1 | /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield |
---|
2 | * |
---|
3 | * This library is open source and may be redistributed and/or modified under |
---|
4 | * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or |
---|
5 | * (at your option) any later version. The full license is in LICENSE file |
---|
6 | * included with this distribution, and on the openscenegraph.org website. |
---|
7 | * |
---|
8 | * This library is distributed in the hope that it will be useful, |
---|
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
11 | * OpenSceneGraph Public License for more details. |
---|
12 | */ |
---|
13 | |
---|
14 | #ifndef OSG_ANIMATIONPATH |
---|
15 | #define OSG_ANIMATIONPATH 1 |
---|
16 | |
---|
17 | #include <map> |
---|
18 | #include <istream> |
---|
19 | #include <float.h> |
---|
20 | |
---|
21 | #include <osg/Matrixf> |
---|
22 | #include <osg/Matrixd> |
---|
23 | #include <osg/Quat> |
---|
24 | #include <osg/NodeCallback> |
---|
25 | |
---|
26 | namespace osg { |
---|
27 | |
---|
28 | /** AnimationPath encapsulates a time varying transformation pathway. Can be |
---|
29 | * used for updating camera position and model object position. |
---|
30 | * AnimationPathCallback can be attached directly to Transform nodes to |
---|
31 | * move subgraphs around the scene. |
---|
32 | */ |
---|
33 | class OSG_EXPORT AnimationPath : public virtual osg::Object |
---|
34 | { |
---|
35 | public: |
---|
36 | |
---|
37 | AnimationPath():_loopMode(LOOP) {} |
---|
38 | |
---|
39 | AnimationPath(const AnimationPath& ap, const CopyOp& copyop=CopyOp::SHALLOW_COPY): |
---|
40 | Object(ap,copyop), |
---|
41 | _timeControlPointMap(ap._timeControlPointMap), |
---|
42 | _loopMode(ap._loopMode) {} |
---|
43 | |
---|
44 | META_Object(osg,AnimationPath); |
---|
45 | |
---|
46 | class ControlPoint |
---|
47 | { |
---|
48 | public: |
---|
49 | ControlPoint(): |
---|
50 | _scale(1.0,1.0,1.0) {} |
---|
51 | |
---|
52 | ControlPoint(const osg::Vec3d& position): |
---|
53 | _position(position), |
---|
54 | _rotation(), |
---|
55 | _scale(1.0,1.0,1.0) {} |
---|
56 | |
---|
57 | ControlPoint(const osg::Vec3d& position, const osg::Quat& rotation): |
---|
58 | _position(position), |
---|
59 | _rotation(rotation), |
---|
60 | _scale(1.0,1.0,1.0) {} |
---|
61 | |
---|
62 | ControlPoint(const osg::Vec3d& position, const osg::Quat& rotation, const osg::Vec3d& scale): |
---|
63 | _position(position), |
---|
64 | _rotation(rotation), |
---|
65 | _scale(scale) {} |
---|
66 | |
---|
67 | void setPosition(const osg::Vec3d& position) { _position = position; } |
---|
68 | const osg::Vec3d& getPosition() const { return _position; } |
---|
69 | |
---|
70 | void setRotation(const osg::Quat& rotation) { _rotation = rotation; } |
---|
71 | const osg::Quat& getRotation() const { return _rotation; } |
---|
72 | |
---|
73 | void setScale(const osg::Vec3d& scale) { _scale = scale; } |
---|
74 | const osg::Vec3d& getScale() const { return _scale; } |
---|
75 | |
---|
76 | inline void interpolate(float ratio,const ControlPoint& first, const ControlPoint& second) |
---|
77 | { |
---|
78 | float one_minus_ratio = 1.0f-ratio; |
---|
