foreach -setpointattrib

[logix1390]

hello. I am trying to set color to the points in the array that the nearpoints function found. I am trying to set it in a foreach loop. However, it is not working for some strange reason. I'm sure im going wrong somewhere. Here it is:

i[]@ptarray =  nearpoints(1, v@P, chf("maxDist"), 133);

foreach(int pt; @ptarray){
    setpointattrib(0, "Cd", pt, {1,0,0});
}

 

foreachloop_setpointattrib.hipnc

[bunker]

The logic doesn't work:
nearpoints() will give you point numbers from the second input, they have nothing to do with the first input point numbers.
Here are 2 simple ways of doing what you want, just testing if you get at least one point within a search radius.
 

// 1) nearpoint 
int pt = nearpoint(1,@P,chf("maxDist"));
if(pt!=-1)@Cd={1,0,0};

// 2) pointcloud
if(pcnumfound(pcopen(1,"P",@P,chf("maxDist"),1))>0)@Cd={1,0,0};

 

[logix1390]

@bunker Thank you for the examples Bunker. Makes sense now