/* Copyright 1995-2017 Esri Licensed 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. For additional information, contact: Environmental Systems Research Institute, Inc. Attn: Contracts Dept 380 New York Street Redlands, California, USA 92373 email: [email protected] */ package com.esri.core.geometry.ogc; import com.esri.core.geometry.MultiPoint; public abstract class OGCCurve extends OGCGeometry { public abstract double length(); public abstract OGCPoint startPoint(); public abstract OGCPoint endPoint(); public abstract boolean isClosed(); public boolean isRing() { return isSimple() && isClosed(); } @Override public OGCGeometry boundary() { if (isEmpty()) return new OGCMultiPoint(this.getEsriSpatialReference()); if (isClosed()) return new OGCMultiPoint(new MultiPoint(getEsriGeometry() .getDescription()), esriSR);// return empty multipoint; else return new OGCMultiPoint(startPoint(), endPoint()); } }