79 | _position = first._position*one_minus_ratio + second._position*ratio; |
---|
80 | _rotation.slerp(ratio,first._rotation,second._rotation); |
---|
81 | _scale = first._scale*one_minus_ratio + second._scale*ratio; |
---|
82 | } |
---|
83 | |
---|
84 | inline void interpolate(double ratio,const ControlPoint& first, const ControlPoint& second) |
---|
85 | { |
---|
86 | double one_minus_ratio = 1.0f-ratio; |
---|
87 | _position = first._position*one_minus_ratio + second._position*ratio; |
---|
88 | _rotation.slerp(ratio,first._rotation,second._rotation); |
---|
89 | _scale = first._scale*one_minus_ratio + second._scale*ratio; |
---|
90 | } |
---|
91 | |
---|
92 | inline void getMatrix(Matrixf& matrix) const |
---|
93 | { |
---|
94 | matrix.makeRotate(_rotation); |
---|
95 | matrix.preMultScale(_scale); |
---|
96 | matrix.postMultTranslate(_position); |
---|
97 | } |
---|
98 | |
---|
99 | inline void getMatrix(Matrixd& matrix) const |
---|
100 | { |
---|
101 | matrix.makeRotate(_rotation); |
---|
102 | matrix.preMultScale(_scale); |
---|
103 | matrix.postMultTranslate(_position); |
---|
104 | } |
---|
105 | |
---|
106 | inline void getInverse(Matrixf& matrix) const |
---|
107 | { |
---|
108 | matrix.makeRotate(_rotation.inverse()); |
---|
109 | matrix.postMultScale(osg::Vec3d(1.0/_scale.x(),1.0/_scale.y(),1.0/_scale.z())); |
---|
110 | matrix.preMultTranslate(-_position); |
---|
111 | } |
---|
112 | |
---|
113 | inline void getInverse(Matrixd& matrix) const |
---|
114 | { |
---|
115 | matrix.makeRotate(_rotation.inverse()); |
---|
116 | matrix.postMultScale(osg::Vec3d(1.0/_scale.x(),1.0/_scale.y(),1.0/_scale.z())); |
---|
117 | matrix.preMultTranslate(-_position); |
---|
118 | } |
---|
119 | |
---|
120 | protected: |
---|
121 | |
---|
122 | osg::Vec3d _position; |
---|
123 | osg::Quat _rotation; |
---|
124 | osg::Vec3d _scale; |
---|
125 | |
---|
126 | }; |
---|
127 | |
---|
128 | |
---|
129 | /** Given a specific time, return the transformation matrix for a point. */ |
---|
130 | bool getMatrix(double time,Matrixf& matrix) const |
---|
131 | { |
---|
132 | ControlPoint cp; |
---|
133 | if (!getInterpolatedControlPoint(time,cp)) return false; |
---|
134 | cp.getMatrix(matrix); |
---|
135 | return true; |
---|
136 | } |
---|
137 | |
---|
138 | /** Given a specific time, return the transformation matrix for a point. */ |
---|
139 | bool getMatrix(double time,Matrixd& matrix) const |
---|
140 | { |
---|
141 | ControlPoint cp; |
---|
142 | if (!getInterpolatedControlPoint(time,cp)) return false; |
---|
143 | cp.getMatrix(matrix); |
---|
144 | return true; |
---|
145 | } |
---|
146 | |
---|
147 | /** Given a specific time, return the inverse transformation matrix for a point. */ |
---|
148 | bool getInverse(double time,Matrixf& matrix) const |
---|
149 | { |
---|
150 | ControlPoint cp; |
---|
151 | if (!getInterpolatedControlPoint(time,cp)) return false; |
---|
152 | cp.getInverse(matrix); |
---|
153 | return true; |
---|
154 | } |
---|
155 | |
---|
156 | bool getInverse(double time,Matrixd& matrix) const |
---|
157 | { |
---|
158 | ControlPoint cp; |
---|
159 | if (!getInterpolatedControlPoint(time,cp)) return false; |
---|
