NET/worlds/scape/BoundBoxTemp.java


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package NET.worlds.scape;

public class BoundBoxTemp {
   private static Recycler recycler = new Recycler();
   public Point3Temp lo;
   public Point3Temp hi;

   public static BoundBoxTemp make(Point3Temp a, Point3Temp b) {
      BoundBoxTemp t = (BoundBoxTemp)recycler.alloc();
      if (t == null) {
         recycler.recycle(new BoundBoxTemp());
         t = (BoundBoxTemp)recycler.alloc();
      }

      t.lo = Point3Temp.make(a);
      t.hi = Point3Temp.make(b);
      if (a.x > b.x) {
         t.lo.x = b.x;
         t.hi.x = a.x;
      }

      if (a.y > b.y) {
         t.lo.y = b.y;
         t.hi.y = a.y;
      }

      if (a.z > b.z) {
         t.lo.z = b.z;
         t.hi.z = a.z;
      }

      return t;
   }

   public static BoundBoxTemp make(BoundBoxTemp b) {
      return make(b.lo, b.hi);
   }

   private BoundBoxTemp() {
   }

   public boolean contains(Point3Temp p) {
      return p.x >= this.lo.x && p.x <= this.hi.x && p.y >= this.lo.y && p.y <= this.hi.y && p.z >= this.lo.z && p.z <= this.hi.z;
   }

   public boolean isEmpty() {
      return this.lo.x == this.hi.x && this.lo.y == this.hi.y && this.lo.z == this.hi.z;
   }

   public boolean overlaps(BoundBoxTemp r) {
      return !(this.hi.x < r.lo.x) && !(r.hi.x < this.lo.x) && !(this.hi.y < r.lo.y) && !(r.hi.y < this.lo.y) && !(this.hi.z < r.lo.z) && !(r.hi.z < this.lo.z);
   }

   public void encompass(Point3Temp p) {
      if (p.x < this.lo.x) {
         this.lo.x = p.x;
      }

      if (p.y < this.lo.y) {
         this.lo.y = p.y;
      }

      if (p.z < this.lo.z) {
         this.lo.z = p.z;
      }

      if (p.x > this.hi.x) {
         this.hi.x = p.x;
      }

      if (p.y > this.hi.y) {
         this.hi.y = p.y;
      }

      if (p.z > this.hi.z) {
         this.hi.z = p.z;
      }
   }

   @Override
   public String toString() {
      return "BoundBoxTemp[lo=" + this.lo + ", hi=" + this.hi + "]";
   }
}