howto use vector3d<f64> ?

zillion42 · Post by **zillion42** » Tue Feb 10, 2009 8:28 pm

I cant cast from vector3df to vector3d<f64>,
I cant add vector3df with vector3d<f64>,
I cant setPosition() with vector3d<f64>

is there any way I can actually use it ?

vitek · Post by **vitek** » Tue Feb 10, 2009 8:49 pm

You can use it in any context that is compatible with core::vector3df<f64>. Your application code can do this as much as you want, but once you get into the Irrlicht layer, you have to do some adapting. You can write functions to convert between the types pretty easily. Unfortunately, as soon as you convert to f32 you lose all of the precision, so you'll have to keep that in mind.

Why would you want to use f64 anyways?

Travis

zillion42 · Post by **zillion42** » Tue Feb 10, 2009 9:42 pm

my solar system size... i get octagon orbits on neptune

i found this... looks like work
http://irrlicht.sourceforge.net/phpBB2/ ... system+f64

EDIT:
^sounds like this guy tried a 1:1 scale

rogerborg · Post by **rogerborg** » Wed Feb 11, 2009 12:49 am

There are currently no implicit conversions between different vector precisions. We could add them, but I'd have expected that if you're choosing to operate in vector3d<f64> then you'd want explicitly to control the points where you convert to f32 and lose the precision.