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SoCullElement.h
1 #ifndef COIN_SOCULLELEMENT_H
2 #define COIN_SOCULLELEMENT_H
3
4 /**************************************************************************\
5 *
6 * This file is part of the Coin 3D visualization library.
7 * Copyright (C) by Kongsberg Oil & Gas Technologies.
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * ("GPL") version 2 as published by the Free Software Foundation.
12 * See the file LICENSE.GPL at the root directory of this source
13 * distribution for additional information about the GNU GPL.
14 *
15 * For using Coin with software that can not be combined with the GNU
16 * GPL, and for taking advantage of the additional benefits of our
17 * support services, please contact Kongsberg Oil & Gas Technologies
18 * about acquiring a Coin Professional Edition License.
19 *
20 * See http://www.coin3d.org/ for more information.
21 *
22 * Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
23 * http://www.sim.no/ sales@sim.no coin-support@coin3d.org
24 *
25 \**************************************************************************/
26
27 #include <Inventor/elements/SoSubElement.h>
28 #include <Inventor/SbPlane.h>
29
30 class SbBox3f;
31 class SbViewVolume;
32
33 class COIN_DLL_API SoCullElement : public SoElement {
34 typedef SoElement inherited;
35
36 SO_ELEMENT_HEADER(SoCullElement);
37 public:
38 static void initClass(void);
39 protected:
40 virtual ~SoCullElement();
41
42 public:
43
44 virtual void init(SoState * state);
45 virtual void push(SoState * state);
46
47 static void setViewVolume(SoState * state, const SbViewVolume & vv);
48 static void addPlane(SoState * state, const SbPlane & newplane);
49 static SbBool cullBox(SoState * state, const SbBox3f & box, const SbBool transform = TRUE);
50 static SbBool cullTest(SoState * state, const SbBox3f & box, const SbBool transform = TRUE);
51 static SbBool completelyInside(SoState * state);
52
53 virtual SbBool matches(const SoElement * elt) const;
54 virtual SoElement * copyMatchInfo(void) const;
55
56 private:
57
58 enum { MAXPLANES = 32 };
59
60 static SbBool docull(SoState * state, const SbBox3f & box, const SbBool transform,
61 const SbBool updateelem);
62
63 SbPlane plane[MAXPLANES];
64 int numplanes;
65 unsigned int flags;
66 int vvindex;
67 };
68
69 #endif // !COIN_SOCULLELEMENT_H

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