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package org.singinst.uf.model;
import java.util.ArrayList;
import java.util.List;
import org.singinst.uf.math.InvertableFunction;
import org.singinst.uf.presenter.AxisSample;
import org.singinst.uf.presenter.LineBounds;
public class LogBounds extends LineBounds {
private final double majorTickSpace;
private final double minorTickSpace;
private final double zero;
private final double firstMajorTick;
private final InvertableFunction toDisplay;
public LogBounds(double firstMajorTick, double zero, double first, double second, double majorTickSpace, double minorTickSpace) {
super(first, second);
this.firstMajorTick = firstMajorTick;
this.zero = zero;
this.majorTickSpace = majorTickSpace;
this.minorTickSpace = minorTickSpace;
toDisplay = new PowerFunction(zero);
}
@Override
public Iterable<AxisSample> getAxisSamples(boolean majorTick) {
List<AxisSample> samples = new ArrayList<AxisSample>();
double space;
double display;
if (majorTick) {
space = majorTickSpace;
display = firstMajorTick - zero;
} else {
space = minorTickSpace;
display = Math.pow(10, getFirst());
display += (minorTickSpace - display % minorTickSpace);
}
while (display <= Math.pow(10, getSecond())) {
if (majorTick) {
if (zero + display == 2050) {
addSample(samples, 2010 - zero);
addSample(samples, 2030 - zero);
}
if ((zero + display != 2350) && (zero + display != 2450)) {
addSample(samples, display);
}
} else {
samples.add(new AxisSample(Math.log10(display)));
}
display += space;
}
return samples;
}
@Override
public InvertableFunction toDisplay() {
return toDisplay;
}
@Override
public String userFormat(double value) {
return "" + Math.round(toDisplay.apply(value));
}
@Override
public double constrain(double rounded) {
double bounded = super.constrain(rounded);
double display = toDisplay.apply(bounded);
double intDisplay = Math.round(display);
return toDisplay.invert(intDisplay);
}
private boolean addSample(List<AxisSample> samples, double display) {
return samples.add(new AxisSample(Math.log10(display), getCanvasString(zero + display)));
}
}
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