84 lines
2.8 KiB
C#
84 lines
2.8 KiB
C#
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using UnityEngine;
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using System.Collections;
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using System.Collections.Generic;
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namespace com.rfilkov.components
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{
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/// <summary>
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/// ModelPresentationScript processes the zoom out/in & wheel gestures to zoom and rotate the model, as well as hand raise pose to reset it.
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/// </summary>
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public class ModelPresentationScript : MonoBehaviour
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{
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[Tooltip("Camera used for screen-to-world calculations. This is usually the main camera.")]
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public Camera screenCamera;
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[Tooltip("Speed of rotation, when the presentation model spins.")]
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public float spinSpeed = 10;
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// reference to the gesture listener
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private ModelGestureListener gestureListener;
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// model's initial rotation
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private Quaternion initialRotation;
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void Start()
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{
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// hide mouse cursor
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//Cursor.visible = false;
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// by default set the main-camera to be screen-camera
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if (screenCamera == null)
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{
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screenCamera = Camera.main;
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}
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// get model initial rotation
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initialRotation = screenCamera ? Quaternion.Inverse(screenCamera.transform.rotation) * transform.rotation : transform.rotation;
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// get the gestures listener
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gestureListener = ModelGestureListener.Instance;
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}
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void Update()
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{
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// dont run Update() if there is no gesture listener
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if (!gestureListener)
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return;
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if (gestureListener.IsZoomingIn() || gestureListener.IsZoomingOut())
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{
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// zoom the model
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float zoomFactor = gestureListener.GetZoomFactor();
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Vector3 newLocalScale = new Vector3(zoomFactor, zoomFactor, zoomFactor);
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transform.localScale = Vector3.Lerp(transform.localScale, newLocalScale, spinSpeed * Time.deltaTime);
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}
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if (gestureListener.IsTurningWheel())
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{
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// rotate the model
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float turnAngle = Mathf.Clamp(gestureListener.GetWheelAngle(), -30f, 30f);
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float updateAngle = Mathf.Lerp(0, turnAngle, spinSpeed * Time.deltaTime);
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if (screenCamera)
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transform.RotateAround(transform.position, screenCamera.transform.TransformDirection(Vector3.up), updateAngle);
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else
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transform.Rotate(Vector3.up * turnAngle, Space.World);
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}
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if (gestureListener.IsRaiseHand())
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{
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// reset the model
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Vector3 newLocalScale = Vector3.one;
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transform.localScale = newLocalScale;
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transform.rotation = screenCamera ? screenCamera.transform.rotation * initialRotation : initialRotation;
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}
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}
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}
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}
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