ezEngine  Milestone 7
ezMatrixLayout Struct Reference

Enum to describe which memory layout is used to store a matrix in a float array. More...

#include <Declarations.h>

Public Types

enum  Enum { RowMajor, ColumnMajor }
 

Detailed Description

Enum to describe which memory layout is used to store a matrix in a float array.

All ezMatX classes use column-major format internally. That means they contain one array of, e.g. 16 elements, and the first elements represent the first column, then the second column, etc. So the data is stored column by column and is thus column-major. Some other libraries, such as OpenGL or DirectX require data represented either in column-major or row-major format. ezMatrixLayout allows to retrieve the data from an ezMatX class in the proper format, and it also allows to pass matrix data as an array back in the ezMatX class, and have it converted properly. That means, if you need to pass the content of an ezMatX to a function that requires the data in row-major format, you specify that you want to convert the matrix to ezMatrixLayout::RowMajor format and you will get the data properly transposed. If a function requires data in column-major format, you specify ezMatrixLayout::ColumnMajor and you get it in column-major format (which is simply a memcpy).

Member Enumeration Documentation

Enumerator
RowMajor 

The matrix is store in row-major format.

ColumnMajor 

The matrix is store in column-major format.


The documentation for this struct was generated from the following file: