Existence of primitive in empty procedural ?

[nicholas_yue]

Hi,

 

  I wrote a basic Mantra procedural to understand about querying geometry information from the host geo but am surprise that I get 72 primitive in an otherwise empty geo with just a SHOP_Network.

 

  I was expecting zero as the are no geometry SOP in the /obj/geo1

 

  Where does the 72 primitive comes from ?

 

const GU_Detail *gdp = VRAY_Procedural::queryGeometry(handle,0);

if (gdp)

{

GA_Size primitiveCount = gdp->primitives().entries();

printf("Procedural \"%s\"'s primitive count = %d\n",VRAY_Procedural::queryName(handle), primitiveCount);

for (GA_Offset primIndex = 0; primIndex < primitiveCount; ++primIndex)

{

printf("Primitive[%d] is of type %s\n",primIndex

 ,gdp->getPrimitiveList().get(primIndex)->getTypeName());

}

}

 

 

  Print out looks like this:

 

 Procedural "/obj/geo1"'s primitive count = 72

Primitive[0] is of type Poly

Primitive[1] is of type Poly

Primitive[2] is of type Poly

 

 

Cheers

 

[crunch]

Hi,

 

  I wrote a basic Mantra procedural to understand about querying geometry information from the host geo but am surprise that I get 72 primitive in an otherwise empty geo with just a SHOP_Network.

 

...

 

I believe vm_forcegeometry is on by default.  So, the geometry for the procedural object will be sent down regardless.