com.github.skjolber.packing.ep.points2d.Point2DList Maven / Gradle / Ivy
package com.github.skjolber.packing.ep.points2d;
import java.util.List;
import com.github.skjolber.packing.api.Placement2D;
import com.github.skjolber.packing.api.ep.Point2D;
/**
*
* Custom list for working with points.
*
*/
public class Point2DList> {
private int size = 0;
private Point2D
[] points = new Point2D[16];
@SuppressWarnings("unchecked")
public void ensureAdditionalCapacity(int count) {
ensureCapacity(size + count);
}
@SuppressWarnings("unchecked")
public void ensureCapacity(int size) {
if(points.length < size) {
Point2D[] nextPoints = new Point2D[size];
System.arraycopy(this.points, 0, nextPoints, 0, this.size);
this.points = nextPoints;
}
}
public void add(Point point) {
points[size] = point;
size++;
}
public int size() {
return size;
}
public void reset() {
for(int i = 0; i < points.length; i++) {
points[i] = null;
}
size = 0;
}
public Point get(int i) {
return (Point) points[i];
}
public boolean isEmpty() {
return size == 0;
}
public void clear() {
size = 0;
}
/**
* Returns the hash code value for this list.
*
*
This implementation uses exactly the code that is used to define the
* list hash function in the documentation for the {@link List#hashCode}
* method.
*
* @return the hash code value for this list
*/
public int hashCode() {
int hashCode = 1;
for(int i = 0; i < size; i++) {
hashCode = 31*hashCode + points[i].hashCode();
}
return hashCode;
}
@SuppressWarnings("unchecked")
@Override
public boolean equals(Object obj) {
if(obj instanceof Point2DList) {
Point2DList other = (Point2DList)obj;
if(other.size() == size) {
for(int i = 0; i < size; i++) {
if(!points[i].equals(other.get(i))) {
return false;
}
}
}
return true;
}
return super.equals(obj);
}
public Point2D[] getPoints() {
return points;
}
}