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1 | // Created on: 2013-06-25 |
2 | // Created by: Dmitry BOBYLEV |
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3 | // Copyright (c) 2013-2014 OPEN CASCADE SAS |
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4 | // |
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5 | // This file is part of Open CASCADE Technology software library. |
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6 | // |
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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 |
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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. |
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12 | // |
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13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
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15 | |
16 | #include <Graphic3d_MarkerImage.hxx> |
17 | |
18 | #include <Image_PixMap.hxx> |
19 | #include <Standard_Atomic.hxx> |
20 | #include <TColStd_HArray1OfByte.hxx> |
21 | |
22 | namespace |
23 | { |
24 | static volatile Standard_Integer THE_MARKER_IMAGE_COUNTER = 0; |
25 | }; |
26 | |
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27 | |
28 | // ======================================================================= |
29 | // function : Graphic3d_MarkerImage |
30 | // purpose : |
31 | // ======================================================================= |
32 | Graphic3d_MarkerImage::Graphic3d_MarkerImage (const Handle(Image_PixMap)& theImage) |
33 | : myBitMap (NULL), |
34 | myImage (theImage), |
35 | myImageAlpha (NULL), |
36 | myMargin (1), |
37 | myWidth ((Standard_Integer )theImage->Width()), |
38 | myHeight ((Standard_Integer )theImage->Height()) |
39 | { |
40 | myImageId = TCollection_AsciiString ("Graphic3d_MarkerImage_") |
41 | + TCollection_AsciiString (Standard_Atomic_Increment (&THE_MARKER_IMAGE_COUNTER)); |
42 | |
43 | myImageAlphaId = TCollection_AsciiString ("Graphic3d_MarkerImageAlpha_") |
44 | + TCollection_AsciiString (THE_MARKER_IMAGE_COUNTER); |
45 | } |
46 | |
47 | // ======================================================================= |
48 | // function : Graphic3d_MarkerImage |
49 | // purpose : |
50 | // ======================================================================= |
51 | Graphic3d_MarkerImage::Graphic3d_MarkerImage (const Handle(TColStd_HArray1OfByte)& theBitMap, |
52 | const Standard_Integer& theWidth, |
53 | const Standard_Integer& theHeight) |
54 | : myBitMap (theBitMap), |
55 | myImage (NULL), |
56 | myImageAlpha (NULL), |
57 | myMargin (1), |
58 | myWidth (theWidth), |
59 | myHeight (theHeight) |
60 | { |
61 | myImageId = TCollection_AsciiString ("Graphic3d_MarkerImage_") |
62 | + TCollection_AsciiString (Standard_Atomic_Increment (&THE_MARKER_IMAGE_COUNTER)); |
63 | |
64 | myImageAlphaId = TCollection_AsciiString ("Graphic3d_MarkerImageAlpha_") |
65 | + TCollection_AsciiString (THE_MARKER_IMAGE_COUNTER); |
66 | } |
67 | |
68 | // ======================================================================= |
69 | // function : GetBitMapArray |
70 | // purpose : |
71 | // ======================================================================= |
72 | Handle(TColStd_HArray1OfByte) Graphic3d_MarkerImage::GetBitMapArray (const Standard_Real& theAlphaValue) const |
73 | { |
74 | if (!myBitMap.IsNull()) |
75 | { |
76 | return myBitMap; |
77 | } |
78 | |
79 | Handle(TColStd_HArray1OfByte) aBitMap; |
80 | if (myImage.IsNull()) |
81 | { |
82 | return aBitMap; |
83 | } |
84 | |
85 | const Standard_Integer aNumOfBytesInRow = (Standard_Integer )(myImage->Width() / 8) + (myImage->Width() % 8 ? 1 : 0); |
86 | const Standard_Integer aNumOfBytes = (Standard_Integer )(aNumOfBytesInRow * myImage->Height()); |
87 | const Standard_Integer aHeight = (Standard_Integer )myImage->Height(); |
88 | const Standard_Integer aWidth = (Standard_Integer )myImage->Width(); |
89 | aBitMap = new TColStd_HArray1OfByte (0, aNumOfBytes - 1); |
90 | aBitMap->Init (0); |
91 | for (Standard_Integer aRow = 0; aRow < aHeight; aRow++) |
92 | { |
93 | for (Standard_Integer aColumn = 0; aColumn < aWidth; aColumn++) |
94 | { |
95 | Quantity_Parameter anAlphaValue; |
96 | Quantity_Color aColor = myImage->PixelColor (aColumn, aRow, anAlphaValue); |
97 | Standard_Boolean aBitOn = Standard_False; |
98 | |
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99 | if (myImage->Format() == Image_PixMap::ImgAlpha) |
100 | { |
101 | aBitOn = anAlphaValue > theAlphaValue; |
102 | } |
103 | else if (myImage->Format() == Image_PixMap::ImgGray) |
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104 | { |
105 | aBitOn = aColor.Red() > theAlphaValue; |
106 | } |
107 | else |
108 | { |
109 | aBitOn = anAlphaValue > theAlphaValue; |
110 | } |
111 | |
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112 | Standard_Integer anIndex = aNumOfBytesInRow * aRow + aColumn / 8; |
113 | aBitMap->SetValue (anIndex, (Standard_Byte)(aBitMap->Value (anIndex) + |
