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SoElement.h
1 #ifndef COIN_SOELEMENT_H
2 #define COIN_SOELEMENT_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/SbBasic.h>
28 #include <Inventor/SoType.h>
29 #include <Inventor/misc/SoState.h>
30 #include <stdio.h>
31
32 class SoNode;
33
34 class COIN_DLL_API SoElement {
35 public:
36 static void initClass(void);
37
38 static SoType getClassTypeId(void);
39 static int getClassStackIndex(void);
40 const SoType getTypeId(void) const;
41 int getStackIndex(void) const;
42
43 virtual void init(SoState * state);
44
45 virtual void push(SoState * state);
46 virtual void pop(SoState * state, const SoElement * prevTopElement);
47
48 virtual SbBool matches(const SoElement * element) const = 0;
49 virtual SoElement * copyMatchInfo(void) const = 0;
50
51 static void initElements(void); // only for base class (SoElement)
52
53 static int getNumStackIndices(void);
54 static SoType getIdFromStackIndex(const int stackIndex);
55
56 void setDepth(const int depth);
57
58 int getDepth(void) const;
59
60 virtual void print(FILE * file = stdout) const;
61 virtual ~SoElement();
62
63 protected:
64 SoElement(void);
65 static int classStackIndex;
66
67 static SoElement * getElement(SoState * const state, const int stackIndex);
68 static const SoElement * getConstElement(SoState * const state, const int stackIndex);
69
70 void capture(SoState * const state) const;
71
72 virtual void captureThis(SoState * state) const;
73
74 void setTypeId(const SoType typeId);
75 void setStackIndex(const int index);
76
77 SoType typeId;
78 int stackIndex;
79
80 static int createStackIndex(const SoType id);
81 static SoTypeList * stackToType;
82
83 int depth;
84
85 SoElement * getNextInStack(void) const;
86 SoElement * getNextFree(void) const;
87
88 private:
89
90 static SoType classTypeId;
91
92 friend class SoState; // FIXME: bad design. 19990629 mortene.
93 static void cleanup(void);
94 SoElement * nextup;
95 SoElement * nextdown;
96 };
97
98 // inlined methods
99
100 inline SoElement *
101 SoElement::getElement(SoState * const state,
102 const int stackIndex)
103 {
104 return state->getElement(stackIndex);
105 }
106
107 inline void
108 SoElement::capture(SoState * const state) const
109 {
110 if (state->isCacheOpen()) this->captureThis(state);
111 }
112
113 inline const SoElement *
114 SoElement::getConstElement(SoState * const state,
115 const int stackIndex)
116 {
117 const SoElement * element = state->getConstElement(stackIndex);
118 element->capture(state);
119 return element;
120 }
121
122 #endif // !COIN_SOELEMENT_H
SoElement::getConstElement
static const SoElement * getConstElement(SoState *const state, const int stackIndex)
Definition: SoElement.h:114
SoElement::getElement
static SoElement * getElement(SoState *const state, const int stackIndex)
Definition: SoElement.h:101
SoNode
The SoNode class is the base class for nodes used in scene graphs.Coin is a retained mode 3D visualiz...
Definition: SoNode.h:47
SoElement
SoElement is the abstract base class for all elements.
Definition: SoElement.h:34
SoElement::typeId
SoType typeId
Definition: SoElement.h:77
SoState
The SoState class manages the Coin scenegraph traversal state data.The SoState class is used by actio...
Definition: SoState.h:35
SoTypeList
The SoTypeList class is a container class for arrays of SoType objects.
Definition: SoTypeList.h:30
SoElement::stackIndex
int stackIndex
Definition: SoElement.h:78
SoElement::captureThis
virtual void captureThis(SoState *state) const
Definition: SoElement.cpp:688
SoState::isCacheOpen
SbBool isCacheOpen(void) const
Definition: SoState.h:83
SoElement::capture
void capture(SoState *const state) const
Definition: SoElement.h:108
SoState::getElement
SoElement * getElement(const int stackindex)
Definition: SoState.cpp:218
SoElement::stackToType
static SoTypeList * stackToType
Definition: SoElement.h:81
SoState::getConstElement
const SoElement * getConstElement(const int stackindex) const
Definition: SoState.h:76
SoElement::depth
int depth
Definition: SoElement.h:83
SoElement::classStackIndex
static int classStackIndex
Definition: SoElement.h:65
SoType
The SoType class is the basis for the run-time type system in Coin.Many of the classes in the Coin li...
Definition: SoType.h:50

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