1. Math question
Hello,
I need to know what the cordinates X,Y are giving that the are P
pixels away and D Degrees clockwise from N,I.
Thanks :).
--PatRat (Thomas Parslow)
-- ()___()
-- (o o)
-- =\O/=
-- Rat Software
-- http://www3.mistral.co.uk/billparsl/
2. Re: Math question
PatRat wrote:
> Hello,
> I need to know what the cordinates X,Y are giving that the are P
> pixels away and D Degrees clockwise from N,I.
> Thanks :).
-- first let's convert D to radians with the function
constant pi = 3.141592653589
function deg2rad(atom d)
return d / 180 * pi
end function
-- wewp wewp okay now i'm assuming that 0 degrees (or radians now)
means -- it's to the right, and pi / 2 would be up, pi would be left,
etc.
function where_coords(atom P, atom D)
D = deg2rad(D) -- unless you've already done this
y = -P * sin(D) -- negative becos in gfx, -y is up
-- whereas in trig, -y is down :\
x = p * cos(D)
end function
-- w00p it's been quite a while since i've taken math...i guess trig
sticks
-- to ya...i wonder if that's a good thing :\
--
Mike Burrell
http://mikpos.home.ml.org/
mikpos at softhome.net
