Wrangle

Numbers variable

@elemnum

Value

$FF = @Frame

$PT = @ptnum

$PR = @primnum

$NPT = @ptnum

Array

float test[] = {0,1,2,3,4,5}

or

f[]@test = {0,1,2,3,4,5}

Loop

f[]@test ;
for (int i = 0; i<10; i++ ){
    push(@test ,i)
}

List Match

int idlist[];
idlist = {1523,145,1738,1739,1743,1755,1756,159,1711,204,205,211,152,151,1742,1715,1706};
if(find(idlist,@id)>=0){
    @Cd = {0,1,0};
}

Condition Match

int condition = (@P.x>0) ? 1:0;

example of just adding noise(possibly shorter?)

@P=set(@P[0] , noise(set(@P[0],0,@P[2])) , @P[2]);

Using Channel

Just use ch("parm")

Importing point attribute from other slot

@P = point(@OpInput2,"P",@ptnum);

or

@P = point(1,"P",@ptnum);

or

@P = @opinput1_P;

@P.y = point(@OpInput2,"test",@ptnum);

@P = point("op:../box3","P",@ptnum);

Attribute Variable Mapping

f@test = 1;
addvariablename(geoself(), "test", "TEST");

Intrinsic(float value is not supported yet)

i@test = primintrinsic(0,"typeid",@primnum);

Changing Intrinsic Attribute

setattrib(geoself(), "primintrinsic", "volumebordertype", @primnum, -1, "constant", "set");

setattrib(geoself(), "primintrinsic", "volumebordervalue", @primnum, -1, 0.0, "set");

Mix

@Cd = lerp({1,0,0},{0,1,0},0);

Centroid

vector min, max;
getbbox(min,max);
vector center = (min+max)/2;

getbbox(1,min,max);

can get from other input

Point Cloud

pcopen(@OpInput2, "P", @P, $radius, $maxpoints)

pcfilter($handle, $channel)

pcnumfound($handle)

pciterate($handle)

Format

int handle = pcopen(@OpInput2, "P", @P, 1000, 1);
@v = pcfilter(handle, "v");

pcclose(handle);

Loop

while (pciterate(handle)){

}

Loop

int closept[] = pcfind(1,"P",@P, 0.5,10);
foreach (int pt; closept){
    test += point(1, "test", pt);
}

SDF push

float volsample = volumesample(1, 0, @P);
vector volumegrad = volumegradient(1, 0, @P);
vector pushOut = volumegrad * -volsample;
@P = @P + pushOut;

Noise

vector freq = {1,1,1};

vector offset = {0,0,0};

float amp = 0;

int turb = 5;

float rough = 0.5;

float atten = 1;

onoise(@P*freq - offset, turb, rough, atten) * amp

snoise(@P*freq - offset, turb, rough, atten) * amp

anoise(@P*freq - offset, turb, rough, atten) * amp

vop_correctperlinNoiseVF(@P*freq - offset, turb, rough, atten) * amp

vop_correctperlinNoiseVV(@P*freq - offset, turb, rough, atten) * amp

vop_simplexNoiseVF(@P*freq - offset, turb, rough, atten) * amp

vop_simplexNoiseVV(@P*freq - offset, turb, rough, atten) * amp

vop_perlinNoiseVF(@P*freq - offset, turb, rough, atten) * amp

vop_perlinNoiseVV(@P*freq - offset, turb, rough, atten) * amp

Remove Points(need to be cleaned. prims still exist)

if (@P.y<0){
    removepoint(geoself(), @ptnum);
}

Remove by NDC

vector ndc=toNDC("/obj/cam1",@P);
float ov = 0;
@Cd = ndc;
if(ndc[0]-ov<0 || ndc[0]+ov>1 || ndc[1]-ov<0 || ndc[1]+ov>1 || ndc[2]>0){
    removepoint(geoself(),@ptnum);
}

Remove Prim

if (@numvtx!=4){
    removeprim(geoself(), @primnum, 1);
}

Remove by vertex UV

if(@uv.x<0.5){
int prim = vertexprim( 0, @vtxnum );
removeprim( 0, prim, 1);
}

Create centre Point(Detail)

vector min, max;
getbbox(min, max);
vector centre = (min+max)/2;
for( int i=0; i<npoints(@OpInput1); i++ ){
    removepoint(geoself(), i);
}
int centPoint = addpoint(geoself(),centre);

Line to next Point

int a = addprim(geoself(), "polyline");
addvertex(geoself(), a, @ptnum);
addvertex(geoself(), a, @ptnum+1);

Isolating Edge Group

int edge_group[] = expandedgegroup(1, "group2");
for (int i = 0; i<len(edge_group); i+=2 ){
    int line = addprim(0, "polyline");
    int point1 = addpoint(0, vector(point(1,"P",edge_group[i])) );
    int point2 = addpoint(0, vector(point(1,"P",edge_group[i+1])) );
    addvertex(0, line, point1);
    addvertex(0, line, point2);
}

Adding Point and Line

int pp = addpoint(geoself(), @P + set(0,1,0) );
int a = addprim(geoself(), "polyline");
addvertex(geoself(), a, @ptnum);
addvertex(geoself(), a, pp);

For Loop

for( int i=0; i<10; i++ ){
    int pp = addpoint(geoself(), set(0,i,0) );
}

Neighbour Loop

f@A = 0;
for( int i=0; i<neighbourcount(0, @ptnum); i++ ){
    int np = neighbour(0,@ptnum,i);
    @A += point(0,"attr", np);
}

Resample (prim)

int segment = 50;
for( int i=0; i<=segment; i++ ){
vector a = primuv(0, "P", @primnum, set(float(i)/segment,0));
int pp = addpoint(geoself(), a );
addvertex(geoself(), @primnum, pp);
}
for( int i=0; i<primvertexcount(0, @primnum); i++ ){
    removepoint(geoself(), primpoint(0, @primnum, i));
}

Comment Block

/*
comment
*/