Thanks Alex. This is just what I needed.
S
Steve Bonham wrote:
All I really need is help with getting Rev to draw a trapezoid at 4
particular screen coordinates. The trouble is HOW to determine the
screen coordinates?
Here you go - create a stack, with a polygon (graphic with style
polygon) called "fairway" (don't worry about what the points of the
polygon are - they'll be overwritten anyway).
Then add this as the card handler
on mouseUp
-- origin (the tee) is at 300,300
-- initial points of the polygon are relative 0,0
local thePoints
put "300,300 344,332 495,349 538,316 549,300 538,283 495,251
344,267 300,300" into thePoints
put item 1 of mouseloc() into x
put item 2 of mouseloc() into y
-- check for click at the origin
if x = 300 and y = 300 then
answer "Ha Ha very funny"
exit mouseUp
end if
put atan( (y-300) / (x-300) ) into slope
if x < 300 then
put slope-pi into slope
end if
put empty into newPoints
repeat for each word P in thePoints
put item 1 of P - 300 into x
put item 2 of P - 300 into y
put round(300+x*cos(slope) - y*sin(slope)),
round(300+x*sin(slope) + y*cos(slope)) & cr after newpoints
end repeat
set the points of graphic fairway to newpoints
end mouseUp
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Alex Tweedly http://www.tweedly.net
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--------------------------------------------------------------------------------------------------
Steve Bonham
Director, Faculty Technology Development Laboratory
Center for Excellence in Teaching - Georgia Southern University
Statesboro, GA 30460-8143
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