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1 | // Created on: 2013-09-05 |
2 | // Created by: Anton POLETAEV |
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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 | #ifndef _OpenGl_CappingAlgo_H__ |
17 | #define _OpenGl_CappingAlgo_H__ |
18 | |
19 | #include <OpenGl_RenderFilter.hxx> |
20 | #include <OpenGl_Group.hxx> |
21 | |
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22 | #include <Graphic3d_SequenceOfGroup.hxx> |
23 | |
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24 | // Forward declaration |
25 | class Handle(OpenGl_Workspace); |
26 | class Handle(Graphic3d_ClipPlane); |
27 | |
28 | DEFINE_STANDARD_HANDLE (OpenGl_CappingAlgoFilter, OpenGl_RenderFilter) |
29 | |
30 | //! Capping surface rendering algorithm. |
31 | class OpenGl_CappingAlgo |
32 | { |
33 | public: |
34 | |
35 | //! Draw capping surfaces by OpenGl for the clipping planes |
36 | //! enabled in current context state. Depth buffer must be generated |
37 | //! for the passed groups. |
38 | //! @param theWorkspace [in] the GL workspace, context state. |
39 | //! @param theGroups [in] the group of primitives to be capped. |
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40 | Standard_EXPORT static void RenderCapping (const Handle(OpenGl_Workspace)& theWorkspace, |
41 | const Graphic3d_SequenceOfGroup& theGroups); |
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42 | |
43 | //! Render infinite capping plane. |
44 | //! @param theWorkspace [in] the GL workspace, context state. |
45 | //! @param thePlane [in] the graphical plane, for which the capping surface is rendered. |
46 | Standard_EXPORT static void RenderPlane (const Handle(OpenGl_Workspace)& theWorkspace, |
47 | const Handle(Graphic3d_ClipPlane)& thePlane); |
48 | |
49 | private: |
50 | |
51 | //! Init algorithm. |
52 | static void Init(); |
53 | |
54 | //! @return capping algorithm rendering filter. |
55 | static const Handle(OpenGl_RenderFilter)& CappingFilter() { return myRenderFilter; } |
56 | |
57 | //! @return face aspect for front face culling mode. |
58 | static const OpenGl_AspectFace* FrontCulling() { return &myFrontCulling; } |
59 | |
60 | //! @return face aspect for none culling mode. |
61 | static const OpenGl_AspectFace* NoneCulling() { return &myNoneCulling; } |
62 | |
63 | private: |
64 | |
65 | static Handle(OpenGl_RenderFilter) myRenderFilter; |
66 | static OpenGl_AspectFace myFrontCulling; |
67 | static OpenGl_AspectFace myNoneCulling; |
68 | static Standard_Boolean myIsInit; |
69 | }; |
70 | |
71 | //! Graphical capping rendering algorithm filter. |
72 | //! Filters out everything excepth shaded primitives. |
73 | class OpenGl_CappingAlgoFilter : public OpenGl_RenderFilter |
74 | { |
75 | public: |
76 | |
77 | //! Default constructor. |
78 | OpenGl_CappingAlgoFilter() {} |
79 | |
80 | //! Checks whether the element can be rendered or not. |
81 | //! @param theElement [in] the element to check. |
82 | //! @return True if element can be rendered. |
83 | virtual Standard_Boolean CanRender (const OpenGl_Element* theElement); |
84 | |
85 | public: |
86 | |
87 | DEFINE_STANDARD_RTTI(OpenGl_CappingAlgoFilter) |
88 | }; |
89 | |
90 | #endif |