114 | (aBitOn ? (0x80 >> (aColumn % 8)) : 0))); |
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115 | } |
116 | } |
117 | |
118 | return aBitMap; |
119 | } |
120 | |
121 | // ======================================================================= |
122 | // function : GetImage |
123 | // purpose : |
124 | // ======================================================================= |
125 | const Handle(Image_PixMap)& Graphic3d_MarkerImage::GetImage() |
126 | { |
127 | if (!myImage.IsNull()) |
128 | { |
129 | return myImage; |
130 | } |
131 | |
132 | if (myBitMap.IsNull()) |
133 | { |
134 | return myImage; |
135 | } |
136 | |
137 | // Converting a byte array to bitmap image. Row and column offsets are used |
138 | // to store bitmap in a square image, so the image will not be stretched |
139 | // when rendering with point sprites. |
140 | const Standard_Integer aNumOfBytesInRow = myWidth / 8 + (myWidth % 8 ? 1 : 0); |
141 | const Standard_Integer aSize = Max (myWidth, myHeight); |
142 | const Standard_Integer aRowOffset = (aSize - myHeight) / 2 + myMargin; |
143 | const Standard_Integer aColumnOffset = (aSize - myWidth ) / 2 + myMargin; |
144 | const Standard_Integer aLowerIndex = myBitMap->Lower(); |
145 | |
146 | myImage = new Image_PixMap(); |
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147 | myImage->InitZero (Image_PixMap::ImgAlpha, aSize + myMargin * 2, aSize + myMargin * 2); |
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148 | for (Standard_Integer aRowIter = 0; aRowIter < myHeight; aRowIter++) |
149 | { |
150 | Standard_Byte* anImageRow = myImage->ChangeRow (aRowIter + aRowOffset); |
151 | for (Standard_Integer aColumnIter = 0; aColumnIter < myWidth; aColumnIter++) |
152 | { |
153 | Standard_Boolean aBitOn = myBitMap->Value (aLowerIndex + aNumOfBytesInRow * aRowIter + aColumnIter / 8) & (0x80 >> (aColumnIter % 8)); |
154 | anImageRow[aColumnIter + aColumnOffset] = aBitOn ? 255 : 0; |
155 | } |
156 | } |
157 | |
158 | return myImage; |
159 | } |
160 | |
161 | // ======================================================================= |
162 | // function : GetImageAlpha |
163 | // purpose : |
164 | // ======================================================================= |
165 | const Handle(Image_PixMap)& Graphic3d_MarkerImage::GetImageAlpha() |
166 | { |
167 | if (!myImageAlpha.IsNull()) |
168 | { |
169 | return myImageAlpha; |
170 | } |
171 | |
172 | if (!myImage.IsNull()) |
173 | { |
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174 | if (myImage->Format() == Image_PixMap::ImgGray |
175 | || myImage->Format() == Image_PixMap::ImgAlpha) |
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176 | { |
177 | myImageAlpha = myImage; |
178 | } |
179 | else |
180 | { |
181 | myImageAlpha = new Image_PixMap(); |
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182 | myImageAlpha->InitZero (Image_PixMap::ImgAlpha, myImage->Width(), myImage->Height()); |
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183 | myImageAlpha->SetTopDown (Standard_False); |
184 | Quantity_Parameter anAlpha; |
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185 | for (Standard_Size aRowIter = 0; aRowIter < myImage->Height(); aRowIter++) |
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186 | { |
187 | Standard_Byte* anImageRow = myImageAlpha->ChangeRow (aRowIter); |
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188 | for (Standard_Size aColumnIter = 0; aColumnIter < myImage->Width(); aColumnIter++) |
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189 | { |
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190 | myImage->PixelColor ((Standard_Integer)aColumnIter, (Standard_Integer)aRowIter, anAlpha); |
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191 | anImageRow[aColumnIter] = Standard_Byte (255.0 * anAlpha); |
192 | } |
193 | } |
194 | } |
195 | } |
196 | |
197 | return myImageAlpha; |
198 | } |
199 | |
200 | // ======================================================================= |
201 | // function : GetImageId |
202 | // purpose : |
203 | // ======================================================================= |
204 | const TCollection_AsciiString& Graphic3d_MarkerImage::GetImageId() const |
205 | { |
206 | return myImageId; |
207 | } |
208 | |
209 | // ======================================================================= |
210 | // function : GetImageAlphaId |
211 | // purpose : |
212 | // ======================================================================= |
213 | const TCollection_AsciiString& Graphic3d_MarkerImage::GetImageAlphaId() const |
214 | { |
215 | return myImageAlphaId; |
216 | } |
217 | |
218 | // ======================================================================= |
219 | // function : GetTextureSize |
220 | // purpose : |
221 | // ======================================================================= |
222 | void Graphic3d_MarkerImage::GetTextureSize (Standard_Integer& theWidth, |
223 | Standard_Integer& theHeight) const |
224 | { |
225 | theWidth = myWidth; |
226 | theHeight = myHeight; |
227 | } |