Examples of org.jamesii.core.math.MathVector

org.jamesii.core.math.MathVector
MathVector Description: Class containing an implementation of a mathematical vector together with the basic vector manipulation methods. @author Stefan Leye


  /**
   * Test constructor.
   */
  public void testConstructor() {
    MathVector v = new MathVector(0);
    assertEquals(0, v.getColumns());
    assertEquals(0, v.size());
    assertEquals(1, v.getRows());
    v = new MathVector(1);
    assertEquals(1, v.getColumns());
    assertEquals(1, v.size());
    assertEquals(1, v.getRows());
    assertEquals(0.0, v.getElement(0));
    v = new MathVector(2);
    assertEquals(2, v.getColumns());
    assertEquals(2, v.size());
    assertEquals(1, v.getRows());
    assertEquals(0.0, v.getElement(0));
    assertEquals(0.0, v.getElement(1));
    v = new MathVector(3);
    assertEquals(3, v.getColumns());
    assertEquals(3, v.size());
    assertEquals(1, v.getRows());
    assertEquals(0.0, v.getElement(0));
    assertEquals(0.0, v.getElement(1));
    assertEquals(0.0, v.getElement(2));
  }

View Full Code Here

  /**
   * Test constructor exceptions.
   */
  public void testConstructorExceptions() {
    try {
      new MathVector(-1);
      fail();
    } catch (NegativeArraySizeException e) {
      assertTrue(true);
    } catch (Exception e) {
      fail();

View Full Code Here


  /**
   * Test set element.
   */
  public void testSetElement() {
    MathVector v = new MathVector(2);


    v.setElement(0, 42.42);
    assertEquals(42.42, v.getElement(0));
    assertEquals(0.0, v.getElement(1));
    v.setElement(1, 23.23);
    assertEquals(42.42, v.getElement(0));
    assertEquals(23.23, v.getElement(1));
  }

View Full Code Here


  /**
   * Test set element exceptions.
   */
  public void testSetElementExceptions() {
    MathVector v = new MathVector(2);


    try {
      v.setElement(3, 1.2);
      fail();
    } catch (ArrayIndexOutOfBoundsException e) {
      assertTrue(true);
    } catch (Exception e) {
      fail();

View Full Code Here


  /**
   * Test copy.
   */
  public void testCopy() {
    MathVector v1 = new MathVector(3);


    v1.setElement(0, 1.2);
    v1.setElement(1, 3.4);
    v1.setElement(1, 6.7);


    MathVector v2 = v1.copy();


    assertNotNull(v1);
    assertNotNull(v2);
    // copy() should return a copy, not the same object
    assertFalse(v1 == v2);


    assertEquals(v1.getElement(0), v2.getElement(0));
    assertEquals(v1.getElement(1), v2.getElement(1));
    assertEquals(v1.getElement(2), v2.getElement(2));
  }

View Full Code Here


  /**
   * Test mult with scalar.
   */
  public void testMultWithScalar() {
    MathVector v = new MathVector(2);


    v.setElement(0, 1.2);
    v.setElement(1, 3.4);


    assertEquals(1.2, v.getElement(0));
    assertEquals(3.4, v.getElement(1));


    v.multWithScalar(5);


    assertEquals(6.0, v.getElement(0));
    assertEquals(17.0, v.getElement(1));
  }

View Full Code Here


  /**
   * Test scalar product.
   */
  public void testScalarProduct() {
    MathVector v1 = new MathVector(2), v2 = new MathVector(2);
    v1.setElement(0, 1.25);
    v1.setElement(1, 3.75);
    v2.setElement(0, 8.25);
    v2.setElement(1, -4.5);
    assertEquals(-105d / 16, v1.scalarProduct(v2));
  }

View Full Code Here

  /**
   * Test scalar product exceptions.
   */
  public void testScalarProductExceptions() {
    try {
      new MathVector(2).scalarProduct(new MathVector(3));
      fail();
    } catch (MatrixException e) {
      assertTrue(true);
    } catch (Exception e) {
      fail();

View Full Code Here


  /**
   * Test vector product.
   */
  public void testVectorProduct() {
    MathVector v1 = new MathVector(3), v2 = new MathVector(3);
    v1.setElement(0, 1);
    v1.setElement(1, 2);
    v1.setElement(2, 4);
    v2.setElement(0, -8);
    v2.setElement(1, 5);
    v2.setElement(2, 1.5);


    MathVector v3 = v1.vectorProduct(v2);


    assertEquals(-17.0, v3.getElement(0));
    assertEquals(-33.5, v3.getElement(1));
    assertEquals(21.0, v3.getElement(2));
  }

View Full Code Here

  /**
   * Test vector product exceptions.
   */
  public void testVectorProductExceptions() {
    try {
      new MathVector(2).vectorProduct(new MathVector(3));
      fail();
    } catch (MatrixException e) {
      assertTrue(true);
    } catch (Exception e) {
      fail();
    }


    // The cross product is only defined in 3 and 7 dimensions. Thus 2 and 4
    // dimensions must yield an error!


    try {
      new MathVector(2).vectorProduct(new MathVector(2));
      assertTrue(
          "The cross-product isn't really defined in two-dimensional space. ",
          false);
    } catch (MatrixException e) {
      assertTrue(true);
    } catch (Exception e) {
      fail();
    }


    try {
      new MathVector(4).vectorProduct(new MathVector(4));
      assertTrue("The cross-product isn't really defined for dimensions other"
          + "than three and seven.", false);
    } catch (MatrixException e) {
      assertTrue(true);
    } catch (Exception e) {

View Full Code Here

TOP

Related Classes of org.jamesii.core.math.MathVector

org.jamesii.core.math.TestMathVector

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.