| /* |
| * 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.referencing.privy; |
| |
| import java.awt.Shape; |
| |
| |
| /** |
| * Base class for some (not all) shape implementations in Apache SIS. |
| * This base class provides a mechanism for determining if a shape stores |
| * coordinate values as simple-precision or double-precision floating point numbers. |
| * |
| * @author Martin Desruisseaux (MPO, IRD, Geomatys) |
| */ |
| public abstract class AbstractShape implements Shape { |
| /** |
| * Base classes of Java2D implementations known to store coordinates |
| * as single-precision floating point numbers. |
| */ |
| private static final Class<?>[] FLOAT_SHAPES = { |
| java.awt.geom.Point2D.Float.class, |
| java.awt.geom.Line2D.Float.class, |
| java.awt.geom.QuadCurve2D.Float.class, |
| java.awt.geom.CubicCurve2D.Float.class, |
| java.awt.geom.Rectangle2D.Float.class, |
| java.awt.geom.RoundRectangle2D.Float.class, |
| java.awt.geom.Arc2D.Float.class, |
| java.awt.geom.Ellipse2D.Float.class, |
| java.awt.geom.Path2D.Float.class |
| }; |
| |
| /** |
| * Creates a new shape. |
| */ |
| protected AbstractShape() { |
| } |
| |
| /** |
| * Returns {@code true} if this shape backed by primitive {@code float} values. |
| * |
| * @return {@code true} if this shape is backed by {@code float} coordinate values. |
| */ |
| protected boolean isFloat() { |
| return false; |
| } |
| |
| /** |
| * Returns {@code true} if the given shape is presumed backed by primitive {@code float} values. |
| * The given object should be an instance of {@link Shape} or {@link java.awt.geom.Point2D}. |
| * |
| * @param shape the shape for which to determine the backing primitive type. |
| * @return {@code true} if the given shape is presumed backed by {@code float} coordinate values. |
| */ |
| public static boolean isFloat(final Object shape) { |
| if (shape instanceof AbstractShape) { |
| return ((AbstractShape) shape).isFloat(); |
| } |
| for (final Class<?> c : FLOAT_SHAPES) { |
| if (c.isInstance(shape)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |