MetaFun - Pragma ADE

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Using ( ) is not mandatory but makes the expression look less complicated.
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"z0..z1..cycle"
"(z0..z1..cycle) cutafter directionpoint (1,1) of (z0..z1..cycle)"
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We will apply these commands in the next chapters, but first we will finish our introduction in
METAPOST. We have seen how a path is constructed and what can be done with it. Now it is time
to demonstrate how such a path is turned into a graphic.
1.4 Angles
You can go from angles to vectors and vice versa using the angle and dir functions. The next
example show both in action.
pickup pencircle scaled 2mm ;
draw (origin -- dir(45) -- dir(0) -- cycle)
scaled 3cm withcolor .625red ;
draw (origin -- dir(angle(1,1)) -- dir(angle(1,0)) -- cycle)
scaled 3cm shifted (3.5cm,0) withcolor .625yellow ;
draw (origin -- (1,1) -- (1,0) -- cycle)
scaled 3cm shifted (7cm,0) withcolor .625white ;
Angles Welcome to MetaPost
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