/*
* Copyright (C) 2013 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.renderscript;
/**
* Vector version of the basic double type.
* Provides two double fields packed.
*/
public class Double2 {
public double x;
public double y;
public Double2() {
}
/** @hide */
public Double2(Double2 data) {
this.x = data.x;
this.y = data.y;
}
public Double2(double x, double y) {
this.x = x;
this.y = y;
}
/** @hide
* Vector add
*
* @param a
* @param b
* @return
*/
public static Double2 add(Double2 a, Double2 b) {
Double2 res = new Double2();
res.x = a.x + b.x;
res.y = a.y + b.y;
return res;
}
/** @hide
* Vector add
*
* @param value
*/
public void add(Double2 value) {
x += value.x;
y += value.y;
}
/** @hide
* Vector add
*
* @param value
*/
public void add(double value) {
x += value;
y += value;
}
/** @hide
* Vector add
*
* @param a
* @param b
* @return
*/
public static Double2 add(Double2 a, double b) {
Double2 res = new Double2();
res.x = a.x + b;
res.y = a.y + b;
return res;
}
/** @hide
* Vector subtraction
*
* @param value
*/
public void sub(Double2 value) {
x -= value.x;
y -= value.y;
}
/** @hide
* Vector subtraction
*
* @param a
* @param b
* @return
*/
public static Double2 sub(Double2 a, Double2 b) {
Double2 res = new Double2();
res.x = a.x - b.x;
res.y = a.y - b.y;
return res;
}
/** @hide
* Vector subtraction
*
* @param value
*/
public void sub(double value) {
x -= value;
y -= value;
}
/** @hide
* Vector subtraction
*
* @param a
* @param b
* @return
*/
public static Double2 sub(Double2 a, double b) {
Double2 res = new Double2();
res.x = a.x - b;
res.y = a.y - b;
return res;
}
/** @hide
* Vector multiplication
*
* @param value
*/
public void mul(Double2 value) {
x *= value.x;
y *= value.y;
}
/** @hide
* Vector multiplication
*
* @param a
* @param b
* @return
*/
public static Double2 mul(Double2 a, Double2 b) {
Double2 res = new Double2();
res.x = a.x * b.x;
res.y = a.y * b.y;
return res;
}
/** @hide
* Vector multiplication
*
* @param value
*/
public void mul(double value) {
x *= value;
y *= value;
}
/** @hide
* Vector multiplication
*
* @param a
* @param b
* @return
*/
public static Double2 mul(Double2 a, double b) {
Double2 res = new Double2();
res.x = a.x * b;
res.y = a.y * b;
return res;
}
/** @hide
* Vector division
*
* @param value
*/
public void div(Double2 value) {
x /= value.x;
y /= value.y;
}
/** @hide
* Vector division
*
* @param a
* @param b
* @return
*/
public static Double2 div(Double2 a, Double2 b) {
Double2 res = new Double2();
res.x = a.x / b.x;
res.y = a.y / b.y;
return res;
}
/** @hide
* Vector division
*
* @param value
*/
public void div(double value) {
x /= value;
y /= value;
}
/** @hide
* Vector division
*
* @param a
* @param b
* @return
*/
public static Double2 div(Double2 a, double b) {
Double2 res = new Double2();
res.x = a.x / b;
res.y = a.y / b;
return res;
}
/** @hide
* Vector dot Product
*
* @param a
* @return
*/
public double dotProduct(Double2 a) {
return (x * a.x) + (y * a.y);
}
/** @hide
* Vector dot Product
*
* @param a
* @param b
* @return
*/
public static Double dotProduct(Double2 a, Double2 b) {
return (b.x * a.x) + (b.y * a.y);
}
/** @hide
* Vector add Multiple
*
* @param a
* @param factor
*/
public void addMultiple(Double2 a, double factor) {
x += a.x * factor;
y += a.y * factor;
}
/** @hide
* Set vector value by double2
*
* @param a
*/
public void set(Double2 a) {
this.x = a.x;
this.y = a.y;
}
/** @hide
* Set vector negate
*/
public void negate() {
x = -x;
y = -y;
}
/** @hide
* Get vector length
*
* @return
*/
public int length() {
return 2;
}
/** @hide
* Return the element sum of vector
*
* @return
*/
public double elementSum() {
return x + y;
}
/** @hide
* Get the vector field value by index
*
* @param i
* @return
*/
public double get(int i) {
switch (i) {
case 0:
return x;
case 1:
return y;
default:
throw new IndexOutOfBoundsException("Index: i");
}
}
/** @hide
* Set the vector field value by index
*
* @param i
* @param value
*/
public void setAt(int i, double value) {
switch (i) {
case 0:
x = value;
return;
case 1:
y = value;
return;
default:
throw new IndexOutOfBoundsException("Index: i");
}
}
/** @hide
* Add the vector field value by index
*
* @param i
* @param value
*/
public void addAt(int i, double value) {
switch (i) {
case 0:
x += value;
return;
case 1:
y += value;
return;
default:
throw new IndexOutOfBoundsException("Index: i");
}
}
/** @hide
* Set the vector field value
*
* @param x
* @param y
*/
public void setValues(double x, double y) {
this.x = x;
this.y = y;
}
/** @hide
* Copy the vector to double array
*
* @param data
* @param offset
*/
public void copyTo(double[] data, int offset) {
data[offset] = x;
data[offset + 1] = y;
}
}