FGFS-4.1/OpenSceneGraph
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Futher improvements and fixes to osg::AnimationPath, and the osglight

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demo to show it action.
This commit is contained in:
Robert Osfield
2002-08-13 15:31:10 +00:00
parent 7c049360ff
commit f9cc8783b3
10 changed files with 175 additions and 172 deletions
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78
include/osg/AnimationPath
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@@ -7,7 +7,6 @@
#include <osg/Matrix>
#include <osg/Quat>
#include <osg/Transform>
#include <map>
@@ -17,29 +16,27 @@ namespace osg {
* Subclassed from Transform::ComputeTransformCallback allows AnimationPath to
* be attached directly to Transform nodes to move subgraphs around the scene.
*/
class SG_EXPORT AnimationPath : public Transform::ComputeTransformCallback
class SG_EXPORT AnimationPath : public osg::Referenced
{
public:
AnimationPath() {}
AnimationPath():_loopMode(LOOP) {}
/** get the local transformation matrix for a point in time.*/
virtual bool getMatrix(double time,Matrix& matrix) const;
/** get the local inverse transformation matrix for a point in time.*/
virtual bool getInverse(double time,Matrix& matrix) const;
/** Get the transformation matrix which moves from local coords to world coords.*/
virtual const bool computeLocalToWorldMatrix(Matrix& matrix,const Transform* transform, NodeVisitor* nv) const;
/** Get the transformation matrix which moves from world coords to local coords.*/
virtual const bool computeWorldToLocalMatrix(Matrix& matrix,const Transform* transform, NodeVisitor* nv) const;
struct Key
struct ControlPoint
{
Key() {}
ControlPoint() {}
Key(const osg::Vec3& position, const osg::Quat& rotation, const osg::Vec3& scale):
ControlPoint(const osg::Vec3& position):
_position(position),
_rotation(),
_scale() {}
ControlPoint(const osg::Vec3& position, const osg::Quat& rotation):
_position(position),
_rotation(rotation),
_scale() {}
ControlPoint(const osg::Vec3& position, const osg::Quat& rotation, const osg::Vec3& scale):
_position(position),
_rotation(rotation),
_scale(scale) {}
@@ -48,7 +45,7 @@ class SG_EXPORT AnimationPath : public Transform::ComputeTransformCallback
osg::Quat _rotation;
osg::Vec3 _scale;
inline void interpolate(const float ratio,const Key& first, const Key& second)
inline void interpolate(const float ratio,const ControlPoint& first, const ControlPoint& second)
{
float one_minus_ratio = 1.0f-ratio;
_position = first._position*one_minus_ratio + second._position*ratio;
@@ -71,16 +68,53 @@ class SG_EXPORT AnimationPath : public Transform::ComputeTransformCallback
}
};
/** get the transformation matrix for a point in time.*/
bool getMatrix(double time,Matrix& matrix) const
{
ControlPoint cp;
if (!getInterpolatedControlPoint(time,cp)) return false;
cp.getMatrix(matrix);
return true;
}
/** get the inverse transformation matrix for a point in time.*/
bool getInverse(double time,Matrix& matrix) const
{
ControlPoint cp;
if (!getInterpolatedControlPoint(time,cp)) return false;
cp.getInverse(matrix);
return true;
}
void insert(double time,const Key& key);
/** get the local ControlPoint frame for a point in time.*/
virtual bool getInterpolatedControlPoint(double time,ControlPoint& ControlPoint) const;
void insert(double time,const ControlPoint& ControlPoint);
double getFirstTime() const { if (!_timeControlPointMap.empty()) return _timeControlPointMap.begin()->first; else return 0.0;}
double getLastTime() const { if (!_timeControlPointMap.empty()) return _timeControlPointMap.rbegin()->first; else return 0.0;}
double getPeriod() const { return getLastTime()-getFirstTime();}
enum LoopMode
{
SWING,
LOOP,
NO_LOOPING
};
void setLoopMode(LoopMode lm) { _loopMode = lm; }
LoopMode getLoopMode() const { return _loopMode; }
protected:
virtual ~AnimationPath() {}
typedef std::map<double,Key> TimeKeyMap;
typedef std::map<double,ControlPoint> TimeControlPointMap;
TimeKeyMap _timeKeyMap;
TimeControlPointMap _timeControlPointMap;
LoopMode _loopMode;
};