Calculates determinant of orientation matrix. - Java java.lang

Java examples for java.lang:Math Geometry Shape

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Description

Calculates determinant of orientation matrix.

Demo Code

/**/*from w w w  .j a v  a2  s .  co m*/
 * Copyright 2012 Petr Mor?vek
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

public class Main{
    /**
     * Calculates determinant of orientation matrix.
     *
     * @param point1 first point
     * @param point2 second point
     * @param point3 third point
     *
     * @return determinant of orientation matrix
     */
    public static double orientationDet(final Point point1,
            final Point point2, final Point point3) {
        return (point3.getX() - point2.getX())
                * (point1.getY() - point2.getY())
                - (point1.getX() - point2.getX())
                * (point3.getY() - point2.getY());
    }
}

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