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BitmapProducers.pas
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BitmapProducers.pas
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{Copyright (c) 2008 Ville Krumlinde
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.}
unit BitmapProducers;
interface
uses ZOpenGL, ZClasses, ZExpressions, ZBitmap;
type
TBitmapProducerWithOptionalArgument = class(TContentProducer)
private
function GetOptionalArgument(Stack : TZArrayList): TZBitmap;
protected
procedure DefineProperties(List: TZPropertyList); override;
public
UseBlankSource : boolean;
end;
TBitmapRect = class(TBitmapProducerWithOptionalArgument)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
Color : TZColorf;
Size : TZRectf;
end;
TBitmapZoomRotate = class(TContentProducer)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
Zoom,Rotation,ScaleX,ScaleY : single;
end;
TBitmapExpression = class(TBitmapProducerWithOptionalArgument)
strict private
type
PPixelTask = ^TPixelTask;
TPixelTask = record
P : PColorf;
W,H,Y : integer;
YStep : single;
end;
procedure PixelTask(Task : pointer);
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
Expression : TZExpressionPropValue;
end;
TBitmapFromFile = class(TContentProducer)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
BitmapFile : TZBinaryPropValue;
Transparency : (btNone,btBlackColor,btAlphaLayer);
HasAlphaLayer : boolean;
FileFormat : (bffUncompressed,bffJpeg);
DataWidth,DataHeight : integer;
end;
TBitmapBlur = class(TContentProducer)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
Radius : integer;
Amplify : single;
Kind : (bkiSquare,bkiTriangle,bkiGaussian,bkiCorners);
BlurDirection : (bdBoth, bdVertical, bdHorizontal);
end;
TBitmapLoad = class(TContentProducer)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
Bitmap : TZBitmap;
{$ifndef minimal}function GetDisplayName: AnsiString; override;{$endif}
end;
TBitmapCombine = class(TContentProducer)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
Method : (cmeAdd,cmeSubtract,cmeMultiply);
ExcludeAlpha : boolean;
end;
TBitmapCells = class(TContentProducer)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
RandomSeed,BorderPixels, NOfPoints : integer;
CellStyle : (cstStandard, cstNice1, cstTG1, cstTG2, cstTG3, cstWerk);
PlacementStyle : (pstRandom, pstHoneycomb, pstSquares, pstUnregularSquares);
UsedMetrics: (mtrEuclidean, mtrManhattan, mtrMaxMin, mtrProduct, mtrStripes);
end;
TBitmapDistort = class(TContentProducer)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
Amount : single;
end;
TBitmapPixels = class(TContentProducer)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
RandomSeed, NOfPoints, Color : integer;
end;
TBitmapConvolution = class(TContentProducer)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
ConvArray : TDefineArray;
SwapDim : boolean;
Divisor, Bias : single;
end;
TBitmapNoise = class(TContentProducer)
protected
procedure DefineProperties(List: TZPropertyList); override;
