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May 29th, 2017, 08:31 AM   #1
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Question Understanding of the Perlin Noise

Hi there!
I'm trying to understand how does the Perlin Noise work and having a problem with it.
I have found this kind of tutorial Building Up Perlin Noise and can't understand the next paragraph
Quote:
So given this, we can just focus on the direction of G and always use unit length vectors. If we clamp the product of the falloff kernel and the gradient to 0 at all points beyond the 2×2 square, this gives us the surflet mentioned in that cryptic sentence.
I'm not sure whether the problem is in my poor English knowledge or in my poor math knowdledge, due to which I'm not able to understand that.

So could you rephrase that paragraph or explain it from another side, so I will understand it?
Chaz Ashley is offline  
 
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