/**
* Return the number of corners in the specified stroke. This calls numCorners with threshold
* values either initialized in the constructor or specified by the user.
*
* <p>First check to see if this feature already exists in the stroke's property table (access
* using PROPERTY_KEY). If so, return that value (cast to double). Otherwise call numCorners to
* compute and cache the result in the table.
*
* <p>
*/
public double apply(TimedStroke s) {
Integer num = (Integer) s.getProperty(PROPERTY_KEY);
if (num == null) {
int val = numCorners(s, _threshDot, _threshMagRatio, _threshRelaxedDot);
s.setProperty(PROPERTY_KEY, new Integer(val));
return (double) val;
} else {
return num.doubleValue();
}
}
