/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: TransistorSize.java
*
* Copyright (c) 2003 Sun Microsystems and Static Free Software
*
* Electric(tm) is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Electric(tm) is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.technology;
import com.sun.electric.database.variable.VarContext;
/**
* Holds the Width and Length of a PrimitiveNode that is a transistor.
* This holds the width, length, and area as objects, because the width and length,
* may be specified as strings if they are java code, or just numbers.
*/
public class TransistorSize extends PrimitiveNodeSize {
private final Object activeLength; // extension of OD on PO for parasitic calculation
private final Object mFactor; // m multiplier factor.
/**
* Constructor creates a TransistorSize with a given size.
* @param width the width of the TransistorSize.
* @param length the length of the TransistorSize.
* @param activeLen the length of the active area of the TransistorSize.
* @param polyAlignX
* @param mFactor the m multiplier factor. This is only populated for schematics.
*
*/
public TransistorSize(Object width, Object length, Object activeLen, Object mFactor, boolean polyAlignX) {
super(width, length, polyAlignX);
this.activeLength = activeLen;
this.mFactor = mFactor;
}
/**
* Method to return the length of the active area of this TransistorSize.
* @return the length of the active area of this TransistorSize.
*/
public Object getActiveLength() {return activeLength; }
/**
* Gets the area *ONLY IF* the width and length can be converted to a double.
* i.e. they are Numbers or a parsable Strings. If they are some other type,
* this method returns zero.
* @return the area.
*/
public double getDoubleArea() {
return getDoubleWidth() * getDoubleLength();
}
/**
* Gets the active length *ONLY IF* the active length can be converted to a double.
* i.e. they are Numbers or a parsable Strings. If they are some other type,
* this method returns zero.
* @return the active length.
*/
public double getDoubleActiveLength() {
return VarContext.objectToDouble(activeLength, 0);
}
/**
* Gets the m multiplier factor *ONLY IF* the m factor can be converted to a double.
* Otherwise, returns 1.
* @return the m factor.
*/
public double getMFactor() {
return VarContext.objectToDouble(mFactor, 1);
}
}