public void updateTrace(int dx) {
for (int i = 0; i < getNumFns(); i += 1) {
traceLoc += dx;
if (traceLoc > graph.getXMax()) traceLoc = (int) graph.getXMax();
else if (traceLoc < graph.getXMin()) traceLoc = (int) graph.getXMin();
}
}
public void plotFns(float[][] fnPts, int nFns) {
for (int i = 0; i < nFns; i += 1) {
if (!graphCalcs[i].empty()) {
/*
Log.v ("plotFns",Float.toString(graph.getXMax())+" "+
Float.toString(graph.getYMax())+" "+Float.toString(graph.getXLeft ())+
" "+Float.toString(graph.getXRight ())+" "+
Float.toString(graph.getYBot ())+" "+Float.toString(graph.getYTop ()));
*/
graphCalcs[i].graphFn(
fnPts[i],
graph.getXLeft(),
graph.getXRight(),
graph.getYBot(),
graph.getYTop(),
graph.getXMin(),
graph.getXMax(),
graph.getYMin(),
graph.getYMax(),
graph.getXUnitLen());
/*
for (int j=0;j<N_FN_PTS*4;j+=4) {
Log.v ("plotFns", Float.toString(fnPts[i][j])+","+Float.toString(fnPts[i][j+1])+
" "+ Float.toString(fnPts[i][j+2])+","+Float.toString(fnPts[i][j+3]));
}
*/
} else {
clearArr(fnPts[i]);
}
}
}
public void calcZeros(ArrayAdapter<String> zerosArr, int nFns) {
int n;
String title;
for (int i = 0; i < nFns; i += 1) {
if (!graphCalcs[i].empty()) {
title = "Fn" + Integer.toString(i + 1) + "(x):";
n =
graphCalcs[i].calcZeros(
zeros[i],
graph.getXLeft(),
graph.getXRight(),
graph.getYBot(),
graph.getYTop(),
graph.getXMin(),
graph.getXMax(),
graph.getYMin(),
graph.getYMax(),
graph.getXUnitLen());
// Log.v ("calcZeros",Integer.toString(n));
if (n == 0) title += " None";
zerosArr.add(title);
// Convert x values of zeros to strings
for (int k = 0; k < n; k += 1) {
float num = zeros[i][k];
if ((num > -0.001 && num < 0) || (num < 0.001 && num > 0)) num = 0;
String numStr = ComplexNumber.roundStr(num, 3);
zerosArr.add(" x = " + numStr);
}
}
}
}
public int getYGraphPt(float val) {
return (int) graph.getYMax()
- graphCalcs[0].realToGraph(
val, graph.getYBot(), graph.getYTop(), graph.getYMin(), graph.getYMax());
}
public void initTrace() {
for (int i = 0; i < getNumFns(); i += 1) {
traceLoc = (int) ((graph.getXMin() + graph.getXMax()) / 2);
}
}
