/*******************************************************************************
 * Copyright (c) 2000, 2008 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 * Port to the D programming language:
 *     Frank Benoit <benoit@tionex.de>
 *******************************************************************************/
module dwtx.draw2d.geometry.Rectangle;

import dwt.dwthelper.utils;

import dwtx.draw2d.geometry.Translatable;
import dwtx.draw2d.geometry.Point;
import dwtx.draw2d.geometry.Dimension;
import dwtx.draw2d.geometry.Insets;
import dwtx.draw2d.PositionConstants;
import tango.text.convert.Format;

static import dwt.graphics.Rectangle;

/**
 * Represents a Rectangle(x, y, width, height). This class provides various methods
 * for manipulating this Rectangle or creating new derived geometrical Objects.
 */
public class Rectangle
    : Cloneable, /+java.io.Serializable, +/Translatable
{
/** the X value */
public int x;
/** the Y value */
public int y;
/** the width*/
public int width;
/** the height */
public int height;

/**A singleton for use in short calculations.  Use to avoid newing unnecessary objects.*/
public static const Rectangle SINGLETON;

static this(){
    SINGLETON = new Rectangle();
}

static final long serialVersionUID = 1;

/**
 * Constructs a Rectangle at the origin with zero width and height.
 *
 * @since 2.0
 */
public this() { }

/**
 * Constructs a Rectangle given a location and size.
 *
 * @param p  the location
 * @param size the size
 * @since 2.0
 */
public this(Point p, Dimension size) {
    this(p.x, p.y, size.width, size.height);
}

/**
 * Constructs a copy of the provided Rectangle.
 *
 * @param rect Rectangle supplying the initial values
 * @since 2.0
 */
public this(Rectangle rect) {
    this(rect.x, rect.y, rect.width, rect.height);
}

/**
 * Constructs a copy of the provided DWT {@link dwt.graphics.Rectangle}.
 *
 * @param rect The DWT Rectangle being copied
 * @since 2.0
 */
public this(dwt.graphics.Rectangle.Rectangle rect) {
    this(rect.x, rect.y, rect.width, rect.height);
}

/**
 * Constructs a Rectangle with the provided values.
 *
 * @param x  X location
 * @param y  Y location
 * @param width  Width of the rectangle
 * @param height Height of the rectangle
 * @since 2.0
 */
public this(int x, int y, int width, int height) {
    this.x = x;
    this.y = y;
    this.width = width;
    this.height = height;
}

/**
 * Constructs the smallest Rectangle that contains the specified Points.
 *
 * @param p1  Upper left hand corner
 * @param p2  Lower right hand corner
 * @since 2.0
 */
public this(Point p1, Point p2) {
    this.x = Math.min(p1.x, p2.x);
    this.y = Math.min(p1.y, p2.y);
    this.width = Math.abs(p2.x - p1.x) + 1;
    this.height = Math.abs(p2.y - p1.y) + 1;
}

/**
 * Returns the y-coordinate of the bottom of this Rectangle.
 *
 * @return  The Y coordinate of the bottom
 * @since 2.0
 */
public int bottom() {
    return y + height;
}

/**
 * Returns whether the given point is within the boundaries of this Rectangle.
 * The boundaries are inclusive of the top and left edges, but exclusive of the
 * bottom and right edges.
 *
 * @param pt  Point being tested for containment
 * @return true if the Point is within this Rectangle
 * @since 2.0
 */
public bool contains(Point pt) {
    return contains(pt.x, pt.y);
}

/**
 * Returns <code>true</code> if the given rectangle is contained within the
 * boundaries of this Rectangle.
 *
 * @param rect the Rectangle to test
 * @return true if the Rectangle is within this Rectangle
 */
public bool contains(Rectangle rect) {
    return x <= rect.x
      && y <= rect.y
      && right() >= rect.right()
      && bottom() >= rect.bottom();
}

