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package org.singinst.uf.presenter;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import org.singinst.uf.math.MathUtil;
import org.singinst.uf.math.SimplePoint;
public abstract class DraggableLine extends ScalarValuePointList implements MouseDragListener {
private final int selectionPriority;
public DraggableLine(int selectionPriority, SimpleStyle style) {
super(style);
this.selectionPriority = selectionPriority;
}
public void setLine(SimpleLine line) {
setHypothesisPoints(Arrays.asList(line.p1, line.p2));
}
public int getSelectionPriority() {
return selectionPriority;
}
@Override
public void draw(GraphCanvas canvas) {
super.draw(canvas);
canvas.addMouseDragListener(this);
}
@Override
public void setHypothesisPoints(List<SimplePoint> hypothesisPoints) {
if (hypothesisPoints.size() != 2) {
throw new IllegalArgumentException();
}
super.setHypothesisPoints(hypothesisPoints);
}
public abstract void dragTo(SimplePoint point);
public int mouseDown(SimplePoint point) {
double y = MathUtil.interpolate(getHypothesisPoints().get(0), getHypothesisPoints().get(1), point.x);
if (Math.abs(y - point.y) < 0.5) {
return selectionPriority;
} else {
return 0;
}
}
public static final Comparator<DraggableLine> PRIORITY_COMPARATOR = new Comparator<DraggableLine>() {
public int compare(DraggableLine o1, DraggableLine o2) {
return ((Integer)o1.getSelectionPriority()).compareTo(o2.getSelectionPriority());
}
};
}
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