Java Geometry Algorithm cornersToWorldFile(Point2D[] esq, Dimension size)

Description

corners To World File

License

Open Source License

Declaration

public static double[] cornersToWorldFile(Point2D[] esq, Dimension size) 

Method Source Code

//package com.java2s;
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
 *
 * Copyright (C) 2008 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.
 *//*from   w ww.j  a  v a 2s.  c  o  m*/

import java.awt.Dimension;

import java.awt.geom.Point2D;

public class Main {

    public static double[] cornersToWorldFile(Point2D[] esq, Dimension size) {
        double a = 0, b = 0, c = 0, d = 0, e = 0, f = 0;
        double x1 = esq[0].getX(), y1 = esq[0].getY();
        double x2 = esq[1].getX(), y2 = esq[1].getY();
        double x3 = esq[2].getX(), y3 = esq[2].getY();
        double x4 = esq[3].getX(), y4 = esq[3].getY();
        // A: X-scale
        a = Math.abs(Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2)) / size.getWidth());

        // E: negative Y-scale
        e = -Math.abs(Math.sqrt((x1 - x4) * (x1 - x4) + (y1 - y4) * (y1 - y4)) / size.getHeight());

        // C, F: upper-left coordinates
        c = x1;
        f = y1;

        // B & D: rotation parameters
        b = (a * size.getWidth() + c - x3) / size.getHeight() * -1;
        d = (e * size.getHeight() + f - y3) / size.getWidth() * -1;

        double[] wf = { a, d, b, e, c, f };
        return wf;
    }
}

Related

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2. computeBarycenter(Map values)
3. computeEuclideanDistance(Point2D point1, Point2D point2)
4. computePolygonArea(Point2D[] pts)
5. coordinateSplit(Point2D.Double[] aPoints, double[] aX, double[] aY)
6. curvedLineHit(Point point, Point startPoint, Point endPoint, Point controlPoint1, Point controlPoint2, float padding)
7. derivativeOfCubicBezier(Point2D p0, Point2D p1, Point2D p2, Point2D p3, double t)
8. deriveLocation(Point origin, double radius)
9. determineConnectionPoint(Point wayPoint, Polygon polygon)