@sweetsh
only in translation u add
M=Matrix
I= iamge coordinate
O=object coordinate
for translation only
I=M+O
for all other
enlargement,rotation reflection..
it is
I=M.O
note the M is the 2x2 matrix and O coordinater(lets take 3 coordinate(a trinalge coordiante) for example
so then it will be (rotation 90 clockiwise that is)
I=(0 1) X (1 2 3)
(-1 0) (4 5 6)
and yeah no need to learn all the thing just draw this and remember
I
I(0,1)
(-1,0)------------(1,0)
I(0,-1)
I
if it is 90 clockiwise then 0,1 will be 1,0
and 1,0 will be 0,-1
NOTE:- I is not image coordinate..
I is the the straight line of y axis
and ---- is the x axis line
+ rep if u find it helpful:D