Capture the Trig Function from an Option Menu Button

[Jim Hurley]

Roger, 

One caveat. This is a good exampe the caution one must exercise in using the Do.

Instead of: 

>>  replace "sine" with "sin" in tTrigFunction
>>  replace "cosine" with "cos" in tTrigFunction
>>  replace "tangent" with "tan" in tTrigFunction

Use:

>> replace "cosine" with "cos" in tTrigFunction

>>  replace "sine" with "sin" in tTrigFunction
>>  replace "tangent" with "tan" in tTrigFunction

If you replace "sine" with "sin" you also change "cosine" to "cosin" (There is a "sine" in "cosine") 
So reverse the order of these first two.

Jim



> ------------------------------
> 
> Message: 3
> Date: Mon, 10 Dec 2012 09:42:55 -0800
> From: Roger Guay <irog at mac.com>
> To: How to use LiveCode <use-livecode at lists.runrev.com>
> Subject: Re: Capture the Trig Function from an Option Menu Button
> Message-ID: <2F8EAA01-F970-48E0-AF7A-7733AF7E4FB3 at mac.com>
> Content-Type: text/plain; CHARSET=US-ASCII
> 
> This script is amazingly fast! And so are you, having apparently produced it in less than an hour!! My script appears to be slightly slower using a switch/case structure. I'll test it out when I get a moment.
> 
> Thanks very much,
> Roger
> 
> 
> On Dec 10, 2012, at 8:59 AM, Jim Hurley <jhurley0305 at sbcglobal.net> wrote:
> 
>> It turns out that Do is fast enough. Here is the Do script:
>> (The script might read a litle better by using "x" in the repeat loop instead of "i".)
>> 
>> on mouseUp
>>  put the label of btn "myOptionMenu" into tTrigFunction
>>  --It might be necessary  to take care in using the following replacements 
>>  replace "sine" with "sin" in tTrigFunction
>>  replace "cosine" with "cos" in tTrigFunction
>>  replace "tangent" with "tan" in tTrigFunction
>>  put round(the width of this card/2) into x0
>>  put  round(the height of this card/2) into y0
>>  put 50 into Amp--Amplitude of the trig curve
>>  set the points of grc "myCurve" to empty
>>  wait 0 millisec -- Force a screen refresh on the Mac
>>  repeat with i = 1 to 360--maybe with a step of 2 or 4
>>     put i*pi/180 into tAngle
>>      get   "put the " & tTrigFunction  & " of " & tAngle &  " into y " 
>>     do it
>>     put round(Amp*y) into y
>>     put i into x
>>     put x+ x0, y+y0 into tPoint
>>     put tPoint & cr after tPoints
>>     --Uncomment the following to see the curve evolve
>>     --set the points of grc "myCurve" to tPoints
>>     --wait 0 millisec
>>  end repeat
>>  set the points of grc "myCurve" to tPoints
>> end mouseUp
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>