Re: [boost] Is there any need for a math library doing vectors and matrices operations?

5 Nov 2008


      On Tue, Nov 4, 2008 at 8:48 PM, Christophe Riccio
<g.truc.creation@gmail.com> wrote:
...
I had a look on the implementation of swizzle operators "swizzle_demo_01.zip".
I seems that just allow permutations like:
vec4 v1;
vec4 v2;
...
v1.zyxw = v2.wxyz;
Other implementations could provide something like this:
v1.zyx = v2.xwx;
No, it allows any permutation:

float4 v1;
float4 v2;
...
v1.zy() = v2.wx();
v1.zyw() = v2.ywx();
v1.zyzz() = v2.zxwx();

--Michael Fawcett