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1 | // Created on: 2013-09-05 |
2 | // Created by: Anton POLETAEV |
3 | // Copyright (c) 2013 OPEN CASCADE SAS |
4 | // |
5 | // The content of this file is subject to the Open CASCADE Technology Public |
6 | // License Version 6.5 (the "License"). You may not use the content of this file |
7 | // except in compliance with the License. Please obtain a copy of the License |
8 | // at http://www.opencascade.org and read it completely before using this file. |
9 | // |
10 | // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its |
11 | // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. |
12 | // |
13 | // The Original Code and all software distributed under the License is |
14 | // distributed on an "AS IS" basis, without warranty of any kind, and the |
15 | // Initial Developer hereby disclaims all such warranties, including without |
16 | // limitation, any warranties of merchantability, fitness for a particular |
17 | // purpose or non-infringement. Please see the License for the specific terms |
18 | // and conditions governing the rights and limitations under the License. |
19 | |
20 | #ifndef _OpenGl_CappingAlgo_H__ |
21 | #define _OpenGl_CappingAlgo_H__ |
22 | |
23 | #include <OpenGl_RenderFilter.hxx> |
24 | #include <OpenGl_Group.hxx> |
25 | |
26 | // Forward declaration |
27 | class Handle(OpenGl_Workspace); |
28 | class Handle(Graphic3d_ClipPlane); |
29 | |
30 | DEFINE_STANDARD_HANDLE (OpenGl_CappingAlgoFilter, OpenGl_RenderFilter) |
31 | |
32 | //! Capping surface rendering algorithm. |
33 | class OpenGl_CappingAlgo |
34 | { |
35 | public: |
36 | |
37 | //! Draw capping surfaces by OpenGl for the clipping planes |
38 | //! enabled in current context state. Depth buffer must be generated |
39 | //! for the passed groups. |
40 | //! @param theWorkspace [in] the GL workspace, context state. |
41 | //! @param theGroups [in] the group of primitives to be capped. |
42 | Standard_EXPORT static void RenderCapping (const Handle(OpenGl_Workspace)& theWorkspace, |
43 | const OpenGl_ListOfGroup& theGroups); |
44 | |
45 | //! Render infinite capping plane. |
46 | //! @param theWorkspace [in] the GL workspace, context state. |
47 | //! @param thePlane [in] the graphical plane, for which the capping surface is rendered. |
48 | Standard_EXPORT static void RenderPlane (const Handle(OpenGl_Workspace)& theWorkspace, |
49 | const Handle(Graphic3d_ClipPlane)& thePlane); |
50 | |
51 | private: |
52 | |
53 | //! Init algorithm. |
54 | static void Init(); |
55 | |
56 | //! @return capping algorithm rendering filter. |
57 | static const Handle(OpenGl_RenderFilter)& CappingFilter() { return myRenderFilter; } |
58 | |
59 | //! @return face aspect for front face culling mode. |
60 | static const OpenGl_AspectFace* FrontCulling() { return &myFrontCulling; } |
61 | |
62 | //! @return face aspect for none culling mode. |
63 | static const OpenGl_AspectFace* NoneCulling() { return &myNoneCulling; } |
64 | |
65 | private: |
66 | |
67 | static Handle(OpenGl_RenderFilter) myRenderFilter; |
68 | static OpenGl_AspectFace myFrontCulling; |
69 | static OpenGl_AspectFace myNoneCulling; |
70 | static Standard_Boolean myIsInit; |
71 | }; |
72 | |
73 | //! Graphical capping rendering algorithm filter. |
74 | //! Filters out everything excepth shaded primitives. |
75 | class OpenGl_CappingAlgoFilter : public OpenGl_RenderFilter |
76 | { |
77 | public: |
78 | |
79 | //! Default constructor. |
80 | OpenGl_CappingAlgoFilter() {} |
81 | |
82 | //! Checks whether the element can be rendered or not. |
83 | //! @param theElement [in] the element to check. |
84 | //! @return True if element can be rendered. |
85 | virtual Standard_Boolean CanRender (const OpenGl_Element* theElement); |
86 | |
87 | public: |
88 | |
89 | DEFINE_STANDARD_RTTI(OpenGl_CappingAlgoFilter) |
90 | }; |
91 | |
92 | #endif |