topical media & game development
student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance.ax
student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance.ax
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/*
* PAPER ON ERVIS NPAPER ISION PE IS ON PERVI IO APER SI PA
* AP VI ONPA RV IO PA SI PA ER SI NP PE ON AP VI ION AP
* PERVI ON PE VISIO APER IONPA RV IO PA RVIS NP PE IS ONPAPE
* ER NPAPER IS PE ON PE ISIO AP IO PA ER SI NP PER
* RV PA RV SI ERVISI NP ER IO PE VISIO AP VISI PA RV3D
* ______________________________________________________________________
* papervision3d.org � blog.papervision3d.org � osflash.org/papervision3d
*/
/*
* Copyright 2006 (c) Carlos Ulloa Matesanz, noventaynueve.com.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
// ______________________________________________________________________
// Vertex3D
package org.papervision3d.core.geom.renderables
{
import org.papervision3d.core.math.Number3D;
The @ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance constructor lets you create 2D projected vertices.
public class @ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance
{
An Number that sets the X coordinate of a object relative to the scene coordinate system.
public var x :Number;
An Number that sets the Y coordinate of a object relative to the scene coordinates.
public var y :Number;
An Number that sets the Z coordinate of a object relative to the scene coordinates.
public var z :Number;
An object that contains user defined properties.
public var extra :Object;
[internal-use] A Boolean value that indicates whether the vertex is visible after projection.
If false, it indicates that the vertex is behind the camera plane.
public var visible :Boolean;
//To be docced
public var normal:Number3D;
private var persp:Number = 0;
Creates a new Vertex2D object whose three-dimensional values are specified by the x, y and z parameters.
@param x The horizontal coordinate value. The default value is zero.
@param y The vertical coordinate value. The default value is zero.
@param z The depth coordinate value. The default value is zero.
public function @ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance( x:Number=0, y:Number=0, z:Number=0 )
{
this.x = x;
this.y = y;
this.z = z;
this.visible = false;
this.normal = new Number3D();
}
public function clone():@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance
{
var clone:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance = new @ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance(x,y,z);
clone.visible = visible;
clone.extra = extra; //TODO : FIX CLONING OF THE EXTRA OBJECT.
return clone;
}
public static function dot(v0:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance, v1:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance):Number
{
return (v0.x * v1.x + v0.y * v1.y);
}
public static function cross(v0:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance,v1:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance):Number
{
return (v0.x*v1.y-v1.x*v0.y);
}
public static function sub( v0:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance, v1:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance ):@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance
{
return new @ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance
(
v1.x - v0.x,
v1.y - v0.y
);
}
public static function subTo(v0:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance, v1:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance, o:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance):void
{
o.x = v1.x - v0.x;
o.y = v1.y - v0.y;
}
public function deperspective(focus:Number):Vertex3D
{
persp = 1 + z / focus;
return new Vertex3D(x * persp, y * persp, z);
}
Calculates the squared distance between two screen vertex objects.
@param b The screen vertex object to use for the calcation.
@return The squared scalar value of the vector between this and the given scren vertex.
public function distanceSqr(b:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance):Number
{
return (x - b.x)*(x - b.x) + (y - b.y)*(y - b.y);
}
Calculates the distance between two screen vertex objects.
@param b The second screen vertex object to use for the calcation.
@return The scalar value of the vector between this and the given screen vertex.
public function distance(b:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance):Number
{
return Math.sqrt((x - b.x)*(x - b.x) + (y - b.y)*(y - b.y));
}
public static function median(a:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance, b:@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance, focus:Number):@ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance
{
var mz:Number = (a.z + b.z) / 2;
var faz:Number = focus + a.z;
var fbz:Number = focus + b.z;
var ifmz:Number = 1 / (focus + mz) / 2;
return new @ax-student-ar-org-papervision3d-core-geom-renderables-Vertex3DInstance((a.x*faz + b.x*fbz)*ifmz, (a.y*faz + b.y*fbz)*ifmz, mz);
}
}
}
(C) Æliens
04/09/2009
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.