/**
 * Returns whether the given coordinates are within the boundaries of this
 * Rectangle.  The boundaries are inclusive of the top and left edges, but
 * exclusive of the bottom and right edges.
 *
 * @param x X value
 * @param y Y value
 * @return true if the coordinates are within this Rectangle
 * @since 2.0
 */
public bool contains(int x, int y) {
    return y >= this.y
        && y < this.y + this.height
        && x >= this.x
        && x < this.x + this.width;
}

/**
 * Crops this rectangle by the amount specified in <code>insets</code>.
 *
 * @param insets  Insets to be removed from the Rectangle
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle crop(Insets insets) {
    if (insets is null)
        return this;
    x += insets.left;
    y += insets.top;
    width -= (insets.getWidth());
    height -= (insets.getHeight());
    return this;
}

/**
 * Returns whether the input object is equal to this Rectangle or not.
 * Rectangles are equivalent if their x, y, height, and width values are the
 * same.
 *
 * @param o  Object being tested for equality
 * @return  Returns the result of the equality test
 * @since 2.0
 */
public override int opEquals(Object o) {
    if (this is o) return true;
    if (auto r = cast(Rectangle)o ) {
        return (x is r.x)
            && (y  is r.y)
            && (width  is r.width)
            && (height is r.height);
    }
    return false;
}

/**
 * Expands the horizontal and vertical sides of this Rectangle with the values
 * provided as input, and returns this for convenience. The location of its
 * center is kept constant.
 *
 * @param h  Horizontal increment
 * @param v  Vertical increment
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle expand(int h, int v) {
    return shrink(-h, -v);
}

/**
 * Expands the horizontal and vertical sides of this Rectangle by the width and
 * height of the given Insets, and returns this for convenience.
 *
 * @param insets contains the amounts to expand on each side
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle expand(Insets insets) {
    x -= insets.left;
    y -= insets.top;
    height += insets.getHeight();
    width  += insets.getWidth();
    return this;
}

/**
 * Returns a new Point representing the middle point of the bottom side of this
 * Rectangle.
 *
 * @return  Point at the bottom of the Rectangle
 * @since 2.0
 */
public Point getBottom() {
    return new Point(x + width / 2, bottom());
}

/**
 * Returns a new Point representing the bottom left point of this Rectangle.
 *
 * @return  Point at the bottom left of the rectangle
 * @since 2.0
 */
public Point getBottomLeft() {
    return new Point(x, y + height);
}

/**
 * Returns a new Point representing the bottom right point of this Rectangle.
 *
 * @return  Point at the bottom right of the rectangle
 * @since 2.0
 */
public Point getBottomRight() {
    return new Point(x + width, y + height);
}

/**
 * Returns a new point representing the center of this Rectangle.
 *
 * @return  Point at the center of the rectangle
 */
public Point getCenter() {
    return new Point(x + width / 2, y + height / 2);
}

/**
 * Returns a new Rectangle which has the exact same parameters as this
 * Rectangle.
 *
 * @return  Copy of this Rectangle
 * @since 2.0
 */
public Rectangle getCopy() {
//     try {
//         return cast(Rectangle)clone();
//     } catch (CloneNotSupportedException exc) {
        return new Rectangle(this);
//     }
}

/**
 * Returns a new Rectangle with the specified insets cropped.
 *
 * @param insets  Insets being cropped from the Rectangle
 * @return  Cropped new Rectangle
 */
public Rectangle getCropped(Insets insets) {
    Rectangle r = new Rectangle(this);
    r.crop(insets);
    return r;
}

/**
 * Returns a new incremented Rectangle, where the sides are expanded by the
 * horizonatal and vertical values provided. The center of the Rectangle is
 * maintained constant.
 *
 * @param h  Horizontal increment
 * @param v  Vertical inrement
 * @return  A new expanded Rectangle
 * @since 2.0
 */
public Rectangle getExpanded(int h, int v) {
    return (new Rectangle(this)).expand(h, v);
}

/**
 * Creates and returns a new Rectangle with the bounds of <code>this</code>
 * Rectangle, expanded by the given Insets.
 *
 * @param insets The insets used to expand this rectangle
 * @return A new expanded Rectangle
 * @since 2.0
 */
public Rectangle getExpanded(Insets insets) {
    return (new Rectangle(this)).expand(insets);
}