procedure ProduceOutput(Content : TContent; Stack : TZArrayList); override;
public
Octaves, StartingOctave : integer;
MustTile, MustTileY : boolean;
ZHeight : single; //Use to create time-variable textures
Persistence, BaseIntensity: single;
Color : integer;
end;
implementation
uses {$ifdef zlog}ZLog,{$endif} ZMath, Renderer, NanoJpeg, ZApplication;
function GetIncrement(const X,Y,W,H : integer) : integer; inline;
begin
//Wrap X & Y
//Use the fact that W & H always are power-of-two values (todo: no longer true)
Result := (Y and (H-1)) * W + (X and (W-1));
end;
{ TBitmapRect }
procedure TBitmapRect.ProduceOutput(Content : TContent; Stack : TZArrayList);
var
B : TZBitmap;
HasArg : boolean;
Verts : array[0..3] of TZVector2f;
begin
//one optional argument
B := GetOptionalArgument(Stack);
HasArg := B<>nil;
if not HasArg then
B := TZBitmap.CreateFromBitmap( TZBitmap(Content) );
B.RenderTargetBegin;
if not HasArg then
begin
//Clear if no source
glClearColor(0.0,0,0,0.0);
glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
end else
begin
//Fill screen with argument first
glEnable(GL_TEXTURE_2D);
glDisable(GL_TEXTURE_GEN_S);
glDisable(GL_TEXTURE_GEN_T);
B.UseTextureBegin;
glPushMatrix();
glScalef(2,2,2);
Self.ZApp.Driver.RenderUnitQuad();
glPopMatrix();
glDisable(GL_TEXTURE_2D);
end;
glColor3fv(@Color);
Verts[0] := Vector2f(Size.Left,Size.Top);
Verts[1] := Vector2f(Size.Left,Size.Bottom);
Verts[2] := Vector2f(Size.Right,Size.Bottom);
Verts[3] := Vector2f(Size.Right,Size.Top);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(2,GL_FLOAT,0,@Verts);
glDrawArrays(GL_TRIANGLE_FAN,0,4);
glDisableClientState(GL_VERTEX_ARRAY);
glColor3f(1.0,1.0,1.0);
B.RenderTargetEnd;
Stack.Push(B);
end;
procedure TBitmapRect.DefineProperties(List: TZPropertyList);
const DefSize = 0.2;
begin
inherited;
List.AddProperty({$IFNDEF MINIMAL}'Color',{$ENDIF}(@Color), zptColorf);
List.GetLast.DefaultValue.ColorfValue := MakeColorf(0.5,0.5,0.5,1.0);
List.AddProperty({$IFNDEF MINIMAL}'Size',{$ENDIF}(@Size), zptRectf);
List.GetLast.DefaultValue.RectfValue := TZRectf(MakeColorf(-DefSize,-DefSize,DefSize,DefSize));
end;
{ TBitmapZoomRotate }
procedure TBitmapZoomRotate.ProduceOutput(Content : TContent; Stack : TZArrayList);
const
Size = 9;
var
B,SourceB : TZBitmap;
TexLeft : single;
TexTop : single;
TexRight : single;
TexBottom : single;
Z : single;
Verts : array[0..3] of TZVector2f;
Texc : array[0..3] of TZVector2f;
begin
//one argument required
if Stack.Count=0 then
Exit;
SourceB := TZBitmap(Stack.Pop());
B := TZBitmap.CreateFromBitmap( TZBitmap(Content) );
B.RenderTargetBegin;
SourceB.UseTextureBegin;
Z := -Zoom;
TexLeft := 0 - Z;
TexRight := Size + Z;
TexTop := 0 - Z;
TexBottom := Size + Z;
//1.0 = one full circle = 360 degrees in opengl
if Rotation<>0 then
glRotatef( (Rotation*360) , 0, 0, 1);
glEnable(GL_TEXTURE_2D);
glDisable(GL_TEXTURE_GEN_S);
glDisable(GL_TEXTURE_GEN_T);
glScalef(ScaleX,ScaleY,1);
Verts[0] := Vector2f(-Size,-Size); Texc[0] := Vector2f(TexLeft, TexTop);
