cesiumDemo/Source/DataSources/createMaterialPropertyDescriptor.js

import Color from '../Core/Color.js';
import DeveloperError from '../Core/DeveloperError.js';
import Resource from '../Core/Resource.js';
import ColorMaterialProperty from './ColorMaterialProperty.js';
import createPropertyDescriptor from './createPropertyDescriptor.js';
import ImageMaterialProperty from './ImageMaterialProperty.js';

    function createMaterialProperty(value) {
        if (value instanceof Color) {
            return new ColorMaterialProperty(value);
        }

        if (typeof value === 'string' || value instanceof Resource || value instanceof HTMLCanvasElement || value instanceof HTMLVideoElement) {
            var result = new ImageMaterialProperty();
            result.image = value;
            return result;
        }

        //>>includeStart('debug', pragmas.debug);
        throw new DeveloperError('Unable to infer material type: ' + value);
        //>>includeEnd('debug');
    }

    /**
     * @private
     */
    function createMaterialPropertyDescriptor(name, configurable) {
        return createPropertyDescriptor(name, configurable, createMaterialProperty);
    }
export default createMaterialPropertyDescriptor;