AnalogSwitch2Elm.java

/*    
    Copyright (C) Paul Falstad and Iain Sharp
    
    This file is part of CircuitJS1.

    CircuitJS1 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 2 of the License, or
    (at your option) any later version.

    CircuitJS1 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 CircuitJS1.  If not, see <http://www.gnu.org/licenses/>.
*/

package com.lushprojects.circuitjs1.client;

//import java.awt.*;
//import java.util.StringTokenizer;

class AnalogSwitch2Elm extends AnalogSwitchElm {
    public AnalogSwitch2Elm(int xx, int yy) {
	super(xx, yy);
    }
    public AnalogSwitch2Elm(int xa, int ya, int xb, int yb, int f,
			    StringTokenizer st) {
	super(xa, ya, xb, yb, f, st);
    }

    final int openhs = 16;
    Point swposts[], swpoles[], ctlPoint;
    void setPoints() {
	super.setPoints();
	calcLeads(32);
	swposts = newPointArray(2);
	swpoles = newPointArray(2);
	interpPoint2(lead1,  lead2,  swpoles[0], swpoles[1], 1, openhs);
	interpPoint2(point1, point2, swposts[0], swposts[1], 1, openhs);
	ctlPoint = interpPoint(point1, point2, .5, openhs);
    }
    int getPostCount() { return 4; }

    void draw(Graphics g) {
	setBbox(point1, point2, openhs);

	// draw first lead
	setVoltageColor(g, volts[0]);
	drawThickLine(g, point1, lead1);

	// draw second lead
	setVoltageColor(g, volts[1]);
	drawThickLine(g, swpoles[0], swposts[0]);
	    
	// draw third lead
	setVoltageColor(g, volts[2]);
	drawThickLine(g, swpoles[1], swposts[1]);

	// draw switch
	g.setColor(lightGrayColor);
	int position = (open) ? 1 : 0;
	drawThickLine(g, lead1, swpoles[position]);
	    
	updateDotCount();
	drawDots(g, point1, lead1, curcount);
	drawDots(g, swpoles[position], swposts[position], curcount);
	drawPosts(g);
    }
	
    Point getPost(int n) {
	return (n == 0) ? point1 : (n == 3) ? ctlPoint : swposts[n-1];
    }
    int getDumpType() { return 160; }

    void calculateCurrent() {
	if (open)
	    current = (volts[0]-volts[2])/r_on;
	else
	    current = (volts[0]-volts[1])/r_on;
    }
	
    void stamp() {
	sim.stampNonLinear(nodes[0]);
	sim.stampNonLinear(nodes[1]);
	sim.stampNonLinear(nodes[2]);
    }
    void doStep() {
	open = (volts[3] < 2.5);
	if ((flags & FLAG_INVERT) != 0)
	    open = !open;
	if (open) {
	    sim.stampResistor(nodes[0], nodes[2], r_on);
	    sim.stampResistor(nodes[0], nodes[1], r_off);
	} else {
	    sim.stampResistor(nodes[0], nodes[1], r_on);
	    sim.stampResistor(nodes[0], nodes[2], r_off);
	}
    }
	
    boolean getConnection(int n1, int n2) {
	if (n1 == 3 || n2 == 3)
	    return false;
	return true;
    }
    void getInfo(String arr[]) {
	arr[0] = "analog switch (SPDT)";
	arr[1] = "I = " + getCurrentDText(getCurrent());
    }
    
    double getCurrentIntoPoint(int xa, int ya) {
	if (xa == x && ya == y)
	    return -current;
	int position = (open) ? 1 : 0;
	if (xa == swposts[position].x && ya == swposts[position].y)
	    return current;
	return 0;
    }	
}