Message: 8 Date: Mon, 04 Apr 2005 14:18:58 -0700 From: Quentin Long <[EMAIL PROTECTED]> Subject: Re: ANN Nine Ball with Spin (English) To: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=us-ascii; format=flowed
sez [EMAIL PROTECTED]But I am off to something else right now--using Run Rev to create a simulation contrasting global warming on Venus, Earth and Mars. (Right now I need a tool for making circular arcs--like the Run Rev pie shaped circular segments, but without the radial lines. May be a job for Turtle Graphics.)Graphics can be filled or not-filled, and you can also adjust the thickness/color/etc of the line. THus, why not try a *non-filled* arc? Hope this helps...
Quentin,
Are you referring to the Run Rev arc using the circle graphic with given arc length?
The problem I have with this is that I need an arc without radial lines. But fortunately it is easy to build one in Run Rev.
Put the following into a button script:
on mouseUp arc the loc of me,100,0,180+90,"myArc" end mouseUp
on arc startPt, r, tStartAngle,tEndAngle,tName
put item 1 of startPt into x0
put item 2 of startPt into y0
repeat with a = tStartAngle to tEndAngle
put x0 + r*cos(a/180*pi) into x
put y0 + r* sin(a/180*pi) into y
put round(x),round(y) & cr after results
end repeat
set the points of graphic tName to results
end arcAnd you will get a three-quarters circle, with radius 100, drawn around the button. (You will need a line graphic with the name "myArc." )
Following up on the "Poll the sum(7,9)" thread, I'm one of those who can't add, so I always let Run Rev do it for me, hence the 180 +90.
Jim
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