/*
* (non-Javadoc)
*
* @see wblut.hemesh.HE_Creator#create()
*/
@Override
protected HE_Mesh createBase() {
final WB_Point[] vertices = new WB_Point[(tubefacets + 1) * (torusfacets + 1)];
final WB_Point[] uvws = new WB_Point[(tubefacets + 1) * (torusfacets + 1)];
final double dtua = (2 * Math.PI) / tubefacets;
final double dtoa = (2 * Math.PI) / torusfacets;
final double dv = 1.0 / tubefacets;
final double du = 1.0 / torusfacets;
final double dtwa = (twist * dtoa) / tubefacets;
int id = 0;
WB_Point basevertex;
for (int j = 0; j < torusfacets + 1; j++) {
final int lj = (j == torusfacets) ? 0 : j;
final double ca = Math.cos(lj * dtoa);
final double sa = Math.sin(lj * dtoa);
for (int i = 0; i < tubefacets + 1; i++) {
final int li = (i == tubefacets) ? 0 : i;
basevertex =
new WB_Point(
Ro + (Ri * Math.cos((dtua * li) + (j * dtwa))),
0,
Ri * Math.sin((dtua * li) + (j * dtwa)));
vertices[id] = new WB_Point(ca * basevertex.xd(), sa * basevertex.xd(), basevertex.zd());
uvws[id] = new WB_Point(j * du, i * dv, 0);
id++;
}
}
final int nfaces = tubefacets * torusfacets;
id = 0;
final int[][] faces = new int[nfaces][];
int j = 0;
for (j = 0; j < torusfacets; j++) {
for (int i = 0; i < tubefacets; i++) {
faces[id] = new int[4];
faces[id][0] = i + (j * (tubefacets + 1));
faces[id][1] = i + ((j + 1) * (tubefacets + 1));
faces[id][2] = (i + 1) + ((j + 1) * (tubefacets + 1));
faces[id][3] = (i + 1) + (j * (tubefacets + 1));
id++;
}
}
/*
* for (int i = 0; i < tubefacets; i++) { faces[id] = new int[4];
* faces[id][0] = i + ((torusfacets - 1) * (tubefacets + 1));
* faces[id][1] = (i + twist) % (tubefacets + 1) + (torusfacets *
* (tubefacets + 1)); faces[id][2] = (i + twist + 1) % (tubefacets + 1)
* + (torusfacets * (tubefacets + 1)); faces[id][3] = (i + 1) +
* ((torusfacets - 1) * (tubefacets + 1)); id++; }
*/
final HEC_FromFacelist fl = new HEC_FromFacelist();
fl.setVertices(vertices).setFaces(faces).setUVW(uvws);
return fl.createBase();
}
