[Stage3D] Picking / Ray Intersect don't work

looks very close mate!!

what is in your view matrix? have you tried not normalizing the mouse coords...

i.e.

var mX:Number = p.x; //i.e. stage.mouseX;

[font=Consolas,]var mY:Number = p.y; [color=#000000]//i.e. stage.mouseY;[/font]

Hi bwhiting,

sounds good when it is close - But not near enough

I have tried with no normalized mouse coords - The result is the same, no hit.

Here some values:

Vector3D(0.030640805686170305, 0.0016271979761298063, 0.00006891936057909493) <- The nearPos Vector , btw. the ray orgin (is little small, or?!?!?!)

My View Matrix i set like this:


var m:Matrix3D = new Matrix3D;
m.invert();
m.appendRotation(neigung, Vector3D.X_AXIS);

view.identity();
view.appendTranslation(position.x, position.y, position.z);
view.append(m);

getFrustum();

Hope this helps

Now i'm confused:

I have found some another calulation for ray picking, and now i'm really close to success , but now it seems that the hole coordinate system is a few units more left and bottom. So when i click left , buttom a few pixel away from an aabb box it beginn to hits. Now i'm confused....

The code i have found here:

[source lang="java"]var NEAR:Number = 0.1;
var FAR:Number = 5000;
var ASPECT:Number = winSize.x / winSize.y;

var dx:Number=Math.tan((45 * Math.PI / 180)*0.5)*(p.x/(winSize.x * 0.5)-1.0)/ ASPECT;
var dy:Number=Math.tan((45 * Math.PI / 180)*0.5)*0.5*(1.0-p.y/(winSize.y * 0.5));

var mt:Matrix3D = new Matrix3D();
mt.append(getView());

mt.invert();

var p1:Vector3D=new Vector3D(dx*NEAR,dy*NEAR,NEAR);
var p2:Vector3D = new Vector3D(dx * FAR, dy * FAR, FAR);

p1 = mt.transformVector(p1);

p2 = mt.transformVector(p2);

var dir:Vector3D = new Vector3D();
dir = p2.subtract(p1);

return new CRay(p1, dir);[/source]
How can that be?!?!

EDIT: okay, another notice. When i press the mouse in the direct center from the screen the second algo works perfectly!!! Hits the Box exactly! But when i go away from the center(with the mouse, camera still the same), the ray goes more and more wrong. Hope this helps somebody

EDIT #2: I'm really go crazy!

So this Code work perfectly on begin:

[source lang="java"] var mX:Number = -1 + (p.x / winSize.x) * 2;
var mY:Number = 1 - (p.y / winSize.y) * 2;

var farPos:Vector3D = new Vector3D( mX, mY, 1.0, 1.0 );
var nearPos:Vector3D = new Vector3D( mX, mY, 0.0, 1.0 );

var mt:Matrix3D = new Matrix3D();
mt.append(getProjection());
mt.append(getView());
mt.invert();

nearPos = mt.transformVector(nearPos);
farPos = mt.transformVector(farPos);

nearPos.scaleBy(1.0 / nearPos.w);
farPos.scaleBy(1.0 / farPos.w);

var Dir:Vector3D = farPos.subtract(nearPos);
Dir.normalize();

return new CRay(nearPos.subtract(position.add(Dir)), Dir);[/source]

So i hit everywhere with the mouse my boxes - All good....until i rotate or move my cameraI build my view matrix like the post before this. When i move the camera 1 unit , the ray hit nothing