No shdows on implimentation and App crashes when Re-Render All

[Surakshaajith]

I am using android studio 4.1.1

Steps to recreate the crash:

1. Create empty activity
2. added implementation 'com.sdsmdg.harjot:materialshadows:1.2.5'
3. copied "activity_main.xml" and "MainActivity.java" from sample app
   App doesn't show any shadow when i run the application
4. uncheck the check box and select "Re-Render All"
   App crashes here

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.neuroflares.flares, PID: 19607
    java.lang.AssertionError
        at com.sdsmdg.harjot.materialshadows.utilities.GrahamScan.<init>(GrahamScan.java:45)
        at com.sdsmdg.harjot.materialshadows.shadowutils.ShadowGenerator.calculateAndRenderShadow(ShadowGenerator.java:258)
        at com.sdsmdg.harjot.materialshadows.shadowutils.ShadowGenerator.generate(ShadowGenerator.java:142)
        at com.sdsmdg.harjot.materialshadows.MaterialShadowViewWrapper.onLayout(MaterialShadowViewWrapper.java:91)
        at android.view.View.layout(View.java:24475)
        at android.view.ViewGroup.layout(ViewGroup.java:7383)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1582)
        at android.view.View.layout(View.java:24475)
        at android.view.ViewGroup.layout(ViewGroup.java:7383)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
        at android.view.View.layout(View.java:24475)
        at android.view.ViewGroup.layout(ViewGroup.java:7383)
        at androidx.appcompat.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:536)
        at android.view.View.layout(View.java:24475)
        at android.view.ViewGroup.layout(ViewGroup.java:7383)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
        at android.view.View.layout(View.java:24475)
        at android.view.ViewGroup.layout(ViewGroup.java:7383)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1582)
        at android.view.View.layout(View.java:24475)
        at android.view.ViewGroup.layout(ViewGroup.java:7383)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
        at com.android.internal.policy.DecorView.onLayout(DecorView.java:1225)
        at android.view.View.layout(View.java:24475)
        at android.view.ViewGroup.layout(ViewGroup.java:7383)
        at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:4212)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:3647)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2575)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:9910)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1010)
        at android.view.Choreographer.doCallbacks(Choreographer.java:809)
        at android.view.Choreographer.doFrame(Choreographer.java:744)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:995)
        at android.os.Handler.handleCallback(Handler.java:938)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:246)
        at android.app.ActivityThread.main(ActivityThread.java:8506)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)