/**
* Force the plot to have an aspect ratio of 1 by forcing the axes to have the same range. If the
* range of the axes are very different some extremely odd things can occur. All axes are forced
* to have the same range, so more than 2 axis is pointless.
*/
protected Rectangle ForceSquare(Graphics g, Rectangle r) {
Axis a;
Rectangle dr;
int x = r.x;
int y = r.y;
int width = r.width;
int height = r.height;
double xmin;
double xmax;
double ymin;
double ymax;
double xrange = 0.0;
double yrange = 0.0;
double range;
double aspect;
if (dataset == null | dataset.isEmpty()) return r;
/*
** Force all the axis to have the same range. This of course
** means that anything other than one xaxis and one yaxis
** is a bit pointless.
*/
for (int i = 0; i < axis.size(); i++) {
a = (Axis) axis.elementAt(i);
range = a.maximum - a.minimum;
if (a.isVertical()) {
yrange = Math.max(range, yrange);
} else {
xrange = Math.max(range, xrange);
}
}
if (xrange <= 0 | yrange <= 0) return r;
if (xrange > yrange) range = xrange;
else range = yrange;
for (int i = 0; i < axis.size(); i++) {
a = (Axis) axis.elementAt(i);
a.maximum = a.minimum + range;
}
/*
** Get the new data rectangle
*/
dr = getDataRectangle(g, r);
/*
** Modify the data rectangle so that it is square.
*/
if (dr.width > dr.height) {
x += (dr.width - dr.height) / 2.0;
width -= dr.width - dr.height;
} else {
y += (dr.height - dr.width) / 2.0;
height -= dr.height - dr.width;
}
return new Rectangle(x, y, width, height);
}
