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/*
* ====================================================================
* 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.poi.sl.draw.geom;
import java.util.regex.Matcher;
/**
* Date: 10/24/11
*
* @author Yegor Kozlov
*/
public class CosineArcTanExpression implements Expression {
private String arg1, arg2, arg3;
CosineArcTanExpression(Matcher m){
arg1 = m.group(1);
arg2 = m.group(2);
arg3 = m.group(3);
}
public double evaluate(Context ctx){
double x = ctx.getValue(arg1);
double y = ctx.getValue(arg2);
double z = ctx.getValue(arg3);
return x*Math.cos(Math.atan(z / y));
}
}
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