Modern Math Transpose

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Transpose

Returns a matrix with its rows and columns swapped.

Syntax

Transpose( byref a as Mat4 ) as Mat4

Notes

• For a rotation matrix the transpose is the inverse, which is why a view matrix can be built without inverting anything.
• The storage is column-major -- m( column * 4 + row ) -- so transposing is also the conversion to and from a row-major API.
• Its own inverse.

Examples

#import "std/numeric"
using numeric

dim as Mat4 m
for i as int32 = 0 to 15
    m.m( i ) = i
next

dim as Mat4 t = Transpose( m )
print t.m( 1 )               '' 4 -- row and column exchanged

'' Its own inverse
print Transpose( t ).m( 1 )  '' 1

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