From ae3dad86c5f10d454884ed041c0a6539f34441cd Mon Sep 17 00:00:00 2001
From: Martin Konicek <mkonicek@fb.com>
Date: Thu, 31 Mar 2016 06:40:23 -0700
Subject: [PATCH] Revert "Android support for perspective transform"

Summary:This reverts "Android support for perspective transform": 3e760f48c5a28b592cb60c4060ca28a1574f6274, PR https://github.com/facebook/react-native/pull/6159, D3053532.

It broke negative scale transforms: https://github.com/facebook/react-native/issues/6622

Reviewed By: bestander

Differential Revision: D3120627

fb-gh-sync-id: 727528d39c049180fe4862d006f2089c997afd45
fbshipit-source-id: 727528d39c049180fe4862d006f2089c997afd45
---
 .../react/uimanager/BaseViewManager.java      | 21 +------------------
 1 file changed, 1 insertion(+), 20 deletions(-)

diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java
index 12fbae977..9a697ce3a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java
@@ -6,10 +6,8 @@ import android.graphics.Color;
 import android.os.Build;
 import android.view.View;
 
-import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
 import com.facebook.react.uimanager.annotations.ReactProp;
-import com.facebook.react.uimanager.DisplayMetricsHolder;
 
 /**
  * Base class that should be suitable for the majority of subclasses of {@link ViewManager}.
@@ -27,7 +25,6 @@ public abstract class BaseViewManager<T extends View, C extends LayoutShadowNode
   private static final String PROP_DECOMPOSED_MATRIX_SCALE_Y = "scaleY";
   private static final String PROP_DECOMPOSED_MATRIX_TRANSLATE_X = "translateX";
   private static final String PROP_DECOMPOSED_MATRIX_TRANSLATE_Y = "translateY";
-  private static final String PROP_DECOMPOSED_MATRIX_PERSPECTIVE = "perspective";
   private static final String PROP_OPACITY = "opacity";
   private static final String PROP_ELEVATION = "elevation";
   private static final String PROP_RENDER_TO_HARDWARE_TEXTURE = "renderToHardwareTextureAndroid";
@@ -35,8 +32,6 @@ public abstract class BaseViewManager<T extends View, C extends LayoutShadowNode
   private static final String PROP_ACCESSIBILITY_COMPONENT_TYPE = "accessibilityComponentType";
   private static final String PROP_ACCESSIBILITY_LIVE_REGION = "accessibilityLiveRegion";
   private static final String PROP_IMPORTANT_FOR_ACCESSIBILITY = "importantForAccessibility";
-  private static final int PERSPECTIVE_ARRAY_INVERTED_CAMERA_DISTANCE_INDEX = 2;
-  private static final float CAMERA_DISTANCE_NORMALIZATION_MULTIPLIER = 5;
 
   // DEPRECATED
   private static final String PROP_ROTATION = "rotation";
@@ -169,20 +164,6 @@ public abstract class BaseViewManager<T extends View, C extends LayoutShadowNode
         (float) matrix.getDouble(PROP_DECOMPOSED_MATRIX_SCALE_X));
     view.setScaleY(
         (float) matrix.getDouble(PROP_DECOMPOSED_MATRIX_SCALE_Y));
-        
-    if (matrix.hasKey(PROP_DECOMPOSED_MATRIX_PERSPECTIVE)) {
-      ReadableArray perspectiveArray = matrix.getArray(PROP_DECOMPOSED_MATRIX_PERSPECTIVE);
-      if (perspectiveArray.size() > PERSPECTIVE_ARRAY_INVERTED_CAMERA_DISTANCE_INDEX) {
-        float cameraDistance = (float)(-1 / perspectiveArray.getDouble(PERSPECTIVE_ARRAY_INVERTED_CAMERA_DISTANCE_INDEX));
-        float scale = DisplayMetricsHolder.getScreenDisplayMetrics().density;
-
-        // The following converts the matrix's perspective to a camera distance
-        // such that the camera perspective looks the same on Android and iOS        
-        float normalizedCameraDistance = scale * cameraDistance * CAMERA_DISTANCE_NORMALIZATION_MULTIPLIER;
-
-        view.setCameraDistance(normalizedCameraDistance);
-      }
-    }
   }
 
   private static void resetTransformMatrix(View view) {
@@ -194,4 +175,4 @@ public abstract class BaseViewManager<T extends View, C extends LayoutShadowNode
     view.setScaleX(1);
     view.setScaleY(1);
   }
-}
\ No newline at end of file
+}