Find Minimum Distance

[resonanz]

Hi all!

I am trying to find the minimum distance between a buch of lines. Digging through the HDK Docs I found GU_Primitive::minimum(). As far as i undertand the function it needs a GU_Primitive & as input but I have a GEO_Primitive *. The problem is that i have no idea how I can convert the GEO_Primitive * to the GU_Primitive &. I am not an experienced programmer and have some troubles to understand the logic of pointers and references, particularly in this example. I would be very thankful if somebody could tell me what I am doing wrong.

The Code is as follow:

GEO_Primitive *prim1, *prim2;
GU_Primitive *guprim1, guprim2*;
float dist, u1, v1, u2, v2;

prim1 = gdp->primitives()(0);
prim2 = gdp->primitives()(1);

guprim1 = dynamic_cast<GU_Primitive *> (prim1);
guprim2 = dynamic_cast<GU_Primitive *> (prim2);

guprim1->minimum(guprim2, 1.0, &u1, &v1, &u2, &v2, 1);

Thanks in advance!

[symek]

Pointers? Well, I wouldn't be listen myself on your place, but, as a hopeless help, I could say it's enough to dereference a pointer. Function itself makes a reference from the object. So:

guprim1->minimum(*guprim2, 1.0, &u1, &v1, &u2, &v2, 1);

should work fine.

hth,

skk.

Edited September 18, 2011 by SYmek

[resonanz]

Thank you very much SYmek!

I thought it would be much more complicated. Hopefully all my journeys into HDK-Land will end up being that hassle-free!

Thanks again!

Edited September 18, 2011 by resonanz