51 lines
1.4 KiB
Java
51 lines
1.4 KiB
Java
package com.boydti.fawe.object;
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public class IntegerPair {
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public int x;
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public int z;
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public IntegerPair(final int x, final int z) {
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this.x = x;
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this.z = z;
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}
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int hash;
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@Override
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public int hashCode() {
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if (hash == 0) {
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long val = 0;
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if (x >= 0) {
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if (z >= 0) {
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val = (x * x) + (3 * x) + (2 * x * z) + z + (z * z);
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} else {
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final int z1 = -z;
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val = (x * x) + (3 * x) + (2 * x * z1) + z1 + (z1 * z1) + 1;
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}
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} else {
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final int x1 = -x;
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if (z >= 0) {
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val = -((x1 * x1) + (3 * x1) + (2 * x1 * z) + z + (z * z));
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} else {
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final int z1 = -z;
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val = -((x1 * x1) + (3 * x1) + (2 * x1 * z1) + z1 + (z1 * z1) + 1);
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}
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}
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hash = (int) (val % Integer.MAX_VALUE);
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}
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return hash;
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}
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@Override
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public boolean equals(final Object obj) {
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if (this == obj) {
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return true;
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}
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if ((obj == null) || (hashCode() != obj.hashCode()) || (getClass() != obj.getClass())) {
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return false;
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}
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final IntegerPair other = (IntegerPair) obj;
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return ((x == other.x) && (z == other.z));
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}
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}
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