Fix alpha and caching

android/src/main/java/org/andresoviedo/app/model3D/view/ModelRenderer.java

@@ -81,11 +81,13 @@ public float getFar() {
 	public void onSurfaceCreated(GL10 unused, EGLConfig config) {
 		// Set the background frame color
 		float[] backgroundColor = main.getModelActivity().getBackgroundColor();
-		GLES20.glClearColor(backgroundColor[0], backgroundColor[1], backgroundColor[2], backgroundColor[3]);
+		//add aplha channel to background to render as a overlay on camera
+		GLES20.glClearColor(0f, 0f, 0f, 0f);
+		GLES20.glClear(GLES20.GL_DEPTH_BUFFER_BIT|GLES20.GL_COLOR_BUFFER_BIT);
 
 		// Use culling to remove back faces.
 		// Don't remove back faces so we can see them
-		// GLES20.glEnable(GLES20.GL_CULL_FACE);
+		//GLES20.glEnable(GLES20.GL_CULL_FACE);
 
 		// Enable depth testing for hidden-surface elimination.
 		GLES20.glEnable(GLES20.GL_DEPTH_TEST);

android/src/main/java/org/andresoviedo/app/model3D/view/ModelSurfaceView.java

@@ -7,6 +7,7 @@
 import org.andresoviedo.app.model3D.services.SceneLoader;
 import org.andresoviedo.app.util.Utils;
 import org.andresoviedo.app.util.content.ContentUtils;
+import android.graphics.PixelFormat;
 import android.os.Handler;
 
 import android.opengl.GLSurfaceView;
@@ -37,6 +38,10 @@ public class ModelSurfaceView extends GLSurfaceView {
 
 	public ModelSurfaceView(Context context, RN3DView parent, String modelSrc, String textureSrc, float[] backgroundColor) {
 		super(context);
+		//for aplha channel
+		this.setZOrderOnTop(true);
+		this.setEGLConfigChooser(8, 8, 8, 8, 16, 0);
+		this.getHolder().setFormat(PixelFormat.RGBA_8888);
 		this.parent = parent;
 
 		this.modelSrc = modelSrc;

android/src/main/java/se/bonniernews/rn3d/RN3DViewManager.java

@@ -5,8 +5,8 @@
 package se.bonniernews.rn3d;
 
 import android.content.Context;
-import android.support.annotation.Nullable;
-import android.support.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.NonNull;
 import android.view.ViewGroup;
 
 import com.facebook.infer.annotation.Assertions;

android/src/main/res/values/styles.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="Theme.Transparent" parent="android:Theme">
+        <item name="android:windowIsTranslucent">true</item>
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:windowContentOverlay">@null</item>
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:windowIsFloating">true</item>
+        <item name="android:backgroundDimEnabled">false</item>
+    </style>
+</resources>

index.js

@@ -1,11 +1,7 @@
 import ModelView from './lib/ModelView'
-import ARModelView from './lib/ARModelView'
 import Manager from './lib/Manager'
-import ARManager from './lib/ARManager'
 
 export {
   ModelView,
-  ARModelView,
   Manager,
-  ARManager
 }

ios/ARKitInteraction/Utilities/Utilities.swift

@@ -26,7 +26,8 @@ extension float4x4 {
 extension CGPoint {
     /// Extracts the screen space point from a vector returned by SCNView.projectPoint(_:).
 	init(_ vector: SCNVector3) {
-		x = CGFloat(vector.x)
+        self.init()
+        x = CGFloat(vector.x)
 		y = CGFloat(vector.y)
 	}