toString method
A string representation of this object.
Some classes have a default textual representation,
often paired with a static parse
function (like int.parse).
These classes will provide the textual representation as
their string representation.
Other classes have no meaningful textual representation
that a program will care about.
Such classes will typically override toString
to provide
useful information when inspecting the object,
mainly for debugging or logging.
Implementation
String toString() {
double angle = math.atan2(dy, dx);
String className = runtimeType.toString();
int lastDotPos = className.lastIndexOf('.');
String name = className.substring(lastDotPos + 1);
return " $name: $p0 - $p1 $quadrant: $angle $label";
}