/**
* Returns true if ed is equals to one of the edges that form this triangle.
*
* @param ed
* @return true if ed is an edge of this.
*/
public final boolean isEdgeOf(DEdge ed) {
for (DEdge e : edges) {
if (e.equals(ed)) {
return true;
}
}
return false;
}
/**
* Get the last edge that form, with e1 and e2, this triangle. If e1 or e2 do not belong to this
* triangle, return null.
*
* @param e1
* @param e2
* @return the edge of the triangle that is not e1 or e2. Null if e1 or e2 is not an edge of the
* triangle.
*/
public final DEdge getLastEdge(DEdge e1, DEdge e2) {
if (e1.equals(edges[0])) {
if (e2.equals(edges[1])) {
return edges[2];
} else if (e2.equals(edges[2])) {
return edges[1];
}
} else if (e1.equals(edges[1])) {
if (e2.equals(edges[0])) {
return edges[2];
} else if (e2.equals(edges[2])) {
return edges[0];
}
} else if (e1.equals(edges[2])) {
if (e2.equals(edges[0])) {
return edges[1];
} else if (e2.equals(edges[1])) {
return edges[0];
}
}
return null;
}
