71 lines
3.3 KiB
C#
71 lines
3.3 KiB
C#
//========= Copyright 2019, HTC Corporation. All rights reserved. ===========
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using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using UnityEngine;
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using UnityEngine.XR.OpenXR;
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namespace VIVE
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{
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namespace FacialTracking.Sample
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{
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public static class Eye
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{
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public const int WeightingCount = (int)XrEyeShapeHTC.XR_EYE_EXPRESSION_MAX_ENUM_HTC;
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private static XrFacialExpressionsHTC EyeExpression_;
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private static int LastUpdateFrame = -1;
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private static Error LastUpdateResult = Error.FAILED;
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private static Dictionary<XrEyeShapeHTC, float> Weightings;
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private static float[] blendshapes = new float[60];
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static Eye()
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{
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Weightings = new Dictionary<XrEyeShapeHTC, float>();
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for (int i = 0; i < WeightingCount; ++i) Weightings.Add((XrEyeShapeHTC)i, 0.0f);
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}
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private static bool UpdateData()
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{
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if (Time.frameCount == LastUpdateFrame) return LastUpdateResult == Error.WORK;
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else LastUpdateFrame = Time.frameCount;
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EyeExpression_.expressionCount = 60;
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EyeExpression_.type = XrStructureType.XR_TYPE_FACIAL_EXPRESSIONS_HTC;
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EyeExpression_.blendShapeWeightings = Marshal.AllocCoTaskMem(sizeof(float) * EyeExpression_.expressionCount);
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var feature = OpenXRSettings.Instance.GetFeature<VIVE_FacialTracking_OpenXR_API>();
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int res = feature.xrGetFacialExpressionsHTC(OpenXRSettings.Instance.GetFeature<VIVE_FacialTracking_OpenXR_API>().m_expressionHandle, ref EyeExpression_);
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if (res == (int)XrResult.XR_SUCCESS)
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{
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Marshal.Copy(EyeExpression_.blendShapeWeightings, blendshapes, 0, EyeExpression_.expressionCount);
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LastUpdateResult = Error.WORK;
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}
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else
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{
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LastUpdateResult = Error.FAILED;
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}
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return LastUpdateResult == Error.WORK;
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}
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public static bool GetEyeWeightings(out Dictionary<XrEyeShapeHTC, float> shapes, XrFacialExpressionsHTC expression)
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{
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for (int i = 0; i < WeightingCount; ++i)
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{
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Weightings[(XrEyeShapeHTC)(i)] = blendshapes[i];
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}
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shapes = Weightings;
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return true;
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}
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/// <summary>
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/// Gets weighting values from Eye module.
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/// </summary>
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/// <param name="shapes">Weighting values obtained from Eye module.</param>
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/// <returns>Indicates whether the values received are new.</returns>\
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[Obsolete("Create FacialManager object and call member function GetWeightings instead")]
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public static bool GetEyeWeightings(out Dictionary<XrEyeShapeHTC, float> shapes)
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{
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UpdateData();
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return GetEyeWeightings(out shapes, EyeExpression_);
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}
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}
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}
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} |