在ARCore Sceneform中添加按钮进行旋转和缩放吗？

Question

[我正在尝试在我的Android应用中添加3D模型，该应用运行良好（将3D模型放置在屏幕上，用手指手势旋转它并用捏放大它）。我正在尝试使此手指缩放和旋转按钮。

Answer 1

您可以通过获取模型的当前位置来执行此操作。可以在您的按钮单击上使用以下方法。希望对您有帮助

private void modleMovement(TransformableNode node, String moveMent) {
    Vector3 currentPosition = new Vector3();
    Vector3 move = new Vector3();

    try {
        currentPosition = Objects.requireNonNull(node.getLocalPosition());

        if (moveMent.equals("down")) {
            move.set(currentPosition.x, (float) (currentPosition.y - 0.1), currentPosition.z);
            localPosition = move;
        }

        if (moveMent.equals("up")) {

            move.set(currentPosition.x, (float) (currentPosition.y + 0.1), currentPosition.z);
            localPosition = move;
        }

        if (moveMent.equals("right_move")) {

            move.set((float) (currentPosition.x + 0.1), currentPosition.y, currentPosition.z);
            localPosition = move;
        }

        if (moveMent.equals("left_move")) {

            move.set((float) (currentPosition.x - 0.1), currentPosition.y, currentPosition.z);
            localPosition = move;
        }
                    if (moveMent.equals("rotate_left")) {
            localPosition = currentPosition;
            rotateLeft(node, objAxis, currentPosition);
        }

        if (moveMent.equals("rotate_right")) {
            localPosition = currentPosition;
            rotateRight(node, objAxis, currentPosition);
        }

        if (moveMent.equals("zoom_in")) {
            move.set(currentPosition.x, currentPosition.y, (float) (currentPosition.z + 0.1));
            localPosition = move;
        }

        if (moveMent.equals("zoom_out")) {
            move.set(currentPosition.x, currentPosition.y, (float) (currentPosition.z - 0.1));
            localPosition = move;
        }


        node.setLocalPosition(move);
    } catch (Exception e) {
        e.printStackTrace();
    }
}