89 lines
2.0 KiB
Java
89 lines
2.0 KiB
Java
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.graphics;
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import android.util.FloatMath;
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/**
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* PointF holds two float coordinates
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*/
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public class PointF {
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public float x;
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public float y;
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public PointF() {}
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public PointF(float x, float y) {
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this.x = x;
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this.y = y;
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}
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public PointF(Point p) {
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this.x = p.x;
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this.y = p.y;
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}
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/**
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* Set the point's x and y coordinates
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*/
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public final void set(float x, float y) {
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this.x = x;
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this.y = y;
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}
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/**
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* Set the point's x and y coordinates to the coordinates of p
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*/
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public final void set(PointF p) {
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this.x = p.x;
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this.y = p.y;
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}
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public final void negate() {
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x = -x;
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y = -y;
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}
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public final void offset(float dx, float dy) {
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x += dx;
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y += dy;
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}
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/**
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* Returns true if the point's coordinates equal (x,y)
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*/
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public final boolean equals(float x, float y) {
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return this.x == x && this.y == y;
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}
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/**
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* Return the euclidian distance from (0,0) to the point
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*/
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public final float length() {
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return length(x, y);
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}
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/**
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* Returns the euclidian distance from (0,0) to (x,y)
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*/
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public static float length(float x, float y) {
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return FloatMath.sqrt(x * x + y * y);
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}
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}
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