Add more Animated node types

Libraries/Animated/src/AnimatedImplementation.js

@@ -12,8 +12,10 @@
 
 const {AnimatedEvent, attachNativeEvent} = require('./AnimatedEvent');
 const AnimatedAddition = require('./nodes/AnimatedAddition');
+const AnimatedClamp = require('./nodes/AnimatedClamp');
 const AnimatedDiffClamp = require('./nodes/AnimatedDiffClamp');
 const AnimatedDivision = require('./nodes/AnimatedDivision');
+const AnimatedExponentiation = require('./nodes/AnimatedExponentiation');
 const AnimatedInterpolation = require('./nodes/AnimatedInterpolation');
 const AnimatedModulo = require('./nodes/AnimatedModulo');
 const AnimatedMultiplication = require('./nodes/AnimatedMultiplication');
@@ -47,6 +49,12 @@ export type CompositeAnimation = {
   _isUsingNativeDriver: () => boolean,
 };
 
+const abs = function(
+  a: AnimatedNode | number
+): AnimatedAddition {
+  return new AnimatedExponentiation(AnimatedExponentiation(a, 2), 0.5);
+};
+
 const add = function(
   a: AnimatedNode | number,
   b: AnimatedNode | number,
@@ -75,10 +83,31 @@ const multiply = function(
   return new AnimatedMultiplication(a, b);
 };
 
+const pow = function(
+  a: AnimatedNode | number,
+  b: AnimatedNode | number
+): AnimatedExponentiation {
+  return new AnimatedExponentiation(a, b);
+};
+
+const sqrt = function(
+  a: AnimatedNode | number
+): AnimatedExponentiation {
+  return new AnimatedExponentiation(a, 0.5);
+};
+
 const modulo = function(a: AnimatedNode, modulus: number): AnimatedModulo {
   return new AnimatedModulo(a, modulus);
 };
 
+const clamp = function(
+  a: AnimatedNode,
+  min: AnimatedNode | number,
+  max: AnimatedNode | number,
+): AnimatedClamp {
+  return new AnimatedClamp(a, min, max);
+};
+
 const diffClamp = function(
   a: AnimatedNode,
   min: number,
@@ -569,6 +598,14 @@ module.exports = {
    */
   spring,
 
+  /**
+   * Creates a new Animated value by taking the absolute value of another
+   * Animated value.
+   *
+   * See http://facebook.github.io/react-native/docs/animated.html#abs
+   */
+  abs,
+
   /**
    * Creates a new Animated value composed from two Animated values added
    * together.
@@ -601,6 +638,21 @@ module.exports = {
    */
   multiply,
 
+  /**
+   * Creates a new Animated value by raising the first value to the power of
+   * the second value.
+   *
+   * See http://facebook.github.io/react-native/docs/animated.html#pow
+   */
+  pow,
+
+  /**
+   * Creates a new Animated value by taking the square root of the given value.
+   *
+   * See http://facebook.github.io/react-native/docs/animated.html#sqrt
+   */
+  sqrt,
+
   /**
    * Creates a new Animated value that is the (non-negative) modulo of the
    * provided Animated value.
@@ -609,6 +661,14 @@ module.exports = {
    */
   modulo,
 
+  /**
+   * Create a new Animated value that is limited between minimum and
+   * maximum values.
+   *
+   * See http://facebook.github.io/react-native/docs/animated.html#clamp
+   */
+  clamp,
+
   /**
    * Create a new Animated value that is limited between 2 values. It uses the
    * difference between the last value so even if the value is far from the

Libraries/Animated/src/nodes/AnimatedClamp.js

@@ -0,0 +1,73 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule AnimatedClamp
+ * @flow
+ * @format
+ */
+'use strict';
+
+const AnimatedInterpolation = require('./AnimatedInterpolation');
+const AnimatedNode = require('./AnimatedNode');
+const AnimatedValue = require('./AnimatedValue');
+const AnimatedWithChildren = require('./AnimatedWithChildren');
+
+import type {InterpolationConfigType} from './AnimatedInterpolation';
+
+class AnimatedClamp extends AnimatedWithChildren {
+  _a: AnimatedNode;
+  _min: AnimatedNode;
+  _max: AnimatedNode;
+
+  constructor(a: AnimatedNode, min: AnimatedNode | number, max: AnimatedNode | number) {
+    super();
+
+    this._a = a;
+    this._min = typeof min === 'number' ? new AnimatedValue(min) : min;
+    this._max = typeof max === 'number' ? new AnimatedValue(max) : max;
+  }
+
+  __makeNative() {
+    this._a.__makeNative();
+    this._min.__makeNative();
+    this._max.__makeNative();
+    super.__makeNative();
+  }
+
+  interpolate(config: InterpolationConfigType): AnimatedInterpolation {
+    return new AnimatedInterpolation(this, config);
+  }
+
+  __getValue(): number {
+    return Math.min(Math.max(this._a.__getValue(), this._min.__getValue()), this._max.__getValue());
+  }
+
+  __attach(): void {
+    this._a.__addChild(this);
+    this._min.__addChild(this);
+    this._max.__addChild(this);
+  }
+
+  __detach(): void {
+    this._a.__removeChild(this);
+    this._min.__removeChild(this);
+    this._max.__removeChild(this);
+    super.__detach();
+  }
+
+  __getNativeConfig(): any {
+    return {
+      type: 'clamp',
+      input: this._a.__getNativeTag(),
+      min: this._min.__getNativeTag(),
+      max: this._max.__getNativeTag(),
+    };
+  }
+}
+
+module.exports = AnimatedClamp;

