public static void Raytrace(int x0, int y0, int x1, int y1, VisitMethod breakVisit)
{
int dx = Math.Abs(x1 - x0);
int dy = Math.Abs(y1 - y0);
int x = x0;
int y = y0;
int n = 1 + dx + dy;
int x_inc = (x1 > x0) ? 1 : -1;
int y_inc = (y1 > y0) ? 1 : -1;
int error = dx - dy;
dx *= 2;
dy *= 2;
while (n > 0 && !breakVisit(x, y))
//for (; n > 0; --n)
{
if (error > 0)
{
x += x_inc;
error -= dy;
}
else
{
y += y_inc;
error += dx;
}
--n;
}
}
public MethodConversationNode(string text, string id, VisitMethod onVisit)
{
Text = text;
ID = id;
OnVisit = onVisit;
}
