Re: Mathematica Graphics - speed bottleneck

*To*: mathgroup at smc.vnet.net*Subject*: [mg97771] Re: Mathematica Graphics - speed bottleneck*From*: Jens <noeckel at gmail.com>*Date*: Sat, 21 Mar 2009 05:17:10 -0500 (EST)*References*: <13486459.1237450560451.JavaMail.root@m02> <gpvh6t$gpk$1@smc.vnet.net>

On Mar 20, 12:39 am, "David Park" <djmp... at comcast.net> wrote: > It would be very nice if the Help page for Graphics3D gave a more complete > listing, and a few examples, of the various Methods that can be used. The > current statement is limited to: > > " Settings that can be given through the Method option include > "SpherePoints" and "CylinderPoints"." with no indication of what these might > mean - although one might guess. > > And in general, the String options need better documentation at the point > where they are used. Or the Method page could have sections for each of the > major commands giving the allowed options, just like the ColorFunction page > gives argument usage for each of the plot types. > I can imagine that the Method option is difficult to document because its scope seems to depend on the context. To clarify what I mean, here is an example with different values for "CylinderPoints" applied to two graphics objects, where the most recent value actually _overrides_ the previously specified value: g = Graphics3D[Rotate[Cone[], Pi/2, {0, 1, 0}], Method -> {"ConePoints" -> 5}]; Graphics3D[{Cone[], {Arrowheads[{{.04, 1, g}}], Arrow[{{0, 0, 0}, {1, 1, 0}}]}}, Method -> {"ConePoints" -> 15}] The output shows two cones, one big and one small as part of an arrow. Both cones have 15 points, instead of 5 points for the arrow head, as intended. I think this is not the way Method should work here. But _if_ Method is supposed to be "global" in the above sense, then it obviously shouldn't be the mechanism by which one specifies "private" properties of an _object_, such as the vertex count of the graphics object g. Jens