Высота леденца на вогнутом контуре

Я разбил форму звезды на 1 пятиугольник и 5 треугольных многоугольников (все они имеют выпуклый контур) и нарисовал их по отдельности.

Треугольный вид:

public class TriangleView extends View {
    private final Path path = new Path();
    private final Paint paint = new Paint();

    public TriangleView(Context context) {
        super(context);
        init(context, null, 0,0);
    }

    public TriangleView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        init(context, attrs, 0,0);
    }

    public TriangleView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context, attrs, defStyleAttr, 0);
    }

    public TriangleView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        init(context, attrs, defStyleAttr, defStyleRes);
    }

    private void init(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes){
        paint.setStyle(Paint.Style.FILL);
        paint.setColor(Color.argb(255, 100, 100, 255));
        setOutlineProvider(new OutlineProvider());
    }

    public void setPoints(float x1, float y1, float x2, float y2, float x3, float y3){
        path.reset();
        path.moveTo(x1, y1);
        path.lineTo(x2, y2);
        path.lineTo(x3, y3);
        path.close();
        postInvalidate();
    }

    @Override
    protected void onDraw(Canvas canvas) {
        canvas.drawPath(path, paint);
    }

    private static class OutlineProvider extends ViewOutlineProvider{
        @Override
        public void getOutline(View view, Outline outline) {
            Path path = ((TriangleView)view).path;
            outline.setConvexPath(path);
        }
    }
}

ПентагонВью:

public class PentagonView extends View {
    private final Path path = new Path();
    private final Paint paint = new Paint();

    public PentagonView(Context context) {
        super(context);
        init(context, null, 0,0);
    }

    public PentagonView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        init(context, attrs, 0,0);
    }

    public PentagonView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context, attrs, defStyleAttr, 0);
    }

    public PentagonView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        init(context, attrs, defStyleAttr, defStyleRes);
    }

    private void init(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes){
        paint.setStyle(Paint.Style.FILL);
        paint.setColor(Color.argb(255, 150, 150, 255));
        setOutlineProvider(new OutlineProvider());
    }

    public void setPoints(float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float x5, float y5){
        path.reset();
        path.moveTo(x1, y1);
        path.lineTo(x2, y2);
        path.lineTo(x3, y3);
        path.lineTo(x4, y4);
        path.lineTo(x5, y5);
        path.close();
        postInvalidate();
    }

    @Override
    protected void onDraw(Canvas canvas) {
        canvas.drawPath(path, paint);
    }

    private static class OutlineProvider extends ViewOutlineProvider {
        @Override
        public void getOutline(View view, Outline outline) {
            Path path = ((PentagonView)view).path;
            outline.setConvexPath(path);
        }
    }
}

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <app.eccweizhi.concaveshadow.PentagonView
        android:id="@+id/pentagonView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:elevation="4dp" />

    <app.eccweizhi.concaveshadow.TriangleView
        android:id="@+id/triangle1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:elevation="4dp" />

    <app.eccweizhi.concaveshadow.TriangleView
        android:id="@+id/triangle2"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:elevation="4dp" />

    <app.eccweizhi.concaveshadow.TriangleView
        android:id="@+id/triangle3"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:elevation="4dp" />

    <app.eccweizhi.concaveshadow.TriangleView
        android:id="@+id/triangle4"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:elevation="4dp" />

    <app.eccweizhi.concaveshadow.TriangleView
        android:id="@+id/triangle5"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:elevation="4dp" />

</FrameLayout>

Затем я использую их так

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        pentagonView.setPoints(
            520f,
            520f,
            640f,
            520f,
            677.0818f,
            634.1266f,
            580f,
            704.6608f,
            482.9182f,
            634.1266f
        )
        triangle1.setPoints(520f, 520f, 640f, 520f, 580f, 400f)
        triangle2.setPoints(640f, 520f, 677.0818f, 634.1266f, 777f, 520f)
        triangle3.setPoints(677.0818f, 634.1266f, 580f, 704.6608f, 697f, 750f)
        triangle4.setPoints(580f, 704.6608f, 482.9182f, 634.1266f, 440f, 750f)
        triangle5.setPoints(482.9182f, 634.1266f, 520f, 520f, 400f, 520f)
    }
}