GroundElm.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;

    class GroundElm extends CircuitElm {
	public GroundElm(int xx, int yy) { super(xx, yy); }
	public GroundElm(int xa, int ya, int xb, int yb, int f,
			 StringTokenizer st) {
	    super(xa, ya, xb, yb, f);
	}
	int getDumpType() { return 'g'; }
	int getPostCount() { return 1; }
	void draw(Graphics g) {
	    setVoltageColor(g, 0);
	    drawThickLine(g, point1, point2);
	    int i;
	    for (i = 0; i != 3; i++) {
		int a = 10-i*4;
		int b = i*5; // -10;
		interpPoint2(point1, point2, ps1, ps2, 1+b/dn, a);
		drawThickLine(g, ps1, ps2);
	    }
	    doDots(g);
	    interpPoint(point1, point2, ps2, 1+11./dn);
	    setBbox(point1, ps2, 11);
	    drawPosts(g);
	}
	void setCurrent(int x, double c) { current = -c; }
	void stamp() {
	    sim.stampVoltageSource(0, nodes[0], voltSource, 0);
	}
	double getVoltageDiff() { return 0; }
	int getVoltageSourceCount() { return 1; }
	void getInfo(String arr[]) {
	    arr[0] = "ground";
	    arr[1] = "I = " + getCurrentText(getCurrent());
	}
	boolean hasGroundConnection(int n1) { return true; }
	int getShortcut() { return 'g'; }
	
	@Override double getCurrentIntoNode(int n) { return -current; }
	
	@Override double getCurrentIntoPoint(int xa, int ya) { return -current; }
    }