Hopefully a simple question...
Nicholas Wilson via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Fri Jan 13 21:42:46 PST 2017
On Friday, 13 January 2017 at 16:56:43 UTC, WhatMeWorry wrote:
> I'm converting some C++ and glm code to D and gl3n. And I'm
> stumped at the following line.
>
>
> GLboolean CheckCollision(BallObject &one, GameObject &two) //
> AABB - Circle collision
> {
> // Get center point circle first
> glm::vec2 center(one.Position + one.Radius);
> . . .
> }
>
> one.Position is a vec2 (x and y) whereas Radius is a GLfloat
>
> // my D code statement
>
> vec2 center2 = one.position + one.radius; // D code with gl3n
>
> returns Error: incompatible types for ((one.position) +
> (one.radius)): 'Vector!(float, 2)' and 'float'
>
> I agree with the D code. A vec and scalar can't be added
> together. So why (or how) is the glm code working?
>
>
> I looked at https://github.com/g-truc/glm project source, but
> I'm not even sure where to start?
>
> Thanks
If you're doing game dev stuff I'd highly recommend using/taking
a look at
https://github.com/d-gamedev-team/ and in particular using
https://github.com/d-gamedev-team/gfm/ as your math library.
It appears to support what you want
https://github.com/d-gamedev-team/gfm/blob/master/math/gfm/math/vector.d#L53-59
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