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/**
* Copyright (c) 2008-2012 Ardor Labs, Inc.
*
* This file is part of Ardor3D.
*
* Ardor3D is free software: you can redistribute it and/or modify it
* under the terms of its license which may be found in the accompanying
* LICENSE file or at .
*/
package com.ardor3d.math;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import com.ardor3d.math.type.ReadOnlyVector4;
import com.ardor3d.util.export.InputCapsule;
import com.ardor3d.util.export.OutputCapsule;
import com.ardor3d.util.export.Savable;
/**
* Vector4 represents a point or vector in a four dimensional system. This implementation stores its data in
* double-precision.
*/
public class Vector4 implements Cloneable, Savable, Externalizable, ReadOnlyVector4, Poolable {
private static final long serialVersionUID = 1L;
private static final ObjectPool VEC_POOL = ObjectPool.create(Vector4.class, MathConstants.maxMathPoolSize);
/**
* 0, 0, 0, 0
*/
public final static ReadOnlyVector4 ZERO = new Vector4(0, 0, 0, 0);
/**
* 1, 1, 1, 1
*/
public final static ReadOnlyVector4 ONE = new Vector4(1, 1, 1, 1);
/**
* -1, -1, -1, -1
*/
public final static ReadOnlyVector4 NEG_ONE = new Vector4(-1, -1, -1, -1);
/**
* 1, 0, 0, 0
*/
public final static ReadOnlyVector4 UNIT_X = new Vector4(1, 0, 0, 0);
/**
* -1, 0, 0, 0
*/
public final static ReadOnlyVector4 NEG_UNIT_X = new Vector4(-1, 0, 0, 0);
/**
* 0, 1, 0, 0
*/
public final static ReadOnlyVector4 UNIT_Y = new Vector4(0, 1, 0, 0);
/**
* 0, -1, 0, 0
*/
public final static ReadOnlyVector4 NEG_UNIT_Y = new Vector4(0, -1, 0, 0);
/**
* 0, 0, 1, 0
*/
public final static ReadOnlyVector4 UNIT_Z = new Vector4(0, 0, 1, 0);
/**
* 0, 0, -1, 0
*/
public final static ReadOnlyVector4 NEG_UNIT_Z = new Vector4(0, 0, -1, 0);
/**
* 0, 0, 0, 1
*/
public final static ReadOnlyVector4 UNIT_W = new Vector4(0, 0, 0, 1);
/**
* 0, 0, 0, -1
*/
public final static ReadOnlyVector4 NEG_UNIT_W = new Vector4(0, 0, 0, -1);
protected double _x = 0;
protected double _y = 0;
protected double _z = 0;
protected double _w = 0;
/**
* Constructs a new vector set to (0, 0, 0, 0).
*/
public Vector4() {
this(0, 0, 0, 0);
}
/**
* Constructs a new vector set to the (x, y, z, w) values of the given source vector.
*
* @param src
*/
public Vector4(final ReadOnlyVector4 src) {
this(src.getX(), src.getY(), src.getZ(), src.getW());
}
/**
* Constructs a new vector set to (x, y, z, w).
*
* @param x
* @param y
* @param z
* @param w
*/
public Vector4(final double x, final double y, final double z, final double w) {
_x = x;
_y = y;
_z = z;
_w = w;
}
@Override
public double getX() {
return _x;
}
@Override
public double getY() {
return _y;
}
@Override
public double getZ() {
return _z;
}
@Override
public double getW() {
return _w;
}
/**
* @return x as a float, to decrease need for explicit casts.
*/
@Override
public float getXf() {
return (float) _x;
}
/**
* @return y as a float, to decrease need for explicit casts.
*/
@Override
public float getYf() {
return (float) _y;
}
/**
* @return z as a float, to decrease need for explicit casts.
*/
@Override
public float getZf() {
return (float) _z;
}
/**
* @return w as a float, to decrease need for explicit casts.
*/
@Override
public float getWf() {
return (float) _w;
}
/**
* @param index
* @return x value if index == 0, y value if index == 1, z value if index == 2 or w value if index == 3
* @throws IllegalArgumentException
* if index is not one of 0, 1, 2, 3.
*/
@Override
public double getValue(final int index) {
switch (index) {
case 0:
return getX();
case 1:
return getY();
case 2:
return getZ();
case 3:
return getW();
}
throw new IllegalArgumentException("index must be either 0, 1, 2 or 3");
}
/**
* @param index
* which field index in this vector to set.
