938d4544 |
1 | // Created on: 2013-11-11 |
2 | // Created by: Anastasia BORISOVA |
d5f74e42 |
3 | // Copyright (c) 2013-2014 OPEN CASCADE SAS |
938d4544 |
4 | // |
973c2be1 |
5 | // This file is part of Open CASCADE Technology software library. |
938d4544 |
6 | // |
d5f74e42 |
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 |
973c2be1 |
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. |
938d4544 |
12 | // |
973c2be1 |
13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
938d4544 |
15 | |
16 | #include <OpenGl_Flipper.hxx> |
0f8c0fb8 |
17 | |
18 | #include <OpenGl_Context.hxx> |
19 | #include <OpenGl_ShaderManager.hxx> |
938d4544 |
20 | #include <OpenGl_Vec.hxx> |
21 | #include <OpenGl_Workspace.hxx> |
22 | |
23 | #include <gp_Ax2.hxx> |
24 | |
25 | // ======================================================================= |
26 | // function : Constructor |
27 | // purpose : |
28 | // ======================================================================= |
29 | OpenGl_Flipper::OpenGl_Flipper (const gp_Ax2& theReferenceSystem) |
30 | : OpenGl_Element(), |
31 | myReferenceOrigin ((Standard_ShortReal )theReferenceSystem.Location().X(), |
32 | (Standard_ShortReal )theReferenceSystem.Location().Y(), |
33 | (Standard_ShortReal )theReferenceSystem.Location().Z(), |
34 | 1.0f), |
35 | myReferenceX ((Standard_ShortReal )theReferenceSystem.XDirection().X(), |
36 | (Standard_ShortReal )theReferenceSystem.XDirection().Y(), |
37 | (Standard_ShortReal )theReferenceSystem.XDirection().Z(), |
38 | 1.0f), |
39 | myReferenceY ((Standard_ShortReal )theReferenceSystem.YDirection().X(), |
40 | (Standard_ShortReal )theReferenceSystem.YDirection().Y(), |
41 | (Standard_ShortReal )theReferenceSystem.YDirection().Z(), |
42 | 1.0f), |
43 | myReferenceZ ((Standard_ShortReal )theReferenceSystem.Axis().Direction().X(), |
44 | (Standard_ShortReal )theReferenceSystem.Axis().Direction().Y(), |
45 | (Standard_ShortReal )theReferenceSystem.Axis().Direction().Z(), |
46 | 1.0f), |
47 | myIsEnabled (Standard_True) |
48 | { |
49 | // |
50 | } |
51 | |
52 | // ======================================================================= |
53 | // function : Release |
54 | // purpose : |
55 | // ======================================================================= |
10b9c7df |
56 | void OpenGl_Flipper::Release (OpenGl_Context*) |
938d4544 |
57 | { |
58 | // |
59 | } |
60 | |
61 | // ======================================================================= |
62 | // function : Render |
63 | // purpose : |
64 | // ======================================================================= |
65 | void OpenGl_Flipper::Render (const Handle(OpenGl_Workspace)& theWorkspace) const |
66 | { |
0f8c0fb8 |
67 | // Check if rendering is to be in immediate mode |
0f8c0fb8 |
68 | const Handle(OpenGl_Context)& aContext = theWorkspace->GetGlContext(); |
938d4544 |
69 | if (!myIsEnabled) |
70 | { |
c827ea3a |
71 | // restore matrix state |
ab9e277f |
72 | aContext->ModelWorldState.Pop(); |
0f8c0fb8 |
73 | |
c827ea3a |
74 | // Apply since we probably in the middle of something. |
ab9e277f |
75 | aContext->ApplyModelWorldMatrix(); |
c827ea3a |
76 | return; |
0f8c0fb8 |
77 | } |
78 | |
ab9e277f |
79 | aContext->ModelWorldState.Push(); |
80 | |
81 | OpenGl_Mat4 aModelWorldMatrix; |
