Modern Math Length

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Length

Returns the length of a vector.

Syntax

Length( byref a as Vec3 ) as float32

Notes

• The square root of LengthSquared, and the only part of vector arithmetic that is not exact -- the root is a BOUNDED operation, accurate to a stated ulp.
• For comparing two lengths, use LengthSquared and skip the root entirely.
• Overloaded for Vec2, Vec3, Vec4 and Quat.

Examples

#import "std/numeric"
using numeric

dim as Vec3 v = type<Vec3>( 3, 4, 0 )
print Length( v )            '' 5

'' For a COMPARISON the root is wasted work
dim as Vec3 w = type<Vec3>( 1, 2, 2 )
print LengthSquared( v ) > LengthSquared( w ) '' -1 (true)

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Library: Math Library
Category: Math Library
Documented under: Members