160 | cp.getInverse(matrix); |
---|
161 | return true; |
---|
162 | } |
---|
163 | |
---|
164 | /** Given a specific time, return the local ControlPoint frame for a point. */ |
---|
165 | virtual bool getInterpolatedControlPoint(double time,ControlPoint& controlPoint) const; |
---|
166 | |
---|
167 | /** Insert a control point into the AnimationPath.*/ |
---|
168 | void insert(double time,const ControlPoint& controlPoint); |
---|
169 | |
---|
170 | double getFirstTime() const { if (!_timeControlPointMap.empty()) return _timeControlPointMap.begin()->first; else return 0.0;} |
---|
171 | double getLastTime() const { if (!_timeControlPointMap.empty()) return _timeControlPointMap.rbegin()->first; else return 0.0;} |
---|
172 | double getPeriod() const { return getLastTime()-getFirstTime();} |
---|
173 | |
---|
174 | enum LoopMode |
---|
175 | { |
---|
176 | SWING, |
---|
177 | LOOP, |
---|
178 | NO_LOOPING |
---|
179 | }; |
---|
180 | |
---|
181 | void setLoopMode(LoopMode lm) { _loopMode = lm; } |
---|
182 | |
---|
183 | LoopMode getLoopMode() const { return _loopMode; } |
---|
184 | |
---|
185 | |
---|
186 | typedef std::map<double,ControlPoint> TimeControlPointMap; |
---|
187 | |
---|
188 | void setTimeControlPointMap(TimeControlPointMap& tcpm) { _timeControlPointMap=tcpm; } |
---|
189 | |
---|
190 | TimeControlPointMap& getTimeControlPointMap() { return _timeControlPointMap; } |
---|
191 | |
---|
192 | const TimeControlPointMap& getTimeControlPointMap() const { return _timeControlPointMap; } |
---|
193 | |
---|
194 | bool empty() const { return _timeControlPointMap.empty(); } |
---|
195 | |
---|
196 | void clear() { _timeControlPointMap.clear(); } |
---|
197 | |
---|
198 | /** Read the animation path from a flat ASCII file stream. */ |
---|
199 | void read(std::istream& in); |
---|
200 | |
---|
201 | /** Write the animation path to a flat ASCII file stream. */ |
---|
202 | void write(std::ostream& out) const; |
---|
203 | |
---|
204 | /** Write the control point to a flat ASCII file stream. */ |
---|
205 | void write(TimeControlPointMap::const_iterator itr, std::ostream& out) const; |
---|
206 | |
---|
207 | protected: |
---|
208 | |
---|
209 | virtual ~AnimationPath() {} |
---|
210 | |
---|
211 | TimeControlPointMap _timeControlPointMap; |
---|
212 | LoopMode _loopMode; |
---|
213 | |
---|
214 | }; |
---|
215 | |
---|
216 | |
---|
217 | class OSG_EXPORT AnimationPathCallback : public NodeCallback |
---|
218 | { |
---|
219 | public: |
---|
220 | |
---|
221 | AnimationPathCallback(): |
---|
222 | _pivotPoint(0.0,0.0,0.0), |
---|
223 | _useInverseMatrix(false), |
---|
224 | _timeOffset(0.0), |
---|
225 | _timeMultiplier(1.0), |
---|
226 | _firstTime(DBL_MAX), |
---|
227 | _latestTime(0.0), |
---|
228 | _pause(false), |
---|
229 | _pauseTime(0.0) {} |
---|
230 | |
---|
231 | AnimationPathCallback(const AnimationPathCallback& apc,const CopyOp& copyop): |
---|
232 | NodeCallback(apc,copyop), |
---|
233 | _animationPath(apc._animationPath), |
---|
234 | _pivotPoint(apc._pivotPoint), |
---|
235 | _useInverseMatrix(apc._useInverseMatrix), |
---|
236 | _timeOffset(apc._timeOffset), |
---|
237 | _timeMultiplier(apc._timeMultiplier), |
