public boolean lessThan(Element e) {
if (dim < e.getDim()) {
return false;
}
if (dim > e.getDim()) {
return true;
}
for (int i = 0; i < dim; i++) {
if (coords[i].lessThan(e.coords[i])) {
return true;
} else if (coords[i].greaterThan(e.coords[i])) {
return false;
}
}
return false;
}
/**
* Scans all the edges of the two elements and if it finds one that is equal, then sets this as
* the Edge of the EdgeRelation
*/
public Edge getRelatedEdge(Element e) {
int edim = e.getDim();
Element.Edge my_edge, e_edge0, e_edge1, e_edge2 = null;
my_edge = edges[0];
e_edge0 = e.edges[0];
if (my_edge.equals(e_edge0)) {
return my_edge;
}
e_edge1 = e.edges[1];
if (my_edge.equals(e_edge1)) {
return my_edge;
}
if (edim == 3) {
e_edge2 = e.edges[2];
if (my_edge.equals(e_edge2)) {
return my_edge;
}
}
my_edge = edges[1];
if (my_edge.equals(e_edge0)) {
return my_edge;
}
if (my_edge.equals(e_edge1)) {
return my_edge;
}
if (edim == 3) {
if (my_edge.equals(e_edge2)) {
return my_edge;
}
}
if (dim == 3) {
my_edge = edges[2];
if (my_edge.equals(e_edge0)) {
return my_edge;
}
if (my_edge.equals(e_edge1)) {
return my_edge;
}
if (edim == 3) {
if (my_edge.equals(e_edge2)) {
return my_edge;
}
}
}
return null;
}
/**
* @param e a segment or triangle
* @return if the current triangle has a common edge with e
*/
public boolean isRelated(Element e) {
int edim = e.getDim();
Element.Edge my_edge, e_edge0, e_edge1, e_edge2 = null;
my_edge = edges[0];
e_edge0 = e.edges[0];
if (my_edge.equals(e_edge0)) {
return true;
}
e_edge1 = e.edges[1];
if (my_edge.equals(e_edge1)) {
return true;
}
if (edim == 3) {
e_edge2 = e.edges[2];
if (my_edge.equals(e_edge2)) {
return true;
}
}
my_edge = edges[1];
if (my_edge.equals(e_edge0)) {
return true;
}
if (my_edge.equals(e_edge1)) {
return true;
}
if (edim == 3) {
if (my_edge.equals(e_edge2)) {
return true;
}
}
if (dim == 3) {
my_edge = edges[2];
if (my_edge.equals(e_edge0)) {
return true;
}
if (my_edge.equals(e_edge1)) {
return true;
}
if (edim == 3) {
if (my_edge.equals(e_edge2)) {
return true;
}
}
}
return false;
}
