content: /*
   * Copyright (C) 2011 The Android Open Source Project
   *
   * 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 android.filterfw.geometry;
  
  import android.annotation.UnsupportedAppUsage;
  import java.lang.Math;
  
  /**
   * @hide
   */
  public class Point {
  
      @UnsupportedAppUsage
      public float x;
      @UnsupportedAppUsage
      public float y;
  
      @UnsupportedAppUsage
      public Point() {
      }
  
      @UnsupportedAppUsage
      public Point(float x, float y) {
          this.x = x;
          this.y = y;
      }
  
      public void set(float x, float y) {
          this.x = x;
          this.y = y;
      }
  
      public boolean IsInUnitRange() {
          return x >= 0.0f && x <= 1.0f &&
                 y >= 0.0f && y <= 1.0f;
      }
  
      public Point plus(float x, float y) {
          return new Point(this.x + x, this.y + y);
      }
  
      public Point plus(Point point) {
          return this.plus(point.x, point.y);
      }
  
      public Point minus(float x, float y) {
          return new Point(this.x - x, this.y - y);
      }
  
      public Point minus(Point point) {
          return this.minus(point.x, point.y);
      }
  
      public Point times(float s) {
          return new Point(this.x * s, this.y * s);
      }
  
      public Point mult(float x, float y) {
          return new Point(this.x * x, this.y * y);
      }
  
      public float length() {
          return (float)Math.hypot(x, y);
      }
  
      public float distanceTo(Point p) {
          return p.minus(this).length();
      }
  
      public Point scaledTo(float length) {
          return this.times(length / this.length());
      }
  
      public Point normalize() {
          return this.scaledTo(1.0f);
      }
  
      public Point rotated90(int count) {
          float nx = this.x;
          float ny = this.y;
          for (int i = 0; i < count; ++i) {
              float ox = nx;
              nx = ny;
              ny = -ox;
          }
          return new Point(nx, ny);
      }
  
      public Point rotated(float radians) {
          // TODO(renn): Optimize: Keep cache of cos/sin values
          return new Point((float)(Math.cos(radians) * x - Math.sin(radians) * y),
                           (float)(Math.sin(radians) * x + Math.cos(radians) * y));
      }
  
      public Point rotatedAround(Point center, float radians) {
          return this.minus(center).rotated(radians).plus(center);
      }
  
      @Override
      public String toString() {
          return "(" + x + ", " + y + ")";
      }
  }
  