Hi List, Thanks, Hans, for your suggestion. In the end, I decided that I actually liked the silhouettes better than a faint version of the whole picture. Silhouettes clearly show the motion, but are far less visually distracting. In the figure below, the projectile motion’s are clear, including the cow’s constant angular velocity, but the final state still pops out. |
Gracht.pdf
Description: Adobe PDF document
I used “redecorated" to get the pictures with light, solid grays. Below is code for producing just the ball, if anyone wants to see the details. It includes a simple “shadow" macro that produces a shadow of any picture with an adjustable gray. I’m having lots of metafun! Gavin \startMPinclusions picture ball; ball := image( fill fullcircle scaled 1cm withshademethod "circular" withshadecenter (.25,.25) withshadecolors (.8white, black); draw fullcircle scaled 1cm withpen pencircle scaled 0.8pt ;); vardef shadow(expr p, t) = draw redecorated (draw p) withcolor t[background,0.8background]; enddef; \stopMPinclusions \startMPpage pair p; for i=0 upto 10: p := (i*cm/10, -((i-7.33)**2)*cm/7); shadow(ball shifted p, (i+1)/10) ; endfor draw ball shifted(1.1cm, -1.92cm) ; \stopMPpage |
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