Home » Discussion forums » OpenTK » Development
wayron's picture

Order of the matrix4

Posted Wednesday, 16 November, 2011 - 11:24 by wayron in

Hi,

I wonder why OpenTK keeps translation in row3 of the matrix,
why it's not col3 like in OpenGL ?
In this case order of the operations is Translation x Rotation x Scale,
when in OpenGL normally it's opposite Scale x Rotation x Translation
Is it deliberately done ?

‹ Over 20000 warnings during compilation on Mac OS X Lion Small version issues with OpenTK, OpenGL and Cg ›

Comments

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
tksuoran's picture

Re: Order of the matrix4

Posted Monday, 21 November, 2011 - 12:14 by tksuoran

You can implement Matrix4 in a number of different ways. OpenTK has chosen one way. If you don't like it, you can implement your own (I did).

See http://and-what-happened.blogspot.com/2011/05/row-major-and-column-major... for some details about different choices you can make while implementing a matrix class.

wayron's picture

Re: Order of the matrix4

Posted Thursday, 24 November, 2011 - 10:22 by wayron

Great article, thanks for answer :)