/*******************************************************************************
* 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
*******************************************************************************/
package org.eclipse.draw2d.geometry;
/**
* @author danlee
*/
public class PrecisionPoint extends Point {
/** Double value for X **/
public double preciseX;
/** Double value for Y **/
public double preciseY;
/**
* Constructor for PrecisionPoint.
*/
public PrecisionPoint() {
super();
}
/**
* Constructor for PrecisionPoint.
* @param copy Point from which the initial values are taken
*/
public PrecisionPoint(Point copy) {
preciseX = copy.preciseX();
preciseY = copy.preciseY();
updateInts();
}
/**
* Constructor for PrecisionPoint.
* @param x X value
* @param y Y value
*/
public PrecisionPoint(int x, int y) {
super(x, y);
preciseX = x;
preciseY = y;
}
/**
* Constructor for PrecisionPoint.
* @param x X value
* @param y Y value
*/
public PrecisionPoint(double x, double y) {
preciseX = x;
preciseY = y;
updateInts();
}
/**
* @see org.eclipse.draw2d.geometry.Point#getCopy()
*/
public Point getCopy() {
return new PrecisionPoint(preciseX, preciseY);
}
/**
* @see org.eclipse.draw2d.geometry.Point#performScale(double)
*/
public void performScale(double factor) {
preciseX = preciseX * factor;
preciseY = preciseY * factor;
updateInts();
}
/**
* @see org.eclipse.draw2d.geometry.Point#performTranslate(int, int)
*/
public void performTranslate(int dx, int dy) {
preciseX += dx;
preciseY += dy;
updateInts();
}
/**
* @see org.eclipse.draw2d.geometry.Point#setLocation(Point)
*/
public Point setLocation(Point pt) {
preciseX = pt.preciseX();
preciseY = pt.preciseY();
updateInts();
return this;
}
/**
* Updates the integer fields using the precise versions.
*/
public final void updateInts() {
x = (int)Math.floor(preciseX + 0.000000001);
y = (int)Math.floor(preciseY + 0.000000001);
}
/**
* @see org.eclipse.draw2d.geometry.Point#preciseX()
*/
public double preciseX() {
return preciseX;
}
/**
* @see org.eclipse.draw2d.geometry.Point#preciseY()
*/
public double preciseY() {
return preciseY;
}
/**
* @see org.eclipse.draw2d.geometry.Point#equals(java.lang.Object)
*/
public boolean equals(Object o) {
if (o instanceof PrecisionPoint) {
PrecisionPoint p = (PrecisionPoint)o;
return p.preciseX == preciseX && p.preciseY == preciseY;
}
return super.equals(o);
}
}