697 lines
18 KiB
ObjectPascal
697 lines
18 KiB
ObjectPascal
unit ImageMaker;
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interface
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uses
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Windows, Graphics, ControlPoint, Render;
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type
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TImageMaker = class
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private
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FOversample: Integer;
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FFilterSize: Integer;
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FFilter: array of array of double;
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FBitmap: TBitmap;
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FAlphaBitmap: TBitmap;
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FTransparentImage: TBitmap;
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Fcp: Tcontrolpoint;
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FBucketWidth: integer;
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FBuckets: TBucketArray;
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FOnProgress: TOnProgress;
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MaxA: int64; // for reuse in following slices
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procedure CreateFilter;
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procedure NormalizeFilter;
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procedure SetOnProgress(const Value: TOnProgress);
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procedure Progress(value: double);
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function GetTransparentImage: TBitmap;
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procedure CreateImage_MB(YOffset: integer = 0);
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procedure CreateImage_Flame3(YOffset: integer = 0);
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public
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destructor Destroy; override;
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function GetImage: TBitmap;
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procedure SetCP(CP: TControlPoint);
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procedure Init;
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procedure SetBucketData(const Buckets: TBucketArray; const BucketWidth: integer);
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function GetFilterSize: Integer;
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procedure CreateImage(YOffset: integer = 0);
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procedure SaveImage(const FileName: String);
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property OnProgress: TOnProgress
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read FOnProgress
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write SetOnProgress;
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property MaxCount: int64 read MaxA;
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end;
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implementation
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uses
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Math, SysUtils, PngImage, JPEG, Global, Types;
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{ TImageMaker }
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type
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TRGB = packed Record
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blue: byte;
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green: byte;
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red: byte;
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end;
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PByteArray = ^TByteArray;
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TByteArray = array[0..0] of byte;
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// PLongintArray = ^TLongintArray;
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// TLongintArray = array[0..0] of Longint;
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PRGBArray = ^TRGBArray;
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TRGBArray = array[0..0] of TRGB;
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///////////////////////////////////////////////////////////////////////////////
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destructor TImageMaker.Destroy;
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begin
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if assigned(FBitmap) then
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FBitmap.Free;
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if assigned(FAlphaBitmap) then
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FAlphaBitmap.Free;
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if assigned(FTransparentImage) then
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FTransparentImage.Free;
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inherited;
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TImageMaker.CreateFilter;
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var
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i, j: integer;
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fw: integer;
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adjust: double;
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ii, jj: double;
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begin
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FOversample := fcp.spatial_oversample;
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fw := Trunc(2.0 * FILTER_CUTOFF * FOversample * fcp.spatial_filter_radius);
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FFilterSize := fw + 1;
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// make sure it has same parity as oversample
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if odd(FFilterSize + FOversample) then
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inc(FFilterSize);
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if (fw > 0.0) then
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adjust := (1.0 * FILTER_CUTOFF * FFilterSize) / fw
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else
