SiMS
sims.dynamics

class Rectangle
[source: sims/dynamics/Rectangle.scala]
case class Rectangle(val halfWidth : Double, val halfHeight : Double, val density : Double)
extends Shape with ConvexPolygon with scala.Product
A rectangle is a polygon.
Parameters
halfWidth - this rectangle's half width
halfHeight - this rectangle's half height
density - density of this rectangle
Direct Known Subclasses:
GraphicalRectangle
Value Summary
val I : Double
Moment of inertia for a rotation about this shape's COM.
val volume : Double
Volume. The volume is actually equivalent to this shape's area (SiMS is in 2D) and is used with this shape's density to calculate its mass.
Values and Variables inherited from Shape
uid, collidable, restitution, friction, pos, rotation, rotation0, refLocalPos, transientShapes
Method Summary
override def equals (arg0 : Any) : Boolean
This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.
def halfDiags : scala.Array[Vector2D]
Returns the vectors from the center to the vertices of this rectangle. The first vertex is the upper-right vertex at a rotation of 0. Vertices are ordered counter-clockwise.
override def hashCode : Int
Returns a hash code value for the object.
override def productArity : Int
override def productElement (arg0 : Int) : Any
override def productPrefix : java.lang.String
override def toString : java.lang.String
Returns a string representation of the object.
def vertices : scala.Array[Vector2D]
Returns the position vectors of this rectangle's vertices. The first vertex is the upper-right vertex at a rotation of 0. Vertices are ordered counter-clockwise.
Methods inherited from ConvexPolygon
sides, project, AABB, contains
Methods inherited from Shape
mass, body, asBody, ~, ~
Methods inherited from AnyRef
getClass, clone, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized
Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf
Value Details
val volume : Double
Volume. The volume is actually equivalent to this shape's area (SiMS is in 2D) and is used with this shape's density to calculate its mass.
Overrides
Shape.volume
val I : Double
Moment of inertia for a rotation about this shape's COM.
Overrides
Shape.I
Method Details
def halfDiags : scala.Array[Vector2D]
Returns the vectors from the center to the vertices of this rectangle. The first vertex is the upper-right vertex at a rotation of 0. Vertices are ordered counter-clockwise.
def vertices : scala.Array[Vector2D]
Returns the position vectors of this rectangle's vertices. The first vertex is the upper-right vertex at a rotation of 0. Vertices are ordered counter-clockwise.
Overrides
ConvexPolygon.vertices
override def hashCode : Int
Returns a hash code value for the object.

The default hashing algorithm is platform dependent. Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.

Returns
the hash code value for the object.

override def toString : java.lang.String
Returns a string representation of the object.

The default representation is platform dependent.

Returns
a string representation of the object.

override def equals(arg0 : Any) : Boolean
This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.

The default implementations of this method is an equivalence relation:

  • It is reflexive: for any instance x of type Any, x.equals(x) should return true.
  • It is symmetric: for any instances x and y of type Any, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any instances x, y, and z of type AnyRef if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.

If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is often necessary to override hashCode to ensure that objects that are "equal" (o1.equals(o2) returns true) hash to the same Int (o1.hashCode.equals(o2.hashCode)).

Parameters
arg0 - the object to compare against this object for equality.
Returns
true if the receiver object is equivalent to the argument; false otherwise.

override def productPrefix : java.lang.String
Overrides
scala.Product.scala.Product.productPrefix
override def productArity : Int
Overrides
scala.Product.scala.Product.productArity
override def productElement(arg0 : Int) : Any
Overrides
scala.Product.scala.Product.productElement
SiMS