java - ARcore - 如何获取一个节点与另一节点的距离？

Question

我正在寻找一种方法来查找 ARCore sceneform SDK 中一个节点与其他节点的距离。我研究了 overlapTestAll() 和 overlapTest() ，它们只返回彼此冲突的列表节点。我假设此方法通过计算节点之间的距离返回列表。

Answer 1

获取 vector 之间的距离(以米为单位):

private float getDistanceBetweenVectorsInMeters(Vector3 to, Vector3 from) 
{
    // Compute the difference vector between the two hit locations.
    float dx = to.x - from.x;
    float dy = to.y - from.y;
    float dz = to.z - from.z;

    // Compute the straight-line distance (distanceMeters)
    return (float) Math.sqrt(dx * dx + dy * dy + dz * dz);
}