Verts[1] := Vector2f(-Size,Size); Texc[1] := Vector2f(TexLeft, TexBottom);
Verts[2] := Vector2f(Size,Size); Texc[2] := Vector2f(TexRight, TexBottom);
Verts[3] := Vector2f(Size,-Size); Texc[3] := Vector2f(TexRight, TexTop);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glVertexPointer(2,GL_FLOAT,0,@Verts);
glTexCoordPointer(2,GL_FLOAT,0,@Texc);
glDrawArrays(GL_TRIANGLE_FAN,0,4);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
SourceB.Free;
B.RenderTargetEnd;
Stack.Push(B);
end;
procedure TBitmapZoomRotate.DefineProperties(List: TZPropertyList);
begin
inherited;
List.AddProperty({$IFNDEF MINIMAL}'Zoom',{$ENDIF}(@Zoom), zptFloat);
List.AddProperty({$IFNDEF MINIMAL}'Rotation',{$ENDIF}(@Rotation), zptFloat);
List.AddProperty({$IFNDEF MINIMAL}'ScaleX',{$ENDIF}(@ScaleX), zptFloat);
List.GetLast.DefaultValue.FloatValue := 1.0;
List.AddProperty({$IFNDEF MINIMAL}'ScaleY',{$ENDIF}(@ScaleY), zptFloat);
List.GetLast.DefaultValue.FloatValue := 1.0;
end;
{ TBitmapExpression }
procedure TBitmapExpression.DefineProperties(List: TZPropertyList);
begin
inherited;
List.AddProperty({$IFNDEF MINIMAL}'Expression',{$ENDIF}(@Expression), zptExpression);
{$ifndef minimal}
List.GetLast.DefaultValue.ExpressionValue.Source :=
'//X,Y : current coordinate (0..1)'#13#10 +
'//Pixel : current color (rgb)'#13#10 +
'//Sample expression: Pixel.R=abs(sin(X*16));';
List.GetLast.ExpressionKind := ekiBitmap;
{$endif}
end;
procedure TBitmapExpression.PixelTask(Task: pointer);
var
Env : TExecutionEnvironment;
A : TDefineArray;
X,Y : PSingle;
XStep : single;
T : PPixelTask;
I,J : integer;
begin
T := PPixelTask(Task);
A := TDefineArray.Create(nil);
A.SizeDim1 := 4;
Env.Init;
Env.StackPush(X);
Env.StackPush(Y);
Env.StackPushPointer(A);
X := PSingle(Env.StackGetPtrToItem(0));
Y := PSingle(Env.StackGetPtrToItem(1));
XStep := 1/(T.W-1);
Y^ := T.Y*T.YStep;
for I := 0 to T.H-1 do
begin
X^ := 0.0;
for J := 0 to T.W-1 do
begin
A.SetExternalData(T.P);
ZExpressions.RunCode(Expression.Code,@Env);
Inc(T.P);
X^ := X^ + XStep;
end;
Y^ := Y^ + T.YStep;
end;
A.Free;
end;
procedure TBitmapExpression.ProduceOutput(Content : TContent; Stack: TZArrayList);
var
SourceB,B : TZBitmap;
H,W,I : integer;
Pixels,P : PColorf;
TaskCount,RowsLeft : integer;
TaskList : pointer;
Task : PPixelTask;
TaskH : integer;
begin
SourceB := GetOptionalArgument(Stack);
if SourceB<>nil then
begin
B := TZBitmap.CreateFromBitmap( SourceB );
Pixels := SourceB.GetCopyAsFloats;
SourceB.Free;
end
else
begin
B := TZBitmap.CreateFromBitmap( TZBitmap(Content) );
Pixels := nil;
end;
W := B.PixelWidth;
H := B.PixelHeight;
if Pixels=nil then
begin
GetMem(Pixels,W * H * 16 );
FillChar(Pixels^,W * H * 16, 0);
end;
B.SetMemory(Pixels,GL_RGBA,GL_FLOAT);
TaskCount := ZMath.Min(H, Tasks.WorkerCount);
GetMem(TaskList,TaskCount*SizeOf(TPixelTask));
Task := TaskList;
RowsLeft := H;
TaskH := H div TaskCount;
P := Pixels;
for I := 0 to TaskCount-1 do
begin
Task.P := P;
Task.W := W;
Task.H := TaskH;
Dec(RowsLeft,TaskH);
if I=TaskCount-1 then