Libraries/Animated/src/nodes/AnimatedExponentiation.js

@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule AnimatedExponentiation
+ * @flow
+ * @format
+ */
+'use strict';
+
+const AnimatedInterpolation = require('./AnimatedInterpolation');
+const AnimatedNode = require('./AnimatedNode');
+const AnimatedValue = require('./AnimatedValue');
+const AnimatedWithChildren = require('./AnimatedWithChildren');
+
+import type {InterpolationConfigType} from './AnimatedInterpolation';
+
+class AnimatedExponentiation extends AnimatedWithChildren {
+  _a: AnimatedNode;
+  _b: AnimatedNode;
+
+  constructor(a: AnimatedNode | number, b: AnimatedNode | number) {
+    super();
+    this._a = typeof a === 'number' ? new AnimatedValue(a) : a;
+    this._b = typeof b === 'number' ? new AnimatedValue(b) : b;
+  }
+
+  __makeNative() {
+    this._a.__makeNative();
+    this._b.__makeNative();
+    super.__makeNative();
+  }
+
+  __getValue(): number {
+    return Math.pow(this._a.__getValue(), this._b.__getValue());
+  }
+
+  interpolate(config: InterpolationConfigType): AnimatedInterpolation {
+    return new AnimatedInterpolation(this, config);
+  }
+
+  __attach(): void {
+    this._a.__addChild(this);
+    this._b.__addChild(this);
+  }
+
+  __detach(): void {
+    this._a.__removeChild(this);
+    this._b.__removeChild(this);
+    super.__detach();
+  }
+
+  __getNativeConfig(): any {
+    return {
+      type: 'exponentiation',
+      input: [this._a.__getNativeTag(), this._b.__getNativeTag()],
+    };
+  }
+}
+
+module.exports = AnimatedExponentiation;

Libraries/NativeAnimation/Nodes/RCTClampAnimatedNode.h

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import "RCTValueAnimatedNode.h"
+
+@interface RCTClampAnimatedNode : RCTValueAnimatedNode
+
+@end

Libraries/NativeAnimation/Nodes/RCTClampAnimatedNode.m

@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import "RCTClampAnimatedNode.h"
+
+@implementation RCTClampAnimatedNode
+{
+  NSNumber *_inputNodeTag;
+  NSNumber *_minNodeTag;
+  NSNumber *_maxNodeTag;
+}
+
+- (instancetype)initWithTag:(NSNumber *)tag
+                     config:(NSDictionary<NSString *, id> *)config
+{
+  if (self = [super initWithTag:tag config:config]) {
+    _inputNodeTag = config[@"input"];
+    _minNodeTag = config[@"min"];
+    _maxNodeTag = config[@"max"];
+  }
+
+  return self;
+}
+
+- (void)performUpdate
+{
+  [super performUpdate];
+
+  RCTValueAnimatedNode *input = (RCTValueAnimatedNode *)[self.parentNodes objectForKey:_inputNodeTag];
+  RCTValueAnimatedNode *min = (RCTValueAnimatedNode *)[self.parentNodes objectForKey:_minNodeTag];
+  RCTValueAnimatedNode *max = (RCTValueAnimatedNode *)[self.parentNodes objectForKey:_maxNodeTag];
+
+  if ([input isKindOfClass:[RCTValueAnimatedNode class]] &&
+      [min isKindOfClass:[RCTValueAnimatedNode class]] &&
+      [max isKindOfClass:[RCTValueAnimatedNode class]]) {
+    self.value = MIN(MAX(input.value, min.value), max.value);
+  }
+}
+
+@end

Libraries/NativeAnimation/Nodes/RCTExponentiationAnimatedNode.h

@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import "RCTValueAnimatedNode.h"
+
+@interface RCTExponentiationAnimatedNode : RCTValueAnimatedNode
+
+@end

Libraries/NativeAnimation/Nodes/RCTExponentiationAnimatedNode.m

@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import "RCTExponentiationAnimatedNode.h"
+
+@implementation RCTExponentiationAnimatedNode
+
+- (void)performUpdate
+{
+  [super performUpdate];
+
+  NSArray<NSNumber *> *inputNodes = self.config[@"input"];
+  if (inputNodes.count > 1) {
+    RCTValueAnimatedNode *parent1 = (RCTValueAnimatedNode *)[self.parentNodes objectForKey:inputNodes[0]];
+    RCTValueAnimatedNode *parent2 = (RCTValueAnimatedNode *)[self.parentNodes objectForKey:inputNodes[1]];
+    if ([parent1 isKindOfClass:[RCTValueAnimatedNode class]] &&
+        [parent2 isKindOfClass:[RCTValueAnimatedNode class]]) {
+      self.value = pow(parent1.value, parent2.value);
+    }
+  }
+}
+
+@end