| /* |
| * 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.sis.internal.referencing.provider; |
| |
| import javax.xml.bind.annotation.XmlTransient; |
| import org.opengis.parameter.ParameterValueGroup; |
| import org.opengis.parameter.ParameterDescriptorGroup; |
| import org.opengis.referencing.operation.Conversion; |
| import org.opengis.referencing.operation.MathTransform; |
| import org.opengis.referencing.operation.MathTransformFactory; |
| import org.apache.sis.referencing.operation.matrix.Matrices; |
| import org.apache.sis.referencing.operation.matrix.MatrixSIS; |
| import org.apache.sis.referencing.operation.transform.MathTransforms; |
| |
| |
| /** |
| * The provider for <cite>"axis order reversal (2D)"</cite> (EPSG:9843). |
| * This is a trivial operation that just swap the two axes. |
| * The inverse operation is this operation itself. |
| * |
| * @author Martin Desruisseaux (Geomatys) |
| * @version 0.8 |
| * @since 0.8 |
| * @module |
| */ |
| @XmlTransient |
| public class AxisOrderReversal extends AbstractProvider { |
| /** |
| * Serial number for inter-operability with different versions. |
| */ |
| private static final long serialVersionUID = -663548119085488844L; |
| |
| /** |
| * The group of all parameters expected by this coordinate operation (in this case, none). |
| */ |
| private static final ParameterDescriptorGroup PARAMETERS = builder() |
| .addIdentifier("9843").addName("Axis order reversal (2D)").createGroup(); |
| |
| /** |
| * The unique instance, created when first needed. |
| */ |
| private transient MathTransform transform; |
| |
| /** |
| * Constructs a provider with default parameters. |
| */ |
| public AxisOrderReversal() { |
| super(2, 2, PARAMETERS); |
| } |
| |
| /** |
| * For {@link AxisOrderReversal3D} subclass only. |
| * |
| * @param dimensions number of dimensions in the source and target CRS of this operation method. |
| * @param parameters description of parameters expected by this operation. |
| */ |
| AxisOrderReversal(final int dimensions, final ParameterDescriptorGroup parameters) { |
| super(dimensions, dimensions, parameters); |
| } |
| |
| /** |
| * Returns the operation type. |
| * |
| * @return interface implemented by all coordinate operations that use this method. |
| */ |
| @Override |
| public final Class<Conversion> getOperationType() { |
| return Conversion.class; |
| } |
| |
| /** |
| * Returns the transform. |
| * |
| * @param factory ignored (can be null). |
| * @param values ignored. |
| * @return the math transform. |
| */ |
| @Override |
| public synchronized MathTransform createMathTransform(MathTransformFactory factory, ParameterValueGroup values) { |
| if (transform == null) { |
| final MatrixSIS m = Matrices.createZero(getTargetDimensions() + 1, getSourceDimensions() + 1); |
| m.setElement(0, 1, 1); |
| m.setElement(1, 0, 1); |
| transform = MathTransforms.linear(m); |
| } |
| return transform; |
| } |
| } |