Curves distributing points

[RTHMan]

Is it possible to distribute scatter points/spheres from curves? I want to try something like the curves in the photo. They're from this video. JBL “The Making-Of Chameleon” on Vimeo

[konstantin magnus]

Hi Robert,

the sweep node has a ribbon mode you could use for adding points, scattering on or creating a triangulated patch from it.

sweep_scatter.hiplc

[RTHMan]

From the points, can I do a Voronoi fracture?

[konstantin magnus]

Sure, but you could also compute a dual mesh using the divide node on a remeshed surface just like in the video. 

[Librarian]

@RTHMan just feed on Magnus Example
make Att-Randomize pscale than
 

matrix rot = maketransform(0,0,0,{12,0,0},1,@P);
vector temp_pos = @P +@pscale *{0,1,0};
int prim = addprim(0,"polyline",addpoint(0,temp_pos));
setprimattrib(0,"pscale",prim,@pscale);
setprimattrib(0,"center",prim,@P);
vector normal ;
     for (int i =0; i < 30;i++){
        temp_pos*= rot;
        addvertex(0,prim,addpoint(0,temp_pos));
        }
removepoint(0,@ptnum);

 

@center = prim(0,"center",@primnum);
@pscale = prim(0,"pscale",@primnum);
float offset = @pscale ;
i[]@prims= pcfind_radius(1,"P","pscale",1,@center,@pscale,25);
removevalue(@prims,i@primnum);

vector n;
float depth;

vector near_pos;
float near_pscale;
float dist;

vector r = @P- @center;
foreach(int prim;@prims){
       
       near_pos = point(1,"P",prim);
       n = normalize (near_pos-@center);
       near_pscale = point(1,"pscale",prim);
       dist = distance(@center,near_pos);
       
       
       offset =(@pscale / near_pscale)*dist/(1+(@pscale / near_pscale));
       if (dot(n,r)-offset>0){
       
       @P-= n*(dot (n,r)-offset);
       }
       
     }  
       

 

[RTHMan]

 Konstantin, can I jitter the points that are on the inside?

[konstantin magnus]

4 hours ago, RTHMan said:

 Konstantin, can I jitter the points that are on the inside?

Sure, the group node supports selecting borders.

sweep_scatter_2.hiplc