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/**
 * Copyright (c) 2005, www.pdfbox.org
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. Neither the name of pdfbox; nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * http://www.pdfbox.org
 *
 */
package org.pdfbox.util.operator.pagedrawer;

import java.util.List;

import org.pdfbox.cos.COSNumber;
import org.pdfbox.pdfviewer.PageDrawer;
import org.pdfbox.util.PDFOperator;
import org.pdfbox.util.operator.OperatorProcessor;

/**
 * Implementation of content stream operator for page drawer.
 * 
 * @author Ben Litchfield
 * @version $Revision: 1.2 $
 */
public class CurveToReplicateFinalPoint extends OperatorProcessor
{


    /**
     * process : y : Append curved segment to path (final point replicated).
     * @param operator The operator that is being executed.
     * @param arguments List
     */
    public void process(PDFOperator operator, List arguments) 
    {
        PageDrawer drawer = (PageDrawer)context;
        
        COSNumber x1 = (COSNumber)arguments.get( 0 );
        COSNumber y1 = (COSNumber)arguments.get( 1 );
        COSNumber x3 = (COSNumber)arguments.get( 2 );
        COSNumber y3 = (COSNumber)arguments.get( 3 );
        float x1f = x1.floatValue();
        float y1f = (float)drawer.fixY( x1f, y1.floatValue() );
        float x3f = x3.floatValue();
        float y3f = (float)drawer.fixY( x3f, y3.floatValue() );
        drawer.getLinePath().curveTo(x1f,y1f,x3f,y3f,x3f,y3f);
    }
}