| /* |
| * Copyright 2005 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.google.common.geometry; |
| |
| |
| public final strictfp class S1Angle implements Comparable<S1Angle> { |
| |
| private final double radians; |
| |
| public double radians() { |
| return radians; |
| } |
| |
| public double degrees() { |
| return radians * (180 / Math.PI); |
| } |
| |
| public long e5() { |
| return Math.round(degrees() * 1e5); |
| } |
| |
| public long e6() { |
| return Math.round(degrees() * 1e6); |
| } |
| |
| public long e7() { |
| return Math.round(degrees() * 1e7); |
| } |
| |
| /** |
| * The default constructor yields a zero angle. |
| */ |
| public S1Angle() { |
| this.radians = 0; |
| } |
| |
| private S1Angle(double radians) { |
| this.radians = radians; |
| } |
| |
| /** |
| * Return the angle between two points, which is also equal to the distance |
| * between these points on the unit sphere. The points do not need to be |
| * normalized. |
| */ |
| public S1Angle(S2Point x, S2Point y) { |
| this.radians = x.angle(y); |
| } |
| |
| @Override |
| public boolean equals(Object that) { |
| if (that instanceof S1Angle) { |
| return this.radians() == ((S1Angle) that).radians(); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| long value = Double.doubleToLongBits(radians); |
| return (int) (value ^ (value >>> 32)); |
| } |
| |
| public boolean lessThan(S1Angle that) { |
| return this.radians() < that.radians(); |
| } |
| |
| public boolean greaterThan(S1Angle that) { |
| return this.radians() > that.radians(); |
| } |
| |
| public boolean lessOrEquals(S1Angle that) { |
| return this.radians() <= that.radians(); |
| } |
| |
| public boolean greaterOrEquals(S1Angle that) { |
| return this.radians() >= that.radians(); |
| } |
| |
| public static S1Angle max(S1Angle left, S1Angle right) { |
| return right.greaterThan(left) ? right : left; |
| } |
| |
| public static S1Angle min(S1Angle left, S1Angle right) { |
| return right.greaterThan(left) ? left : right; |
| } |
| |
| public static S1Angle radians(double radians) { |
| return new S1Angle(radians); |
| } |
| |
| public static S1Angle degrees(double degrees) { |
| return new S1Angle(degrees * (Math.PI / 180)); |
| } |
| |
| public static S1Angle e5(long e5) { |
| return degrees(e5 * 1e-5); |
| } |
| |
| public static S1Angle e6(long e6) { |
| // Multiplying by 1e-6 isn't quite as accurate as dividing by 1e6, |
| // but it's about 10 times faster and more than accurate enough. |
| return degrees(e6 * 1e-6); |
| } |
| |
| public static S1Angle e7(long e7) { |
| return degrees(e7 * 1e-7); |
| } |
| |
| /** |
| * Writes the angle in degrees with a "d" suffix, e.g. "17.3745d". By default |
| * 6 digits are printed; this can be changed using setprecision(). Up to 17 |
| * digits are required to distinguish one angle from another. |
| */ |
| @Override |
| public String toString() { |
| return degrees() + "d"; |
| } |
| |
| @Override |
| public int compareTo(S1Angle that) { |
| return this.radians < that.radians ? -1 : this.radians > that.radians ? 1 : 0; |
| } |
| } |