Matrix Class - Android SDK -

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in matrix class of current android sdk, there 2 apis find hard understand.

what differences between: 1. postscale(float sx, float sy) , 2. postscale(float sx, float sy, float px, float py)

in particular, purposes of last 2 parameters ?

this should center of scaling. if have wolfram player installed, try link better understanding: understanding 2d scaling


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