openscenegraph
CubicBezier
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1/* -*-c++-*-
2 * Copyright (C) 2008 Cedric Pinson <cedric.pinson@plopbyte.net>
3 *
4 * This library is open source and may be redistributed and/or modified under
5 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
6 * (at your option) any later version. The full license is in LICENSE file
7 * included with this distribution, and on the openscenegraph.org website.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * OpenSceneGraph Public License for more details.
13*/
14
15#ifndef OSGANIMATION_CUBIC_BEZIER
16#define OSGANIMATION_CUBIC_BEZIER 1
17
18#include <osg/Vec2>
19#include <osg/Vec3>
20#include <osg/Vec4>
21
22namespace osgAnimation
23{
24
25 template <class T>
26 class TemplateCubicBezier
27 {
28 public:
29 TemplateCubicBezier() : _position(osg::default_value<T>()), _controlPointIn(osg::default_value<T>()), _controlPointOut(osg::default_value<T>()) {}
30
31 TemplateCubicBezier(const T& p, const T& i, const T& o) : _position(p), _controlPointIn(i), _controlPointOut(o)
32 {
33 }
34
35 // Constructor with value only
36 TemplateCubicBezier(const T& p) : _position(p), _controlPointIn(p), _controlPointOut(p)
37 {
38 }
39
40 const T& getPosition() const { return _position;}
41 const T& getControlPointIn() const { return _controlPointIn;}
42 const T& getControlPointOut() const { return _controlPointOut;}
43
44 T& getPosition() { return _position;}
45 T& getControlPointIn() { return _controlPointIn;}
46 T& getControlPointOut() { return _controlPointOut;}
47
48 void setPosition(const T& v) {_position = v;}
49 void setControlPointIn(const T& v) {_controlPointIn = v;}
50 void setControlPointOut(const T& v) {_controlPointOut = v;}
51
52 bool operator==(const TemplateCubicBezier<T>& other) const
53 { return _position == other._position && _controlPointIn == other._controlPointIn && _controlPointOut == other._controlPointOut; }
54
55 // steaming operators.
56 friend std::ostream& operator << (std::ostream& output, const TemplateCubicBezier<T>& tcb)
57 {
58 output << tcb._position << " "
59 << tcb._controlPointIn << " "
60 << tcb._controlPointOut;
61 return output; // to enable cascading
62 }
63
64 friend std::istream& operator >> (std::istream& input, TemplateCubicBezier<T>& tcb)
65 {
66 input >> tcb._position >> tcb._controlPointIn >> tcb._controlPointOut;
67 return input;
68 }
69
70 protected:
71 T _position, _controlPointIn, _controlPointOut;
72 };
73
74 typedef TemplateCubicBezier<float> FloatCubicBezier;
75 typedef TemplateCubicBezier<double> DoubleCubicBezier;
76 typedef TemplateCubicBezier<osg::Vec2> Vec2CubicBezier;
77 typedef TemplateCubicBezier<osg::Vec3> Vec3CubicBezier;
78 typedef TemplateCubicBezier<osg::Vec4> Vec4CubicBezier;
79
80}
81
82#endif