Lines Matching refs:theta
2152 # {x y z w} where w = cos(theta/2) and {x y z} = sin(theta/2)*unitNormal
2153 # quaternions are always fixed so that cos(theta/2) > 0 -- that is, so that
2154 # the reported theta (q %-2) is in the range [0, 180]
2155 # This is important. One can also get a directed theta based on a
2158 # sign of theta if that value is negative.
2166 # new feature: q = axisAngle({x y z}, theta)
2167 # new feature: q = axisAngle(x, y, z, theta)
2168 # new feature: q = axisAngle("{x y x theta}")
2173 # new feature: rotate axisAngle {x y z theta}
2221 # rotation and w = theta for the rotation, where the normal and theta are chosen
2263 # (q%-2) -- theta