@allmaps/render/dist/renderers/IntArrayRenderer.js

Render functions for WebGL and image buffers

import { BaseRenderer } from "./BaseRenderer.js";
import { createWarpedMapFactory } from "../maps/WarpedMap.js";
import { CacheableIntArrayTile } from "../tilecache/CacheableIntArrayTile.js";
import { renderToIntArray } from "../shared/render-to-int-array.js";
const CHANNELS = 4;
class IntArrayRenderer extends BaseRenderer {
  getImageDataValue;
  getImageDataSize;
  constructor(getImageData, getImageDataValue, getImageDataSize, options) {
    super(
      CacheableIntArrayTile.createFactory(getImageData),
      createWarpedMapFactory(),
      options
    );
    this.getImageDataValue = getImageDataValue;
    this.getImageDataSize = getImageDataSize;
  }
  /**
   * Render the map for a given viewport.
   *
   * @param viewport - the viewport to render
   */
  async render(viewport) {
    this.viewport = viewport;
    await Promise.allSettled(this.loadMissingImageInfosInViewport());
    this.assureProjection();
    this.requestFetchableTiles();
    await this.tileCache.allRequestedTilesLoaded();
    const intArray = new Uint8ClampedArray(
      this.viewport.canvasSize[0] * this.viewport.canvasSize[1] * CHANNELS
    );
    await renderToIntArray(
      this.warpedMapList,
      this.tileCache,
      this.viewport,
      this.getImageDataValue,
      this.getImageDataSize,
      intArray
    );
    return intArray;
  }
}
export {
  IntArrayRenderer
};
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