/*

-----------------------------------------------------------------------------

This source file is part of OGRE

    (Object-oriented Graphics Rendering Engine)

For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2014 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy

of this software and associated documentation files (the "Software"), to deal

in the Software without restriction, including without limitation the rights

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the Software is

furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in

all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

THE SOFTWARE.

-----------------------------------------------------------------------------

*/

#include "OgreStableHeaders.h"

#include "OgreKeyFrame.h"

#include "OgreAnimationTrack.h"

namespace Ogre

{

    //---------------------------------------------------------------------

    KeyFrame::KeyFrame(const AnimationTrack* parent, Real time) 

        : mTime(time), mParentTrack(parent)

    {

    }

    //---------------------------------------------------------------------

    KeyFrame* KeyFrame::_clone(AnimationTrack* newParent) const

    {

        return OGRE_NEW KeyFrame(newParent, mTime);

    }

    //---------------------------------------------------------------------

    NumericKeyFrame::NumericKeyFrame(const AnimationTrack* parent, Real time)

        :KeyFrame(parent, time)

    {

    }

    //---------------------------------------------------------------------

    KeyFrame* NumericKeyFrame::_clone(AnimationTrack* newParent) const

    {

        NumericKeyFrame* newKf = OGRE_NEW NumericKeyFrame(newParent, mTime);

        newKf->mValue = mValue;

        return newKf;

    }

    //---------------------------------------------------------------------

    TransformKeyFrame::TransformKeyFrame(const AnimationTrack* parent, Real time)

        :KeyFrame(parent, time), mTranslate(Vector3::ZERO), 

        mScale(Vector3::UNIT_SCALE), mRotate(Quaternion::IDENTITY) 

    {

    }

    //---------------------------------------------------------------------

    void TransformKeyFrame::setTranslate(const Vector3& trans)

    {

        mTranslate = trans;

        if (mParentTrack)

            mParentTrack->_keyFrameDataChanged();

    }

    //---------------------------------------------------------------------

    const Vector3& TransformKeyFrame::getTranslate(void) const

    {

        return mTranslate;

    }

    //---------------------------------------------------------------------

    void TransformKeyFrame::setScale(const Vector3& scale)

    {

        mScale = scale;

        if (mParentTrack)

            mParentTrack->_keyFrameDataChanged();

    }

    //---------------------------------------------------------------------

    const Vector3& TransformKeyFrame::getScale(void) const

    {

        return mScale;

    }

    //---------------------------------------------------------------------

    void TransformKeyFrame::setRotation(const Quaternion& rot)

    {

        mRotate = rot;

        if (mParentTrack)

            mParentTrack->_keyFrameDataChanged();

    }

    //---------------------------------------------------------------------

    const Quaternion& TransformKeyFrame::getRotation(void) const

    {

        return mRotate;

    }

    //---------------------------------------------------------------------

    KeyFrame* TransformKeyFrame::_clone(AnimationTrack* newParent) const

    {

        TransformKeyFrame* newKf = OGRE_NEW TransformKeyFrame(newParent, mTime);

        newKf->mTranslate = mTranslate;

        newKf->mScale = mScale;

        newKf->mRotate = mRotate;

        return newKf;

    }

    //---------------------------------------------------------------------

    VertexMorphKeyFrame::VertexMorphKeyFrame(const AnimationTrack* parent, Real time)

        : KeyFrame(parent, time)

    {

    }

    //---------------------------------------------------------------------

    void VertexMorphKeyFrame::setVertexBuffer(const HardwareVertexBufferSharedPtr& buf)

    {

        mBuffer = buf;

    }

    //---------------------------------------------------------------------

    const HardwareVertexBufferSharedPtr& 

    VertexMorphKeyFrame::getVertexBuffer(void) const

    {

        return mBuffer;

    }

    //---------------------------------------------------------------------

    KeyFrame* VertexMorphKeyFrame::_clone(AnimationTrack* newParent) const

    {

        VertexMorphKeyFrame* newKf = OGRE_NEW VertexMorphKeyFrame(newParent, mTime);

        newKf->mBuffer = mBuffer;

        return newKf;

    }   

    //---------------------------------------------------------------------

    VertexPoseKeyFrame::VertexPoseKeyFrame(const AnimationTrack* parent, Real time)

        :KeyFrame(parent, time)

    {

    }

    //---------------------------------------------------------------------

    void VertexPoseKeyFrame::addPoseReference(ushort poseIndex, float influence)

    {

        mPoseRefs.push_back(PoseRef(poseIndex, influence));

    }

    //---------------------------------------------------------------------

    void VertexPoseKeyFrame::updatePoseReference(ushort poseIndex, float influence)

    {

        for (auto & poseRef : mPoseRefs)

        {

            if (poseRef.poseIndex == poseIndex)

            {

                poseRef.influence = influence;

                return;

            }

        }

        // if we got here, we didn't find it

        addPoseReference(poseIndex, influence);

    }

    //---------------------------------------------------------------------

    void VertexPoseKeyFrame::removePoseReference(ushort poseIndex)

    {

        for (PoseRefList::iterator i = mPoseRefs.begin(); i != mPoseRefs.end(); ++i)

        {

            if (i->poseIndex == poseIndex)

            {

                mPoseRefs.erase(i);

                return;

            }

        }

    }

    //---------------------------------------------------------------------

    void VertexPoseKeyFrame::removeAllPoseReferences(void)

    {

        mPoseRefs.clear();

    }

    //---------------------------------------------------------------------

    const VertexPoseKeyFrame::PoseRefList& 

    VertexPoseKeyFrame::getPoseReferences(void) const

    {

        return mPoseRefs;

    }

    //---------------------------------------------------------------------

    VertexPoseKeyFrame::PoseRefIterator 

    VertexPoseKeyFrame::getPoseReferenceIterator(void)

    {

        return PoseRefIterator(mPoseRefs.begin(), mPoseRefs.end());

    }

    //---------------------------------------------------------------------

    VertexPoseKeyFrame::ConstPoseRefIterator 

    VertexPoseKeyFrame::getPoseReferenceIterator(void) const

    {

        return ConstPoseRefIterator(mPoseRefs.begin(), mPoseRefs.end());

    }

    //---------------------------------------------------------------------

    KeyFrame* VertexPoseKeyFrame::_clone(AnimationTrack* newParent) const

    {

        VertexPoseKeyFrame* newKf = OGRE_NEW VertexPoseKeyFrame(newParent, mTime);

        // By-value copy ok

        newKf->mPoseRefs = mPoseRefs;

        return newKf;

    }   

    //---------------------------------------------------------------------

    void VertexPoseKeyFrame::_applyBaseKeyFrame(const VertexPoseKeyFrame* base)

    {

        // We subtract the matching pose influences in the base keyframe from the

        // influences in this keyframe

        for (auto & myPoseRef : mPoseRefs)

        {

            PoseRefList::const_iterator basePoseIt = base->getPoseReferences().begin();

            Real baseInfluence = 0.0f;

            for (;basePoseIt != base->getPoseReferences().end(); ++basePoseIt)

            {

                const PoseRef& basePoseRef = *basePoseIt;

                if (basePoseRef.poseIndex == myPoseRef.poseIndex)

                {

                    baseInfluence = basePoseRef.influence;

                    break;

                }

            }

            myPoseRef.influence -= baseInfluence;

        }

    }

}