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adjust := 1.0;
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setLength(FFilter, FFilterSize, FFilterSize);
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for i := 0 to FFilterSize - 1 do begin
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for j := 0 to FFilterSize - 1 do begin
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ii := ((2.0 * i + 1.0)/ FFilterSize - 1.0) * adjust;
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jj := ((2.0 * j + 1.0)/ FFilterSize - 1.0) * adjust;
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FFilter[i, j] := exp(-2.0 * (ii * ii + jj * jj));
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end;
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end;
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Normalizefilter;
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TImageMaker.NormalizeFilter;
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var
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i, j: integer;
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t: double;
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begin
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t := 0;
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for i := 0 to FFilterSize - 1 do
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for j := 0 to FFilterSize - 1 do
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t := t + FFilter[i, j];
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for i := 0 to FFilterSize - 1 do
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for j := 0 to FFilterSize - 1 do
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FFilter[i, j] := FFilter[i, j] / t;
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TImageMaker.GetFilterSize: Integer;
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begin
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Result := FFiltersize;
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end;
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///////////////////////////////////////////////////////////////////////////////
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function TImageMaker.GetImage: TBitmap;
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begin
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if ShowTransparency then
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Result := GetTransparentImage
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else
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Result := FBitmap;
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TImageMaker.Init;
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begin
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if not Assigned(FBitmap) then
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FBitmap := TBitmap.Create;
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FBitmap.PixelFormat := pf24bit;
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FBitmap.Width := Fcp.Width;
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FBitmap.Height := Fcp.Height;
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if not Assigned(FAlphaBitmap) then
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FAlphaBitmap := TBitmap.Create;
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FAlphaBitmap.PixelFormat := pf8bit;
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FAlphaBitmap.Width := Fcp.Width;
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FAlphaBitmap.Height := Fcp.Height;
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CreateFilter;
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TImageMaker.SetBucketData(const Buckets: TBucketArray; const BucketWidth: integer);
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begin
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FBuckets := Buckets;
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FBucketWidth := BucketWidth;
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TImageMaker.SetCP(CP: TControlPoint);
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begin
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Fcp := CP;
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TImageMaker.SetOnProgress(const Value: TOnProgress);
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begin
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FOnProgress := Value;
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TImageMaker.CreateImage(YOffset: integer);
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begin
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Case PNGTransparency of
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0,1:
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CreateImage_Flame3(YOffset);
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2:
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CreateImage_MB(YOffset);
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else
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Exception.CreateFmt('Unexpected value of PNGTransparency [%d]', [PNGTransparency]);
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end;
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end;
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///////////////////////////////////////////////////////////////////////////////
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procedure TImageMaker.CreateImage_Flame3(YOffset: integer);
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var
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gamma: double;
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i, j: integer;
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alpha: double;
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ai, ri, gi, bi: Integer;
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bgtot: TRGB;
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ls: double;
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ii, jj: integer;
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fp: array[0..3] of double;
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Row: PRGBArray;
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AlphaRow: PbyteArray;
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vib, notvib: Integer;
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bgi: array[0..2] of Integer;
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bucketpos: Integer;
