Class DrawableShape

src/org/opensourcephysics/display/DrawableShape.java:21–218

A class that draws shapes using the Java 2D API.

 * A class that draws shapes using the Java 2D API.
 */
public class DrawableShape implements Drawable {
  // no harm in letting a client access the color
  public Color color = new Color(255, 128, 128, 128); // transparent light red fill color
  public Color edgeColor = Color.RED;
  Shape shape;
  double x, y;                                        // the shape's coordinates
  double theta;
  public String shapeClass;

  /**
   * Constructs a DrawableShape with the given coordinates.
   *
   * @param shape
   * @param x coordinate
   * @param y coordinate
   */
  public DrawableShape(Shape shape, double x, double y) {
    this.x = x;
    this.y = y;
    shapeClass = shape.getClass().getName();
    trDS.setToTranslation(x, y);
    this.shape = trDS.createTransformedShape(shape);
  }

  /**
   * Creates a drawable circle.
   * @param x
   * @param y
   * @param d the diameter
   * @return the DrawableShape
   */
  public static DrawableShape createCircle(double x, double y, double d) {
    return new DrawableShape(new Ellipse2D.Double(-d/2, -d/2, d, d), x, y);
  }

  /**
   * Creates a drawable rectangle.
   * @param x
   * @param y
   * @param w
   * @param h
   * @return the drawable rectangle
   */
  public static DrawableShape createRectangle(double x, double y, double w, double h) {
    return new DrawableShape(new Rectangle2D.Double(-w/2, -h/2, w, h), x, y);
  }

  /**
   * Sets the shape's drawing colors.
   *
   * The error bar color is set equal to the edge color.
   *
   * @param  fillColor
   * @param  edgeColor
   */
  public void setMarkerColor(Color fillColor, Color edgeColor) {
    this.color = fillColor;
    this.edgeColor = edgeColor;