/**
* @expectedException InvalidArgumentException
*/
public function testSetInvalidElement()
{
// Arrange
$vector = new Vector3(0, 0, 0);
// Act
$vector->setElement(123, 0);
// Assert
// ...
}
/**
* Calculates the cross product between this vector and the given vector.
*
* @param Vector3 $vector The vector to calculate with.
* @return Vector3
*/
public function crossProduct(Vector3 $vector)
{
$x = BigNumberUtils::multiply($this->getY(), $vector->getZ());
$x->subtract(BigNumberUtils::multiply($this->getZ(), $vector->getY()));
$y = BigNumberUtils::multiply($this->getZ(), $vector->getX());
$y->subtract(BigNumberUtils::multiply($this->getX(), $vector->getZ()));
$z = BigNumberUtils::multiply($this->getX(), $vector->getY());
$z->subtract(BigNumberUtils::multiply($this->getY(), $vector->getX()));
return new Vector3($x, $y, $z);
}
