update angle calculations

CHANGELOG.md

@@ -11,9 +11,8 @@ Repository: **<git+https://github.com/vladmandic/human.git>**
 
 ### **HEAD -> main** 2021/08/17 mandic00@live.com
 
-
-### **origin/main** 2021/08/15 mandic00@live.com
-
+- strict type checks
+- add webgu checks
 - experimental webgpu support
 - add experimental webgu demo
 - add backend initialization checks

src/face.ts

@@ -86,6 +86,9 @@ const calculateFaceAngle = (face, imageSize): {
       thetaY = Math.atan2(r21, r22);
       thetaX = 0;
     }
+    if (!isNaN(thetaX)) thetaX = 0;
+    if (!isNaN(thetaY)) thetaY = 0;
+    if (!isNaN(thetaZ)) thetaZ = 0;
     return { pitch: 2 * -thetaX, yaw: 2 * -thetaY, roll: 2 * -thetaZ };
   };
   // simple Euler angle calculation based existing 3D mesh