97 lines
1.8 KiB
C++
97 lines
1.8 KiB
C++
/**
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* @file xform.cpp
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*
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* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
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* $License$
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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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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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mWorldMatrix.initAll(mScale, mWorldRotation, mWorldPosition);
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if (update_bounds && (mChanged & MOVED))
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{
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mMin.mV[0] = mMax.mV[0] = mWorldMatrix.mMatrix[3][0];
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mMin.mV[1] = mMax.mV[1] = mWorldMatrix.mMatrix[3][1];
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mMin.mV[2] = mMax.mV[2] = mWorldMatrix.mMatrix[3][2];
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F32 f0 = (fabs(mWorldMatrix.mMatrix[0][0])+fabs(mWorldMatrix.mMatrix[1][0])+fabs(mWorldMatrix.mMatrix[2][0])) * 0.5f;
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F32 f1 = (fabs(mWorldMatrix.mMatrix[0][1])+fabs(mWorldMatrix.mMatrix[1][1])+fabs(mWorldMatrix.mMatrix[2][1])) * 0.5f;
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F32 f2 = (fabs(mWorldMatrix.mMatrix[0][2])+fabs(mWorldMatrix.mMatrix[1][2])+fabs(mWorldMatrix.mMatrix[2][2])) * 0.5f;
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mMin.mV[0] -= f0;
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mMin.mV[1] -= f1;
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mMin.mV[2] -= f2;
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mMax.mV[0] += f0;
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mMax.mV[1] += f1;
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mMax.mV[2] += f2;
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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 = mMin;
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max = mMax;
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}
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