* @param value
* to set to one of x, y, z or w.
* @throws IllegalArgumentException
* if index is not one of 0, 1, 2, 3.
*
* if this vector is read only
*/
public void setValue(final int index, final double value) {
switch (index) {
case 0:
setX(value);
return;
case 1:
setY(value);
return;
case 2:
setZ(value);
return;
case 3:
setW(value);
return;
}
throw new IllegalArgumentException("index must be either 0, 1, 2 or 3");
}
/**
* Stores the double values of this vector in the given double array.
*
* @param store
* if null, a new double[4] array is created.
* @return the double array
* @throws ArrayIndexOutOfBoundsException
* if store is not at least length 4.
*/
@Override
public double[] toArray(double[] store) {
if (store == null) {
store = new double[4];
}
// do last first to ensure size is correct before any edits occur.
store[3] = getW();
store[2] = getZ();
store[1] = getY();
store[0] = getX();
return store;
}
/**
* Sets the first component of this vector to the given double value.
*
* @param x
*/
public void setX(final double x) {
_x = x;
}
/**
* Sets the second component of this vector to the given double value.
*
* @param y
*/
public void setY(final double y) {
_y = y;
}
/**
* Sets the third component of this vector to the given double value.
*
* @param z
*/
public void setZ(final double z) {
_z = z;
}
/**
* Sets the fourth component of this vector to the given double value.
*
* @param w
*/
public void setW(final double w) {
_w = w;
}
/**
* Sets the value of this vector to (x, y, z, w)
*
* @param x
* @param y
* @param z
* @param w
* @return this vector for chaining
*/
public Vector4 set(final double x, final double y, final double z, final double w) {
setX(x);
setY(y);
setZ(z);
setW(w);
return this;
}
/**
* Sets the value of this vector to the (x, y, z, w) values of the provided source vector.
*
* @param source
* @return this vector for chaining
* @throws NullPointerException
* if source is null.
*/
public Vector4 set(final ReadOnlyVector4 source) {
setX(source.getX());
setY(source.getY());
setZ(source.getZ());
setW(source.getW());
return this;
}
/**
* Sets the value of this vector to (0, 0, 0, 0)
*
* @return this vector for chaining
*/
public Vector4 zero() {
return set(0, 0, 0, 0);
}
/**
* Adds the given values to those of this vector and returns them in store.
*
* @param x
* @param y
* @param z
* @param w
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return (this.x + x, this.y + y, this.z + z, this.w + w)
*/
@Override
public Vector4 add(final double x, final double y, final double z, final double w, final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
return result.set(getX() + x, getY() + y, getZ() + z, getW() + w);
}
/**
* Increments the values of this vector with the given x, y, z and w values.
*
* @param x
* @param y
* @param z
* @param w
* @return this vector for chaining
*/
public Vector4 addLocal(final double x, final double y, final double z, final double w) {
return set(getX() + x, getY() + y, getZ() + z, getW() + w);
}
/**
* Adds the values of the given source vector to those of this vector and returns them in store.
*
* @param source
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return (this.x + source.x, this.y + source.y, this.z + source.z, this.w + source.w)
* @throws NullPointerException
* if source is null.
*/
@Override
public Vector4 add(final ReadOnlyVector4 source, final Vector4 store) {
return add(source.getX(), source.getY(), source.getZ(), source.getW(), store);
}
/**
* Increments the values of this vector with the x, y, z and w values of the given vector.
*
* @param source
* @return this vector for chaining
* @throws NullPointerException
* if source is null.
*/
public Vector4 addLocal(final ReadOnlyVector4 source) {
return addLocal(source.getX(), source.getY(), source.getZ(), source.getW());
}
/**
* Subtracts the given values from those of this vector and returns them in store.
*
* @param x
* @param y
* @param z
* @param w
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return (this.x - x, this.y - y, this.z - z, this.w - w)
*/
@Override
public Vector4 subtract(final double x, final double y, final double z, final double w, final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
return result.set(getX() - x, getY() - y, getZ() - z, getW() - w);
}
/**
* Decrements the values of this vector by the given x, y, z and w values.
*
* @param x
* @param y
* @param z
* @param w
* @return this vector for chaining
*/
public Vector4 subtractLocal(final double x, final double y, final double z, final double w) {
return set(getX() - x, getY() - y, getZ() - z, getW() - w);
}
/**
* Subtracts the values of the given source vector from those of this vector and returns them in store.
*
* @param source
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return (this.x - source.x, this.y - source.y, this.z - source.z, this.w - source.w)
* @throws NullPointerException
* if source is null.
