jnidzwetzki/bboxdb

/*******************************************************************************
 *
 *    Copyright (C) 2015-2022 the BBoxDB project
 *
 *    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.
 *
 *******************************************************************************/
package org.bboxdb.commons.math;

import java.util.Optional;

public class HyperrectangleHelper {
    
    /**
     * Parse the given bounding box
     * @param bbox
     * @return
     */
    public static Optional<Hyperrectangle> parseBBox(final String bbox) {

        try {
            return Optional.of(Hyperrectangle.fromString(bbox));
        } catch (IllegalArgumentException e) {
            System.err.println("Invalid argument: " + bbox);
            return Optional.empty();
        }
    }
    
    /**
     * Get a Hyperrectangle covering the full space
     * @param dimensions
     * @param min
     * @param max
     * @return
     */
    public static Hyperrectangle getFullSpaceForDimension(final int dimensions, 
            final double min, final double max) {
        
        if(dimensions < 1) {
            throw new IllegalArgumentException("The dimensionality has to be at least 1");
        }
        
        if(min >= max) {
            throw new IllegalArgumentException("Min value has to be smaller than max value " 
                    + min + " " + max); 
        }
        
        final double fullSpaceValues[] = new double[2*dimensions];
        
        for(int i = 0; i < dimensions; i++) {
            fullSpaceValues[2*i] = min;
            fullSpaceValues[2*i+1] = max;
        }
        
        return new Hyperrectangle(fullSpaceValues);
    }
}