Sandy Select Box Ray
...
@author Darknet
Credit by: lovexylitol
-Converting 2D to 3D coordinates
Information: Ray Casting. This will move along x and z axis. y = 0.
Note this is just a test. Just play with the settings.
Cam has z = -1
selectionplane.enableForcedDepth = true;
selectionplane.depth = -1;
/**
* Copyright darknet ( http://wonderfl.net/user/darknet )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/zlW8
*/
package
{
import flash.display.Sprite;
import flash.events.Event;
import flash.events.KeyboardEvent;
import flash.events.MouseEvent;
import sandy.core.data.Matrix4;
import sandy.core.data.Point3D;
import sandy.core.scenegraph.Camera3D;
import sandy.core.scenegraph.Group;
import sandy.core.scenegraph.Shape3D;
import sandy.events.Shape3DEvent;
import sandy.materials.Appearance;
import sandy.materials.attributes.LightAttributes;
import sandy.materials.attributes.LineAttributes;
import sandy.materials.attributes.MaterialAttributes;
import sandy.materials.ColorMaterial;
import sandy.materials.Material;
import sandy.math.Matrix4Math;
import sandy.core.Scene3D;
import sandy.primitive.Box;
import sandy.primitive.Plane3D;
import sandy.view.*;
/**
* ...
* @author Darknet
*
* Credit by: lovexylitol
* -Converting 2D to 3D coordinates
*
* Information: Ray Casting. This will move along x and z axis. y = 0.
* Note this is just a test. Just play with the settings.
* Cam has z = -1
* selectionplane.enableForcedDepth = true;
* selectionplane.depth = -1;
*
*/
[SWF(width="464", height="464", backgroundColor="#FFFFFF", frameRate="30")]
public class SandyRayPlane6 extends Sprite{
public var scene:Scene3D;
public var camera:Camera3D
public var g:Group = new Group("myGroup");
public var box:Box = new Box('box');
public var ground:Shape3D = new Plane3D('ground', 256, 256, 10, 10, Plane3D.ZX_ALIGNED, 'quad');
public var HEIGHT:Number = 464; //Screen Size
public var WIDTH:Number = 464; //Screen Size
public var selectionplane:Shape3D = new Plane3D('selectplane', 32, 32, 1, 1, Plane3D.ZX_ALIGNED, 'quad');
public var startpoint:Point3D = new Point3D();
public var endpoint:Point3D = new Point3D();
public function SandyRayPlane6(){
camera = new Camera3D(464,464);
camera.far = 500;
camera.near = 0;
camera.y = 500;
//camera.z = 500;
camera.z = -500;
camera.lookAt(0, 0, 0);
var root:Group = createScene();
scene = new Scene3D( "scene", this, camera, root );
addEventListener( Event.ENTER_FRAME, enterFrameHandler );
stage.addEventListener(MouseEvent.MOUSE_MOVE, frameMouseMove);
stage.addEventListener(KeyboardEvent.KEY_DOWN, addKey, false, 0, true);
stage.addEventListener(MouseEvent.MOUSE_DOWN, select_down);
stage.addEventListener(MouseEvent.MOUSE_UP, select_out);
var materialAttr:MaterialAttributes = new MaterialAttributes(
new LineAttributes( 0.5, 0x2111BB, 0.4 ),
new LightAttributes( true, 0.1));
var material:Material = new ColorMaterial( 0x999999, 1, materialAttr );
var app:Appearance = new Appearance( material );
material = new ColorMaterial( 0xFFCC33, 1, materialAttr );
app = new Appearance( material );
ground.appearance = app;
ground.useSingleContainer = false;
selectionplane.enableForcedDepth = true;
selectionplane.depth = -1;
}
public function select_down(e:Event):void {
startpoint = S2W(mouseX, mouseY);
stage.addEventListener(MouseEvent.MOUSE_OVER, select_over);
}
public function select_over(e:Event):void {
endpoint= S2W(mouseX, mouseY);
var minpoint:Point3D = new Point3D();
var maxpoint:Point3D = new Point3D();
if (startpoint.z < endpoint.z) {
minpoint.z = startpoint.z;
maxpoint.z = endpoint.z;
}else {
minpoint.z = endpoint.z
maxpoint.z = startpoint.z;
}
if (startpoint.x < endpoint.x) {
minpoint.x = startpoint.x;
maxpoint.x = endpoint.x;
}else {
minpoint.x = endpoint.x;
maxpoint.x = startpoint.x;
}
selectionplane.geometry.aVertex[0].x = minpoint.x;
selectionplane.geometry.aVertex[0].z = minpoint.z;
selectionplane.geometry.aVertex[1].x = maxpoint.x;
selectionplane.geometry.aVertex[1].z = minpoint.z;
selectionplane.geometry.aVertex[2].x = minpoint.x;
selectionplane.geometry.aVertex[2].z = maxpoint.z;
selectionplane.geometry.aVertex[3].x = maxpoint.x;
selectionplane.geometry.aVertex[3].z = maxpoint.z;
selectionplane.changed = true;//this will tell the object is change
}
public function select_out(e:Event):void {
stage.removeEventListener(MouseEvent.MOUSE_OVER, select_over);
}
public function frameMouseMove(e:MouseEvent):void {
var bp:Point3D = S2W(mouseX, mouseY);
box.x = bp.x;
box.y = bp.y;
box.z = bp.z;
}
public function S2W(sx:Number, sy:Number):Point3D {
var Mcmm:Matrix4 = camera.modelMatrix;
var NEAR:Number = 1;
var FAR:Number = 500;
var z1:Number = NEAR;
var x1:Number = (sx - WIDTH/2) * z1 / camera.focalLength;
var y1:Number = ((HEIGHT / 2 - sy) * z1 / camera.focalLength);
var z2:Number = FAR;
var x2:Number = (sx - WIDTH/2) * z2 / camera.focalLength;
var y2:Number = ((HEIGHT / 2 - sy) * z2 / camera.focalLength);
var p1:Point3D = new Point3D(x1,y1,z1);
var p2:Point3D = new Point3D(x2,y2,z2);
var rp1:Point3D = Matrix4Math.transform(Mcmm,p1);
var rp2:Point3D = Matrix4Math.transform(Mcmm,p2);
var t:Number = rp2.y / (rp2.y - rp1.y);
var Px:Number = (rp1.x-rp2.x)*t+rp2.x;
var Pz:Number = (rp1.z - rp2.z) * t + rp2.z;
return new Point3D(Px,0,Pz);
}
private function enterFrameHandler(event:Event) : void {
scene.render();
}
private function createScene():Group {
g.addChild(box);
g.addChild(ground);
g.addChild(selectionplane);
return g;
}
public function addKey(e:KeyboardEvent):void {
if (e.keyCode == 39) {//right
camera.x+=10;
}
if (e.keyCode == 37) {//left
camera.x-=10;
}
}
}
}