/**
 * Returns a new Rectangle which has the intersection of this Rectangle and the
 * rectangle provided as input. Returns an empty Rectangle if there is no
 * interection.
 *
 * @param rect  Rectangle provided to test for intersection
 * @return  A new Rectangle representing the intersection
 * @since 2.0
 */
public Rectangle getIntersection(Rectangle rect) {
    int x1 = Math.max(x, rect.x);
    int x2 = Math.min(x + width, rect.x + rect.width);
    int y1 = Math.max(y, rect.y);
    int y2 = Math.min(y + height, rect.y + rect.height);
    if (((x2 - x1) < 0) || ((y2 - y1) < 0))
        return new Rectangle(0, 0, 0, 0);  // No intersection
    else
        return new Rectangle(x1, y1, x2 - x1, y2 - y1);
}

/**
 * Returns a new Point representing the middle point of the left hand side of
 * this Rectangle.
 *
 * @return  Point at the left of the Rectangle
 */
public Point getLeft() {
    return new Point(x, y + height / 2);
}

/**
 * Returns the upper left hand corner of the rectangle.
 *
 * @return  Location of the rectangle
 * @see  #setLocation(Point)
 */
public Point getLocation() {
    return new Point(x, y);
}

/**
 * <P>Returns an integer which represents the position of the given point with  respect to
 * this rectangle. Possible return values are bitwise ORs of the constants WEST, EAST,
 * NORTH, and SOUTH as found in {@link dwtx.draw2d.PositionConstants}.
 *
 * <P>Returns PositionConstant.NONE if the given point is inside this Rectangle.
 *
 * @param   pt  The Point whose position has to be determined
 * @return  An <code>int</code> which is a PositionConstant
 * @see dwtx.draw2d.PositionConstants
 * @since 2.0
 */
public int getPosition(Point pt) {
    int result = PositionConstants.NONE;

    if (contains(pt))
        return result;

    if (pt.x < x)
        result = PositionConstants.WEST;
    else if (pt.x >= (x + width))
        result = PositionConstants.EAST;

    if (pt.y < y)
        result = result | PositionConstants.NORTH;
    else if (pt.y >= (y + height))
        result = result | PositionConstants.SOUTH;

    return result;
}

/**
 * Returns a new Rectangle which is equivalent to this Rectangle with its
 * dimensions modified by the passed width <i>w</i> and height <i>h</i>.

 * @param w  Amount by which width is to be resized
 * @param h  Amount by which height is to be resized
 * @return a new rectangle with its width and height modified
 */
public Rectangle getResized(int w, int h) {
    return (new Rectangle(this)).resize(w, h);
}

/**
 * Returns a new Rectangle which is equivalent to this Rectangle with its
 * dimensions modified by the passed Dimension <i>d</i>.
 *
 * @param d  Dimensions by which the rectangle's size should be modified
 * @return   The new rectangle with the modified dimensions
 * @since 2.0
 */
public Rectangle getResized(Dimension d) {
    return (new Rectangle(this)).resize(d);
}

/**
 * Returns a new Point which represents the middle point of the right hand side
 * of this Rectangle.
 *
 * @return  Point at the right of the Rectangle
 * @since 2.0
 */
public Point getRight() {
    return new Point(right(), y + height / 2);
}

/**
 * Retuns the dimensions of this Rectangle.
 *
 * @return  Size of this Rectangle as a Dimension
 * @since 2.0
 */
public Dimension getSize() {
    return new Dimension(width, height);
}

/**
 * Returns a new Point which represents the middle point of the top side of this
 * Rectangle.
 *
 * @return  Point at the top of the Rectangle
 * @since 2.0
 */
public Point getTop() {
    return new Point(x + width / 2, y);
}

/**
 * Returns a new Point which represents the top left hand corner of this
 * Rectangle.
 *
 * @return  Point at the top left of the rectangle
 * @since 2.0
 */
public Point getTopLeft() {
    return new Point(x, y);
}

