Did a post recently about nice normals for inflating and deflating mesh inside #Houdini. @PaleoPixels gave the suggestion to do it with vex and so I did... All I can say is, what a great learning experience. You can find the code in the description, enjoy :)
@sidefx @sidefxlabs
@sidefx @sidefxlabs
//Get point position and set neighbour directions
vector pos1 = point(0,"P",@ptnum+1);
vector pos2 = point(0,"P",@ptnum-1);
vector dir1 = normalize(pos1-@p);
vector dir2 = normalize(pos2-@p);
vector ang1 = normalize(dir1+dir2);
vector ang2 = normalize(ang1*-1);
vector pos1 = point(0,"P",@ptnum+1);
vector pos2 = point(0,"P",@ptnum-1);
vector dir1 = normalize(pos1-@p);
vector dir2 = normalize(pos2-@p);
vector ang1 = normalize(dir1+dir2);
vector ang2 = normalize(ang1*-1);
//Apply angles to normal based on cross-product direction
vector cproc = cross(dir1,dir2);
float up = cproc.y;
if(up > 0){
v@N = ang2;
}else{
v@N = ang1;
}
vector cproc = cross(dir1,dir2);
float up = cproc.y;
if(up > 0){
v@N = ang2;
}else{
v@N = ang1;
}
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