Fix Polymer licensing issues

third_party/web-animations-js/sources/src/matrix-interpolation.js

-// Copyright 2014 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-//   You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-//   See the License for the specific language governing permissions and
-// limitations under the License.
-
-(function(scope, testing) {
-  var composeMatrix = (function() {
-    function multiply(a, b) {
-      var result = [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]];
-      for (var i = 0; i < 4; i++) {
-        for (var j = 0; j < 4; j++) {
-          for (var k = 0; k < 4; k++) {
-            result[i][j] += b[i][k] * a[k][j];
-          }
-        }
-      }
-      return result;
-    }
-
-    function is2D(m) {
-      return (
-          m[0][2] == 0 &&
-          m[0][3] == 0 &&
-          m[1][2] == 0 &&
-          m[1][3] == 0 &&
-          m[2][0] == 0 &&
-          m[2][1] == 0 &&
-          m[2][2] == 1 &&
-          m[2][3] == 0 &&
-          m[3][2] == 0 &&
-          m[3][3] == 1);
-    }
-
-    function composeMatrix(translate, scale, skew, quat, perspective) {
-      var matrix = [[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]];
-
-      for (var i = 0; i < 4; i++) {
-        matrix[i][3] = perspective[i];
-      }
-
-      for (var i = 0; i < 3; i++) {
-        for (var j = 0; j < 3; j++) {
-          matrix[3][i] += translate[j] * matrix[j][i];
-        }
-      }
-
-      var x = quat[0], y = quat[1], z = quat[2], w = quat[3];
-
-      var rotMatrix = [[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]];
-
-      rotMatrix[0][0] = 1 - 2 * (y * y + z * z);
-      rotMatrix[0][1] = 2 * (x * y - z * w);
-      rotMatrix[0][2] = 2 * (x * z + y * w);
-      rotMatrix[1][0] = 2 * (x * y + z * w);
-      rotMatrix[1][1] = 1 - 2 * (x * x + z * z);
-      rotMatrix[1][2] = 2 * (y * z - x * w);
-      rotMatrix[2][0] = 2 * (x * z - y * w);
-      rotMatrix[2][1] = 2 * (y * z + x * w);
-      rotMatrix[2][2] = 1 - 2 * (x * x + y * y);
-
-      matrix = multiply(matrix, rotMatrix);
-
-      var temp = [[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]];
-      if (skew[2]) {
-        temp[2][1] = skew[2];
-        matrix = multiply(matrix, temp);
-      }
-
-      if (skew[1]) {
-        temp[2][1] = 0;
-        temp[2][0] = skew[0];
-        matrix = multiply(matrix, temp);
-      }
-
-      if (skew[0]) {
-        temp[2][0] = 0;
-        temp[1][0] = skew[0];
-        matrix = multiply(matrix, temp);
-      }
-
-      for (var i = 0; i < 3; i++) {
-        for (var j = 0; j < 3; j++) {
-          matrix[i][j] *= scale[i];
-        }
-      }
-
-      if (is2D(matrix)) {
-        return [matrix[0][0], matrix[0][1], matrix[1][0], matrix[1][1], matrix[3][0], matrix[3][1]];
-      }
-      return matrix[0].concat(matrix[1], matrix[2], matrix[3]);
-    }
-    return composeMatrix;
-  })();
-
-  function clamp(x, min, max) {
-    return Math.max(Math.min(x, max), min);
-  };
-
-  function quat(fromQ, toQ, f) {
-    var product = scope.dot(fromQ, toQ);
-    product = clamp(product, -1.0, 1.0);
-
-    var quat = [];
-    if (product === 1.0) {
-      quat = fromQ;
-    } else {
-      var theta = Math.acos(product);
-      var w = Math.sin(f * theta) * 1 / Math.sqrt(1 - product * product);
-
-      for (var i = 0; i < 4; i++) {
-        quat.push(fromQ[i] * (Math.cos(f * theta) - product * w) +
-                  toQ[i] * w);
-      }
-    }
-    return quat;
-  }
-
-  scope.composeMatrix = composeMatrix;
-  scope.quat = quat;
-
-})(webAnimations1, webAnimationsTesting);