root / trunk / libraries / libExpressions / src / main / java / org / gvsig / operators / Tan.java @ 23299
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package org.gvsig.operators; |
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import org.apache.bsf.BSFException; |
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import org.apache.bsf.BSFManager; |
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import org.gvsig.baseclasses.AbstractOperator; |
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import org.gvsig.baseclasses.IOperator; |
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import org.gvsig.expresions.EvalOperatorsTask; |
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import com.iver.andami.PluginServices; |
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/**
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* @author Vicente Caballero Navarro
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*/
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public class Tan extends AbstractOperator{ |
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public String addText(String s) { |
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return toString()+"("+s+")"; |
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} |
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public String toString() { |
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return "tan"; |
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} |
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public void eval(BSFManager interpreter) throws BSFException { |
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// interpreter.eval(ExpressionFieldExtension.BEANSHELL,null,-1,-1,"double tan(double value){return java.lang.Math.tan(value);};");
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interpreter.exec(EvalOperatorsTask.JYTHON,null,-1,-1,"def tan(value):\n" + |
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" import java.lang.Math\n" +
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" return java.lang.Math.tan(value)");
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} |
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public boolean isEnable() { |
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return (getType()==IOperator.NUMBER);
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} |
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public String getDescription() { |
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return PluginServices.getText(this, "parameter") + ": " + |
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PluginServices.getText(this, "numeric_value") + "\n" + |
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PluginServices.getText(this, "returns") + ": " + |
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PluginServices.getText(this, "numeric_value") + "\n" + |
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PluginServices.getText(this, "description") + ": " + |
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"Returns the trigonometric tangent of an angle. Special cases:\n" +
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"* If the argument is NaN or an infinity, then the result is NaN.\n" +
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"* If the argument is zero, then the result is a zero with the same sign as the argument.";
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} |
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} |