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Index › Programming Questions & Help › Syntax Questions › Mapping dist() to scale()
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Mapping dist() to scale() (Read 537 times)
alexarjuna
Mapping dist() to scale()
Jun 28th, 2009, 6:20am  
I have two points, whose distance apart I'm tracking with a dist() float. What I'd like to do is map that to another float linked to a scale() function elsewhere.

Essentially, I'd like the resulting scale() float, which starts at 1.0, to add 0.1 if the line is growing, and subtract 0.1 if the line is shrinking. Roughly like getting the difference between mouseX and pmouseX, except I'm not sure how to do this with a line whose length is constantly changing.

Any thoughts?
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blindfish
Re: Mapping dist() to scale()
Reply #1 - Jun 28th, 2009, 11:23am  
Unless I've misunderstood your aim I think you may be over-analysing the problem.  You have a starting state for the distance between two points - store this in a variable.  In draw() subtract the current distance from the starting state and adjust scale accordingly...
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Where is the what if the what is in why?
 
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