Inc(Task.H,RowsLeft); //if any rows are left then add to last task
Task.Y := I*TaskH;
Task.YStep := 1/(H-1);
Inc(Task);
Inc(P,W*TaskH);
end;
Tasks.Run(Self.PixelTask,TaskList,TaskCount,SizeOf(TPixelTask));
FreeMem(TaskList);
//Needed to send the bitmap to opengl
B.UseTextureBegin;
FreeMem(Pixels);
Stack.Push(B);
end;
{ TBitmapFromFile }
procedure TBitmapFromFile.DefineProperties(List: TZPropertyList);
begin
inherited;
List.AddProperty({$IFNDEF MINIMAL}'BitmapFile',{$ENDIF}(@BitmapFile), zptBinary);
List.AddProperty({$IFNDEF MINIMAL}'Transparency',{$ENDIF}(@Transparency), zptByte);
{$ifndef minimal}List.GetLast.SetOptions(['None','BlackColor','AlphaLayer']);{$endif}
List.AddProperty({$IFNDEF MINIMAL}'HasAlphaLayer',{$ENDIF}(@HasAlphaLayer), zptBoolean);
{$ifndef minimal}List.GetLast.IsReadOnly := True;{$endif}
{$ifndef minimal}List.GetLast.HideInGui := True;{$endif}
List.AddProperty({$IFNDEF MINIMAL}'FileFormat',{$ENDIF}(@FileFormat), zptByte);
{$ifndef minimal}List.GetLast.SetOptions(['Uncompressed','Jpeg']);{$endif}
{$ifndef minimal}List.GetLast.IsReadOnly := True;{$endif}
{$ifndef minimal}List.GetLast.HideInGui := True;{$endif}
List.AddProperty({$IFNDEF MINIMAL}'DataWidth',{$ENDIF}(@DataWidth), zptInteger);
{$ifndef minimal}List.GetLast.IsReadOnly := True;{$endif}
{$ifndef minimal}List.GetLast.HideInGui := True;{$endif}
List.AddProperty({$IFNDEF MINIMAL}'DataHeight',{$ENDIF}(@DataHeight), zptInteger);
{$ifndef minimal}List.GetLast.IsReadOnly := True;{$endif}
{$ifndef minimal}List.GetLast.HideInGui := True;{$endif}
end;
{$POINTERMATH ON}
procedure TBitmapFromFile.ProduceOutput(Content: TContent; Stack: TZArrayList);
var
BM : TZBitmap;
SP,SPStart,DP,Mem : PByte;
Nj : TNjDecoder;
SWidth,SHeight,SPixelSize,
DWidth,DHeight,
X,Y : integer;
begin
BM := TZBitmap.CreateFromBitmap( TZBitmap(Content) );
Nj := nil;
SP := nil;
SWidth := BM.PixelWidth;
SHeight := BM.PixelHeight;
DWidth := SWidth;
DHeight := SHeight;
if Self.DataWidth<>0 then
begin
SWidth := Self.DataWidth;
SHeight := Self.DataHeight;
end
{$ifndef minimal}
else //DataWidth not set (component created before these properties existed), set from owner Bitmap size
begin
Self.DataWidth := SWidth;
Self.DataHeight := SHeight;
end
{$endif};
//Ifall det behövs format och storleksdata om bitmappen
//så kan man lägga till properties senare.
case Self.FileFormat of
bffUncompressed:
begin
{$ifndef minimal}
if BitmapFile.Size<(SWidth*SHeight*3) then
begin
ZLog.GetLog(Self.ClassName).Warning('Incorrect bitmap data size.');
BM.Free;
Exit;
end;
{$endif}
SP := BitmapFile.Data;
end;
bffJpeg:
begin
Nj := TNjDecoder.Create;
if not Nj.Decode(BitmapFile.Data,BitmapFile.Size) then
begin
{$ifndef minimal}
ZLog.GetLog(Self.ClassName).Warning('Jpeg decoder failed.');
BM.Free;
Exit;
{$endif}
end;
SP := Nj.GetImage;
end;
end;
GetMem(Mem,DWidth*DHeight*4);
FillChar(Mem^,DWidth*DHeight*4,0);
if Self.HasAlphaLayer then
SPixelSize := 4
else
SPixelSize := 3;
//Source image is upside-down. This is how it should be sent to opengl too.
