[GeometryInterface] Add fromFloat32Array & fromFloat64Array function

third_party/WebKit/Source/core/dom/DOMMatrix.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/dom/DOMMatrix.h"
 
 namespace blink {
 
 DOMMatrix* DOMMatrix::create()
 {
     return new DOMMatrix(TransformationMatrix());
 }
 
 DOMMatrix* DOMMatrix::create(DOMMatrixReadOnly* other)
 {
     return new DOMMatrix(other->matrix(), other->is2D());
 }
 
 DOMMatrix* DOMMatrix::create(const SkMatrix44& matrix)
 {
     TransformationMatrix transformationMatrix(matrix);
     return new DOMMatrix(transformationMatrix, transformationMatrix.isAffine());
 }
 
+DOMMatrix* DOMMatrix::fromFloat32Array(DOMFloat32Array* float32Array, ExceptionState& exceptionState)
+{
+    if (float32Array->length() != 6 && float32Array->length() != 16) {
+        exceptionState.throwTypeError("The sequence must contain 6 elements for a 2D matrix or 16 elements for a 3D matrix.");
+        return nullptr;
+    }
+    return new DOMMatrix(float32Array->data(), float32Array->length());
+}
+
+DOMMatrix* DOMMatrix::fromFloat64Array(DOMFloat64Array* float64Array, ExceptionState& exceptionState)
+{
+    if (float64Array->length() != 6 && float64Array->length() != 16) {
+        exceptionState.throwTypeError("The sequence must contain 6 elements for a 2D matrix or 16 elements for a 3D matrix.");
+        return nullptr;
+    }
+    return new DOMMatrix(float64Array->data(), float64Array->length());
+}
+
+template <typename T>
+DOMMatrix::DOMMatrix(T sequence, int size) : DOMMatrixReadOnly(sequence, size)
+{
+}
+
 DOMMatrix::DOMMatrix(const TransformationMatrix& matrix, bool is2D)
 {
     m_matrix = TransformationMatrix::create(matrix);
     m_is2D = is2D;
 }
 
 void DOMMatrix::setIs2D(bool value)
 {
     if (m_is2D)
         m_is2D = value;
@@ skipping 103 matching lines @@
         setM41(NAN);
         setM42(NAN);
         setM43(NAN);
         setM44(NAN);
         setIs2D(false);
     }
     return this;
 }
 
 } // namespace blink