On 2020/04/24 21:19:57, dak wrote: > On 2020/04/24 21:18:12, dak wrote: > > > https://codereview.appspot.com/579630043/diff/555740043/lily/stencil-integral.cc > > File lily/stencil-integral.cc (right): > > > > > https://codereview.appspot.com/579630043/diff/555740043/lily/stencil-integral.cc#newcode465 > > lily/stencil-integral.cc:465: // more convoluted, but it's fairly hot path. > > Sorry for not being clear: the question was not why this change was effective > in > > saving time, but why it was valid. When thickness is zero, you only update > the > > upper skyline. Why would the lower skyline no longer need updating? > > Well, other way round, but apart from that the question stands.
When thickness is zero, the upper and lower curves are the same. Either one completes the skyline. https://codereview.appspot.com/579630043/