*/
@Override
public Vector4 subtract(final ReadOnlyVector4 source, final Vector4 store) {
return subtract(source.getX(), source.getY(), source.getZ(), source.getW(), store);
}
/**
* Decrements the values of this vector by the x, y, z and w values from the given source vector.
*
* @param source
* @return this vector for chaining
* @throws NullPointerException
* if source is null.
*/
public Vector4 subtractLocal(final ReadOnlyVector4 source) {
return subtractLocal(source.getX(), source.getY(), source.getZ(), source.getW());
}
/**
* Multiplies the values of this vector by the given scalar value and returns the result in store.
*
* @param scalar
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return a new vector (this.x * scalar, this.y * scalar, this.z * scalar, this.w * scalar)
*/
@Override
public Vector4 multiply(final double scalar, final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
return result.set(getX() * scalar, getY() * scalar, getZ() * scalar, getW() * scalar);
}
/**
* Internally modifies the values of this vector by multiplying them each by the given scalar value.
*
* @param scalar
* @return this vector for chaining
*/
public Vector4 multiplyLocal(final double scalar) {
return set(getX() * scalar, getY() * scalar, getZ() * scalar, getW() * scalar);
}
/**
* Multiplies the values of this vector by the given scalar value and returns the result in store.
*
* @param scale
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return a new vector (this.x * scale.x, this.y * scale.y, this.z * scale.z, this.w * scale.w)
*/
@Override
public Vector4 multiply(final ReadOnlyVector4 scale, final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
return result.set(getX() * scale.getX(), getY() * scale.getY(), getZ() * scale.getZ(), getW() * scale.getW());
}
/**
* Internally modifies the values of this vector by multiplying them each by the given scale values.
*
* @param scale
* @return this vector for chaining
*/
public Vector4 multiplyLocal(final ReadOnlyVector4 scale) {
return set(getX() * scale.getX(), getY() * scale.getY(), getZ() * scale.getZ(), getW() * scale.getW());
}
/**
* Multiplies the values of this vector by the given scalar value and returns the result in store.
*
* @param x
* @param y
* @param z
* @param w
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return a new vector (this.x * scale.x, this.y * scale.y, this.z * scale.z, this.w * scale.w)
*/
@Override
public Vector4 multiply(final double x, final double y, final double z, final double w, final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
return result.set(getX() * x, getY() * y, getZ() * z, getW() * w);
}
/**
* Internally modifies the values of this vector by multiplying them each by the given scale values.
*
* @param x
* @param y
* @param z
* @param w
* @return this vector for chaining
*/
public Vector4 multiplyLocal(final double x, final double y, final double z, final double w) {
return set(getX() * x, getY() * y, getZ() * z, getW() * w);
}
/**
* Divides the values of this vector by the given scalar value and returns the result in store.
*
* @param scalar
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return a new vector (this.x / scalar, this.y / scalar, this.z / scalar, this.w / scalar)
*/
@Override
public Vector4 divide(final double scalar, final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
return result.set(getX() / scalar, getY() / scalar, getZ() / scalar, getW() / scalar);
}
/**
* Internally modifies the values of this vector by dividing them each by the given scalar value.
*
* @param scalar
* @return this vector for chaining
*
*
* @throws ArithmeticException
* if scalar is 0
*/
public Vector4 divideLocal(final double scalar) {
final double invScalar = 1.0 / scalar;
return set(getX() * invScalar, getY() * invScalar, getZ() * invScalar, getW() * invScalar);
}
/**
* Divides the values of this vector by the given scale values and returns the result in store.
*
* @param scale
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return a new vector (this.x / scale.x, this.y / scale.y, this.z / scale.z, this.w / scale.w)
*/
@Override
public Vector4 divide(final ReadOnlyVector4 scale, final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
return result.set(getX() / scale.getX(), getY() / scale.getY(), getZ() / scale.getZ(), getW() / scale.getW());
}
/**
* Internally modifies the values of this vector by dividing them each by the given scale values.
*
* @param scale
* @return this vector for chaining
*/
public Vector4 divideLocal(final ReadOnlyVector4 scale) {
return set(getX() / scale.getX(), getY() / scale.getY(), getZ() / scale.getZ(), getW() / scale.getW());
}
/**
* Divides the values of this vector by the given scale values and returns the result in store.
