Function loadPGWImage

loadPGWImage(pngUrl: string, pgwUrl: string): Promise<ImageryProvider>
Load a PNG/JPG image plus its world file and return a SingleTileImageryProvider for Cesium.
Parameters
- pngUrl: string
  Image URL.
- pgwUrl: string
  PGW world file URL.
Returns Promise<ImageryProvider>
Cesium provider for use with imagery layers.
Example
```
const provider = await loadPGWImage('terrain.png', 'terrain.pgw');
viewer.imageryLayers.addImageryProvider(provider);
```
- Defined in src/Core/Loader/PNGImageLoader.ts:97