/*
* 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 float type.
* Provides two float fields packed.
*/
public class Float2 {
public float x;
public float y;
public Float2() {
}
/** @hide */
public Float2(Float2 data) {
this.x = data.x;
this.y = data.y;
}
public Float2(float x, float y) {
this.x = x;
this.y = y;
}
/** @hide
* Vector add
*
* @param a
* @param b
* @return
*/
public static Float2 add(Float2 a, Float2 b) {
Float2 res = new Float2();
res.x = a.x + b.x;
res.y = a.y + b.y;
return res;
}
/** @hide
* Vector add
*
* @param value
*/
public void add(Float2 value) {
x += value.x;
y += value.y;
}
/** @hide
* Vector add
*
* @param value
*/
public void add(float value) {
x += value;
y += value;
}
/** @hide
* Vector add
*
* @param a
* @param b
* @return
*/
public static Float2 add(Float2 a, float b) {
Float2 res = new Float2();
res.x = a.x + b;
res.y = a.y + b;
return res;
}
/** @hide
* Vector subtraction
*
* @param value
*/
public void sub(Float2 value) {
x -= value.x;
y -= value.y;
}
/** @hide
* Vector subtraction
*
* @param a
* @param b
* @return
*/
public static Float2 sub(Float2 a, Float2 b) {
Float2 res = new Float2();
res.x = a.x - b.x;
res.y = a.y - b.y;
return res;
}
/** @hide
* Vector subtraction
*
* @param value
*/
public void sub(float value) {
x -= value;
y -= value;
}
/** @hide
* Vector subtraction
*
* @param a
* @param b
* @return
*/
public static Float2 sub(Float2 a, float b) {
Float2 res = new Float2();
res.x = a.x - b;
res.y = a.y - b;
return res;
}
/** @hide
* Vector multiplication
*
* @param value
*/
public void mul(Float2 value) {
x *= value.x;
y *= value.y;
}
/** @hide
* Vector multiplication
*
* @param a
* @param b
* @return
*/
public static Float2 mul(Float2 a, Float2 b) {
Float2 res = new Float2();
res.x = a.x * b.x;
res.y = a.y * b.y;
return res;
}
/** @hide
* Vector multiplication
*
* @param value
*/
public void mul(float value) {
x *= value;
y *= value;
}
/** @hide
* Vector multiplication
*
* @param a
* @param b
* @return
*/
public static Float2 mul(Float2 a, float b) {
Float2 res = new Float2();
res.x = a.x * b;
res.y = a.y * b;
return res;
}
/** @hide
* Vector division
*
* @param value
*/
public void div(Float2 value) {
x /= value.x;
y /= value.y;
}
/** @hide
* Vector division
*
* @param a
* @param b
* @return
*/
public static Float2 div(Float2 a, Float2 b) {
Float2 res = new Float2();
res.x = a.x / b.x;
res.y = a.y / b.y;
return res;
}
/** @hide
* Vector division
*
* @param value
*/
public void div(float value) {
x /= value;
y /= value;
}
/** @hide
* Vector division
*
* @param a
* @param b
* @return
*/
public static Float2 div(Float2 a, float b) {
Float2 res = new Float2();
res.x = a.x / b;
res.y = a.y / b;
return res;
}
/** @hide
* Vector dot Product
*
* @param a
* @return
*/
public float dotProduct(Float2 a) {
return (x * a.x) + (y * a.y);
}
/** @hide
* Vector dot Product
*
* @param a
* @param b
* @return
*/
public static float dotProduct(Float2 a, Float2 b) {
return (b.x * a.x) + (b.y * a.y);
}
/** @hide
* Vector add Multiple
*
* @param a
* @param factor
*/
public void addMultiple(Float2 a, float factor) {
x += a.x * factor;
y += a.y * factor;
}
/** @hide
* set vector value by float2
*
* @param a
*/
public void set(Float2 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 float elementSum() {
return x + y;
}
/** @hide
* get the vector field value by index
*
* @param i
* @return
*/
public float 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, float 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, float 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(float x, float y) {
this.x = x;
this.y = y;
}
/** @hide
* copy the vector to float array
*
* @param data
* @param offset
*/
public void copyTo(float[] data, int offset) {
data[offset] = x;
data[offset + 1] = y;
}
}
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