SPStart := SP;
for Y := 0 to Min(SHeight,DHeight)-1 do
begin
DP := @Mem[(DHeight-1-Y)*DWidth*4];
SP := @SPStart[(SHeight-1-Y)*SWidth*SPixelSize];
for X := 0 to Min(SWidth,DWidth)-1 do
begin
Move(SP^,DP^,SPixelSize);
case Self.Transparency of
btNone : DP[3] := High(Byte);
btBlackColor :
if PInteger(DP)^=0 then
DP[3] := 0
else
DP[3] := High(Byte);
end;
Inc(SP,SPixelSize);
Inc(DP,4);
end;
end;
BM.SetMemory(Mem,GL_RGBA,GL_UNSIGNED_BYTE);
//Needed to send the bitmap to opengl
BM.UseTextureBegin;
Nj.Free;
if Mem<>nil then
FreeMem(Mem);
Stack.Push(BM);
end;
{ Convolution }
procedure ConvolveImage(SourceP, DestP: PColorf;ImageW, ImageH : integer; ConvMatrix : PFloat; ConvW,ConvH : integer; TmpDiv, Bias : single);
var
Tot : TZVector3f;
P,Tmp : PZVector3f;
M : PFloat;
I,J,K,L : integer;
XBound,YBound : integer;
begin
XBound := (ConvW-1) div 2;
YBound := (ConvH-1) div 2;
P := PZVector3f(DestP);
for I := 0 to ImageH-1 do
for J := 0 to ImageW-1 do
begin
FillChar(Tot,SizeOf(Tot),0);
M := ConvMatrix;
for L := -(YBound) to YBound do
for K := -(XBound) to XBound do
begin
Tmp := PZVector3f(SourceP);
Inc(Tmp, GetIncrement(J+K,I+L,ImageW,ImageH));
Tot[0] := Tot[0] + Tmp^[0]*M^;
Tot[1] := Tot[1] + Tmp^[1]*M^;
Tot[2] := Tot[2] + Tmp^[2]*M^;
Inc(M);
end;
VecDiv3(Tot, TmpDiv, P^);
P^[0] := P^[0] + Bias;
P^[1] := P^[1] + Bias;
P^[2] := P^[2] + Bias;
Inc(P);
end; //for J (the I cycle has no begin-end block)
end;
{ TBitmapBlur }
procedure TBitmapBlur.DefineProperties(List: TZPropertyList);
begin
inherited;
List.AddProperty({$IFNDEF MINIMAL}'Radius',{$ENDIF}(@Radius), zptInteger);
List.AddProperty({$IFNDEF MINIMAL}'Amplify',{$ENDIF}(@Amplify), zptFloat);
List.GetLast.DefaultValue.FloatValue := 1.0;
List.AddProperty({$IFNDEF MINIMAL}'Kind',{$ENDIF}(@Kind), zptByte);
{$ifndef minimal}List.GetLast.SetOptions(['Square','Triangle','Gaussian', 'Corners']);{$endif}
List.AddProperty({$IFNDEF MINIMAL}'BlurDirection',{$ENDIF}(@BlurDirection), zptByte);
{$ifndef minimal}List.GetLast.SetOptions(['BothDirections','VerticalOnly','HorizontalOnly']);{$endif}
end;
procedure TBitmapBlur.ProduceOutput(Content: TContent; Stack: TZArrayList);
var
SourceB,B : TZBitmap;
H,W,N : integer;
SourceP,DestP : PColorf;
TmpDiv : single;
SizeBytes : integer;
ConvMatrix : PFloat;
ConvTmp : PFloat;
ConvW, ConvH : integer;
begin
if Stack.Count=0 then
Exit;
SourceB := TZBitmap(Stack.Pop());
B := TZBitmap.CreateFromBitmap( SourceB );
SourceP := SourceB.GetCopyAs3f;
SourceB.Free;
W := B.PixelWidth;
H := B.PixelHeight;
SizeBytes := SizeOf(TZVector3f)*W*H;
