public LinkedList<Vector> multiIntersect(Ray ray)
{
var intersections = new LinkedList<Vector>();
var rays = new LinkedList<Ray>();
var arcs = new LinkedList<Arc>();
getEdges(rays, arcs);
foreach (var side in rays) {
var sideIntersection = ray.intersect(side);
if (sideIntersection != null) {
intersections.AddLast(sideIntersection ?? new Vector());
}
}
foreach (var arc in arcs) {
var arcIntersections = arc.multiIntersect(ray);
if (arcIntersections != null) {
foreach (var inters in arcIntersections) {
intersections.AddLast(inters);
}
}
}
return intersections;
}
public AxisDirection? borderAnyIntersectionDirection(Ray ray, AxisDirection? exceptDir = null)
{
foreach (AxisDirection dir in Enum.GetValues(typeof(AxisDirection))) {
if (dir == exceptDir)
continue;
var side = lineForDirection(dir);
if (ray.intersect(side) != null) {
//(ray.intersect(side) ?? new Vector(0, 0)).draw(0xFF0000);
return dir;
}
}
return null;
}
public bool isIntersect(Ray ray)
{
var rays = new LinkedList<Ray>();
var arcs = new LinkedList<Arc>();
getEdges(rays, arcs);
foreach (var side in rays) {
var sideIntersection = ray.intersect(side);
if (sideIntersection != null) {
return true;
}
}
foreach (var arc in arcs) {
var arcIntersections = arc.multiIntersect(ray);
if (arcIntersections != null) {
return true;
}
}
return false;
}
public bool isIntersect(Ray ray)
{
foreach (AxisDirection dir in Enum.GetValues(typeof(AxisDirection))) {
var edge = edgeInDirection(dir);
if (ray.intersect(edge) != null) {
return true;
}
}
return false;
}