Angle update

app/src/main/java/com/example/jnicpp/bowling/PoseOverlayView.kt

@@ -32,8 +32,19 @@ class PoseOverlayView @JvmOverloads constructor(
         style = Paint.Style.STROKE
         strokeWidth = PoseSkeletonRenderer.STROKE_WIDTH
     }
+    private val anglePaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
+        color = ContextCompat.getColor(context, R.color.white)
+        style = Paint.Style.FILL
+        textSize = 36f
+        isFakeBoldText = true
+        // Readable regardless of what's behind it (skin, clothing, wall) --
+        // the skeleton paints get away without this since a line/dot has a
+        // consistent look, but small text needs the contrast.
+        setShadowLayer(4f, 0f, 0f, ContextCompat.getColor(context, R.color.black))
+    }
 
     private var pose: Pose? = null
+    private var angles: PoseAngles? = null
     private var isFrontCamera = false
 
     // Source image size and rotation, as last reported by the analyzer --
@@ -48,6 +59,7 @@ class PoseOverlayView @JvmOverloads constructor(
     /** Called from the main thread with the latest analyzer result, or null to clear. */
     fun update(frame: PoseAnalyzer.PoseFrameResult?) {
         pose = frame?.pose
+        angles = frame?.angles
         if (frame != null) {
             isFrontCamera = frame.isFrontCamera
             sourceWidth = frame.imageWidth
@@ -60,6 +72,7 @@ class PoseOverlayView @JvmOverloads constructor(
 
     fun clear() {
         pose = null
+        angles = null
         invalidate()
     }
 
@@ -85,5 +98,6 @@ class PoseOverlayView @JvmOverloads constructor(
         super.onDraw(canvas)
         val currentPose = pose ?: return
         PoseSkeletonRenderer.draw(canvas, currentPose, transform, bonePaint, jointPaint)
+        angles?.let { PoseSkeletonRenderer.drawAngleLabels(canvas, currentPose, it, transform, anglePaint) }
     }
 }