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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 | |
27 | IMPLEMENT_STANDARD_HANDLE (Graphic3d_MarkerImage, Standard_Transient) |
28 | IMPLEMENT_STANDARD_RTTIEXT(Graphic3d_MarkerImage, Standard_Transient) |
29 | |
30 | // ======================================================================= |
31 | // function : Graphic3d_MarkerImage |
32 | // purpose : |
33 | // ======================================================================= |
34 | Graphic3d_MarkerImage::Graphic3d_MarkerImage (const Handle(Image_PixMap)& theImage) |
35 | : myBitMap (NULL), |
36 | myImage (theImage), |
37 | myImageAlpha (NULL), |
38 | myMargin (1), |
39 | myWidth ((Standard_Integer )theImage->Width()), |
40 | myHeight ((Standard_Integer )theImage->Height()) |
41 | { |
42 | myImageId = TCollection_AsciiString ("Graphic3d_MarkerImage_") |
43 | + TCollection_AsciiString (Standard_Atomic_Increment (&THE_MARKER_IMAGE_COUNTER)); |
44 | |
45 | myImageAlphaId = TCollection_AsciiString ("Graphic3d_MarkerImageAlpha_") |
46 | + TCollection_AsciiString (THE_MARKER_IMAGE_COUNTER); |
47 | } |
48 | |
49 | // ======================================================================= |
50 | // function : Graphic3d_MarkerImage |
51 | // purpose : |
52 | // ======================================================================= |
53 | Graphic3d_MarkerImage::Graphic3d_MarkerImage (const Handle(TColStd_HArray1OfByte)& theBitMap, |
54 | const Standard_Integer& theWidth, |
55 | const Standard_Integer& theHeight) |
56 | : myBitMap (theBitMap), |
57 | myImage (NULL), |
58 | myImageAlpha (NULL), |
59 | myMargin (1), |
60 | myWidth (theWidth), |
61 | myHeight (theHeight) |
62 | { |
63 | myImageId = TCollection_AsciiString ("Graphic3d_MarkerImage_") |
64 | + TCollection_AsciiString (Standard_Atomic_Increment (&THE_MARKER_IMAGE_COUNTER)); |
65 | |
66 | myImageAlphaId = TCollection_AsciiString ("Graphic3d_MarkerImageAlpha_") |
67 | + TCollection_AsciiString (THE_MARKER_IMAGE_COUNTER); |
68 | } |
69 | |
70 | // ======================================================================= |
71 | // function : GetBitMapArray |
72 | // purpose : |
73 | // ======================================================================= |
74 | Handle(TColStd_HArray1OfByte) Graphic3d_MarkerImage::GetBitMapArray (const Standard_Real& theAlphaValue) const |
75 | { |
76 | if (!myBitMap.IsNull()) |
77 | { |
78 | return myBitMap; |
79 | } |
80 | |
81 | Handle(TColStd_HArray1OfByte) aBitMap; |
82 | if (myImage.IsNull()) |
83 | { |
84 | return aBitMap; |
85 | } |
86 | |
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); |
92 | aBitMap->Init (0); |
93 | for (Standard_Integer aRow = 0; aRow < aHeight; aRow++) |
94 | { |
95 | for (Standard_Integer aColumn = 0; aColumn < aWidth; aColumn++) |
96 | { |
97 | Quantity_Parameter anAlphaValue; |
98 | Quantity_Color aColor = myImage->PixelColor (aColumn, aRow, anAlphaValue); |
99 | Standard_Boolean aBitOn = Standard_False; |
100 | |
101 | if (myImage->Format() == Image_PixMap::ImgGray) |
102 | { |
103 | aBitOn = aColor.Red() > theAlphaValue; |
104 | } |
105 | else |
106 | { |
107 | aBitOn = anAlphaValue > theAlphaValue; |
108 | } |
109 | |
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110 | Standard_Integer anIndex = aNumOfBytesInRow * aRow + aColumn / 8; |
111 | aBitMap->SetValue (anIndex, (Standard_Byte)(aBitMap->Value (anIndex) + |
112 | (aBitOn ? (0x80 >> (aColumn % 8)) : 0))); |
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113 | } |
114 | } |
115 | |
116 | return aBitMap; |
117 | } |
118 | |
119 | // ======================================================================= |
120 | // function : GetImage |
121 | // purpose : |
