dragging a 3d object in alternativa3d
/**
* Copyright davidejones ( http://wonderfl.net/user/davidejones )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/scgK
*/
package
{
import alternativa.engine3d.core.events.MouseEvent3D;
import alternativa.engine3d.core.RayIntersectionData;
import alternativa.engine3d.primitives.Plane;
import flash.display.Sprite;
import flash.events.Event;
import flash.display.Stage3D;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import alternativa.engine3d.primitives.Box;
import alternativa.engine3d.core.Resource;
import alternativa.engine3d.controllers.SimpleObjectController;
import alternativa.engine3d.core.Camera3D;
import alternativa.engine3d.core.Object3D;
import alternativa.engine3d.core.View;
import alternativa.engine3d.materials.FillMaterial;
import flash.events.MouseEvent;
import flash.geom.Vector3D;
/**
* ...
* @author David E Jones
*/
public class Main extends Sprite
{
private var scene:Object3D = new Object3D();
private var camera:Camera3D;
private var controller:SimpleObjectController;
private var stage3D:Stage3D;
private var box:Box;
private var boxSelected:Boolean = false;
private var startPoint:Vector3D;
public function Main():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
camera = new Camera3D(1, 100000);
camera.x = 0;
camera.y = 500;
camera.z = -800;
camera.view = new View(stage.stageWidth, stage.stageHeight, false, 0, 0, 4);
camera.view.backgroundColor = 0x000000;
addChild(camera.view);
addChild(camera.diagram);
controller = new SimpleObjectController(stage, camera, 200);
controller.lookAt(new Vector3D(0,0,0));
scene.addChild(camera);
stage3D = stage.stage3Ds[0];
stage3D.addEventListener(Event.CONTEXT3D_CREATE, onContextCreate);
stage3D.requestContext3D();
}
private function onContextCreate(e:Event):void {
stage3D.removeEventListener(Event.CONTEXT3D_CREATE, onContextCreate);
var plane:Plane = new Plane(1500, 1500, 1, 1);
plane.setMaterialToAllSurfaces(new FillMaterial( 0x00FF00 ));
plane.rotationX = 90 * Math.PI / 180;
plane.y = -50;
scene.addChild(plane);
uploadResources(plane.getResources(true));
box = new Box(100, 100, 100, 1, 1, 1, false, null);
var material:FillMaterial = new FillMaterial( 0xFF0000 );
box.setMaterialToAllSurfaces(material);
scene.addChild(box);
uploadResources(box.getResources(true));
box.addEventListener(MouseEvent3D.MOUSE_DOWN, onMouseDown);
stage.addEventListener(Event.ENTER_FRAME, onEnterFrame);
stage.addEventListener(Event.RESIZE, onResize);
onResize();
}
private function onMouseDown(e:MouseEvent3D):void
{
stage.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
stage.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);
var object:Object3D = e.target as Object3D;
var origin:Vector3D = new Vector3D();
var direction:Vector3D = new Vector3D();
camera.calculateRay(origin, direction, stage.mouseX, stage.mouseY);
var data:RayIntersectionData = object.intersectRay(origin, direction);
if (data != null) {
startPoint = data.point;
}
}
private function onMouseUp(e:MouseEvent):void
{
stage.removeEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
stage.removeEventListener(MouseEvent.MOUSE_UP, onMouseUp);
}
private function onMouseMove(e:MouseEvent):void
{
if (startPoint != null)
{
var origin:Vector3D = new Vector3D;
var directionA:Vector3D = new Vector3D;
var directionB:Vector3D = new Vector3D;
var direction:Vector3D = new Vector3D;
camera.calculateRay(origin, directionA, camera.view.width/2, camera.view.height/2);
camera.calculateRay(origin, directionB, mouseX, mouseY);
var pos : Vector3D = intersectionPoint(origin, directionB, new Vector3D(0, startPoint.y, 0), new Vector3D(0, 1, 0));
box.x = pos.x - startPoint.x;
box.y = pos.y - startPoint.y;
box.z = pos.z - startPoint.z;
}
}
public static function intersectionPoint(lineStart:Vector3D, lineDirection:Vector3D, planePosition:Vector3D, planeNormal:Vector3D):Vector3D {
var result:Vector3D = new Vector3D();
var w:Vector3D = lineStart.subtract(planePosition);
var d:Number = planeNormal.dotProduct(lineDirection);
var n:Number = -planeNormal.dotProduct(w);
if (Math.abs(d) < 0.0000001) return result;
var sI:Number = n / d;
result.x = lineStart.x + (lineDirection.x * sI);
result.y = lineStart.y + (lineDirection.y * sI);
result.z = lineStart.z + (lineDirection.z * sI);
return result;
}
private function onMouse9Move(e:MouseEvent3D):void
{
if (boxSelected) {
var object:Object3D = e.target as Object3D;
//var target:Vector3D = object.localToGlobal(new Vector3D(e.localX, e.localY, e.localZ));
//var target:Vector3D = object.globalToLocal(new Vector3D(e.localX, e.localY, e.localZ));
//object.x = e.localX;
//object.y = e.localY;
//object.z = object.z;
//object.x = target.x;
//object.y = target.y;
//object.z = target.z;
//trace(box.x);
//trace(e.localX);
//trace(target.x);
}
}
private function onClick(e:MouseEvent3D):void
{
var box:Box = new Box(50,50,50,1,1,1,false,new FillMaterial(0xFF0000));
box.x = e.localX;
box.y = e.localY;
box.z = e.localZ + 25;
scene.addChild(box);
uploadResources(box.getResources());
}
private function uploadResources(resources:Vector.<Resource>):void {
for each (var resource:Resource in resources) {
resource.upload(stage3D.context3D);
}
}
private function onEnterFrame(e:Event):void {
if (boxSelected) {
}
camera.render(stage3D);
}
private function onResize(e:Event = null):void {
camera.view.width = stage.stageWidth;
camera.view.height = stage.stageHeight;
}
}
}