119 lines
2.5 KiB
C++
119 lines
2.5 KiB
C++
/**
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* @file xform.cpp
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*
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* $LicenseInfo:firstyear=2001&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include "xform.h"
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LLXform::LLXform()
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{
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init();
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}
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LLXform::~LLXform()
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{
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}
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// Link optimization - don't inline these LL_WARNS()
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void LLXform::warn(const char* const msg)
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{
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LL_WARNS() << msg << LL_ENDL;
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}
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LLXform* LLXform::getRoot() const
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{
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const LLXform* root = this;
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while(root->mParent)
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{
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root = root->mParent;
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}
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return (LLXform*)root;
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}
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BOOL LLXform::isRoot() const
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{
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return (!mParent);
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}
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BOOL LLXform::isRootEdit() const
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{
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return (!mParent);
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}
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LLXformMatrix::~LLXformMatrix()
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{
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}
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void LLXformMatrix::update()
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{
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if (mParent)
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{
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mWorldPosition = mPosition;
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if (mParent->getScaleChildOffset())
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{
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mWorldPosition.scaleVec(mParent->getScale());
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}
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mWorldPosition *= mParent->getWorldRotation();
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mWorldPosition += mParent->getWorldPosition();
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mWorldRotation = mRotation * mParent->getWorldRotation();
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}
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else
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{
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mWorldPosition = mPosition;
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mWorldRotation = mRotation;
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}
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}
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void LLXformMatrix::updateMatrix(BOOL update_bounds)
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{
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update();
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LLMatrix4 world_matrix;
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world_matrix.initAll(mScale, mWorldRotation, mWorldPosition);
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mWorldMatrix.loadu(world_matrix);
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if (update_bounds && (mChanged & MOVED))
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{
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mMax = mMin = mWorldMatrix.getRow<3>();
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LLVector4a total_sum,sum1,sum2;
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total_sum.setAbs(mWorldMatrix.getRow<0>());
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sum1.setAbs(mWorldMatrix.getRow<1>());
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sum2.setAbs(mWorldMatrix.getRow<2>());
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sum1.add(sum2);
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total_sum.add(sum1);
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total_sum.mul(.5f);
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mMax.add(total_sum);
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mMin.sub(total_sum);
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}
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}
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void LLXformMatrix::getMinMax(LLVector3& min, LLVector3& max) const
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{
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min.set(mMin.getF32ptr());
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max.set(mMax.getF32ptr());
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}
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