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32
33 #ifdef HAVE_CONFIG_H
34 #include <config.h>
35 #endif // HAVE_CONFIG_H
36
37 #ifdef HAVE_VRML97
38
39 /*!
40 \class SoVRMLBox SoVRMLBox.h Inventor/VRMLnodes/SoVRMLBox.h
41 \brief The SoVRMLBox class is used for representing a 3D box.
42
43 \ingroup VRMLnodes
44
45 \WEB3DCOPYRIGHT
46
47 \verbatim
48 Box {
49 field SFVec3f size 2 2 2 # (0, inf)
50 }
51 \endverbatim
52
53 The Box node specifies a rectangular parallelepiped box centred at (0, 0, 0)
54 in the local coordinate system and aligned with the local coordinate axes.
55 By default, the box measures 2 units in each dimension, from -1 to +1. The
56 size field specifies the extents of the box along the X-, Y-, and
57 Z-axes respectively and each component value shall be greater than zero.
58 Figure 6.2 illustrates the Box node.
59
60 <center>
61 <img src="http://www.web3d.org/documents/specifications/14772/V2.0/Images/box.gif">
62 Figure 6.2
63 </center>
64
65 Textures are applied individually to each face of the box. On the
66 front (+Z), back (-Z), right (+X), and left (-X) faces of the box,
67 when viewed from the outside with the +Y-axis up, the texture is
68 mapped onto each face with the same orientation as if the image were
69 displayed normally in 2D. On the top face of the box (+Y), when
70 viewed from above and looking down the Y-axis toward the origin with
71 the -Z-axis as the view up direction, the texture is mapped onto the
72 face with the same orientation as if the image were displayed
73 normally in 2D. On the bottom face of the box (-Y), when viewed from
74 below looking up the Y-axis toward the origin with the +Z-axis as
75 the view up direction, the texture is mapped onto the face with the
76 same orientation as if the image were displayed normally in
77 2D. SoVRMLTextureTransform affects the texture coordinates of the
78 Box. The Box node's geometry requires outside faces only. When
79 viewed from the inside the results are undefined.
80
81 */
82
83 /*!
84 \var SoVRMLBox::size
85
86 Box size vector. Default value is (2,2,2).
87 */
88
89 #include <Inventor/VRMLnodes/SoVRMLBox.h>
90 #include "coindefs.h"
91
92 #include <Inventor/VRMLnodes/SoVRMLMacros.h>
93 #include <Inventor/elements/SoGLMultiTextureEnabledElement.h>
94 #include <Inventor/elements/SoMultiTextureCoordinateElement.h>
95 #include <Inventor/actions/SoGLRenderAction.h>
96 #include <Inventor/actions/SoGetPrimitiveCountAction.h>
97 #include <Inventor/actions/SoRayPickAction.h>
98 #include <Inventor/bundles/SoMaterialBundle.h>
99 #include <Inventor/misc/SoState.h>
100
101 #include "nodes/SoSubNodeP.h"
102 #include "rendering/SoGL.h"
103 #include "misc/SoGenerate.h"
104 #include "misc/SoPick.h"
105
106 SO_NODE_SOURCE(SoVRMLBox);
107
108 // Doc in parent
109 void
initClass(void)110 SoVRMLBox::initClass(void) // static
111 {
112 SO_NODE_INTERNAL_INIT_CLASS(SoVRMLBox, SO_VRML97_NODE_TYPE);
113 }
114
115 /*!
116 Constructor.
117 */
SoVRMLBox(void)118 SoVRMLBox::SoVRMLBox(void)
119 {
120 SO_VRMLNODE_INTERNAL_CONSTRUCTOR(SoVRMLBox);
121
122 SO_VRMLNODE_ADD_FIELD(size, (2.0f, 2.0f, 2.0f));
123 }
124
125 /*!
126 Destructor.
127 */
~SoVRMLBox()128 SoVRMLBox::~SoVRMLBox()
129 {
130 }
131
132 // Doc in parent
133 void
GLRender(SoGLRenderAction * action)134 SoVRMLBox::GLRender(SoGLRenderAction * action)
135 {
136 if (!this->shouldGLRender(action)) return;
137 SoState * state = action->getState();
138
139 SbBool doTextures = SoGLMultiTextureEnabledElement::get(state);
140
141 SoMaterialBundle mb(action);
142 mb.sendFirst();
143
144 SbBool sendNormals = !mb.isColorOnly() ||
145 (SoMultiTextureCoordinateElement::getType(state) == SoMultiTextureCoordinateElement::FUNCTION);
146
147 unsigned int flags = 0;
148 if (doTextures) flags |= SOGL_NEED_TEXCOORDS;
149 if (sendNormals) flags |= SOGL_NEED_NORMALS;
150
151 SbVec3f s = this->size.getValue();
152
153 sogl_render_cube(s[0],
154 s[1],
155 s[2],
156 &mb,
157 flags, state);
158 }
159
160 // Doc in parent
161 void
rayPick(SoRayPickAction * action)162 SoVRMLBox::rayPick(SoRayPickAction * action)
163 {
164 if (!shouldRayPick(action)) return;
165
166 SbVec3f s = this->size.getValue();
167 sopick_pick_cube(s[0],
168 s[1],
169 s[2],
170 0,
171 this, action);
172 }
173
174 // Doc in parent
175 void
getPrimitiveCount(SoGetPrimitiveCountAction * action)176 SoVRMLBox::getPrimitiveCount(SoGetPrimitiveCountAction * action)
177 {
178 if (!this->shouldPrimitiveCount(action)) return;
179 action->addNumTriangles(12);
180 }
181
182 // Doc in parent
183 void
generatePrimitives(SoAction * action)184 SoVRMLBox::generatePrimitives(SoAction * action)
185 {
186 SbVec3f s = this->size.getValue();
187 sogen_generate_cube(s[0],
188 s[1],
189 s[2],
190 0,
191 this,
192 action);
193 }
194
195 // Doc in parent
196 void
computeBBox(SoAction * action,SbBox3f & COIN_UNUSED_ARG (box),SbVec3f & center)197 SoVRMLBox::computeBBox(SoAction * action,
198 SbBox3f & COIN_UNUSED_ARG(box),
199 SbVec3f & center)
200 {
201 center.setValue(0.0f, 0.0f, 0.0f);
202 SbVec3f s = this->size.getValue();
203 float w = s[0] * 0.5f;
204 float h = s[1] * 0.5f;
205 float d = s[2] * 0.5f;
206
207 // Allow negative values.
208 if (w < 0.0f) w = -w;
209 if (h < 0.0f) h = -h;
210 if (d < 0.0f) d = -d;
211
212 box.setBounds(-w, -h, -d, w, h, d);
213 }
214
215 #endif // HAVE_VRML97
216
