public static Edge createBisectingEdge(Site site0,Site site1)
{
float dx,dy,absdx,absdy;
float a,b,c;
dx=site1.x-site0.x;
dy=site1.y-site0.y;
absdx=dx>0?dx:-dx;
absdy=dy>0?dy:-dy;
c=site0.x*dx+site0.y*dy+(dx*dx+dy*dy)*0.5;
if (absdx > absdy)
{
a = 1.0; b = dy/dx; c /= dx;
}
else
{
b = 1.0; a = dx/dy; c /= dy;
}
Edge edge=Edge.create();
edge.leftSite = site0;
edge.rightSite = site1;
site0.addEdge(edge);
site1.addEdge(edge);
edge._leftVertex = null;
edge._rightVertex = null;
edge.a = a; edge.b = b; edge.c = c;
//trace("createBisectingEdge: a ", edge.a, "b", edge.b, "c", edge.c);
return edge;
}