gl3n does not seem to have an ortho function like glm. Any replacements?

[Rene Zwanenburg via Digitalmars-d-learn]

On Sunday, 4 October 2015 at 21:30:43 UTC, WhatMeWorry wrote:
> I'm porting some C++/OpenGL/glm code over to D, And I've run 
> into a glm::ortho function.
>
> glm::mat4 projection = glm::ortho(0.0f, 
> static_cast<GLfloat>(WIDTH), 0.0f, static_cast <GLfloat> 
> (HEIGHT));
>
>
> gl3n is great for vecs and mats but does not appear to have an 
> ortho function.
>
> Any suggestions?
>
> Thanks in advance.

https://github.com/Dav1dde/gl3n/blob/master/gl3n/linalg.d#L1284