Rect class
A Rect describes a rectangular two-dimensional area as a top-left point (x and y values) and a size (width and height values).
Use the static functions Rect.parse and Rect.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 Rect.parse method also allocates a new object. The #center, #position, and #size properties all allocate and return 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(
) → Rect -
allocAt(
num x, num y, num w, num h) → Rect -
contains(
num rx, num ry, num rw, num rh, num x, num y, [num? w, num? h]) → bool - This static function indicates whether a Rect contains the given Point/Rect.
-
free(
Rect temp) → void -
intersects(
num rx, num ry, num rw, num rh, num x, num y, num w, num h) → bool - This static function indicates whether a Rect partly or wholly overlaps the given Rect.
-
intersectsLineSegment(
num x, num y, num w, num h, num p1x, num p1y, num p2x, num p2y) → bool - This static function is true if a rectangular area is intersected by a finite straight line segment.
-
parse(
String str) → Rect - This static function can be used to read in a Rect from a string that was produced by Rect.stringify.
-
stringify(
Rect val) → String - This static function can be used to write out a Rect as a string that can be read by Rect.parse.