122 | // ======================================================================= |
123 | const Handle(Image_PixMap)& Graphic3d_MarkerImage::GetImage() |
124 | { |
125 | if (!myImage.IsNull()) |
126 | { |
127 | return myImage; |
128 | } |
129 | |
130 | if (myBitMap.IsNull()) |
131 | { |
132 | return myImage; |
133 | } |
134 | |
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(); |
143 | |
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++) |
147 | { |
148 | Standard_Byte* anImageRow = myImage->ChangeRow (aRowIter + aRowOffset); |
149 | for (Standard_Integer aColumnIter = 0; aColumnIter < myWidth; aColumnIter++) |
150 | { |
151 | Standard_Boolean aBitOn = myBitMap->Value (aLowerIndex + aNumOfBytesInRow * aRowIter + aColumnIter / 8) & (0x80 >> (aColumnIter % 8)); |
152 | anImageRow[aColumnIter + aColumnOffset] = aBitOn ? 255 : 0; |
153 | } |
154 | } |
155 | |
156 | return myImage; |
157 | } |
158 | |
159 | // ======================================================================= |
160 | // function : GetImageAlpha |
161 | // purpose : |
162 | // ======================================================================= |
163 | const Handle(Image_PixMap)& Graphic3d_MarkerImage::GetImageAlpha() |
164 | { |
165 | if (!myImageAlpha.IsNull()) |
166 | { |
167 | return myImageAlpha; |
168 | } |
169 | |
170 | if (!myImage.IsNull()) |
171 | { |
172 | if (myImage->Format() == Image_PixMap::ImgGray) |
173 | { |
174 | myImageAlpha = myImage; |
175 | } |
176 | else |
177 | { |
178 | myImageAlpha = new Image_PixMap(); |
179 | myImageAlpha->InitZero (Image_PixMap::ImgGray, myImage->Width(), myImage->Height()); |
180 | myImageAlpha->SetTopDown (Standard_False); |
181 | Quantity_Parameter anAlpha; |
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182 | for (Standard_Size aRowIter = 0; aRowIter < myImage->Height(); aRowIter++) |
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183 | { |
184 | Standard_Byte* anImageRow = myImageAlpha->ChangeRow (aRowIter); |
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185 | for (Standard_Size aColumnIter = 0; aColumnIter < myImage->Width(); aColumnIter++) |
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186 | { |
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187 | myImage->PixelColor ((Standard_Integer)aColumnIter, (Standard_Integer)aRowIter, anAlpha); |
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188 | anImageRow[aColumnIter] = Standard_Byte (255.0 * anAlpha); |
189 | } |
190 | } |
191 | } |
192 | } |
193 | |
194 | return myImageAlpha; |
195 | } |
196 | |
197 | // ======================================================================= |
198 | // function : GetImageId |
199 | // purpose : |
200 | // ======================================================================= |
201 | const TCollection_AsciiString& Graphic3d_MarkerImage::GetImageId() const |
202 | { |
203 | return myImageId; |
204 | } |
205 | |
206 | // ======================================================================= |
207 | // function : GetImageAlphaId |
208 | // purpose : |
209 | // ======================================================================= |
210 | const TCollection_AsciiString& Graphic3d_MarkerImage::GetImageAlphaId() const |
211 | { |
212 | return myImageAlphaId; |
213 | } |
214 | |
215 | // ======================================================================= |
216 | // function : GetTextureSize |
217 | // purpose : |
218 | // ======================================================================= |
219 | void Graphic3d_MarkerImage::GetTextureSize (Standard_Integer& theWidth, |
220 | Standard_Integer& theHeight) const |
221 | { |
222 | theWidth = myWidth; |
223 | theHeight = myHeight; |
224 | } |