1 // Created on: 2013-06-25
2 // Created by: Dmitry BOBYLEV
3 // Copyright (c) 2013-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
7 // This library is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU Lesser General Public License version 2.1 as published
9 // by the Free Software Foundation, with special exception defined in the file
10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11 // distribution for complete text of the license and disclaimer of any warranty.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 #include <Graphic3d_MarkerImage.hxx>
18 #include <Image_PixMap.hxx>
19 #include <Standard_Atomic.hxx>
20 #include <TColStd_HArray1OfByte.hxx>
24 static volatile Standard_Integer THE_MARKER_IMAGE_COUNTER = 0;
27 IMPLEMENT_STANDARD_HANDLE (Graphic3d_MarkerImage, Standard_Transient)
28 IMPLEMENT_STANDARD_RTTIEXT(Graphic3d_MarkerImage, Standard_Transient)
30 // =======================================================================
31 // function : Graphic3d_MarkerImage
33 // =======================================================================
34 Graphic3d_MarkerImage::Graphic3d_MarkerImage (const Handle(Image_PixMap)& theImage)
39 myWidth ((Standard_Integer )theImage->Width()),
40 myHeight ((Standard_Integer )theImage->Height())
42 myImageId = TCollection_AsciiString ("Graphic3d_MarkerImage_")
43 + TCollection_AsciiString (Standard_Atomic_Increment (&THE_MARKER_IMAGE_COUNTER));
45 myImageAlphaId = TCollection_AsciiString ("Graphic3d_MarkerImageAlpha_")
46 + TCollection_AsciiString (THE_MARKER_IMAGE_COUNTER);
49 // =======================================================================
50 // function : Graphic3d_MarkerImage
52 // =======================================================================
53 Graphic3d_MarkerImage::Graphic3d_MarkerImage (const Handle(TColStd_HArray1OfByte)& theBitMap,
54 const Standard_Integer& theWidth,
55 const Standard_Integer& theHeight)
56 : myBitMap (theBitMap),
63 myImageId = TCollection_AsciiString ("Graphic3d_MarkerImage_")
64 + TCollection_AsciiString (Standard_Atomic_Increment (&THE_MARKER_IMAGE_COUNTER));
66 myImageAlphaId = TCollection_AsciiString ("Graphic3d_MarkerImageAlpha_")
67 + TCollection_AsciiString (THE_MARKER_IMAGE_COUNTER);
70 // =======================================================================
71 // function : GetBitMapArray
73 // =======================================================================
74 Handle(TColStd_HArray1OfByte) Graphic3d_MarkerImage::GetBitMapArray (const Standard_Real& theAlphaValue) const
76 if (!myBitMap.IsNull())
81 Handle(TColStd_HArray1OfByte) aBitMap;
87 const Standard_Integer aNumOfBytesInRow = (Standard_Integer )(myImage->Width() / 8) + (myImage->Width() % 8 ? 1 : 0);
88 const Standard_Integer aNumOfBytes = (Standard_Integer )(aNumOfBytesInRow * myImage->Height());
89 const Standard_Integer aHeight = (Standard_Integer )myImage->Height();
90 const Standard_Integer aWidth = (Standard_Integer )myImage->Width();
91 aBitMap = new TColStd_HArray1OfByte (0, aNumOfBytes - 1);
93 for (Standard_Integer aRow = 0; aRow < aHeight; aRow++)
95 for (Standard_Integer aColumn = 0; aColumn < aWidth; aColumn++)
97 Quantity_Parameter anAlphaValue;
98 Quantity_Color aColor = myImage->PixelColor (aColumn, aRow, anAlphaValue);
99 Standard_Boolean aBitOn = Standard_False;
101 if (myImage->Format() == Image_PixMap::ImgGray)
103 aBitOn = aColor.Red() > theAlphaValue;
107 aBitOn = anAlphaValue > theAlphaValue;
110 Standard_Integer anIndex = aNumOfBytesInRow * aRow + aColumn / 8;
111 aBitMap->SetValue (anIndex, (Standard_Byte)(aBitMap->Value (anIndex) +
112 (aBitOn ? (0x80 >> (aColumn % 8)) : 0)));
119 // =======================================================================
120 // function : GetImage
122 // =======================================================================
123 const Handle(Image_PixMap)& Graphic3d_MarkerImage::GetImage()
125 if (!myImage.IsNull())
130 if (myBitMap.IsNull())
135 // Converting a byte array to bitmap image. Row and column offsets are used
136 // to store bitmap in a square image, so the image will not be stretched
137 // when rendering with point sprites.
138 const Standard_Integer aNumOfBytesInRow = myWidth / 8 + (myWidth % 8 ? 1 : 0);
139 const Standard_Integer aSize = Max (myWidth, myHeight);
140 const Standard_Integer aRowOffset = (aSize - myHeight) / 2 + myMargin;
141 const Standard_Integer aColumnOffset = (aSize - myWidth ) / 2 + myMargin;
142 const Standard_Integer aLowerIndex = myBitMap->Lower();
144 myImage = new Image_PixMap();
145 myImage->InitZero (Image_PixMap::ImgGray, aSize + myMargin * 2, aSize + myMargin * 2);
146 for (Standard_Integer aRowIter = 0; aRowIter < myHeight; aRowIter++)
148 Standard_Byte* anImageRow = myImage->ChangeRow (aRowIter + aRowOffset);
149 for (Standard_Integer aColumnIter = 0; aColumnIter < myWidth; aColumnIter++)
151 Standard_Boolean aBitOn = myBitMap->Value (aLowerIndex + aNumOfBytesInRow * aRowIter + aColumnIter / 8) & (0x80 >> (aColumnIter % 8));
152 anImageRow[aColumnIter + aColumnOffset] = aBitOn ? 255 : 0;
159 // =======================================================================
160 // function : GetImageAlpha
162 // =======================================================================
163 const Handle(Image_PixMap)& Graphic3d_MarkerImage::GetImageAlpha()
165 if (!myImageAlpha.IsNull())
170 if (!myImage.IsNull())
172 if (myImage->Format() == Image_PixMap::ImgGray)
174 myImageAlpha = myImage;
178 myImageAlpha = new Image_PixMap();
179 myImageAlpha->InitZero (Image_PixMap::ImgGray, myImage->Width(), myImage->Height());
180 myImageAlpha->SetTopDown (Standard_False);
181 Quantity_Parameter anAlpha;
182 for (Standard_Size aRowIter = 0; aRowIter < myImage->Height(); aRowIter++)
184 Standard_Byte* anImageRow = myImageAlpha->ChangeRow (aRowIter);
185 for (Standard_Size aColumnIter = 0; aColumnIter < myImage->Width(); aColumnIter++)
187 myImage->PixelColor ((Standard_Integer)aColumnIter, (Standard_Integer)aRowIter, anAlpha);
188 anImageRow[aColumnIter] = Standard_Byte (255.0 * anAlpha);
197 // =======================================================================
198 // function : GetImageId
200 // =======================================================================
201 const TCollection_AsciiString& Graphic3d_MarkerImage::GetImageId() const
206 // =======================================================================
207 // function : GetImageAlphaId
209 // =======================================================================
210 const TCollection_AsciiString& Graphic3d_MarkerImage::GetImageAlphaId() const
212 return myImageAlphaId;
215 // =======================================================================
216 // function : GetTextureSize
218 // =======================================================================
219 void Graphic3d_MarkerImage::GetTextureSize (Standard_Integer& theWidth,
220 Standard_Integer& theHeight) const
223 theHeight = myHeight;