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filterValue: double;
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filterpos: Integer;
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lsa: array[0..1024] of double;
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sample_density: double;
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gutter_width: integer;
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k1, k2: double;
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area: double;
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begin
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if fcp.gamma = 0 then
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gamma := fcp.gamma
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else
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gamma := 1 / fcp.gamma;
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vib := round(fcp.vibrancy * 256.0);
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notvib := 256 - vib;
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bgi[0] := round(fcp.background[0]);
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bgi[1] := round(fcp.background[1]);
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bgi[2] := round(fcp.background[2]);
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bgtot.red := bgi[0];
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bgtot.green := bgi[1];
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bgtot.blue := bgi[2];
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gutter_width := FBucketwidth - FOversample * fcp.Width;
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// gutter_width := 2 * ((25 - Foversample) div 2);
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FBitmap.PixelFormat := pf24bit;
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sample_density := fcp.sample_density * power(2, fcp.zoom) * power(2, fcp.zoom);
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k1 := (fcp.Contrast * BRIGHT_ADJUST * fcp.brightness * 268 * PREFILTER_WHITE) / 256.0;
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area := FBitmap.Width * FBitmap.Height / (fcp.ppux * fcp.ppuy);
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k2 := (FOversample * FOversample) / (fcp.Contrast * area * fcp.White_level * sample_density);
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lsa[0] := 0;
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for i := 1 to 1024 do begin
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lsa[i] := (k1 * log10(1 + fcp.White_level * i * k2)) / (fcp.White_level * i);
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end;
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ls := 0;
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ai := 0;
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bucketpos := 0;
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for i := 0 to fcp.Height - 1 do begin
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// if FStop then
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// Break;
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Progress(i / fcp.Height);
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AlphaRow := PByteArray(FAlphaBitmap.scanline[YOffset + i]);
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Row := PRGBArray(FBitmap.scanline[YOffset + i]);
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for j := 0 to fcp.Width - 1 do begin
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if FFilterSize > 1 then begin
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fp[0] := 0;
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fp[1] := 0;
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fp[2] := 0;
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fp[3] := 0;
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for ii := 0 to FFilterSize - 1 do begin
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for jj := 0 to FFilterSize - 1 do begin
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filterValue := FFilter[ii, jj];
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filterpos := bucketpos + ii * FBucketWidth + jj;
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ls := lsa[Min(1023, FBuckets[filterpos].Count)];
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fp[0] := fp[0] + filterValue * ls * FBuckets[filterpos].Red;
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fp[1] := fp[1] + filterValue * ls * FBuckets[filterpos].Green;
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fp[2] := fp[2] + filterValue * ls * FBuckets[filterpos].Blue;
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fp[3] := fp[3] + filterValue * ls * FBuckets[filterpos].Count;
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end;
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end;
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fp[0] := fp[0] / PREFILTER_WHITE;
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fp[1] := fp[1] / PREFILTER_WHITE;
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fp[2] := fp[2] / PREFILTER_WHITE;
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fp[3] := fcp.white_level * fp[3] / PREFILTER_WHITE;
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end else begin
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ls := lsa[Min(1023, FBuckets[bucketpos].count)] / PREFILTER_WHITE;
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fp[0] := ls * FBuckets[bucketpos].Red;
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fp[1] := ls * FBuckets[bucketpos].Green;
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fp[2] := ls * FBuckets[bucketpos].Blue;
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fp[3] := ls * FBuckets[bucketpos].Count * fcp.white_level;
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end;
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Inc(bucketpos, FOversample);
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if (fp[3] > 0.0) then begin
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alpha := power(fp[3], gamma);
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ls := vib * alpha / fp[3];
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ai := round(alpha * 256);
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if (ai < 0) then
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ai := 0
