Packageaway3d.core.draw
Classpublic final class ScreenVertex
InheritanceScreenVertex Inheritance flash.geom.Vector3D

representation of a 3d vertex resolved to the view.


Public Properties
 PropertyDefined By
  vectorInstructionType : String = L
ScreenVertex
  viewTimer : int
ScreenVertex
  visible : Boolean
Indicates whether the vertex is visible after projection.
ScreenVertex
  vx : Number
The view x position of the vertex in the view.
ScreenVertex
  vy : Number
The view y position of the vertex in the view.
ScreenVertex
Public Methods
 MethodDefined By
  
ScreenVertex(x:Number = 0, y:Number = 0, z:Number = 0)
Creates a new PrimitiveQuadrantTreeNode object.
ScreenVertex
  
distance(b:ScreenVertex):Number
Calculates the distance between two screen vertex objects.
ScreenVertex
  
distanceSqr(ax:Number, ay:Number, bx:Number, by:Number):Number
[static] Calculates the squared distance between two screen vertex objects.
ScreenVertex
  
distortSqr(b:ScreenVertex, focus:Number):Number
Calculates affine distortion present at the midpoint between two screen vertex objects.
ScreenVertex
  
median(aindex:uint, bindex:uint, screenVertices:Vector.<Number>, screenIndices:Vector.<int>, uvts:Vector.<Number>):void
[static] Creates the median screen vertex between the two given screen vertex objects.
ScreenVertex
  
toString():String
[override] Used to trace the values of a vertex.
ScreenVertex
  
weighted(a:ScreenVertex, b:ScreenVertex, aw:Number, bw:Number, focus:Number):ScreenVertex
[static] Returns a screen vertex with values given by a weighted mean calculation.
ScreenVertex
Property Detail
vectorInstructionTypeproperty
public var vectorInstructionType:String = L

viewTimerproperty 
public var viewTimer:int

visibleproperty 
public var visible:Boolean

Indicates whether the vertex is visible after projection.

vxproperty 
public var vx:Number

The view x position of the vertex in the view.

vyproperty 
public var vy:Number

The view y position of the vertex in the view.

Constructor Detail
ScreenVertex()Constructor
public function ScreenVertex(x:Number = 0, y:Number = 0, z:Number = 0)

Creates a new PrimitiveQuadrantTreeNode object.

Parameters
x:Number (default = 0) — [optional] The x position of the vertex in the view. Defaults to 0.
 
y:Number (default = 0) — [optional] The y position of the vertex in the view. Defaults to 0.
 
z:Number (default = 0) — [optional] The z position of the vertex in the view. Defaults to 0.
####INIT####
Method Detail
distance()method
public function distance(b:ScreenVertex):Number

Calculates the distance between two screen vertex objects.

Parameters

b:ScreenVertex — The second screen vertex object to use for the calcation.

Returns
Number — The scalar value of the vector between this and the given screen vertex.
distanceSqr()method 
public static function distanceSqr(ax:Number, ay:Number, bx:Number, by:Number):Number

Calculates the squared distance between two screen vertex objects.

Parameters

ax:Number — The screen vertex object to use for the calcation.
 
ay:Number
 
bx:Number
 
by:Number

Returns
Number — The squared scalar value of the vector between this and the given scren vertex.
distortSqr()method 
public function distortSqr(b:ScreenVertex, focus:Number):Number

Calculates affine distortion present at the midpoint between two screen vertex objects.

Parameters

b:ScreenVertex — The second screen vertex object to use for the calcation.
 
focus:Number — The focus value used for the distortion calulations.

Returns
Number — The scalar value of the vector between this and the given screen vertex.
median()method 
public static function median(aindex:uint, bindex:uint, screenVertices:Vector.<Number>, screenIndices:Vector.<int>, uvts:Vector.<Number>):void

Creates the median screen vertex between the two given screen vertex objects.

Parameters

aindex:uint — The index of the first screen vertex to use for the calculation.
 
bindex:uint — The index of the second screen vertex to use for the calculation.
 
screenVertices:Vector.<Number> — The Array of screen vertices to use for the calculation.
 
screenIndices:Vector.<int> — The Array of screen indices to use for the calculation.
 
uvts:Vector.<Number> — The focus value used for the median calulations.

toString()method 
override public function toString():String

Used to trace the values of a vertex.

Returns
String — A string representation of the vertex object.
weighted()method 
public static function weighted(a:ScreenVertex, b:ScreenVertex, aw:Number, bw:Number, focus:Number):ScreenVertex

Returns a screen vertex with values given by a weighted mean calculation.

Parameters

a:ScreenVertex — The first screen vertex to use for the calculation.
 
b:ScreenVertex — The second screen vertex to use for the calculation.
 
aw:Number — The first screen vertex weighting.
 
bw:Number — The second screen vertex weighting.
 
focus:Number — The focus value used for the weighting calulations.

Returns
ScreenVertex — The resulting screen vertex.




Tue Jun 7 2011, 11:27 PM +01:00