*
* @param x
* @param y
* @param z
* @param w
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return a new vector (this.x / scale.x, this.y / scale.y, this.z / scale.z, this.w / scale.w)
*/
@Override
public Vector4 divide(final double x, final double y, final double z, final double w, final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
return result.set(getX() / x, getY() / y, getZ() / z, getW() / w);
}
/**
* Internally modifies the values of this vector by dividing them each by the given scale values.
*
* @param x
* @param y
* @param z
* @param w
* @return this vector for chaining
*/
public Vector4 divideLocal(final double x, final double y, final double z, final double w) {
return set(getX() / x, getY() / y, getZ() / z, getW() / w);
}
/**
*
* Internally modifies this vector by multiplying its values with a given scale value, then adding a given "add"
* value.
*
* @param scale
* the value to multiply this vector by.
* @param add
* the value to add to the result
* @return this vector for chaining
*/
public Vector4 scaleAddLocal(final double scale, final Vector4 add) {
_x = _x * scale + add.getX();
_y = _y * scale + add.getY();
_z = _z * scale + add.getZ();
_w = _w * scale + add.getW();
return this;
}
/**
* Scales this vector by multiplying its values with a given scale value, then adding a given "add" value. The
* result is store in the given store parameter.
*
* @param scale
* the value to multiply by.
* @param add
* the value to add
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return the store variable
*/
@Override
public Vector4 scaleAdd(final double scale, final ReadOnlyVector4 add, final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
result.setX(_x * scale + add.getX());
result.setY(_y * scale + add.getY());
result.setZ(_z * scale + add.getZ());
result.setW(_w * scale + add.getW());
return result;
}
/**
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return same as multiply(-1, store)
*/
@Override
public Vector4 negate(final Vector4 store) {
return multiply(-1, store);
}
/**
* @return same as multiplyLocal(-1)
*/
public Vector4 negateLocal() {
return multiplyLocal(-1);
}
/**
* Creates a new unit length vector from this one by dividing by length. If the length is 0, (ie, if the vector is
* 0, 0, 0, 0) then a new vector (0, 0, 0, 0) is returned.
*
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return a new unit vector (or 0, 0, 0, 0 if this unit is 0 length)
*/
@Override
public Vector4 normalize(final Vector4 store) {
final double lengthSq = lengthSquared();
if (Math.abs(lengthSq) > MathUtils.EPSILON) {
return multiply(MathUtils.inverseSqrt(lengthSq), store);
}
return store != null ? store.set(Vector4.ZERO) : new Vector4(Vector4.ZERO);
}
/**
* Converts this vector into a unit vector by dividing it internally by its length. If the length is 0, (ie, if the
* vector is 0, 0, 0, 0) then no action is taken.
*
* @return this vector for chaining
*/
public Vector4 normalizeLocal() {
final double lengthSq = lengthSquared();
if (Math.abs(lengthSq) > MathUtils.EPSILON) {
return multiplyLocal(MathUtils.inverseSqrt(lengthSq));
}
return this;
}
/**
* Performs a linear interpolation between this vector and the given end vector, using the given scalar as a
* percent. iow, if changeAmnt is closer to 0, the result will be closer to the current value of this vector and if
* it is closer to 1, the result will be closer to the end value. The result is returned as a new vector object.
*
* @param endVec
* @param scalar
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return a new vector as described above.
* @throws NullPointerException
* if endVec is null.
*/
@Override
public Vector4 lerp(final ReadOnlyVector4 endVec, final double scalar, final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
final double x = (1.0 - scalar) * getX() + scalar * endVec.getX();
final double y = (1.0 - scalar) * getY() + scalar * endVec.getY();
final double z = (1.0 - scalar) * getZ() + scalar * endVec.getZ();
final double w = (1.0 - scalar) * getW() + scalar * endVec.getW();
return result.set(x, y, z, w);
}
/**
* Performs a linear interpolation between this vector and the given end vector, using the given scalar as a
* percent. iow, if changeAmnt is closer to 0, the result will be closer to the current value of this vector and if
* it is closer to 1, the result will be closer to the end value. The result is stored back in this vector.
*
* @param endVec
* @param scalar
* @return this vector for chaining
*
*
* @throws NullPointerException
* if endVec is null.
*/
public Vector4 lerpLocal(final ReadOnlyVector4 endVec, final double scalar) {
setX((1.0 - scalar) * getX() + scalar * endVec.getX());
setY((1.0 - scalar) * getY() + scalar * endVec.getY());
setZ((1.0 - scalar) * getZ() + scalar * endVec.getZ());
setW((1.0 - scalar) * getW() + scalar * endVec.getW());
return this;
}
/**
* Performs a linear interpolation between the given begin and end vectors, using the given scalar as a percent.
