/*
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;
// contributed by Edward Calver
class AMElm extends CircuitElm {
static final int FLAG_COS = 2;
double carrierfreq,signalfreq, maxVoltage, freqTimeZero;
public AMElm(int xx, int yy) {
super(xx, yy);
maxVoltage = 5;
carrierfreq = 1000;
signalfreq=40;
reset();
}
public AMElm(int xa, int ya, int xb, int yb, int f,
StringTokenizer st) {
super(xa, ya, xb, yb, f);
carrierfreq = new Double(st.nextToken()).doubleValue();
signalfreq= new Double(st.nextToken()).doubleValue();
maxVoltage = new Double(st.nextToken()).doubleValue();
if ((flags & FLAG_COS) != 0) {
flags &= ~FLAG_COS;
}
reset();
}
int getDumpType() { return 200; }
String dump() {
return super.dump() + " " +carrierfreq+" " + signalfreq + " " +maxVoltage;
}
/*void setCurrent(double c) {
current = c;
System.out.print("v current set to " + c + "\n");
}*/
void reset() {
freqTimeZero = 0;
curcount = 0;
}
int getPostCount() { return 1; }
void stamp() {
sim.stampVoltageSource(0, nodes[0], voltSource);
}
void doStep() {
sim.updateVoltageSource(0, nodes[0], voltSource, getVoltage());
}
double getVoltage() {
double w = 2*pi*(sim.t-freqTimeZero);
return ((Math.sin(w*signalfreq)+1)/2)*Math.sin(w*carrierfreq)*maxVoltage;
}
final int circleSize = 17;
void draw(Graphics g) {
setBbox(point1, point2, circleSize);
setVoltageColor(g, volts[0]);
drawThickLine(g, point1, lead1);
Font f = new Font("SansSerif", 0, 12);
g.setFont(f);
g.setColor(needsHighlight() ? selectColor : whiteColor);
setPowerColor(g, false);
double v = getVoltage();
String s = "AM";
drawCenteredText(g, s, x2, y2, true);
drawWaveform(g, point2);
drawPosts(g);
curcount = updateDotCount(-current, curcount);
if (sim.dragElm != this)
drawDots(g, point1, lead1, curcount);
}
void drawWaveform(Graphics g, Point center) {
g.setColor(needsHighlight() ? selectColor : Color.gray);
setPowerColor(g, false);
int xc = center.x; int yc = center.y;
drawThickCircle(g, xc, yc, circleSize);
int wl = 8;
adjustBbox(xc-circleSize, yc-circleSize,
xc+circleSize, yc+circleSize);
}
void setPoints() {
super.setPoints();
lead1 = interpPoint(point1, point2, 1-circleSize/dn);
}
double getVoltageDiff() { return volts[0]; }
boolean hasGroundConnection(int n1) { return true; }
int getVoltageSourceCount() {
return 1;
}
double getPower() { return -getVoltageDiff()*current; }
void getInfo(String arr[]) {
arr[0] = "AM Source";
arr[1] = "I = " + getCurrentText(getCurrent());
arr[2] = "V = " +
getVoltageText(getVoltageDiff());
arr[3] = "cf = " + getUnitText(carrierfreq, "Hz");
arr[4] = "sf = " + getUnitText(signalfreq, "Hz");
arr[5] = "Vmax = " + getVoltageText(maxVoltage);
}
public EditInfo getEditInfo(int n) {
if (n == 0)
return new EditInfo("Max Voltage", maxVoltage, -20, 20);
if (n == 1)
return new EditInfo("Carrier Frequency (Hz)", carrierfreq, 4, 500);
if (n == 2)
return new EditInfo("Signal Frequency (Hz)", signalfreq, 4, 500);
return null;
}
public void setEditValue(int n, EditInfo ei) {
if (n == 0)
maxVoltage = ei.value;
if (n == 1)
carrierfreq = ei.value;
if (n == 2)
signalfreq=ei.value;
}
}