void getEdges(LinkedList<Ray> rays, LinkedList<Arc> arcs)
{
foreach (AxisDirection dir in Enum.GetValues(typeof(AxisDirection))) {
if (!canGoInDirection(dir)) {
var sideCenter = center + new Vector(dir) * (Constants.tileSize * 0.5 - Constants.roadMargin);
var sideHalfLength = (Constants.tileSize * 0.5 - Constants.roadMargin * 2);
var side = Ray.line(
sideCenter + new Vector(dir.turnLeft()) * sideHalfLength,
sideCenter + new Vector(dir.turnRight()) * sideHalfLength
);
rays.AddLast(side);
}
var nextDir = dir.turnLeft();
if (!canGoInDirection(dir) && !canGoInDirection(nextDir)) {
var arcCenter = center + (new Vector(dir) + new Vector(nextDir)) * (Constants.tileSize * 0.5 - Constants.roadMargin * 2);
var arc = new Arc(arcCenter, Constants.roadMargin, nextDir.angle(), dir.angle());
arcs.AddLast(arc);
} else if (canGoInDirection(dir) && canGoInDirection(nextDir)) {
var arcCenter = center + (new Vector(dir) + new Vector(nextDir)) * (Constants.tileSize * 0.5);
var arc = new Arc(arcCenter, Constants.roadMargin, nextDir.back().angle(), dir.back().angle());
arcs.AddLast(arc);
} else if (!canGoInDirection(dir) && canGoInDirection(nextDir)) {
var lineFrom = center + (new Vector(dir) + new Vector(nextDir)) * (Constants.tileSize * 0.5);
lineFrom = lineFrom - (new Vector(dir) * Constants.roadMargin);
var side = new Ray(lineFrom, new Vector(nextDir.back()) * Constants.roadMargin * 2);
rays.AddLast(side);
} else if (canGoInDirection(dir) && !canGoInDirection(nextDir)) {
var lineFrom = center + (new Vector(dir) + new Vector(nextDir)) * (Constants.tileSize * 0.5);
lineFrom = lineFrom - (new Vector(nextDir) * Constants.roadMargin);
var side = new Ray(lineFrom, new Vector(dir.back()) * Constants.roadMargin * 2);
rays.AddLast(side);
}
}
}
public bool isIntersect(Arc arc)
{
foreach (AxisDirection dir in Enum.GetValues(typeof(AxisDirection))) {
var edge = edgeInDirection(dir);
if (arc.intersect(edge) != null) {
return true;
}
}
return false;
}