* iow, if changeAmnt is closer to 0, the result will be closer to the begin value and if it is closer to 1, the
* result will be closer to the end value. The result is returned as a new vector object.
*
* @param beginVec
* @param endVec
* @param scalar
* the scalar as a percent.
* @param store
* the vector to store the result in for return. If null, a new vector object is created and returned.
* @return a new vector as described above.
* @throws NullPointerException
* if beginVec or endVec are null.
*/
public static Vector4 lerp(final ReadOnlyVector4 beginVec, final ReadOnlyVector4 endVec, final double scalar,
final Vector4 store) {
Vector4 result = store;
if (result == null) {
result = new Vector4();
}
final double x = (1.0 - scalar) * beginVec.getX() + scalar * endVec.getX();
final double y = (1.0 - scalar) * beginVec.getY() + scalar * endVec.getY();
final double z = (1.0 - scalar) * beginVec.getZ() + scalar * endVec.getZ();
final double w = (1.0 - scalar) * beginVec.getW() + scalar * endVec.getW();
return result.set(x, y, z, w);
}
/**
* Performs a linear interpolation between the given begin and end vectors, using the given scalar as a percent.
* iow, if changeAmnt is closer to 0, the result will be closer to the begin value and if it is closer to 1, the
* result will be closer to the end value. The result is stored back in this vector.
*
* @param beginVec
* @param endVec
* @param changeAmnt
* the scalar as a percent.
* @return this vector for chaining
*
*
* @throws NullPointerException
* if beginVec or endVec are null.
*/
public Vector4 lerpLocal(final ReadOnlyVector4 beginVec, final ReadOnlyVector4 endVec, final double scalar) {
setX((1.0 - scalar) * beginVec.getX() + scalar * endVec.getX());
setY((1.0 - scalar) * beginVec.getY() + scalar * endVec.getY());
setZ((1.0 - scalar) * beginVec.getZ() + scalar * endVec.getZ());
setW((1.0 - scalar) * beginVec.getW() + scalar * endVec.getW());
return this;
}
/**
* @return the magnitude or distance between the origin (0, 0, 0, 0) and the point described by this vector (x, y,
* z, w). Effectively the square root of the value returned by {@link #lengthSquared()}.
*/
@Override
public double length() {
return MathUtils.sqrt(lengthSquared());
}
/**
* @return the squared magnitude or squared distance between the origin (0, 0, 0, 0) and the point described by this
* vector (x, y, z, w)
*/
@Override
public double lengthSquared() {
return getX() * getX() + getY() * getY() + getZ() * getZ() + getW() * getW();
}
/**
* @param x
* @param y
* @param z
* @param w
* @return the squared distance between the point described by this vector and the given x, y, z, w point. When
* comparing the relative distance between two points it is usually sufficient to compare the squared
* distances, thus avoiding an expensive square root operation.
*/
@Override
public double distanceSquared(final double x, final double y, final double z, final double w) {
final double dx = getX() - x;
final double dy = getY() - y;
final double dz = getZ() - z;
final double dw = getW() - w;
return dx * dx + dy * dy + dz * dz + dw * dw;
}
/**
* @param destination
* @return the squared distance between the point described by this vector and the given destination point. When
* comparing the relative distance between two points it is usually sufficient to compare the squared
* distances, thus avoiding an expensive square root operation.
* @throws NullPointerException
* if destination is null.
*/
@Override
public double distanceSquared(final ReadOnlyVector4 destination) {
return distanceSquared(destination.getX(), destination.getY(), destination.getZ(), destination.getW());
}
/**
* @param x
* @param y
* @param z
* @param w
* @return the distance between the point described by this vector and the given x, y, z, w point.
*/
@Override
public double distance(final double x, final double y, final double z, final double w) {
return MathUtils.sqrt(distanceSquared(x, y, z, w));
}
/**
* @param destination
* @return the distance between the point described by this vector and the given destination point.
* @throws NullPointerException
* if destination is null.
*/
@Override
public double distance(final ReadOnlyVector4 destination) {
return MathUtils.sqrt(distanceSquared(destination));
}
/**
* @param x
* @param y
* @param z
* @param w
* @return the dot product of this vector with the given x, y, z, w values.
*/
@Override
public double dot(final double x, final double y, final double z, final double w) {
return getX() * x + getY() * y + getZ() * z + getW() * w;
}
/**
* @param vec
* @return the dot product of this vector with the x, y, z, w values of the given vector.
