copy2d_util.ts

/**
 * @license
 * Copyright 2017 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.
 * =============================================================================
 */

export function validateShapes(
    sourceSize: [number, number], destSize: [number, number]) {
  const srcArea = sourceSize[0] * sourceSize[1];
  const dstArea = destSize[0] * destSize[1];
  if (srcArea !== dstArea) {
    const srcStr = `[${sourceSize[0]}, ${sourceSize[1]}]`;
    const dstStr = `[${destSize[0]}, ${destSize[1]}]`;
    throw new Error(
        `copy2D shapes have different areas:\n  sourceSize ${srcStr}` +
        `, area ${srcArea}\n  destSize ${dstStr}, area ${dstArea}`);
  }
}