hey guys!
what does it mean this B - A
B and A are both vectors[0…2]
ohhh in delphi…
is like
B[0] - A[0]
B[1] - A[1]
B[2] - A[2], or is another operation, like crossproduct ?
It means subtract vector A from vector B.
I think in your case the aim is to give the vector from A to B.
-Mezz
In standard math notions,
A * B is the dot product(the asterisk should be a dot in the middle)
A x B is the cross product.
Could you put the equations of the dot and cross products ???
dot: you’ll probably use this one
A * B = A[0]*B[0] + A[1]*B[1] + A[2]*B[2]
to find:
A * B = |A|*|B|*cos(angleBetweenThem)
cross:
C[0] = A[1]*B[2] - A[2]*B[1]
C[1] = A[2]*B[0] - A[0]*B[2]
C[2] = A[0]*B[1] - A[1]*B[0]
A x B = C
This gives the vector normal to A & B. Its length is equal to the area of the polygon defined by them…