/**
 * Returns a new Point which represents the top right hand corner of this
 * Rectangle.
 *
 * @return  Point at the top right of the rectangle
 * @since 2.0
 */
public Point getTopRight() {
    return new Point(x + width, y);
}

/**
 * Returns a new Rectangle which is shifted along each axis by the passed
 * values.
 *
 * @param dx  Displacement along X axis
 * @param dy  Displacement along Y axis
 * @return  The new translated rectangle
 * @since 2.0
 */
public Rectangle getTranslated(int dx, int dy) {
    return (new Rectangle(this)).translate(dx, dy);
}

/**
 * Returns a new Rectangle which is shifted by the position of the given Point.
 *
 * @param pt  Point providing the amount of shift along each axis
 * @return  The new translated Rectangle
 * @since 2.0
 */
public Rectangle getTranslated(Point pt) {
    return (new Rectangle(this)).translate(pt);
}

/**
 * Returns a new rectangle whose width and height have been interchanged, as well
 * as its x and y values. This can be useful in orientation changes.
 *
 * @return  The transposed rectangle
 * @since 2.0
 */
public Rectangle getTransposed() {
    Rectangle r = new Rectangle(this);
    r.transpose();
    return r;
}

/**
 * Returns a new Rectangle which contains both this Rectangle and the Rectangle
 * supplied as input.
 *
 * @param rect  Rectangle for calculating union_
 * @return  A new unioned Rectangle
 * @since 2.0
 */
public Rectangle getUnion(Rectangle rect) {
    if (rect is null || rect.isEmpty())
        return new Rectangle(this);
    Rectangle union_ = new Rectangle(
        Math.min(x, rect.x),
        Math.min(y, rect.y), 0, 0);
    union_.width = Math.max(x + width, rect.x + rect.width) - union_.x;
    union_.height = Math.max(y + height, rect.y + rect.height) - union_.y;
    return union_;
}

/**
 * @see java.lang.Object#toHash()
 */
public override hash_t toHash() {
    return (x + height + 1) * (y + width + 1) ^ x ^ y;
}

/**
 * Sets the size of this Rectangle to the intersection region with the Rectangle
 * supplied as input, and returns this for convenience. The location and
 * dimensions are set to zero if there is no intersection with the input
 * Rectangle.
 *
 * @param rect  Rectangle for the calculating intersection.
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle intersect(Rectangle rect) {
    int x1 = Math.max(x, rect.x);
    int x2 = Math.min(x + width, rect.x + rect.width);
    int y1 = Math.max(y, rect.y);
    int y2 = Math.min(y + height, rect.y + rect.height);
    if (((x2 - x1) < 0) || ((y2 - y1) < 0))
        x = y = width = height = 0; // No intersection
    else {
        x = x1;
        y = y1;
        width = x2 - x1;
        height = y2 - y1;
    }
    return this;
}

/**
 * Returns <code>true</code> if the input Rectangle intersects this Rectangle.
 *
 * @param rect  Rectangle for the intersetion test
 * @return  <code>true</code> if the input Rectangle intersects this Rectangle
 * @since 2.0
 */
public bool intersects(Rectangle rect) {
    return rect.x < x + width
        && rect.y < y + height
        && rect.x + rect.width > x
        && rect.y + rect.height > y;
}

/**
 * Returns <code>true</code> if this Rectangle's width or height is less than or
 * equal to 0.
 *
 * @return  <code>true</code> if this Rectangle is empty
 * @since 2.0
 */
public bool isEmpty() {
    return width <= 0 || height <= 0;
}

/**
 * @see Translatable#performScale(double)
 */
public void performScale(double factor) {
    scale(factor);
}

/**
 * @see Translatable#performTranslate(int, int)
 */
public void performTranslate(int dx, int dy) {
    translate(dx, dy);
}

/**
 * Resizes this Rectangle by the Dimension provided as input and returns this
 * for convenience. This Rectange's width will become this.width + sizeDelta.width.
 * Likewise for height.
 *
 * @param sizeDelta  Resize data as a Dimension
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle resize(Dimension sizeDelta) {
    width += sizeDelta.width;
    height += sizeDelta.height;
    return this;
}

/**
 * Resizes this Rectangle by the values supplied as input and returns this for
 * convenience. This Rectangle's width will become this.width + dw. This
 * Rectangle's height will become this.height + dh.
 *
 * @param dw  Amount by which width is to be resized
 * @param dh  Amount by which height is to be resized
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle resize(int dw, int dh) {
    width += dw;
    height += dh;
    return this;
}

/**
 * Returns the x-coordinate of the right side of this Rectangle.
 *
 * @return  The X coordinate of the right side
 * @since 2.0
 */
public int right() {
    return x + width;
}

/**
 * Scales the location and size of this Rectangle by the given scale and returns
 * this for convenience.
 *
 * @param   scaleFactor The factor by which this rectangle will be scaled
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public final Rectangle scale(double scaleFactor) {
    return scale(scaleFactor, scaleFactor);
}

/**
 * Scales the location and size of this Rectangle by the given scales and returns
 * this for convenience.
 *
 * @param   scaleX  the factor by which the X dimension has to be scaled
 * @param   scaleY  the factor by which the Y dimension has to be scaled
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle scale(double scaleX, double scaleY) {
    int oldX = x;
    int oldY = y;
    x = cast(int)(Math.floor(x * scaleX));
    y = cast(int)(Math.floor(y * scaleY));
    width = cast(int)(Math.ceil((oldX + width) * scaleX)) - x;
    height = cast(int)(Math.ceil((oldY + height) * scaleY)) - y;
    return this;
}

/**
 * Sets the parameters of this Rectangle from the Rectangle passed in and
 * returns this for convenience.
 *
 * @return  <code>this</code> for convenience
 * @param rect Rectangle providing the bounding values
 * @since 2.0
 */
public Rectangle setBounds(Rectangle rect) {
    x = rect.x;
    y = rect.y;
    width = rect.width;
    height = rect.height;
    return this;
}

/**
 * Sets the location of this Rectangle to the point given as input and returns
 * this for convenience.
 *
 * @return  <code>this</code> for convenience
 * @param p  New position of this Rectangle
 * @since 2.0
 */
public Rectangle setLocation(Point p) {
    x = p.x;
    y = p.y;
    return this;
}

/**
 * Sets the location of this Rectangle to the coordinates given as input and
 * returns this for convenience.
 *
 * @param x1  The new X coordinate
 * @param y1  The new Y coordinate
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle setLocation(int x1, int y1) {
    x = x1;
    y = y1;
    return this;
}

/**
 * Sets the width and height of this Rectangle to the width and height of the
 * given Dimension and returns this for convenience.
 *
 * @param d  The new Dimension
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle setSize(Dimension d) {
    width = d.width;
    height = d.height;
    return this;
}

/**
 * Sets the width of this Rectangle to <i>w</i> and the height of this
 * Rectangle to <i>h</i> and returns this for convenience.
 *
 * @return  <code>this</code> for convenience
 * @param w  The new width
 * @param h  The new height
 * @since 2.0
 */
public Rectangle setSize(int w, int h) {
    width = w;
    height = h;
    return this;
}

/**
 * Shrinks the sides of this Rectangle by the horizontal and vertical values
 * provided as input, and returns this Rectangle for convenience. The center of
 * this Rectangle is kept constant.
 *
 * @param h  Horizontal reduction amount
 * @param v  Vertical reduction amount
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle shrink(int h, int v) {
    x += h;
    width -= (h + h);
    y += v;
    height -= (v + v);
    return this;
}

/**
 * Returns the description of this Rectangle.
 *
 * @return String containing the description
 * @since 2.0
 */
public override String toString() {
    return Format("Rectangle({}, {}, {}, {})", x, y, width, height );
}

/**
 * Returns <code>true</code> if the input Rectangle touches this Rectangle.
 *
 * @param rect  Rectangle being checked for contact
 * @return  <code>true</code> if rect touches this Rectangle
 * @since 2.0
 */
public bool touches(Rectangle rect) {
    return rect.x <= x + width
        && rect.y <= y + height
        && rect.x + rect.width >= x
        && rect.y + rect.height >= y;
}

