On Oct 1, 2015, at 3:37 AM, Christian Meyer <[log in to unmask]> wrote: > Good addition. It would be nice if Double2D / Int2D are supported as > well, representing vectors. Oh, duh, of course I should have included that. Well, Double2D anyway for sure. Probably could have done Point2D.Double etc. too. > Those classes could just implement Oriented > and Scaled interfaces to make it work. This would be great for > visualizing flow fields. The problem here is that Oriented2D and Scaled2D are actually interfaces in the *portrayal* package, and Double2D and Int2D are in sim.util (intended to be separable from the rest of MASON). I'll just special-case them in VectorPortrayal2D. > Drawing them directly without calculating angle and length first is way > faster though, but this does not work together with OrientedPortrayal2D > which needs the orientation. I guess I need to stick to my custom > portrayal for the flow fields. Well, there's always atan. :-) But yes, speed will be an issue. I could special-case a vector shape that's all horizontal and vertical lines to bypass all the affine transformations, but you'd need to give me an idea of what shape I should use. What are you using? Sean