public bool getAxisAngle(AwVector axis, ref double theta)
{
bool result;
double inverseOfSinThetaByTwo, thetaExtended;
if (AwMath.equivalent(w, (double)1.0))
{
theta = 0.0;
if (axis.length() < AwMath.kDoubleEpsilon)
{
axis.set(0.0, 0.0, 1.0);
}
result = false;
}
else
{
thetaExtended = Math.Acos(AwMath.clamp(w, -1.0, 1.0));
theta = thetaExtended * 2.0;
inverseOfSinThetaByTwo = 1.0 / Math.Sin(thetaExtended);
axis.x = x * inverseOfSinThetaByTwo;
axis.y = y * inverseOfSinThetaByTwo;
axis.z = z * inverseOfSinThetaByTwo;
result = true;
}
return(result);
}
public bool getAxisAngle(AwVector axis, ref double theta)
{
bool result;
double inverseOfSinThetaByTwo, thetaExtended;
if (AwMath.equivalent(w, (double) 1.0))
{
theta = 0.0;
if (axis.length() < AwMath.kDoubleEpsilon)
{
axis.set(0.0,0.0,1.0);
}
result = false;
}
else
{
thetaExtended = Math.Acos(AwMath.clamp(w,-1.0,1.0));
theta = thetaExtended * 2.0;
inverseOfSinThetaByTwo = 1.0 / Math.Sin(thetaExtended);
axis.x = x * inverseOfSinThetaByTwo;
axis.y = y * inverseOfSinThetaByTwo;
axis.z = z * inverseOfSinThetaByTwo;
result = true;
}
return result;
}
