On Sun, 3 Aug 2008, Edward Heil wrote:
This makes a pretty pinwheel:
Shoes.app :width => 500, :height => 500 do
animate 10 do
rotate 7
line( 100, 100, 200, 200 )
end
end
At first glance I don't understand why. The first time through the "animate"
loop, the line is rotated 7 degrees from where it would have been drawn. The
second time, it is rotated 14 degrees, and so on.
Where does that stored rotation live? Is there a "rotation value" in the
[...]
Trying this I found that that rotation value seems to be specific to the
slot:
Without checking NKS: I think the model is that the co-ordinate system
is rotated by the rotate command. PostScript is similar. This would
explain why rotating the coordinate system several times adds up the rotations.
Hugh
