/** TODO: JAVADOC */
private void drawl(Complex x, Complex y, Complex X, Complex Y, boolean fix) {
assert y != null;
assert Y != null;
assert !x.isNaN();
assert !X.isNaN();
if (y.isNaN() || Y.isNaN()) return;
if (!fix
&& grapher.components().type().equals(West.Math.Display.GraphComponents.GraphTypes.POLAR)) {
assert y.isOnlyReal() : y + " can only be real when graphing!";
assert Y.isOnlyReal() : Y + " can only be real when graphing!";
Complex r = y;
y = y.mult(x.sin()); // y is r, x is theta
x = r.mult(x.cos()); // y is r, x is theta
r = Y;
Y = Y.mult(X.sin()); // Y is r, X is theta
X = r.mult(X.cos()); // Y is r, X is theta
}
if (!fix
&& grapher.components().type().equals(West.Math.Display.GraphComponents.GraphTypes.IMAG)) {
assert false;
}
double[] xy = fix(x.aIsOnlyReal().real(), y.aIsOnlyReal().real());
double[] XY = fix(X.aIsOnlyReal().real(), Y.aIsOnlyReal().real());
drawer.drawLine((int) xy[0], (int) xy[1], (int) XY[0], (int) XY[1]); // width, height
}
