iText kernel.jar Source Code

kernel.jar is a component in iText Java library to provide low-level functionalities. iText Java library allows you to generate and manage PDF documents.

The Source Code files are provided together with the JAR file in the binary packge like iText7-Core-7.1.4.zip. You can download it at iText 7 Core Download site.

You can compile it to generate your JAR file, using kernel.pom as the build configuration file.

The source code of kernel-7.1.4.jar is provided below:

✍: FYIcenter.com

com/itextpdf/kernel/geom/LineSegment.java

/*

    This file is part of the iText (R) project.
    Copyright (c) 1998-2018 iText Group NV
    Authors: Bruno Lowagie, Paulo Soares, et al.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License version 3
    as published by the Free Software Foundation with the addition of the
    following permission added to Section 15 as permitted in Section 7(a):
    FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
    ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
    OF THIRD PARTY RIGHTS

    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 Affero General Public License for more details.
    You should have received a copy of the GNU Affero General Public License
    along with this program; if not, see http://www.gnu.org/licenses or write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA, 02110-1301 USA, or download the license from the following URL:
    http://itextpdf.com/terms-of-use/

    The interactive user interfaces in modified source and object code versions
    of this program must display Appropriate Legal Notices, as required under
    Section 5 of the GNU Affero General Public License.

    In accordance with Section 7(b) of the GNU Affero General Public License,
    a covered work must retain the producer line in every PDF that is created
    or manipulated using iText.

    You can be released from the requirements of the license by purchasing
    a commercial license. Buying such a license is mandatory as soon as you
    develop commercial activities involving the iText software without
    disclosing the source code of your own applications.
    These activities include: offering paid services to customers as an ASP,
    serving PDFs on the fly in a web application, shipping iText with a closed
    source product.

    For more information, please contact iText Software Corp. at this
    address: sales@itextpdf.com
 */
package com.itextpdf.kernel.geom;

/**
 * Represents a line segment in a particular coordinate system.  This class is immutable.
 */
public class LineSegment {

    /** Start vector of the segment. */
    private final Vector startPoint;
    /** End vector of the segment. */
    private final Vector endPoint;

    /**
     * Creates a new line segment.
     * @param startPoint the start point of a line segment.
     * @param endPoint the end point of a line segment.
     */
    public LineSegment(Vector startPoint, Vector endPoint) {
        this.startPoint = startPoint;
        this.endPoint = endPoint;
    }

    /**
     * @return the start point
     */
    public Vector getStartPoint() {
        return startPoint;
    }

    /**
     * @return the end point
     */
    public Vector getEndPoint() {
        return endPoint;
    }

    /**
     * @return the length of this line segment
     */
    public float getLength(){
        return endPoint.subtract(startPoint).length();
    }

    /**
     * Computes the bounding rectangle for this line segment.  The rectangle has a rotation 0 degrees
     * with respect to the coordinate system that the line system is in.  For example, if a line segment
     * is 5 unit long and sits at a 37 degree angle from horizontal, the bounding rectangle will have
     * origin of the lower left hand end point of the segment, with width = 4 and height = 3.
     * @return the bounding rectangle
     */
    public Rectangle getBoundingRectangle(){
        float x1 = getStartPoint().get(Vector.I1);
        float y1 = getStartPoint().get(Vector.I2);
        float x2 = getEndPoint().get(Vector.I1);
        float y2 = getEndPoint().get(Vector.I2);
        return new Rectangle(Math.min(x1, x2), Math.min(y1, y2), Math.abs(x2-x1), Math.abs(y2-y1));
    }

    /**
     * Transforms the segment by the specified matrix
     * @param m the matrix for the transformation
     * @return the transformed segment
     */
    public LineSegment transformBy(Matrix m){
        Vector newStart = startPoint.cross(m);
        Vector newEnd = endPoint.cross(m);
        return new LineSegment(newStart, newEnd);
    }

    /**
     * Checks if a segment contains another segment in itself
     * @param other a segment to be checked
     * @return true if this segment contains other one, false otherwise
     */
    public boolean containsSegment(LineSegment other) {
        return other != null && containsPoint(other.startPoint) && containsPoint(other.endPoint);

    }

    /**
     * Checks if a segment contains a given point in itself
     * @param point a point to be checked
     * @return true if this segment contains given point, false otherwise
     */
    public boolean containsPoint(Vector point) {
        if (point == null) {
            return false;
        }

        Vector diff1 = point.subtract(startPoint);
        if (diff1.get(0) < 0 || diff1.get(1) < 0 || diff1.get(2) < 0) {
            return false;
        }

        Vector diff2 = endPoint.subtract(point);
        if (diff2.get(0) < 0 || diff2.get(1) < 0 || diff2.get(2) < 0) {
            return false;
        }

        return true;
    }
}

com/itextpdf/kernel/geom/LineSegment.java

 

⇒ iText io.jar Source Code

⇐ Download and Install iText7-Core-7.1.4.zip

⇑ Download and Install iText Java Library

⇑⇑ iText for PDF Generation

2010-02-18, 48522👍, 0💬