GetMem(DestP,SizeBytes);
B.SetMemory(DestP,GL_RGB,GL_FLOAT);
GetMem(ConvMatrix,SizeOf(single)*(Radius*2+1));
ConvTmp := ConvMatrix;
TmpDiv := 0;
for N := -Radius to Radius do
begin
case Kind of
bkiSquare: ConvTmp^ := 1;
bkiTriangle: ConvTmp^ := Radius - abs(N);
bkiGaussian: ConvTmp^ := Power(2.71, -(N*N)/(0.2*Radius*Radius));
bkiCorners: ConvTmp^ := abs(N);
end;
TmpDiv := TmpDiv + ConvTmp^;
Inc(ConvTmp);
end; //FOR N
TmpDiv := TmpDiv/Amplify;
case BlurDirection of
bdBoth:
begin
ConvH := Radius*2+1;
ConvW := 1;
ConvolveImage(SourceP, DestP, W, H, ConvMatrix, ConvW, ConvH, TmpDiv, 0);
Move(DestP^,SourceP^,SizeBytes);
ConvW := Radius*2+1;
ConvH := 1;
end;
bdVertical:
begin
ConvW := 1;
ConvH := Radius*2+1;
end;
else //bdHorizontal:
begin
ConvW := Radius*2+1;
ConvH := 1;
end;
end;
ConvolveImage(SourceP, DestP, W, H, ConvMatrix, ConvW, ConvH, TmpDiv, 0);
//Needed to send the bitmap to opengl
B.UseTextureBegin;
FreeMem(SourceP);
FreeMem(DestP);
FreeMem(ConvMatrix);
Stack.Push(B);
end;
{ TBitmapLoad }
procedure TBitmapLoad.DefineProperties(List: TZPropertyList);
begin
inherited;
List.AddProperty({$IFNDEF MINIMAL}'Bitmap',{$ENDIF}(@Bitmap), zptComponentRef);
{$ifndef minimal}List.GetLast.SetChildClasses([TZBitmap]);{$endif}
end;
{$ifndef minimal}
function TBitmapLoad.GetDisplayName: AnsiString;
begin
Result := inherited GetDisplayName;
if Assigned(Bitmap) then
Result := Result + ' ' + Bitmap.Name;
end;
{$endif}
procedure TBitmapLoad.ProduceOutput(Content: TContent; Stack: TZArrayList);
var
B : TZBitmap;
Pixels : pointer;
begin
if Bitmap=nil then
Exit;
{$ifndef minimal}
if (Bitmap.PixelWidth<>TZBitmap(Content).PixelWidth) or
(Bitmap.PixelHeight<>TZBitmap(Content).PixelHeight) then
begin
ZLog.GetLog(Self.ClassName).Warning('Bitmap size must match target.');
Exit;
end;
if Bitmap=Content then
begin
ZLog.GetLog(Self.ClassName).Warning('BitmapLoad cannot load itself.');
Exit;
end;
{$endif}
B := TZBitmap.CreateFromBitmap(TZBitmap(Content));
Pixels := Bitmap.GetCopyAsFloats;
B.SetMemory(Pixels,GL_RGBA,GL_FLOAT);
//Needed to send the bitmap to opengl
B.UseTextureBegin;
FreeMem(Pixels);
Stack.Push(B);
end;
{ TBitmapCombine }
procedure TBitmapCombine.DefineProperties(List: TZPropertyList);
begin
inherited;
List.AddProperty({$IFNDEF MINIMAL}'Method',{$ENDIF}(@Method), zptByte);
{$ifndef minimal}List.GetLast.SetOptions(['Add','Subtract','Multiply']);{$endif}
List.AddProperty({$IFNDEF MINIMAL}'ExcludeAlpha',{$ENDIF}(@ExcludeAlpha), zptBoolean);
end;
procedure TBitmapCombine.ProduceOutput(Content: TContent; Stack: TZArrayList);
