protected static UVertexList deltaVectors3(UVertexList input) {
UVertexList dl = new UVertexList();
boolean isClosed = input.isClosed();
for (int i = 0; i < input.size(); i++) {
UVertex vv = null, vn = null, vp = null;
vv = input.get(i);
if (i > 0) vp = input.get(i - 1);
if (i == 0 && isClosed) vp = input.last();
if (i < input.size() - 1) vn = input.get(i + 1);
else if (isClosed) vn = input.first();
if (vn != null) vn = vn.copy().sub(vv); // .norm();
if (vp != null) vp = vv.copy().sub(vp); // .norm();
if (vp != null && vn != null) vv = vn.add(vp).mult(0.5f);
else if (vn == null) vv = vp;
else vv = vn;
log(
i
+ "/"
+ input.size()
+ " "
+ isClosed
+ " vp="
+ (vp != null)
+ " vn="
+ (vn != null)
+ " "
+ vv.str());
dl.add(vv);
// if(i<input.size()-1) {
// tmp=input.get(i+1).copy().sub(input.get(i)).norm();
// if(i>0) tmp.add(
// input.get(i).copy().sub(input.get(i-1)).norm()).mult(0.5f);
// }
// else tmp=input.get(i).copy().sub(input.get(i-1));
// dl.add(tmp);
}
return dl;
}
private void initHeading(UVertex thedir) {
this.dir = thedir.copy().norm();
if (is2D) {
angle2D = dir.angleXY();
return;
}
Vector3D v = toVector(dir);
// System.out.println(v.getX()+" "+v.getY()+" "+v.getZ());
rot = new Rotation(v, new Vector3D(0, 0, 1)); // -UConst.HALF_PI);
// rot=new Rotation(order,dir.x,dir.y,dir.z);
}
/**
* Aligns and scales a UGeo instance so that the result geometry lies along the vector given by
* the input vertices. <code>geo</code> is assumed to be facing "forward" along the positive Z
* axis and will be scaled along that axis to match the length of the input vector, leaving the X
* and Y dimensions unchanged.
*
* @param geo
* @param v1
* @param v2
* @return
*/
public static UGeo align(UGeo geo, UVertex v1, UVertex v2, float extend) {
UVertex dir = v2.copy().sub(v1);
UHeading h = new UHeading(dir);
// UMB.log(dir.mag()+" "+geo.dimZ());
float m = dir.mag();
if (extend > 0) m += extend * 2;
geo.center().scale(1, 1, m / geo.dimZ());
h.align(geo.getV());
geo.translate(dir.mult(0.5f).add(v1));
return geo;
}