Sceneform ARCore Android 工作室

Question

我正在开发一款 AR 应用，可让您通过滑动屏幕来移动球。我能够检测到滑动，但我不确定如何移动球。所以我希望球根据屏幕滑动的时间从一个位置移动到另一个位置。所以当你刷球时，球就像被扔了一样移动。

谁能帮我解决这个问题。谢谢

Answer 1

要移动可渲染对象，您可以在旧位置将其删除，然后将其放置在新位置。这是一个示例 - 这是按钮驱动而不是滑动驱动，但可以类似地使用移动。下面的代码适用于当前选择的anchorNode - 即用户可以选择不同的节点来移动。

        //Add a listener for the left button
        FloatingActionButton leftButtom = findViewById(R.id.left_button);
        leftButtom.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //Move the anchor left
                Log.d(TAG,"Moving anchor left");
                if (currentSelectedAnchorNode != null) {
                    //Get the current Pose and transform it then set a new anchor at the new pose
                    Session session = arFragment.getArSceneView().getSession();
                    Anchor currentAnchor = currentSelectedAnchorNode.getAnchor();
                    Pose oldPose = currentAnchor.getPose();
                    Pose newPose = oldPose.compose(Pose.makeTranslation(-0.05f,0,0));
                    currentSelectedAnchorNode = moveRenderable(currentSelectedAnchorNode, newPose);
                }
            }
        });

    private AnchorNode moveRenderable(AnchorNode markAnchorNodeToMove, Pose newPoseToMoveTo) {
        //Move a renderable to a new pose
        if (markAnchorNodeToMove != null) {
            arFragment.getArSceneView().getScene().removeChild(markAnchorNodeToMove);
            anchorNodeList.remove(markAnchorNodeToMove);
        } else {
            Log.d(TAG,"moveRenderable - markAnchorNode was null");
            return null;
        }
        Frame frame = arFragment.getArSceneView().getArFrame();
        Session session = arFragment.getArSceneView().getSession();
        Anchor markAnchor = session.createAnchor(newPoseToMoveTo.extractTranslation());
        AnchorNode newMarkAnchorNode = new AnchorNode(markAnchor);
        newMarkAnchorNode.setRenderable(andyRenderable);
        newMarkAnchorNode.setParent(arFragment.getArSceneView().getScene());
        anchorNodeList.add(newMarkAnchorNode);

        return newMarkAnchorNode;
    }