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else if (ai > 255) then
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ai := 255;
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ai := 255 - ai;
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end else begin
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// no intensity so simply set the BG;
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Row[j] := bgtot;
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AlphaRow[j] := 0;
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continue;
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end;
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if (notvib > 0) then
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ri := Round(ls * fp[0] + notvib * power(fp[0], gamma))
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else
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ri := Round(ls * fp[0]);
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ri := ri + (ai * bgi[0]) shr 8;
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if (ri < 0) then
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ri := 0
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else if (ri > 255) then
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ri := 255;
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if (notvib > 0) then
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gi := Round(ls * fp[1] + notvib * power(fp[1], gamma))
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else
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gi := Round(ls * fp[1]);
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gi := gi + (ai * bgi[1]) shr 8;
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if (gi < 0) then
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gi := 0
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else if (gi > 255) then
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gi := 255;
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if (notvib > 0) then
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bi := Round(ls * fp[2] + notvib * power(fp[2], gamma))
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else
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bi := Round(ls * fp[2]);
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bi := bi + (ai * bgi[2]) shr 8;
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if (bi < 0) then
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bi := 0
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else if (bi > 255) then
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bi := 255;
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Row[j].red := ri;
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Row[j].green := gi;
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Row[j].blue := bi;
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AlphaRow[j] := 255 - ai;
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end;
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Inc(bucketpos, gutter_width);
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Inc(bucketpos, (FOversample - 1) * FBucketWidth);
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end;
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FBitmap.PixelFormat := pf24bit;
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Progress(1);
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end;
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///////////////////////////////////////////////////////////////////////////////
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// michael baranov transparancy code from flamesong
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procedure TImageMaker.CreateImage_MB(YOffset: integer);
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var
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gamma: double;
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i, j: integer;
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alpha: double;
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ai, ri, gi, bi: Integer;
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bgtot: TRGB;
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ls: double;
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ii, jj: integer;
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fp: array[0..3] of double;
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Row: PRGBArray;
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AlphaRow: PbyteArray;
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vib, notvib: Integer;
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bgi: array[0..2] of Integer;
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bucketpos: Integer;
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filterValue: double;
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filterpos: Integer;
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lsa: array[0..1024] of double;
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sample_density: double;
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gutter_width: integer;
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k1, k2: double;
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area: double;
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ACount: double;
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RCount: double;
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GCount: double;
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BCount: double;
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offsetLow: double;
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offsetHigh: double;
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densLow: double;
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densHigh: double;
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divisor: double;
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begin
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if fcp.gamma = 0 then
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gamma := fcp.gamma
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else
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gamma := 1 / (2* fcp.gamma);
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vib := round(fcp.vibrancy * 256.0);
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notvib := 256 - vib;
