////////////////////////////////////////////
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constructor TVariationRadialBlur.Create;
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begin
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angle := random * 2 - 1;
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end;
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procedure TVariationRadialBlur.Prepare;
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begin
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spin_var := vvar * sin(angle * pi/2);
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zoom_var := vvar * cos(angle * pi/2);
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N := 0;
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rnd[0] := random;
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rnd[1] := random;
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rnd[2] := random;
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rnd[3] := random;
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TVariationRadialBlur.GetCalcFunction(var f: TCalcFunction);
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begin
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if IsZero(spin_var) then f := CalcZoom
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else if IsZero(zoom_var) then f := CalcSpin
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else f := CalcFunction;
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TVariationRadialBlur.CalcFunction;
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{$ifndef _ASM_}
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var
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rndG, rz, ra: double;
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sina, cosa: extended;
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begin
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rndG := (rnd[0] + rnd[1] + rnd[2] + rnd[3] - 2);
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rnd[N] := random;
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N := (N+1) and $3;
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ra := sqrt(sqr(FTx^) + sqr(FTy^));
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SinCos(arctan2(FTy^, FTx^) + spin_var * rndG, sina, cosa);
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rz := zoom_var * rndG - 1;
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FPx^ := FPx^ + ra * cosa + rz * FTx^;
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FPy^ := FPy^ + ra * sina + rz * FTy^;
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{$else}
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asm
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mov edx, [eax + FTx]
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fld qword ptr [edx + 8] // FTy
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fld qword ptr [edx] // FTx
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fld st(1)
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fmul st, st
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fld st(1)
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fmul st, st
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faddp
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fsqrt
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fld st(2)
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fld st(2)
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fpatan
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fld qword ptr [eax + rnd]
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fadd qword ptr [eax + rnd+8]
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fadd qword ptr [eax + rnd+16]
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fadd qword ptr [eax + rnd+24]
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fld1
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fsub st(1), st
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fsub st(1), st
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fld st(1)
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fmul qword ptr [eax + zoom_var]
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fsubrp
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fmul st(4), st
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fmulp st(5), st
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fmul qword ptr [eax + spin_var]
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faddp
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call System.@RandExt
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mov edx, [eax + N]
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fstp qword ptr [eax + rnd + edx*8]
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inc edx
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and edx,$03
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mov [eax + N], edx
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fsincos
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fmul st, st(2)
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faddp st(3), st
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fmulp
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faddp st(2), st
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mov edx, [eax + FPx]
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fadd qword ptr [edx]
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fstp qword ptr [edx]
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fadd qword ptr [edx + 8]
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fstp qword ptr [edx + 8]
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fwait
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{$endif}
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TVariationRadialBlur.CalcZoom;
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{$ifndef _ASM_}
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var
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r: double;
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begin
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r := zoom_var * (rnd[0] + rnd[1] + rnd[2] + rnd[3] - 2);
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rnd[N] := random;
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N := (N+1) and $3;
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FPx^ := FPx^ + r * FTx^;
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FPy^ := FPy^ + r * FTy^;
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{$else}
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asm
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fld qword ptr [eax + rnd]
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fadd qword ptr [eax + rnd+8]
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fadd qword ptr [eax + rnd+16]
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fadd qword ptr [eax + rnd+24]
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fld1
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fadd st, st
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fsubp st(1), st
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fmul qword ptr [eax + zoom_var]
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call System.@RandExt
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mov edx, [eax + N]
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fstp qword ptr [eax + rnd + edx*8]
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inc edx
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and edx,$03
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mov [eax + N], edx
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mov edx, [eax + FTx]
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fld qword ptr [edx + 8] // FTy
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// mov ecx, [eax + FTx]
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fld qword ptr [edx]
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fmul st, st(2)
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// mov edx, [eax + FPx]
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fadd qword ptr [edx + 16]
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fstp qword ptr [edx + 16]
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fmulp
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// mov edx, [eax + FPy]
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fadd qword ptr [edx + 24]
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fstp qword ptr [edx + 24]
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fwait
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{$endif}
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TVariationRadialBlur.CalcSpin;
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{$ifndef _ASM_}
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var
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r: double;
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sina, cosa: extended;
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begin
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SinCos(arctan2(FTy^, FTx^) + spin_var * (rnd[0] + rnd[1] + rnd[2] + rnd[3] - 2),
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sina, cosa);
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r := sqrt(sqr(FTx^) + sqr(FTy^));
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rnd[N] := random;
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N := (N+1) and $3;
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FPx^ := FPx^ + r * cosa - FTx^;
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FPy^ := FPy^ + r * sina - FTy^;
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{$else}
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asm
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mov edx, [eax + FTx]
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// mov edx, [eax + FTy]
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fld qword ptr [edx + 8]
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// mov edx, [eax + FTx]
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fld qword ptr [edx]
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fld st(1)
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fld st(1)
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fpatan
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fld qword ptr [eax + rnd]
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fadd qword ptr [eax + rnd+8]
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fadd qword ptr [eax + rnd+16]
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fadd qword ptr [eax + rnd+24]
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fld1
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fadd st, st
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fsubp st(1), st
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fmul qword ptr [eax + spin_var]
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call System.@RandExt
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mov edx, [eax + N]
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fstp qword ptr [eax + rnd + edx*8]
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inc edx
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and edx,$03
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mov [eax + N], edx
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faddp
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fsincos
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fld st(3)
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fmul st,st
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fld st(3)
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fmul st,st
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faddp
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fsqrt
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fmul st(2), st
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fmulp st(1), st
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mov edx, [eax + FPx]
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fadd qword ptr [edx]
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fsubrp st(2),st
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// mov edx, [eax + FPy]
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fadd qword ptr [edx + 8]
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fsubrp st(2), st
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fstp qword ptr [edx]
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fstp qword ptr [edx + 8]
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fwait
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{$endif}
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationRadialBlur.GetInstance: TBaseVariation;
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begin
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Result := TVariationRadialBlur.Create;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationRadialBlur.GetName: string;
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begin
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Result := var_name;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationRadialBlur.GetVariableNameAt(const Index: integer): string;
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begin
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case Index of
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0: Result := var_a_name;
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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 TVariationRadialBlur.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 = var_a_name then begin
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Value := angle;
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Result := true;
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end;
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end;
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function TVariationRadialBlur.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 = var_a_name then begin
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angle := Value;
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Result := True;
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end;
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end;
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function TVariationRadialBlur.ResetVariable(const Name: string): boolean;
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begin
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Result := False;
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if Name = var_a_name then begin
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angle := 0;
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Result := True;
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end;
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end;
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///////////////////////////////////////////////////////////////////////////////
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class function TVariationRadialBlur.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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initialization
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RegisterVariation(TVariationRadialBlur);
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end.
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