Java tutorial
//package com.java2s; /* gvSIG. Sistema de Informaci??eogr?ca de la Generalitat Valenciana * * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA. * * For more information, contact: * * Generalitat Valenciana * Conselleria d'Infraestructures i Transport * Av. Blasco Ib?z, 50 * 46010 VALENCIA * SPAIN * * +34 963862235 * gvsig@gva.es * www.gvsig.gva.es * * or * * IVER T.I. S.A * Salamanca 50 * 46005 Valencia * Spain * * +34 963163400 * dac@iver.es */ import java.awt.geom.AffineTransform; import java.awt.geom.Point2D; import java.awt.geom.Rectangle2D; public class Main { public static Rectangle2D.Double fromSheetRect(Rectangle2D r, AffineTransform at) { Point2D.Double pSheet = new Point2D.Double(r.getX(), r.getY()); Point2D.Double pSX = new Point2D.Double(r.getMaxX(), r.getMinY()); Point2D.Double pSY = new Point2D.Double(r.getMinX(), r.getMaxY()); Point2D.Double pScreen = new Point2D.Double(); Point2D.Double pScreenX = new Point2D.Double(); Point2D.Double pScreenY = new Point2D.Double(); try { at.transform(pSheet, pScreen); at.transform(pSX, pScreenX); at.transform(pSY, pScreenY); } catch (Exception e) { System.err.print(e.getMessage()); } Rectangle2D.Double res = new Rectangle2D.Double(); res.setRect(pScreen.getX(), pScreen.getY(), pScreen.distance(pScreenX), pScreen.distance(pScreenY)); return res; } }