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87 lines
2.6 KiB
87 lines
2.6 KiB
#if VRTK_DEFINE_SDK_DAYDREAM
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namespace VRTK
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{
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using UnityEngine;
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/// <summary>
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/// DaydreamReach component uses touchpad to extend controller position out in front of user
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/// along the current controller orientation plane
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/// </summary>
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public class DaydreamReach : MonoBehaviour
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{
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[Tooltip("Controller to track, defaults to ./Controller but probably want a Pointer Joint like GvrControllerPointer/Laser")]
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public Transform controller;
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[Tooltip("Maximum reach distance from controller origin.")]
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public float reachDistance = 0.5f;
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private Vector3 positionOrigin;
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protected virtual void Start()
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{
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if (controller == null)
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{
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controller = transform.Find("Controller");
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}
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positionOrigin = transform.position;
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}
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protected virtual void Update()
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{
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if (!GvrController.IsTouching)
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{
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// snap back to origin
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transform.position = positionOrigin;
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}
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else
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{
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transform.position = ReachForwardByDistance();
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}
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}
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private Vector3 ReachForwardByDistance()
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{
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Vector3 pos = positionOrigin;
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Vector3 offset = Vector3.zero;
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Vector2 touch = GetTouch(5);
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offset.z = touch.y * reachDistance;
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offset = controller.transform.rotation * offset;
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pos += offset;
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return pos;
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}
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/// <summary>
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/// GetTouch gets touch position adjusted coordinates. Abs(x) and abs(y) always 0 to 1
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/// </summary>
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/// <param name="origin">like a numeric keypad, 1= lower left, 2=lower-center, 5=center etc</param>
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/// <returns>A Vector2 of the touch position.</returns>
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private Vector2 GetTouch(int origin = 5)
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{
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if (!GvrController.IsTouching)
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{
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return Vector2.zero;
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}
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Vector2 touch = GvrController.TouchPos;
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// raw: 0,0 is top left, x is left-right, y is front-back
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// invert y axis
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touch.y = 1.0f - touch.y;
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switch (origin)
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{
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case 1:
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break;
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case 2:
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touch.x = touch.x * 2f - 1f;
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break;
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case 5:
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touch.y = touch.y * 2f - 1f;
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touch.x = touch.x * 2f - 1f;
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break;
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}
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return touch;
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}
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}
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}
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#endif
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