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Added setCurrentFrame interface to AnimClip.

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This will recurse the tree and call setCurrentFrameInternal on each node.
This method can be overriden, currently the only meaningful implementation is AnimClip.
This commit is contained in:
Anthony J. Thibault 2015-08-25 09:58:36 -07:00
parent 7a2ca047cb
commit 4bdb00bbc5
3 changed files with 47 additions and 33 deletions
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69
libraries/animation/src/AnimClip.cpp
View file

@ -45,38 +45,6 @@ void AnimClip::setLoopFlag(bool loopFlag) {
_loopFlag = loopFlag;
}
float AnimClip::accumulateTime(float frame, float dt) const {
const float startFrame = std::min(_startFrame, _endFrame);
if (startFrame == _endFrame) {
// when startFrame >= endFrame
frame = _endFrame;
} else if (_timeScale > 0.0f) {
// accumulate time, keeping track of loops and end of animation events.
const float FRAMES_PER_SECOND = 30.0f;
float framesRemaining = (dt * _timeScale) * FRAMES_PER_SECOND;
while (framesRemaining > 0.0f) {
float framesTillEnd = _endFrame - _frame;
if (framesRemaining >= framesTillEnd) {
if (_loopFlag) {
// anim loop
// TODO: trigger onLoop event
framesRemaining -= framesTillEnd;
frame = startFrame;
} else {
// anim end
// TODO: trigger onDone event
frame = _endFrame;
framesRemaining = 0.0f;
}
} else {
frame += framesRemaining;
framesRemaining = 0.0f;
}
}
}
return frame;
}
const std::vector<AnimPose>& AnimClip::evaluate(float dt) {
_frame = accumulateTime(_frame, dt);
@ -109,6 +77,43 @@ const std::vector<AnimPose>& AnimClip::evaluate(float dt) {
return _poses;
}
void AnimClip::setCurrentFrameInternal(float frame) {
const float dt = 0.0f;
_frame = accumulateTime(frame, dt);
}
float AnimClip::accumulateTime(float frame, float dt) const {
const float startFrame = std::min(_startFrame, _endFrame);
if (startFrame == _endFrame) {
// when startFrame >= endFrame
frame = _endFrame;
} else if (_timeScale > 0.0f) {
// accumulate time, keeping track of loops and end of animation events.
const float FRAMES_PER_SECOND = 30.0f;
float framesRemaining = (dt * _timeScale) * FRAMES_PER_SECOND;
while (framesRemaining > 0.0f) {
float framesTillEnd = _endFrame - _frame;
if (framesRemaining >= framesTillEnd) {
if (_loopFlag) {
// anim loop
// TODO: trigger onLoop event
framesRemaining -= framesTillEnd;
frame = startFrame;
} else {
// anim end
// TODO: trigger onDone event
frame = _endFrame;
framesRemaining = 0.0f;
}
} else {
frame += framesRemaining;
framesRemaining = 0.0f;
}
}
}
return frame;
}
void AnimClip::copyFromNetworkAnim() {
assert(_networkAnim && _networkAnim->isLoaded() && _skeleton);
_anim.clear();

2
libraries/animation/src/AnimClip.h
View file

@ -45,6 +45,8 @@ public:
virtual const std::vector<AnimPose>& evaluate(float dt) override;
protected:
virtual void setCurrentFrameInternal(float frame) override;
float accumulateTime(float frame, float dt) const;
void copyFromNetworkAnim();

9
libraries/animation/src/AnimNode.h
View file

@ -43,6 +43,7 @@ public:
typedef std::shared_ptr<AnimNode> Pointer;
AnimNode(Type type, const std::string& id) : _type(type), _id(id) {}
virtual ~AnimNode() {}
const std::string& getID() const { return _id; }
Type getType() const { return _type; }
@ -70,7 +71,12 @@ public:
AnimSkeleton::ConstPointer getSkeleton() const { return _skeleton; }
virtual ~AnimNode() {}
void setCurrentFrame(float frame) {
setCurrentFrameInternal(frame);
for (auto&& child : _children) {
child->setCurrentFrameInternal(frame);
}
}
virtual const std::vector<AnimPose>& evaluate(float dt) = 0;
virtual const std::vector<AnimPose>& overlay(float dt, const std::vector<AnimPose>& underPoses) {
@ -79,6 +85,7 @@ public:
protected:
virtual void setCurrentFrameInternal(float frame) {}
virtual void setSkeletonInternal(AnimSkeleton::ConstPointer skeleton) {
_skeleton = skeleton;
}