Section 14.4 Shape Position and Size
Subsection 14.4.1 Position- and Size-related Methods
Shape implements a number of mutator and accessor methods that may be used to modify its location and size, as well as to interrogate its current location and size. In all cases the methods can be thought of a modifying the Shape’s bounding box. The Shape itself is modified to fill the new bounding box. The manner in which the Shape’s defining coordinates change depend upon the Shape.
One additional Shape method to note is move(double dx, double dy). This is a convenience method that moves the location of a Shape by dx in the x-direction and by dy in the y-direction. It is useful when you have the amount by which a Shape should move relative to its current location rather than the new absolute position of a Shape.
The following Shape methods permit a Shape’s bounding box to be modified. These methods may be used on all Shape subclasses.
| Method | Description |
|---|---|
| public double getHeight() 1 | Return the Shape’s height. |
| public void setHeight(double height) 2 | Set the height of the Shape. |
| public double getWidth() 3 | Return the Shape’s width. |
| public void setWidth(double width) 4 | Set the width of the Shape. |
| public Dimension getSize() 5 | Return the Shape’s height and width as a Dimension object. |
| public void setSize(double width, double height) 6 | Set both the width and height of the Shape. |
| public Point getLocation() 7 | Return the location of the upper left corner of the Shape’s bounding box as a Point object. |
| public void setLocation(double x, double y) 8 | Set the coordinates of the upper left corner of the Shape’s bounding box. |
| public double getX() 9 | Return the x-location of the upper left corner of the Shape’s bounding box. |
| public void setX(double x) 10 | Set the x-coordinate of the upper left corner of the Shape’s bounding box. |
| public double getY() 11 | Return the y-coordinate of the upper left corner of the Shape’s bounding box. |
| public void setY(double y) 12 | Set the y-coordinate of the upper left corner of the Shape’s bounding box. |
| public Point getCenter() 13 | Return the coordinates of the Shape’s bounding box center. |
| public void setCenter(double cx, double cy) 14 | Move the Shape so that its bounding box has specified center coordinates. |
| public void move(double dx, double dy) 15 | Move a Shape by the distance (dx, dy). |
doodlepad.org/dist/javadoc/doodlepad/Shape.html#getHeight--doodlepad.org/dist/javadoc/doodlepad/Shape.html#setHeight-double-doodlepad.org/dist/javadoc/doodlepad/Shape.html#getWidth--doodlepad.org/dist/javadoc/doodlepad/Shape.html#setWidth-double-doodlepad.org/dist/javadoc/doodlepad/Shape.html#getSize--doodlepad.org/dist/javadoc/doodlepad/Shape.html#setSize-double-double-doodlepad.org/dist/javadoc/doodlepad/Shape.html#getLocation--doodlepad.org/dist/javadoc/doodlepad/Shape.html#setLocation-double-double-doodlepad.org/dist/javadoc/doodlepad/Shape.html#getX--doodlepad.org/dist/javadoc/doodlepad/Shape.html#setX-double-doodlepad.org/dist/javadoc/doodlepad/Shape.html#getY--doodlepad.org/dist/javadoc/doodlepad/Shape.html#setY-double-doodlepad.org/dist/javadoc/doodlepad/Shape.html#getCenter--doodlepad.org/dist/javadoc/doodlepad/Shape.html#setCenter-double-double-doodlepad.org/dist/javadoc/doodlepad/Shape.html#move-double-double-