/**
 * Moves this Rectangle horizontally by the x value of the given Point and
 * vertically by the y value of the given Point, then returns this Rectangle for
 * convenience.
 *
 * @param p  Point which provides translation information
 * @return  <code>this</code> for convenience
 */
public Rectangle translate(Point p) {
    x += p.x;
    y += p.y;
    return this;
}

/**
 * Moves this Rectangle horizontally by dx and vertically by dy, then returns
 * this Rectangle for convenience.
 *
 * @param dx  Shift along X axis
 * @param dy  Shift along Y axis
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle translate(int dx, int dy) {
    x += dx;
    y += dy;
    return this;
}

/**
 * Switches the x and y values, as well as the width and height of this Rectangle.
 * Useful for orientation changes.
 *
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle transpose() {
    int temp = x;
    x = y;
    y = temp;
    temp = width;
    width = height;
    height = temp;
    return this;
}

/**
 * Unions this Rectangle's width and height with the specified Dimension.
 *
 * @param d Dimension being unioned
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle union_(Dimension d) {
    width = Math.max(width, d.width);
    height = Math.max(height, d.height);
    return this;
}

/**
 * Updates this Rectangle's bounds to the minimum size which can hold both this
 * Rectangle and the coordinate (x,y).
 *
 * @return  <code>this</code> for convenience
 * @param x1 X coordinate
 * @param y1 Y coordinate
 * @since 2.0
 */
public Rectangle union_(int x1, int y1) {
    if (x1 < x) {
        width += (x - x1);
        x = x1;
    } else {
        int right = x + width;
        if (x1 >= right) {
            right = x1 + 1;
            width = right - x;
        }
    }
    if (y1 < y) {
        height += (y - y1);
        y = y1;
    } else {
        int bottom = y + height;
        if (y1 >= bottom) {
            bottom = y1 + 1;
            height = bottom - y;
        }
    }
    return this;
}

/**
 * Updates this Rectangle's bounds to the minimum size which can hold both this
 * Rectangle and the given Point.
 *
 * @param p  Point to be unioned with this Rectangle
 * @since 2.0
 */
public void union_(Point p) {
    union_(p.x, p.y);
}

/**
 * Updates this Rectangle's dimensions to the minimum size which can hold both
 * this Rectangle and the given Rectangle.
 *
 * @return  <code>this</code> for convenience
 * @param rect  Rectangle to be unioned with this Rectangle
 * @since 2.0
 */
public Rectangle union_(Rectangle rect) {
    if (rect is null)
        return this;
    return union_(rect.x, rect.y, rect.width, rect.height);
}

/**
 * Updates this Rectangle's dimensions to the minimum size which can hold both
 * this Rectangle and the rectangle (x, y, w, h).
 *
 * @param x X coordiante of desired union_.
 * @param y Y coordiante of desired union_.
 * @param w Width of desired union_.
 * @param h Height of desired union_.
 * @return  <code>this</code> for convenience
 * @since 2.0
 */
public Rectangle union_(int x, int y, int w, int h) {
    int right = Math.max(this.x + width, x + w);
    int bottom = Math.max(this.y + height, y + h);
    this.x = Math.min(this.x, x);
    this.y = Math.min(this.y, y);
    this.width = right - this.x;
    this.height = bottom - this.y;
    return this;
}

/**
 * Returns <code>double</code> x coordinate
 *
 * @return <code>double</code> x coordinate
 * @since 3.4
 */
public double preciseX() {
    return x;
}

/**
 * Returns <code>double</code> y coordinate
 *
 * @return <code>double</code> y coordinate
 * @since 3.4
 */
public double preciseY() {
    return y;
}

/**
 * Returns <code>double</code> width
 *
 * @return <code>double</code> width
 * @since 3.4
 */
public double preciseWidth() {
    return width;
}

/**
 * Returns <code>double</code> height
 *
 * @return <code>double</code> height
 * @since 3.4
 */
public double preciseHeight() {
    return height;
}

}