/indra/llmath/xform.cpp
https://bitbucket.org/lindenlab/viewer-beta/ · C++ · 119 lines · 77 code · 17 blank · 25 comment · 5 complexity · 5fbd19e7c2224129287eeb145769514c MD5 · raw file
- /**
- * @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 llwarns
- 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;
- }