Point class
A Point represents an x- and y-coordinate pair in two-dimensional space.
Use the static functions Point.parse and Point.stringify to convert to and from a standard string representation that is independent of the current locale.
When an instance of this class is the value of a property of a GraphObject class or Diagram or CommandHandler or a Tool class, you should treat the object as if it were frozen or read-only -- you cannot modify its properties. This allows the property to return a value without allocating a new instance. If you need to do your own calculations with the value, call #copy to make a new instance with the same values that you can modify.
Many methods modify the object's properties and then return a reference to "this" object. The only instance method to allocate a new object is the #copy method. The static Point.parse method also allocates a new object.
The "Debug" implementation of this class is significantly slower than the "Release" implementation, mostly due to additional error checking.
You cannot inherit from this class.
- Available Extensions
- Annotations
-
- @JS()
- @staticInterop
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
alloc(
) → Point -
allocAt(
num x, num y) → Point -
compareWithLineSegment(
num a1x, num a1y, num a2x, num a2y, num px, num py) → num - This static function compares a point with a finite line segment.
-
direction(
num px, num py, num qx, num qy) → num - This static function returns the angle in degrees of the line from point P to point Q.
-
distanceLineSegmentSquared(
num px, num py, num ax, num ay, num bx, num by) → num - This static function returns the square of the distance from the point P to the finite line segment from point A to point B.
-
distanceSquared(
num px, num py, num qx, num qy) → num - This static function returns the square of the distance from the point P to the point Q.
-
free(
Point temp) → void -
intersectingLineSegments(
num a1x, num a1y, num a2x, num a2y, num b1x, num b1y, num b2x, num b2y) → bool - This static function is true if two finite straight line segments intersect each other.
-
parse(
String str) → Point - This static function can be used to read in a Point from a string that was produced by Point.stringify.
-
stringify(
Point val) → String - This static function can be used to write out a Point as a string that can be read by Point.parse.