/**
* 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;
}
/**
* 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;
}
/**
* 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());
}
/**
* 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);
}
/**
* 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 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();
}
/**
* 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;
}
/**
* @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());
}
/**
* @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());
}
/**
* 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());
}
/**
* 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());
}
/**
* 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());
}
/**
* 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());
}
/**
* 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);
}
/**
* 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());
}
/**
* 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);
}