var
B,B1,B2 : TZBitmap;
Data1,Data2,P1,P2 : PColorf;
I,J,EndI : integer;
begin
if Stack.Count<2 then
Exit;
B1 := TZBitmap(Stack.Pop());
B2 := TZBitmap(Stack.Pop());
{$ifndef minimal}
if (B1.PixelWidth<>B2.PixelWidth) or
(B1.PixelHeight<>B2.PixelHeight) then
begin
ZLog.GetLog(Self.ClassName).Warning('Bitmap sizes must match.');
Exit;
end;
{$endif}
B := TZBitmap.CreateFromBitmap(TZBitmap(Content));
Data1 := B1.GetCopyAsFloats;
Data2 := B2.GetCopyAsFloats;
P1 := Data1;
P2 := Data2;
if Self.ExcludeAlpha then
EndI := 2
else
EndI := 3;
for I := 0 to B1.PixelWidth*B1.PixelHeight-1 do
begin
case Method of
cmeAdd :
begin
for J := 0 to EndI do
P2^.V[J] := Clamp(P1^.V[J] + P2^.V[J],0,1);
end;
cmeSubtract :
begin
for J := 0 to EndI do
P2^.V[J] := Clamp(P1^.V[J] - P2^.V[J],0,1);
end;
cmeMultiply:
begin
for J := 0 to EndI do
P2^.V[J] := P1^.V[J] * P2^.V[J];
end;
end;
Inc(P1);
Inc(P2);
end;
B.SetMemory(Data2,GL_RGBA,GL_FLOAT);
//Needed to send the bitmap to opengl
B.UseTextureBegin;
FreeMem(Data1);
FreeMem(Data2);
B1.Free;
B2.Free;
Stack.Push(B);
end;
{ TBitmapCells }
procedure TBitmapCells.ProduceOutput(Content : TContent; Stack : TZArrayList);
//Code and comments by kattle87
const
MaxPoints = 64;
type
PValueRecord = ^TValueRecord;
TValueRecord =
record
DistFromCenter, DistSecondCenter, CPIndex, CPSecondIndex : integer;
end;
var
B : TZBitmap;
IsBorder, IsSecondBorder : Boolean;
H,W,I,J,K,Dist,SaveSeed,PixelCount,GlobalMax,XDist,YDist,NOfPointsCopy : integer;
YIsNegative : integer; //used with the "Strip" style, used integer to avoid boolean conversion (if any)
Pixels : PColorf;
Pixel : PColorf;
ValueBuffer,Value,Value2 : PValueRecord;
PointIndexes : array[0..3] of
record
Increment, CPIndex, CPSecondIndex : integer;
end;
CP : array[0..MaxPoints-1] of
record
//Central points
X,Y,MaxDist : integer;
R,G,B : single;
end;
begin
B := TZBitmap.CreateFromBitmap( TZBitmap(Content) );
W := B.PixelWidth;
H := B.PixelHeight;
PixelCount := W*H;
GetMem(Pixels,PixelCount * Sizeof(TZColorf) );
GetMem(ValueBuffer,PixelCount * SizeOf(TValueRecord));
FillChar(ValueBuffer^,PixelCount * SizeOf(TValueRecord),0);
B.SetMemory(Pixels,GL_RGBA,GL_FLOAT);
SaveSeed := RandSeed;
RandSeed := Self.RandomSeed;
//I started using the break command in order to avoid the needing of that
//MinVal function (previously I used it in the wrapping code, now it's unnecessary
//Since with the presets I currenlty SET the NOfPoints (but this screws up things
//also in the editor) I locally use a copy of the NOfPoints value.
