I have been trying to do that for nearly 4 days now, I almost got it, but there is still one error
what I am trying to do: I place an object inside the overlay sprite, get screen x and y with camera.screen(object3D) , object3D was created as a leading object for the overlay sprite, all working fine so far, but the object is always in a sort of billbord possition, that is perfect, but I wanted a bit more I started transforming the object using matrix3D to get the feeling similar to a real projection of a plane, the best effect I got with this: var viewMatrix = new Matrix3D(); viewMatrix.rawData = camera.viewMatrix.rawData; viewMatrix.prepend(flipY); var overlayMatrix = new Matrix3D(); overlayMatrix .prepend(viewMatrix); overlayMatrix .prepend(object3D.sceneTransform); then I added the scale and possition and at the end: overlaySprite.transform.matrix3D = overlayMatrix ; and it almost works! the sprite is transformed 80-90% like a plate would, with one ERROR when resizing the stage I change the x and y of the view, none camera.viewMatrix nor object3D.sceneTransform know that the view changed its possition and funny things happen to the overlaySprite if I didn't set the position of the overlaySprite with the screen values all would be fine, but the overlaySprite would be in the wrong possition (however the transformation would be fine) I also placed overlaySprite in additional sprite and transformed one of them with or without setting the possition - nothing works so, the only thing I can think of is to correct the x and y of the overlaySprite, but I bet there are some better ways
