vectorA:cross

From ComputerCraft Wiki
Jump to: navigation, search


Grid Redstone.png  Function vector:cross
Returns the vector which resulted in the cross product of the two vectors.
Syntax vector:cross(vector vect)
Returns number
Part of ComputerCraft
API vector

Examples

Grid paper.png  Example
Creates a cross product of two vectors and prints the resulting vector.
Code
local a = vector.new(1, 2, 3)
local b = vector.new(4, 5, 6)

local c = a:cross(b)

print(c.x)
print(c.y)
print(c.z)
--(-3)
--6
--(-3)



Grid paper.png  Example
Code to recreate the function. Gives insight into what the function does.
Code
local a = vector.new(1, 2, 3)
local b = vector.new(2, 1, 2)

local c = vector.new(
 (a.y * b.z - a.z * b.y), 
 (a.z * b.x - z.x * b.z),
 (a.x * b.y - a.y * b.x))

--c.x = 1
--c.y = 4
--c.z = -3


It is important to note that a:cross(b) will not usually equal b:cross(a).

More information about cross products can be found at [1]

Personal tools
Namespaces
Variants
Actions
Navigation
Toolbox