#reflect

calculate the reflection direction for an incident vector

#Declaration

• genType reflect(genType I, genType N)

#Parameters

• I: Specifies the incident vector.
• N: Specifies the normal vector.

#Description

For a given incident vector I and surface normal N reflect returns the reflection direction calculated as I - 2.0 * dot(N, I) * N. N should be normalized in order to achieve the desired result.

#See Also

• dot
• refract