calculating distance

Acki · Post by **Acki** » Fri Feb 06, 2004 12:52 am

Hi,
my problem is, that I have two 3d-vectors and whant to calculate the distance between them!

With an 2d-vector it's no problem
(Phytagoras: SQR((X2-X1)^2 + (Y2-Y1)^2) = distance

But what about two 3d-vectors ???

Maybe there is a function in Irrlich, that I can use ???

CU, Acki

keless · Post by **keless** » Fri Feb 06, 2004 1:02 am

irr::core::vector3df difference = vector1 - vector2;
return difference.getLength();

or even simply

return vector1.getDistanceFrom(vector2);

DarkWhoppy · Post by **DarkWhoppy** » Fri Feb 06, 2004 2:23 am

Oh man i've forgotten about some of the functions of vectors

. But thanks for the reminder keless

(seems my block of code is alittle longer than it should be)

SuryIIID_ · Post by **SuryIIID_** » Fri Feb 06, 2004 5:32 pm

With an 2d-vector it's no problem
(Phytagoras: SQR((X2-X1)^2 + (Y2-Y1)^2) = distance

Well you can just add the third element of a 2D vector and make it a 3D vector

SQR((X2-X1)^2 + (Y2-Y1)^2+ (Z2-Z1)^2) = distance ;

PS : No kidding it works

Acki · Post by **Acki** » Sat Feb 07, 2004 12:17 am

Thanks !!!

I'll try both methods...

CU