82 | aModelWorldMatrix.Convert (aContext->ModelWorldState.Current()); |
83 | |
84 | OpenGl_Mat4 aMatrixMV = aContext->WorldViewState.Current() * aModelWorldMatrix; |
938d4544 |
85 | |
86 | const OpenGl_Vec4 aMVReferenceOrigin = aMatrixMV * myReferenceOrigin; |
87 | const OpenGl_Vec4 aMVReferenceX = aMatrixMV * OpenGl_Vec4 (myReferenceX.xyz() + myReferenceOrigin.xyz(), 1.0f); |
88 | const OpenGl_Vec4 aMVReferenceY = aMatrixMV * OpenGl_Vec4 (myReferenceY.xyz() + myReferenceOrigin.xyz(), 1.0f); |
89 | const OpenGl_Vec4 aMVReferenceZ = aMatrixMV * OpenGl_Vec4 (myReferenceZ.xyz() + myReferenceOrigin.xyz(), 1.0f); |
90 | |
91 | const OpenGl_Vec4 aDirX = aMVReferenceX - aMVReferenceOrigin; |
92 | const OpenGl_Vec4 aDirY = aMVReferenceY - aMVReferenceOrigin; |
93 | const OpenGl_Vec4 aDirZ = aMVReferenceZ - aMVReferenceOrigin; |
94 | |
95 | Standard_Boolean isReversedX = aDirX.xyz().Dot (OpenGl_Vec3::DX()) < 0.0f; |
96 | Standard_Boolean isReversedY = aDirY.xyz().Dot (OpenGl_Vec3::DY()) < 0.0f; |
97 | Standard_Boolean isReversedZ = aDirZ.xyz().Dot (OpenGl_Vec3::DZ()) < 0.0f; |
98 | |
99 | // compute flipping (rotational transform) |
100 | OpenGl_Mat4 aTransform; |
101 | if ((isReversedX || isReversedY) && !isReversedZ) |
102 | { |
103 | // invert by Z axis: left, up vectors mirrored |
104 | aTransform.SetColumn (0, -aTransform.GetColumn (0).xyz()); |
105 | aTransform.SetColumn (1, -aTransform.GetColumn (1).xyz()); |
106 | } |
107 | else if (isReversedY && isReversedZ) |
108 | { |
109 | // rotate by X axis: up, forward vectors mirrored |
110 | aTransform.SetColumn (1, -aTransform.GetColumn (1).xyz()); |
111 | aTransform.SetColumn (2, -aTransform.GetColumn (2).xyz()); |
112 | } |
113 | else if (isReversedZ) |
114 | { |
115 | // rotate by Y axis: left, forward vectors mirrored |
116 | aTransform.SetColumn (0, -aTransform.GetColumn (0).xyz()); |
117 | aTransform.SetColumn (2, -aTransform.GetColumn (2).xyz()); |
118 | } |
119 | else |
120 | { |
121 | return; |
122 | } |
123 | |
124 | // do rotation in origin around reference system "forward" direction |
125 | OpenGl_Mat4 aRefAxes; |
126 | OpenGl_Mat4 aRefInv; |
127 | aRefAxes.SetColumn (0, myReferenceX.xyz()); |
128 | aRefAxes.SetColumn (1, myReferenceY.xyz()); |
129 | aRefAxes.SetColumn (2, myReferenceZ.xyz()); |
130 | aRefAxes.SetColumn (3, myReferenceOrigin.xyz()); |
131 | aRefAxes.Inverted (aRefInv); |
132 | |
133 | aTransform = aRefAxes * aTransform * aRefInv; |
134 | |
135 | // transform model-view matrix |
ab9e277f |
136 | aModelWorldMatrix = aModelWorldMatrix * aTransform; |
938d4544 |
137 | |
138 | // load transformed model-view matrix |
ab9e277f |
139 | aContext->ModelWorldState.SetCurrent (aModelWorldMatrix); |
140 | aContext->ApplyModelWorldMatrix(); |
938d4544 |
141 | } |
bc73b006 |
142 | |
143 | // ======================================================================= |
144 | // function : DumpJson |
145 | // purpose : |
146 | // ======================================================================= |
147 | void OpenGl_Flipper::DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth) const |
148 | { |
149 | OCCT_DUMP_CLASS_BEGIN (theOStream, OpenGl_Flipper) |
150 | |
151 | OCCT_DUMP_BASE_CLASS (theOStream, theDepth, OpenGl_Element) |
152 | } |