Print done when done.

1 files changed, 96 insertions, 0 deletions

diff --git a/indra/llmath/xform.cpp b/indra/llmath/xform.cpp
new file mode 100644
index 0000000000..715b993b2b
--- /dev/null
+++ b/indra/llmath/xform.cpp
@@ -0,0 +1,96 @@
+/** 
+ * @file xform.cpp
+ *
+ * Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#include "linden_common.h"
+
+#include "xform.h"
+
+LLXform::LLXform()
+{
+	init();
+}
+
+LLXform::~LLXform()
+{
+}
+
+
+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;
+}