dot.md

dot - returns the scalar dot product of two vectors.

Code usage:

DMath.dot(a,b);

Math formula:

$${x} = {a_x · b_x + a_y · b_y + a_z · b_z}$$

parameters:

a - { First vector } b - { Second vector}

Description

Returns the scalar dot product of two same-typed vectors a and b.

Code Implementation

dot implementation for a float3 vector.

float dot(float3 a, float3 b)
{
  return a.x*b.x + a.y*b.y + a.z*b.z;
}

Performance Info

dot is usually very inexpensive, but it can get a little more expensive if used in loops, but nothing that creates major bottlenecks.