/** converts the mouse's y into the corresponding value in the function's range */
protected double realY(int mouseY) {
if (fvar.isConstant()) return fvar.getYmax();
int h = getHeight();
double ymax = fvar.getYmax();
return ymax
+ (fvar.getYmin() - ymax) * (mouseY - h * (1 - croppingFactor) * 0.5) / h / croppingFactor;
}
/** converts some y in the fun's range into a mouse y coordinate */
protected int getY(double y) {
int h = getHeight();
if (fvar.isConstant()) return (int) h / 2;
else {
double ymax = fvar.getYmax();
return (int)
((h * (1 - croppingFactor) / 2.0)
+ h * croppingFactor * (y - ymax) / (fvar.getYmin() - ymax));
}
}
