Scratch

Hi everybody!

I'm trying to paint a part of a circle with a dashed line, but it won't come up to me in an easy way. Mayby somebody can help.

The following things work fine so far:

1. I'm able to paint a circle automatically arround the point of origin with a radius of 139. The program starts drawing the circle at x=139; y=0. That's the code:


<set{ angle }to( 0
<set{ radius }to( 139
<set{ r }to( radius
<go to x   r )y   0
<repeat until> <( angle <=> 365 )>
<go to x   (( <cos( angle <*> r )) )y   (( <sin( angle <*> r ))
<change{ angle }by( 5

2. I'm able to start drawing a line at the position x=0; y=139  (angle = 90 degree) using <pen down> and stop drawing the line of the circle at an angle of 130 degree using <pen up>.

That's what's work. What I wanna do now is:

The part of the circle between 90 degree and 130 degree should be dashed!! It works with the following solution, which is very poor, I think (in the <repeat until> loop and under <change{ angle }by( 5 of the code above)

<if> <( angle <=> 95 )>
<pen down>
<if> <( angle <=> 100 )>
<pen up>

.
.
.

<if> <( angle <=> 130 )>
<pen up>

That's a lot of code and I'm sure there's a more efficient way, because drawing a dasched line between 90 degree and 180 degree would be the next step.

Can anybody help?