Function addTextures

src/common/mapping/utils/L7LayerUtil.js:1655–1679

* 批量添加L7texture使用到的图片，从雪碧图上裁剪 * @param layers * @param sprite * @param scene

({ layers, sprite, spriteJson, scene, options })

   * @param scene
   */
  async function addTextures({ layers, sprite, spriteJson, scene, options }) {
    const timestamp = +new Date();
    for (let index = 0; index < layers.length; index++) {
      const l = layers[index];
      const texture = (l.texture || {}).values;
      const iconInfo = spriteJson[texture];
      if (iconInfo) {
        const image = await changeSpriteIconToImgData(sprite, { ...iconInfo, id: texture }, options);
        const style = l.style || {};
        const color = style.textureColor,
          rotate = style.textureRotate;
        if (color || rotate) {
          const modifiedImg = await processImage(imgDataToBlob(image), {
            color,
            rotate
          });
          const newImageId = `${texture}_${timestamp}_${index}`;
          Object.assign(l.texture || {}, { values: newImageId });
          scene.addImage(newImageId, modifiedImg);
        } else if (!scene.hasImage(texture)) {
          scene.addImage(texture, imgDataToBlob(image));
        }
      }
    }
  }

  /**
   * 过滤统计图表数据