Greg M. Johnson wrote:
>>  To reorient something and really know what
>> it's going to look like, you need to align
>> to two axis.
>
> I failed miserably in my attempt at this.
> Is there a generic solution already out there?

Not sure if this is exactly what you're looking for, but:

Suppose that you want the z axis aligned to Z_vector and the y axis
aligned to Normal_vector. If the Z_vector and the Normal_vector are not
perpendicular, you want the Z_vector to be dominant.

Now you can align the object using some code like this (untested code):

#include "math.inc"
#include "transforms.inc"
#declare ObjectZ = vnormalize(Z_vector);
#declare ObjectY = VPerp_Adjust(Normal_vector,Z_vector);
#declare ObjectX = vcross(ObjectY,ObjectZ);
#declare Trans = Matrix_Trans(ObjectX,ObjectY,ObjectZ,<0,0,0>);
object {MyObject transform {Trans}}

Well, that's the method I use all the time anyway.

Rune
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