# PDShadingType1.java

    /*
     * Licensed to the Apache Software Foundation (ASF) under one or more
     * contributor license agreements.  See the NOTICE file distributed with
     * this work for additional information regarding copyright ownership.
     * The ASF licenses this file to You under the Apache License, Version 2.0
     * (the "License"); you may not use this file except in compliance with
     * the License.  You may obtain a copy of the License at
     *
     *      http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */
    package org.apache.pdfbox.pdmodel.graphics.shading;

    import java.awt.Paint;
    import java.awt.geom.AffineTransform;

    import org.apache.pdfbox.cos.COSArray;
    import org.apache.pdfbox.cos.COSDictionary;
    import org.apache.pdfbox.cos.COSFloat;
    import org.apache.pdfbox.cos.COSName;
    import org.apache.pdfbox.util.Matrix;

    /**
     * Resources for a function based shading.
     */
    public class PDShadingType1 extends PDShading
    {
        private COSArray domain = null;

        /**
         * Constructor using the given shading dictionary.
         *
         * @param shadingDictionary the dictionary for this shading
         */
        public PDShadingType1(COSDictionary shadingDictionary)
        {
            super(shadingDictionary);
        }

        @Override
        public int getShadingType()
        {
            return PDShading.SHADING_TYPE1;
        }

        /**
         * This will get the optional Matrix of a function based shading.
         *
         * @return the matrix
         */
        public Matrix getMatrix()
        {
            return Matrix.createMatrix(getCOSObject().getDictionaryObject(COSName.MATRIX));
        }

        /**
         * Sets the optional Matrix entry for the function based shading.
         *
         * @param transform the transformation matrix
         */
        public void setMatrix(AffineTransform transform)
        {
            COSArray matrix = new COSArray();
            double[] values = new double[6];
            transform.getMatrix(values);
            for (double v : values)
            {
                matrix.add(new COSFloat((float) v));
            }
            getCOSObject().setItem(COSName.MATRIX, matrix);
        }

        /**
         * This will get the optional Domain values of a function based shading.
         *
         * @return the domain values
         */
        public COSArray getDomain()
        {
            if (domain == null)
            {
                domain = getCOSObject().getCOSArray(COSName.DOMAIN);
            }
            return domain;
        }

        /**
         * Sets the optional Domain entry for the function based shading.
         *
         * @param newDomain the domain array
         */
        public void setDomain(COSArray newDomain)
        {
            domain = newDomain;
            getCOSObject().setItem(COSName.DOMAIN, newDomain);
        }

        @Override
        public Paint toPaint(Matrix matrix)
        {
            return new Type1ShadingPaint(this, matrix);
        }
    }