NOfPointsCopy := NOfPoints;
for I := 0 to MaxPoints-1 do
begin
if I >= NOfPointsCopy then Break;
case PlacementStyle of
pstRandom :
begin
CP[I].Y := System.Random(H);
CP[I].X := System.Random(W);
end;
pstSquares :
begin
K := Round(sqrt(NOfPointsCopy+1));
CP[I].X := (I div K)*(W div K);
CP[I].Y := (I mod K)*(H div K);
end;
pstUnregularSquares :
begin
K := Round(sqrt(NOfPointsCopy+1));
CP[I].X := System.Random(W);
CP[I].Y := (I mod K)*(H div K);
end;
pstHoneyComb :
begin
NOfPointsCopy := 4;
CP[I].X := (I mod 2) * W div 2;
CP[I].Y := I*H div 4;
end;
end;
CP[I].R := System.Random;
CP[I].G := System.Random;
CP[I].B := System.Random;
CP[I].MaxDist := 0;
end;
//For now, only "Computes" the pixels;
Value := ValueBuffer;
GlobalMax := 0;
Dist := 0;
for I := 0 to H-1 do //I is height (Y)!
begin
for J := 0 to W-1 do //J is width (X)!
begin
Value.DistFromCenter := 2147483647; //2^31-1
Value.DistSecondCenter := 2147483647; //2^31-1
for K := 0 to MaxPoints-1 do
begin
if K >= NOfPointsCopy then Break;
XDist := abs(J-CP[K].X);
YDist := CP[K].Y-I;
if (YDist < 0) then YIsNegative := 1 else YIsNegative := 0;
YDist := abs(YDist);
if XDist > (W div 2) then
XDist := W - XDist;
if YDist > (H div 2) then
begin
YDist := H - YDist;
YIsNegative := not YIsNegative;
end;
case UsedMetrics of
mtrEuclidean: Dist := (XDist)*(XDist) + (YDist)*(YDist);
mtrManhattan: Dist := XDist+YDist;
mtrStripes: Dist := YDist * 2048 + YIsNegative * 1024 + XDist;
mtrMaxMin: Dist := abs(XDist-YDist);
mtrProduct: Dist := (XDist+2)*(YDist+2);
end; // ^ ^
//it you add a higher constant to the mtrProduct, it will
//make the "carved lines" do disappear faster. IMO good
//values are the ones from 1 to 4
if K = 0 then
begin
Value.DistFromCenter := Dist;
Value.CPIndex := K;
end
else
begin
if Dist < Value.DistFromCenter then //if we found a new Minimal Distance:
begin
Value.DistSecondCenter := Value.DistFromCenter; //old min now is new second min
Value.CPSecondIndex := Value.CPIndex;
Value.DistFromCenter := Dist;
Value.CPIndex := K;
end
else
begin
if Dist < Value.DistSecondCenter then
begin
Value.DistSecondCenter := Dist;
Value.CPSecondIndex := K;
end; //Found the new second nearest center
end;
end; //IF K = 0;
end; //For K
//now we know at what K our pixel belongs, seek the maxdist of the K-nth space!
if (Value.DistFromCenter > CP[Value.CPIndex].MaxDist) then
begin
CP[Value.CPIndex].MaxDist := Value.DistFromCenter;
//If the new distance is the new global max
if GlobalMax < Value.DistFromCenter then
GlobalMax := Value.DistFromCenter;
end;
Inc(Value);
end; //For J
end; //For I
//Now use the pre-calculated values to do something
Pixel := Pixels;
Value := ValueBuffer;
for I := 0 to H-1 do //I is height (Y)!
begin
for J := 0 to W-1 do //J is width (X)!
begin