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1 | // Copyright (c) 2019 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 _OpenGl_AspectsSprite_Header |
15 | #define _OpenGl_AspectsSprite_Header |
16 | |
17 | #include <Graphic3d_Aspects.hxx> |
18 | #include <Graphic3d_TextureMap.hxx> |
19 | |
20 | class OpenGl_Context; |
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21 | class OpenGl_PointSprite; |
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22 | |
23 | //! OpenGl resources for custom point sprites. |
24 | class OpenGl_AspectsSprite |
25 | { |
26 | public: |
27 | DEFINE_STANDARD_ALLOC |
28 | public: |
29 | //! Empty constructor. |
30 | OpenGl_AspectsSprite() : myMarkerSize (1.0f), myIsSpriteReady (Standard_False) {} |
31 | |
32 | Standard_ShortReal MarkerSize() const { return myMarkerSize; } |
33 | |
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34 | //! Return TRUE if resource is up-to-date. |
35 | bool IsReady() const { return myIsSpriteReady; } |
36 | |
37 | //! Invalidate resource state. |
38 | void Invalidate() { myIsSpriteReady = false; } |
39 | |
40 | //! Return TRUE if OpenGl point sprite resource defines texture. |
41 | Standard_EXPORT bool HasPointSprite (const Handle(OpenGl_Context)& theCtx, |
42 | const Handle(Graphic3d_Aspects)& theAspects); |
43 | |
44 | //! Return TRUE if OpenGl point sprite resource defined by obsolete Display List (bitmap). |
45 | Standard_EXPORT bool IsDisplayListSprite (const Handle(OpenGl_Context)& theCtx, |
46 | const Handle(Graphic3d_Aspects)& theAspects); |
47 | |
48 | //! Return sprite. |
49 | Standard_EXPORT const Handle(OpenGl_PointSprite)& Sprite (const Handle(OpenGl_Context)& theCtx, |
50 | const Handle(Graphic3d_Aspects)& theAspects, |
51 | bool theIsAlphaSprite); |
52 | |
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53 | //! Update texture resource up-to-date state. |
54 | Standard_EXPORT void UpdateRediness (const Handle(Graphic3d_Aspects)& theAspect); |
55 | |
56 | //! Release texture resource. |
57 | Standard_EXPORT void Release (OpenGl_Context* theCtx); |
58 | |
59 | private: |
60 | |
61 | //! Build texture resources. |
62 | Standard_EXPORT void build (const Handle(OpenGl_Context)& theCtx, |
63 | const Handle(Graphic3d_MarkerImage)& theMarkerImage, |
64 | Aspect_TypeOfMarker theType, |
65 | Standard_ShortReal theScale, |
66 | const Graphic3d_Vec4& theColor, |
67 | Standard_ShortReal& theMarkerSize); |
68 | |
69 | //! Generate resource keys for a sprite. |
70 | static void spriteKeys (const Handle(Graphic3d_MarkerImage)& theMarkerImage, |
71 | Aspect_TypeOfMarker theType, |
72 | Standard_ShortReal theScale, |
73 | const Graphic3d_Vec4& theColor, |
74 | TCollection_AsciiString& theKey, |
75 | TCollection_AsciiString& theKeyA); |
76 | |
77 | private: |
78 | |
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79 | Handle(OpenGl_PointSprite) mySprite; |
80 | Handle(OpenGl_PointSprite) mySpriteA; |
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81 | Standard_ShortReal myMarkerSize; |
82 | Standard_Boolean myIsSpriteReady; |
83 | |
84 | }; |
85 | |
86 | #endif // _OpenGl_Aspects_Header |