int pointhedgenext(<geometry>geometry, int hedge)
<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.
hedge
Input half-edge.
Returns
The next half-edge that has the same source as hedge.
Successive calls to this function iterate over all outgoing half-edges out of the same point. The iteration order does not necessarily agree with the order of the edges around a point in a manifold setting.
Returns -1 if hedge is not valid, or the there are no more shared vertices with the source vertex of this hedge (same as op:vertexnext).
Examples ¶
int edge_count = 0; // Count number of *edges* (not half-edges) incident to point number 23. int hout = pointhedge("defgeo.bgeo", 23); while ( hout != -1 ) { if (hedge_isprimary("defgeo.bgeo", hout)) edge_count++; int hin = hedge_prev("defgeo.bgeo", hout); if (hedge_isprimary("defgeo.bgeo", hin)) edge_count++; hout = pointhedgenext("defgeo", hout); }
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