120 lines
2.8 KiB
C++
120 lines
2.8 KiB
C++
/**
|
|
* @file xform.cpp
|
|
*
|
|
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
|
|
* Second Life Viewer Source Code
|
|
* Copyright (C) 2010, 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 "linden_common.h"
|
|
|
|
#include "xform.h"
|
|
|
|
LLXform::LLXform()
|
|
{
|
|
init();
|
|
}
|
|
|
|
LLXform::~LLXform()
|
|
{
|
|
}
|
|
|
|
// Link optimization - don't inline these LL_WARNS()
|
|
void LLXform::warn(const char* const msg)
|
|
{
|
|
llwarns << msg << llendl;
|
|
}
|
|
|
|
LLXform* LLXform::getRoot() const
|
|
{
|
|
const LLXform* root = this;
|
|
while(root->mParent)
|
|
{
|
|
root = root->mParent;
|
|
}
|
|
return (LLXform*)root;
|
|
}
|
|
|
|
BOOL LLXform::isRoot() const
|
|
{
|
|
return (!mParent);
|
|
}
|
|
|
|
BOOL LLXform::isRootEdit() const
|
|
{
|
|
return (!mParent);
|
|
}
|
|
|
|
LLXformMatrix::~LLXformMatrix()
|
|
{
|
|
}
|
|
|
|
void LLXformMatrix::update()
|
|
{
|
|
if (mParent)
|
|
{
|
|
mWorldPosition = mPosition;
|
|
if (mParent->getScaleChildOffset())
|
|
{
|
|
mWorldPosition.scaleVec(mParent->getScale());
|
|
}
|
|
mWorldPosition *= mParent->getWorldRotation();
|
|
mWorldPosition += mParent->getWorldPosition();
|
|
mWorldRotation = mRotation * mParent->getWorldRotation();
|
|
}
|
|
else
|
|
{
|
|
mWorldPosition = mPosition;
|
|
mWorldRotation = mRotation;
|
|
}
|
|
}
|
|
|
|
void LLXformMatrix::updateMatrix(BOOL update_bounds)
|
|
{
|
|
update();
|
|
|
|
mWorldMatrix.initAll(mScale, mWorldRotation, mWorldPosition);
|
|
|
|
if (update_bounds && (mChanged & MOVED))
|
|
{
|
|
mMin.mV[0] = mMax.mV[0] = mWorldMatrix.mMatrix[3][0];
|
|
mMin.mV[1] = mMax.mV[1] = mWorldMatrix.mMatrix[3][1];
|
|
mMin.mV[2] = mMax.mV[2] = mWorldMatrix.mMatrix[3][2];
|
|
|
|
F32 f0 = (fabs(mWorldMatrix.mMatrix[0][0])+fabs(mWorldMatrix.mMatrix[1][0])+fabs(mWorldMatrix.mMatrix[2][0])) * 0.5f;
|
|
F32 f1 = (fabs(mWorldMatrix.mMatrix[0][1])+fabs(mWorldMatrix.mMatrix[1][1])+fabs(mWorldMatrix.mMatrix[2][1])) * 0.5f;
|
|
F32 f2 = (fabs(mWorldMatrix.mMatrix[0][2])+fabs(mWorldMatrix.mMatrix[1][2])+fabs(mWorldMatrix.mMatrix[2][2])) * 0.5f;
|
|
|
|
mMin.mV[0] -= f0;
|
|
mMin.mV[1] -= f1;
|
|
mMin.mV[2] -= f2;
|
|
|
|
mMax.mV[0] += f0;
|
|
mMax.mV[1] += f1;
|
|
mMax.mV[2] += f2;
|
|
}
|
|
}
|
|
|
|
void LLXformMatrix::getMinMax(LLVector3& min, LLVector3& max) const
|
|
{
|
|
min = mMin;
|
|
max = mMax;
|
|
}
|