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bgi[0] := round(fcp.background[0]);
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bgi[1] := round(fcp.background[1]);
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bgi[2] := round(fcp.background[2]);
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bgtot.red := bgi[0];
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bgtot.green := bgi[1];
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bgtot.blue := bgi[2];
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gutter_width := FBucketwidth - FOversample * fcp.Width;
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sample_density := fcp.sample_density * power(2, fcp.zoom) * power(2, fcp.zoom);
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k1 := (fcp.Contrast * BRIGHT_ADJUST * fcp.brightness * 268 * PREFILTER_WHITE) / 256.0;
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area := FBitmap.Width * FBitmap.Height / (fcp.ppux * fcp.ppuy);
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k2 := (FOversample * FOversample) / (fcp.Contrast * area * fcp.White_level * sample_density);
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lsa[0] := 0;
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for i := 1 to 1024 do begin
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lsa[i] := (k1 * log10(1 + fcp.White_level * i * k2)) / (fcp.White_level * i);
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end;
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// only do this for the first slice
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// TODO: should be nicer always using a image wide value
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if YOffset = 0 then begin
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MaxA := 0;
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bucketpos := 0;
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for i := 0 to fcp.Height - 1 do begin
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for j := 0 to fcp.Width - 1 do begin
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MaxA := Max(MaxA, FBuckets[bucketpos].Count);
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Inc(bucketpos, FOversample);
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end;
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Inc(bucketpos, gutter_width);
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Inc(bucketpos, (FOversample - 1) * FBucketWidth);
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end;
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end;
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offsetLow := 0;
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offsetHigh := 0.02;
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densLow := MaxA * offsetLow;
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densHigh := MaxA * offsetHigh;
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divisor := power(MaxA * (1 - offsethigh), Gamma);
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ls := 0;
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ai := 0;
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bucketpos := 0;
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for i := 0 to fcp.Height - 1 do begin
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// if FStop then
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// Break;
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Progress(i / fcp.Height);
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AlphaRow := PByteArray(FAlphaBitmap.scanline[YOffset + i]);
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Row := PRGBArray(FBitmap.scanline[YOffset + i]);
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for j := 0 to fcp.Width - 1 do begin
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if FFilterSize > 1 then begin
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fp[0] := 0;
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fp[1] := 0;
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fp[2] := 0;
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fp[3] := 0;
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ACount := 0;
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for ii := 0 to FFilterSize - 1 do begin
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for jj := 0 to FFilterSize - 1 do begin
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filterValue := FFilter[ii, jj];
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filterpos := bucketpos + ii * FBucketWidth + jj;
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ls := lsa[Min(1023, FBuckets[filterpos].Count)];
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fp[0] := fp[0] + filterValue * ls * FBuckets[filterpos].Red;
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fp[1] := fp[1] + filterValue * ls * FBuckets[filterpos].Green;
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fp[2] := fp[2] + filterValue * ls * FBuckets[filterpos].Blue;
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fp[3] := fp[3] + filterValue * ls * FBuckets[filterpos].Count;
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ACount := ACount + filterValue * FBuckets[filterpos].Count;
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// RCount := RCount + filterValue * FBuckets[bucketpos].Red;
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// GCount := GCount + filterValue * FBuckets[bucketpos].Green;
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// BCount := BCount + filterValue * FBuckets[bucketpos].Blue;
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end;
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end;
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fp[0] := fp[0] / PREFILTER_WHITE;
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fp[1] := fp[1] / PREFILTER_WHITE;
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fp[2] := fp[2] / PREFILTER_WHITE;
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fp[3] := fcp.white_level * fp[3] / PREFILTER_WHITE;
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end else begin
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ls := lsa[Min(1023, FBuckets[bucketpos].count)] / PREFILTER_WHITE;
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fp[0] := ls * FBuckets[bucketpos].Red;
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fp[1] := ls * FBuckets[bucketpos].Green;
