a71a71de |
1 | // Copyright (c) 2017 OPEN CASCADE SAS |
2 | // |
3 | // This file is part of Open CASCADE Technology software library. |
4 | // |
5 | // This library is free software; you can redistribute it and/or modify it under |
6 | // the terms of the GNU Lesser General Public License version 2.1 as published |
7 | // by the Free Software Foundation, with special exception defined in the file |
8 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
9 | // distribution for complete text of the license and disclaimer of any warranty. |
10 | // |
11 | // Alternatively, this file may be used under the terms of Open CASCADE |
12 | // commercial license or contractual agreement. |
13 | |
14 | #ifndef _Quantity_ColorRGBAHasher_HeaderFile |
15 | #define _Quantity_ColorRGBAHasher_HeaderFile |
16 | |
17 | #include <Quantity_ColorRGBA.hxx> |
18 | #include <Quantity_ColorHasher.hxx> |
19 | |
20 | //! Hasher of Quantity_ColorRGBA. |
21 | struct Quantity_ColorRGBAHasher |
22 | { |
23 | |
2b2be3fb |
24 | //! Returns hash code for the given RGBA color, in the range [1, theUpperBound] |
25 | //! @param theColor the RGBA color object which hash code is to be computed |
26 | //! @param theUpperBound the upper bound of the range a computing hash code must be within |
27 | //! @return a computed hash code, in the range [1, theUpperBound] |
a71a71de |
28 | static Standard_Integer HashCode (const Quantity_ColorRGBA& theColor, |
2b2be3fb |
29 | const Standard_Integer theUpperBound) |
a71a71de |
30 | { |
31 | const NCollection_Vec4<float>& aColor = theColor; |
32 | uint32_t aColor32 = (uint32_t(aColor.a() * 255.0f) << 24) |
33 | + (uint32_t(aColor.b() * 255.0f) << 16) |
34 | + (uint32_t(aColor.g() * 255.0f) << 8) |
35 | + uint32_t(aColor.r() * 255.0f); |
2b2be3fb |
36 | return ::HashCode(aColor32, theUpperBound); |
a71a71de |
37 | } |
38 | |
39 | //! Returns true if two colors are equal. |
40 | static Standard_Boolean IsEqual (const Quantity_ColorRGBA& theColor1, |
41 | const Quantity_ColorRGBA& theColor2) |
42 | { |
43 | return theColor1 == theColor2; |
44 | } |
45 | |
46 | }; |
47 | |
48 | #endif // _Quantity_ColorRGBAHasher_HeaderFile |