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1 | // Created on: 2015-01-16 |
2 | // Created by: Anastasia BORISOVA |
3 | // Copyright (c) 2015 OPEN CASCADE SAS |
4 | // |
5 | // This file is part of Open CASCADE Technology software library. |
6 | // |
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. |
12 | // |
13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
15 | |
16 | #ifndef OpenGl_BackgroundArray_Header |
17 | #define OpenGl_BackgroundArray_Header |
18 | |
19 | #include <Aspect_GradientFillMethod.hxx> |
20 | #include <Aspect_FillMethod.hxx> |
21 | #include <Graphic3d_TypeOfBackground.hxx> |
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22 | #include <OpenGl_Aspects.hxx> |
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23 | #include <OpenGl_PrimitiveArray.hxx> |
24 | #include <OpenGl_Vec.hxx> |
25 | #include <OpenGl_Workspace.hxx> |
26 | |
27 | //! Tool class for generating reusable data for |
28 | //! gradient or texture background rendering. |
29 | class OpenGl_BackgroundArray : public OpenGl_PrimitiveArray |
30 | { |
31 | public: |
32 | |
33 | //! Main constructor. |
34 | Standard_EXPORT OpenGl_BackgroundArray (const Graphic3d_TypeOfBackground theType); |
35 | |
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36 | //! Render primitives to the window |
37 | Standard_EXPORT virtual void Render (const Handle(OpenGl_Workspace)& theWorkspace) const Standard_OVERRIDE; |
38 | |
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39 | //! Check if background parameters are set properly |
40 | Standard_EXPORT bool IsDefined() const; |
41 | |
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42 | //! Sets background texture parameters |
43 | Standard_EXPORT void SetTextureParameters (const Aspect_FillMethod theFillMethod); |
44 | |
45 | //! Sets texture fill method |
46 | Standard_EXPORT void SetTextureFillMethod (const Aspect_FillMethod theFillMethod); |
47 | |
48 | //! Gets background texture fill method |
49 | Aspect_FillMethod TextureFillMethod() const { return myFillMethod; } |
50 | |
51 | //! Gets background gradient fill method |
52 | Aspect_GradientFillMethod GradientFillMethod() const { return myGradientParams.type; } |
53 | |
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54 | //! Returns color of gradient background for the given index. |
55 | const OpenGl_Vec4& GradientColor (const Standard_Integer theIndex) const { return (&myGradientParams.color1)[theIndex]; } |
56 | |
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57 | //! Sets type of gradient fill method |
58 | Standard_EXPORT void SetGradientFillMethod (const Aspect_GradientFillMethod theType); |
59 | |
60 | //! Sets background gradient parameters |
61 | Standard_EXPORT void SetGradientParameters (const Quantity_Color& theColor1, |
62 | const Quantity_Color& theColor2, |
63 | const Aspect_GradientFillMethod theType); |
64 | |
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65 | protected: //! @name Internal structure for storing gradient parameters |
66 | |
67 | struct OpenGl_GradientParameters |
68 | { |
69 | OpenGl_Vec4 color1; |
70 | OpenGl_Vec4 color2; |
71 | Aspect_GradientFillMethod type; |
72 | }; |
73 | |
74 | protected: |
75 | |
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76 | //! Fill attributes arrays for background array according to its type: |
77 | //! - for gradient background its attributes consist of colors and gradient coordinates |
78 | //! - for texture one its attributes consist of position and texture coordinates. |
79 | Standard_EXPORT Standard_Boolean init (const Handle(OpenGl_Workspace)& theWorkspace) const; |
80 | |
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81 | //! Initializes gradient arrays. |
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82 | Standard_EXPORT Standard_Boolean createGradientArray() const; |
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83 | |
84 | //! Initializes texture arrays. |
85 | //! @param theWorkspace OpenGl workspace that stores texture in the current enabled face aspect. |
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86 | Standard_EXPORT Standard_Boolean createTextureArray (const Handle(OpenGl_Workspace)& theWorkspace) const; |
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87 | |
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88 | //! Initializes cubemap arrays. |
89 | Standard_EXPORT Standard_Boolean createCubeMapArray() const; |
90 | |
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91 | //! Marks array parameters as changed, |
92 | //! on next rendering stage array data is to be updated. |
93 | Standard_EXPORT void invalidateData(); |
94 | |
95 | protected: |
96 | |
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97 | Graphic3d_TransformPers myTrsfPers; //!< transformation persistence |
98 | Graphic3d_TypeOfBackground myType; //!< Type of background: texture or gradient. |
99 | Aspect_FillMethod myFillMethod; //!< Texture parameters |
100 | mutable OpenGl_GradientParameters myGradientParams; //!< Gradient parameters |
101 | mutable Standard_Integer myViewWidth; //!< view width used for array initialization |
102 | mutable Standard_Integer myViewHeight; //!< view height used for array initialization |
103 | mutable Standard_Boolean myToUpdate; //!< Shows if array parameters were changed and data (myAttribs storage) is to be updated |
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104 | |
105 | }; |
106 | |
107 | #endif // OpenGl_BackgroundArray_Header |