Guillaume Laforge

v2n

About Me

EXPERTISE
Developer
INDUSTRY
Film/TV

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LOCATION
Canada
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Houdini Skills

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Recent Forum Posts

Getting Curve point count June 21, 2017, 9:23 p.m.

Hi,

I can't figure out how to get the number of points of each curves in my SOP.
If the geo part is a polymesh, HAPI_GetFaceCounts() is giving me this information.
But if the geo part is a curve, it does nothing.

HAPI_CurveInfo got a vertexCount, but it returns just the first curve point count.
My geo got several curves with different point count, so I need more than that.

Is there something like HAPI_GetPointCountPerCurve() ?

Thanks
Guillaume

About HAPI_GeoInfo::partCount May 11, 2017, 11:26 a.m.

Forget about my question. Setting HAPI_CookOptions.splitGeosByGroup to true make it behave as explained in the doc.

Nothing to see here .

About HAPI_GeoInfo::partCount May 11, 2017, 11:06 a.m.

Hi,

I would like to know if it is possible to get more than one part of the same type in a geometry ?

for example, in the following code snippet:

int meshPartCount = 0;

for(int i=0; i< geoInfo.partCount; ++i) {
    HAPI_PartInfo partInfo =  GetPartInfo(i);
    if(partInfo.type == HAPI_PARTTYPE_MESH){
        meshPartCount++
    }
}

Is it possible to get meshPartCount greater than one?

The documentation [sidefx.com] is saying that “there will be 1 part per primitive group”, so I tried to query parts in a digital asset that is creating a simple polymesh with two primitive groups. HAPI always returns one part of type HAPI_PARTTYPE_MESH.

I'm confused about the “per primitive group” mentionned in HAPI doc. Is it the same than classic Houdini groups ?

Thanks
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