* @throws NullPointerException
* if vec is null.
*/
@Override
public double dot(final ReadOnlyVector4 vec) {
return dot(vec.getX(), vec.getY(), vec.getZ(), vec.getW());
}
/**
* Check a vector... if it is null or its doubles are NaN or infinite, return false. Else return true.
*
* @param vector
* the vector to check
* @return true or false as stated above.
*/
public static boolean isValid(final ReadOnlyVector4 vector) {
if (vector == null) {
return false;
}
if (Double.isNaN(vector.getX()) || Double.isNaN(vector.getY()) || Double.isNaN(vector.getZ())
|| Double.isNaN(vector.getW())) {
return false;
}
if (Double.isInfinite(vector.getX()) || Double.isInfinite(vector.getY()) || Double.isInfinite(vector.getZ())
|| Double.isInfinite(vector.getW())) {
return false;
}
return true;
}
/**
* @return the string representation of this vector.
*/
@Override
public String toString() {
return "com.ardor3d.math.Vector4 [X=" + getX() + ", Y=" + getY() + ", Z=" + getZ() + ", W=" + getW() + "]";
}
/**
* @return returns a unique code for this vector object based on its values. If two vectors are numerically equal,
* they will return the same hash code value.
*/
@Override
public int hashCode() {
int result = 17;
final long x = Double.doubleToLongBits(getX());
result += 31 * result + (int) (x ^ x >>> 32);
final long y = Double.doubleToLongBits(getY());
result += 31 * result + (int) (y ^ y >>> 32);
final long z = Double.doubleToLongBits(getZ());
result += 31 * result + (int) (z ^ z >>> 32);
final long w = Double.doubleToLongBits(getW());
result += 31 * result + (int) (w ^ w >>> 32);
return result;
}
/**
* @param o
* the object to compare for equality
* @return true if this vector and the provided vector have the same x, y, z and w values.
*/
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (!(o instanceof ReadOnlyVector4)) {
return false;
}
final ReadOnlyVector4 comp = (ReadOnlyVector4) o;
return getX() == comp.getX() && getY() == comp.getY() && getZ() == comp.getZ() && getW() == comp.getW();
}
// /////////////////
// Method for Cloneable
// /////////////////
@Override
public Vector4 clone() {
return new Vector4(this);
}
// /////////////////
// Methods for Savable
// /////////////////
@Override
public Class getClassTag() {
return this.getClass();
}
@Override
public void write(final OutputCapsule capsule) throws IOException {
capsule.write(getX(), "x", 0);
capsule.write(getY(), "y", 0);
capsule.write(getZ(), "z", 0);
capsule.write(getW(), "w", 0);
}
@Override
public void read(final InputCapsule capsule) throws IOException {
setX(capsule.readDouble("x", 0));
setY(capsule.readDouble("y", 0));
setZ(capsule.readDouble("z", 0));
setW(capsule.readDouble("w", 0));
}
// /////////////////
// Methods for Externalizable
// /////////////////
/**
* Used with serialization. Not to be called manually.
*
* @param in
* ObjectInput
* @throws IOException
* @throws ClassNotFoundException
*/
@Override
public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
setX(in.readDouble());
setY(in.readDouble());
setZ(in.readDouble());
setW(in.readDouble());
}
/**
* Used with serialization. Not to be called manually.
*
* @param out
* ObjectOutput
* @throws IOException
*/
@Override
public void writeExternal(final ObjectOutput out) throws IOException {
out.writeDouble(getX());
out.writeDouble(getY());
out.writeDouble(getZ());
out.writeDouble(getW());
}
// /////////////////
// Methods for creating temp variables (pooling)
// /////////////////
/**
* @return An instance of Vector4 that is intended for temporary use in calculations and so forth. Multiple calls to
* the method should return instances of this class that are not currently in use.
*/
public final static Vector4 fetchTempInstance() {
if (MathConstants.useMathPools) {
return Vector4.VEC_POOL.fetch();
} else {
return new Vector4();
}
}
/**
* Releases a Vector4 back to be used by a future call to fetchTempInstance. TAKE CARE: this Vector4 object should
* no longer have other classes referencing it or "Bad Things" will happen.
*
* @param vec
* the Vector4 to release.
*/
public final static void releaseTempInstance(final Vector4 vec) {
if (MathConstants.useMathPools) {
Vector4.VEC_POOL.release(vec);
}
}
}