---|
238 | _firstTime(apc._firstTime), |
---|
239 | _latestTime(apc._latestTime), |
---|
240 | _pause(apc._pause), |
---|
241 | _pauseTime(apc._pauseTime) {} |
---|
242 | |
---|
243 | |
---|
244 | META_Object(osg,AnimationPathCallback); |
---|
245 | |
---|
246 | /** Construct an AnimationPathCallback with a specified animation path.*/ |
---|
247 | AnimationPathCallback(AnimationPath* ap,double timeOffset=0.0,double timeMultiplier=1.0): |
---|
248 | _animationPath(ap), |
---|
249 | _pivotPoint(0.0,0.0,0.0), |
---|
250 | _useInverseMatrix(false), |
---|
251 | _timeOffset(timeOffset), |
---|
252 | _timeMultiplier(timeMultiplier), |
---|
253 | _firstTime(DBL_MAX), |
---|
254 | _latestTime(0.0), |
---|
255 | _pause(false), |
---|
256 | _pauseTime(0.0) {} |
---|
257 | |
---|
258 | /** Construct an AnimationPathCallback and automatical create an animation path to produce a rotation about a point.*/ |
---|
259 | AnimationPathCallback(const osg::Vec3d& pivot,const osg::Vec3d& axis,float angularVelocity); |
---|
260 | |
---|
261 | |
---|
262 | void setAnimationPath(AnimationPath* path) { _animationPath = path; } |
---|
263 | AnimationPath* getAnimationPath() { return _animationPath.get(); } |
---|
264 | const AnimationPath* getAnimationPath() const { return _animationPath.get(); } |
---|
265 | |
---|
266 | inline void setPivotPoint(const Vec3d& pivot) { _pivotPoint = pivot; } |
---|
267 | inline const Vec3d& getPivotPoint() const { return _pivotPoint; } |
---|
268 | |
---|
269 | void setUseInverseMatrix(bool useInverseMatrix) { _useInverseMatrix = useInverseMatrix; } |
---|
270 | bool getUseInverseMatrix() const { return _useInverseMatrix; } |
---|
271 | |
---|
272 | void setTimeOffset(double offset) { _timeOffset = offset; } |
---|
273 | double getTimeOffset() const { return _timeOffset; } |
---|
274 | |
---|
275 | void setTimeMultiplier(double multiplier) { _timeMultiplier = multiplier; } |
---|
276 | double getTimeMultiplier() const { return _timeMultiplier; } |
---|
277 | |
---|
278 | |
---|
279 | void reset(); |
---|
280 | |
---|
281 | void setPause(bool pause); |
---|
282 | bool getPause() const { return _pause; } |
---|
283 | |
---|
284 | /** Get the animation time that is used to specify the position along |
---|
285 | * the AnimationPath. Animation time is computed from the formula: |
---|
286 | * ((_latestTime-_firstTime)-_timeOffset)*_timeMultiplier.*/ |
---|
287 | double getAnimationTime() const; |
---|
288 | |
---|
289 | /** Implements the callback. */ |
---|
290 | virtual void operator()(Node* node, NodeVisitor* nv); |
---|
291 | |
---|
292 | void update(osg::Node& node); |
---|
293 | |
---|
294 | public: |
---|
295 | |
---|
296 | ref_ptr<AnimationPath> _animationPath; |
---|
297 | osg::Vec3d _pivotPoint; |
---|
298 | bool _useInverseMatrix; |
---|
299 | double _timeOffset; |
---|
300 | double _timeMultiplier; |
---|
301 | double _firstTime; |
---|
302 | double _latestTime; |
---|
303 | bool _pause; |
---|
304 | double _pauseTime; |
---|
305 | |
---|
306 | protected: |
---|
307 | |
---|
308 | ~AnimationPathCallback(){} |
---|
309 | |
---|
310 | }; |
---|
311 | |
---|
312 | } |
---|
313 | |
---|
314 | #endif |
---|