/**
* @file llrigginginfo.cpp
* @brief  Functions for tracking rigged box extents
*
* $LicenseInfo:firstyear=2018&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2018, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
* $/LicenseInfo$
*/

#include "llmath.h"
#include "llrigginginfo.h"

//-----------------------------------------------------------------------------
// LLJointRiggingInfo
//-----------------------------------------------------------------------------
LLJointRiggingInfo::LLJointRiggingInfo()
{
    mRiggedExtents[0].clear();
    mRiggedExtents[1].clear();
    mIsRiggedTo = false;
}

bool LLJointRiggingInfo::isRiggedTo() const
{
    return mIsRiggedTo;
}

void LLJointRiggingInfo::setIsRiggedTo(bool val)
{
    mIsRiggedTo = val;
}
    
LLVector4a *LLJointRiggingInfo::getRiggedExtents()
{
    return mRiggedExtents;
}

const LLVector4a *LLJointRiggingInfo::getRiggedExtents() const
{
    return mRiggedExtents;
}

// Combine two rigging info states.
// - isRiggedTo if either of the source infos are rigged to
// - box is union of the two sources
void LLJointRiggingInfo::merge(const LLJointRiggingInfo& other)
{
    if (other.mIsRiggedTo)
    {
        if (mIsRiggedTo)
        {
            // Combine existing boxes
            update_min_max(mRiggedExtents[0], mRiggedExtents[1], other.mRiggedExtents[0]);
            update_min_max(mRiggedExtents[0], mRiggedExtents[1], other.mRiggedExtents[1]);
        }
        else
        {
            // Initialize box
            mIsRiggedTo = true;
            mRiggedExtents[0] = other.mRiggedExtents[0];
            mRiggedExtents[1] = other.mRiggedExtents[1];
        }
    }
}

void mergeRigInfoTab(joint_rig_info_tab& dst, const joint_rig_info_tab& src)
{
    // Size should be either LL_CHARACTER_MAX_ANIMATED_JOINTS, or 0 if
    // no data. Not necessarily the same for both inputs.
    if (src.size() > dst.size())
    {
        dst.resize(src.size());
    }
    S32 size = llmin(src.size(), dst.size());
    for (S32 i=0; i<size; i++)
    {
        dst[i].merge(src[i]);
    }
}