1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.geometry; 18 19 /** 20 * An abstract directed edge from one S2Point to another S2Point. 21 * 22 * @author kirilll@google.com (Kirill Levin) 23 */ 24 public final class S2Edge { 25 26 private final S2Point start; 27 private final S2Point end; 28 S2Edge(S2Point start, S2Point end)29 public S2Edge(S2Point start, S2Point end) { 30 this.start = start; 31 this.end = end; 32 } 33 getStart()34 public S2Point getStart() { 35 return start; 36 } 37 getEnd()38 public S2Point getEnd() { 39 return end; 40 } 41 42 @Override toString()43 public String toString() { 44 return String.format("Edge: (%s -> %s)\n or [%s -> %s]", 45 start.toDegreesString(), end.toDegreesString(), start, end); 46 } 47 48 @Override hashCode()49 public int hashCode() { 50 return getStart().hashCode() - getEnd().hashCode(); 51 } 52 53 @Override equals(Object o)54 public boolean equals(Object o) { 55 if (o == null || !(o instanceof S2Edge)) { 56 return false; 57 } 58 S2Edge other = (S2Edge) o; 59 return getStart().equals(other.getStart()) && getEnd().equals(other.getEnd()); 60 } 61 } 62