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fp[2] := ls * FBuckets[bucketpos].Blue;
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fp[3] := ls * FBuckets[bucketpos].Count * fcp.white_level;
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ACount := FBuckets[bucketpos].Count;
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RCount := FBuckets[bucketpos].Red;
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GCount := FBuckets[bucketpos].Green;
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BCount := FBuckets[bucketpos].Blue;
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end;
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Inc(bucketpos, FOversample);
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if (fp[3] > 0.0) then begin
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if(divisor > 1E-12) then
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alpha := power(ACount - densLow, Gamma) / divisor
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else
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alpha := 1;
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// ls := vib * alpha;
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ls := vib * power(fp[3], gamma) / fp[3];
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ai := round(alpha * 256);
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if (ai < 0) then
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ai := 0
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else if (ai > 255) then
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ai := 255;
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ai := 255 - ai;
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end else begin
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// no intensity so simply set the BG;
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Row[j] := bgtot;
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AlphaRow[j] := 0;
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continue;
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end;
|
|
|
|
if (notvib > 0) then
|
|
ri := Round(ls * fp[0] + notvib * power(fp[0], gamma))
|
|
else
|
|
ri := Round(ls * fp[0]);
|
|
ri := ri + (ai * bgi[0]) shr 8;
|
|
if (ri < 0) then
|
|
ri := 0
|
|
else if (ri > 255) then
|
|
ri := 255;
|
|
|
|
if (notvib > 0) then
|
|
gi := Round(ls * fp[1] + notvib * power(fp[1], gamma))
|
|
else
|
|
gi := Round(ls * fp[1]);
|
|
gi := gi + (ai * bgi[1]) shr 8;
|
|
if (gi < 0) then
|
|
gi := 0
|
|
else if (gi > 255) then
|
|
gi := 255;
|
|
|
|
if (notvib > 0) then
|
|
bi := Round(ls * fp[2] + notvib * power(fp[2], gamma))
|
|
else
|
|
bi := Round(ls * fp[2]);
|
|
bi := bi + (ai * bgi[2]) shr 8;
|
|
if (bi < 0) then
|
|
bi := 0
|
|
else if (bi > 255) then
|
|
bi := 255;
|
|
(*
|
|
|
|
ri := Round(RCount/ACount) + (ai * bgi[0]) shr 8;
|
|
if (ri < 0) then
|
|
ri := 0
|
|
else if (ri > 255) then
|
|
ri := 255;
|
|
|
|
gi := Round(GCount/ACount) + (ai * bgi[1]) shr 8;
|
|
if (gi < 0) then
|
|
gi := 0
|
|
else if (gi > 255) then
|
|
gi := 255;
|
|
|
|
bi := Round(BCount/ACount) + (ai * bgi[2]) shr 8;
|
|
if (bi < 0) then
|
|
bi := 0
|
|
else if (bi > 255) then
|
|
bi := 255;
|
|
*)
|
|
Row[j].red := ri;
|
|
Row[j].green := gi;
|
|
Row[j].blue := bi;
|
|
|
|
AlphaRow[j] := 255 - ai;
|
|
end;
|
|
|
|
Inc(bucketpos, gutter_width);
|
|
Inc(bucketpos, (FOversample - 1) * FBucketWidth);
|
|
end;
|
|
|
|
Progress(1);
|
|
end;
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
procedure TImageMaker.SaveImage(const FileName: String);
|
|
var
|
|
i,row: integer;
|
|
PngObject: TPngObject;
|
|
rowbm, rowpng: PByteArray;
|
|
JPEGImage: TJPEGImage;
|
|
begin
|
|
if UpperCase(ExtractFileExt(FileName)) = '.PNG' then begin
|
|
PngObject := TPngObject.Create;
|
|
PngObject.Assign(FBitmap);
|
|
Case PNGTransparency of
|
|
0:
|
|
; // do nothing
|
|
1,2:
|
|
begin
|
|
PngObject.CreateAlpha;
|
|
for i:= 0 to FAlphaBitmap.Height - 1 do begin
|
|
rowbm := PByteArray(FAlphaBitmap.scanline[i]);
|
|
rowpng := PByteArray(PngObject.AlphaScanline[i]);
|
|
for row := 0 to FAlphaBitmap.Width -1 do begin
|
|
rowpng[row] := rowbm[row];
|
|
end;
|
|
end;
|
|
end;
|
|
else
|
|
Exception.CreateFmt('Unexpected value of PNGTransparency [%d]', [PNGTransparency]);
|
|
end;
|
|
|
|
PngObject.SaveToFile(FileName);
|
|
PngObject.Free;
|
|
end else if UpperCase(ExtractFileExt(FileName)) = '.JPG' then begin
|
|
JPEGImage := TJPEGImage.Create;
|
|
JPEGImage.Assign(FBitmap);
|
|
JPEGImage.CompressionQuality := JPEGQuality;
|
|
JPEGImage.SaveToFile(FileName);
|
|
JPEGImage.Free;
|
|
|
|
// with TLinearBitmap.Create do
|
|
// try
|
|
// Assign(Renderer.GetImage);
|
|
// JPEGLoader.Default.Quality := JPEGQuality;
|
|
// SaveToFile(RenderForm.FileName);
|
|
// finally
|
|
// Free;
|
|
// end;
|
|
end else begin // bitmap
|
|
FBitmap.SaveToFile(FileName);
|
|
end;
|
|
|
|
end;
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
procedure TImageMaker.Progress(value: double);
|
|
begin
|
|
if assigned(FOnprogress) then
|
|
FOnprogress(Value);
|
|
end;
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
function TImageMaker.GetTransparentImage: TBitmap;
|
|
var
|
|
x,y: integer;
|
|
i,row: integer;
|
|
PngObject: TPngObject;
|
|
rowbm, rowpng: PByteArray;
|
|
begin
|
|
if assigned(FTransparentImage) then
|
|
FTransparentImage.Free;
|
|
|
|
FTransparentImage := TBitmap.Create;
|
|
|
|
FTransparentImage.Width := Fcp.Width;
|
|
FTransparentImage.Height := Fcp.Height;
|
|
|
|
FTransparentImage.Canvas.Brush.Color := ClSilver;
|
|
FTransparentImage.Canvas.FillRect(Rect(0,0,Fcp.Width, Fcp.Height));
|
|
|
|
FTransparentImage.Canvas.Brush.Color := ClWhite;
|
|
for x := 0 to ((Fcp.Width - 1) div 20) do begin
|
|
for y := 0 to ((Fcp.Height - 1) div 20) do begin
|
|
if odd(x + y) then
|
|
FTransparentImage.Canvas.FillRect(Rect(x * 20, y * 20, x * 20 + 20, y * 20 + 20));
|
|
end;
|
|
end;
|
|
|
|
PngObject := TPngObject.Create;
|
|
PngObject.Assign(FBitmap);
|
|
PngObject.CreateAlpha;
|
|
for i:= 0 to FAlphaBitmap.Height - 1 do begin
|
|
rowbm := PByteArray(FAlphaBitmap.scanline[i]);
|
|
rowpng := PByteArray(PngObject.AlphaScanline[i]);
|
|
for row := 0 to FAlphaBitmap.Width -1 do begin
|
|
rowpng[row] := rowbm[row];
|
|
end;
|
|
end;
|
|
|
|
PngObject.Draw(FTransparentImage.Canvas, Rect(0,0,Fcp.Width, Fcp.Height));
|
|
PngObject.Free;
|
|
|
|
Result := FTransparentImage;
|
|
end;
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
end.
|