Bresenham? <http://en.wikipedia.org/wiki/Bresenham%27s_line_algorithm>
2010/8/17 Mark Reed <markree...@gmail.com> > >> I want to calculate a straight path of points between two points and > >> each frame do: > >> > >> sprite.x, sprite.y = sprite.path[step] > >> step++ > >> > > If you want to be really really really specific with your sprite's > movement, > > there are some spline classes you can use to make your sprite be > > interpolated through multiple points, with a smooth path between them. > > There's probably some easily accessible ones on pygame.org--I know that > > there's a Kochanek-Bartels spline class in the math section of my > graphics > > library. > > > > Ian > > > > I found some code Ian wrote a few years ago to draw the KB spline and > modified it to save the points which I've attached which kind of works > as a path editor except sometimes it backtracks some if I put a bunch > of control points in a line.. > > My problem is if I draw multiple lines then each of them is drawn in > 30 points (steps) right? Each line has to be the exact same length or > else using it as a path the sprite will speed up or slow down as it > gets to different length lines and obviously curves are more of a > problem. > > I guess I can space out the points and have the sprite go its own > speed from point to point, but then I have to handle not passing the > target point and dealing with hitting a curve of points which are > closer to each other than the sprites per frame movement distance... I > imagine having the path editor handle this would be better. > > Any path editors out there? > > Mark > -- Nota: Tildes omitidas para evitar incompatibilidades. :wq
