| Since | 18.0 |
int [] pccone_radius(<geometry>geometry, string PChannel, string RadChannel, float radscale, vector P, vector dir, float angle, float max_distance, int maxpoints)
int [] pccone_radius(<geometry>geometry, string ptgroup, string PChannel, string RadChannel, float radscale, vector P, vector dir, float angle, float max_distance, int maxpoints)
<geometry>
When running in the context of a node (such as a wrangle SOP), this argument can be an integer representing the input number (starting at 0) to read the geometry from.
Alternatively, the argument can be a string specifying a geometry file (for example, a .bgeo) to read from. When running inside Houdini, this can be an op:/path/to/sop reference.
These functions open a geometry file and return a list of points within the cone whose apex is ‹P›, opens in the vector direction ‹dir›, and with angle ‹angle› to ‹dir›. Additionally, it only returns the closest ‹maxpoints› points within distance ‹max_distance› of ‹P›. Each of the points will be expanded by their ‹RadChannel› attribute, which will be dilated by ‹radscale›.
Using a radius channel allows intersection detection between spheres of varying radii. In this case you cannot use only your own sphere radius, as the intersecting sphere may have a much larger radius so not be in your search window. Because of this, it is also sensible to use a 0.0 ‹radius› with this function just to find all the source spheres that your query position is inside of.
The ptgroup is a point group that limits the points to search. This is a SOP-style group pattern, so can be something like 0-10 or @Cd.x>0.5. A blank string is treated as matching all points.
| See also | |
| proximity | |
| ptcloud |
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