功能说明
输入相机的 openGL 纹理，实时输出人脸52表情 BlendShape 数据，遵循苹果 ARKit 规范，详情请参见 ARFaceAnchor。您可以利用这些表情数据做一进步的开发，例如传到 Unity 中驱动您的模型。
集成指引
接口调用
1. 打开功能开关：
[self.beautyKit setFeatureEnableDisable:ANIMOJI_52_EXPRESSION enable:YES];
2. 设置人脸点位信息数据回调。
2.6.0及之前版本使用如下方法
//XMagic.h- (void)registerSDKEventListener:(id<YTSDKEventListener> _Nullable)listener;@implementation listener- (void)onYTDataEvent:(id)event{NSLog(@"YTData %@", event);}
3.0.0版本使用如下方法
//XMagic.h- (void)registerSDKEventListener:(id<YTSDKEventListener> _Nullable)listener;- (void)onAIEvent:(id)event{NSDictionary *eventDict = (NSDictionary *)event;if (eventDict[@"ai_info"] != nil) {NSLog(@"ai_info %@",eventDict[@"ai_info"]);}}
onYTDataUpdate 返回 JSON string 结构，最多返回5个人脸信息：
onAIEvent 中通过eventDict[@"ai_info"] 获取到的 JSON string 结构数据，最多返回5个人脸信息：
{"face_info":[{"trace_id":5,"face_256_point":[180.0,112.2,...],"face_256_visible":[0.85,...],"out_of_screen":true,"left_eye_high_vis_ratio":1.0,"right_eye_high_vis_ratio":1.0,"left_eyebrow_high_vis_ratio":1.0,"right_eyebrow_high_vis_ratio":1.0,"mouth_high_vis_ratio":1.0,"expression_weights":[0.12,-0.32...]},...]}
字段含义
trace_id：人脸 ID，连续取流过程中，ID 相同的可以认为是同一张人脸。
expression_weights：实时表情 blendshape 数据，数组长度为52，每个数值取值范围为 0到1.0。{
"eyeBlinkLeft","eyeLookDownLeft","eyeLookInLeft","eyeLookOutLeft","eyeLookUpLeft","eyeSquintLeft","eyeWideLeft","eyeBlinkRight","eyeLookDownRight","eyeLookInRight","eyeLookOutRight","eyeLookUpRight","eyeSquintRight","eyeWideRight","jawForward","jawLeft","jawRight","jawOpen","mouthClose","mouthFunnel","mouthPucker","mouthRight","mouthLeft","mouthSmileLeft","mouthSmileRight","mouthFrownRight","mouthFrownLeft","mouthDimpleLeft","mouthDimpleRight","mouthStretchLeft","mouthStretchRight","mouthRollLower","mouthRollUpper","mouthShrugLower","mouthShrugUpper","mouthPressLeft","mouthPressRight","mouthLowerDownLeft","mouthLowerDownRight","mouthUpperUpLeft","mouthUpperUpRight","browDownLeft","browDownRight","browInnerUp","browOuterUpLeft","browOuterUpRight","cheekPuff","cheekSquintLeft","cheekSquintRight","noseSneerLeft","noseSneerRight","tongueOut"}其他字段是 人脸信息，只有当您购买了相关 License 才有那些字段。如果您只想获取表情数据，请忽略那些字段。
