Merge branch '1.87.1' into 'develop'

# GWT Cesium Wrapper

[CesiumJS](http://cesiumjs.org) GWT Wrapper based on JsInterop 1.0.2 for [GWT 2.8.x](http://www.gwtproject.org/release-notes.html#Release_Notes_2_8_2).

Showcase:

 - [Release](https://gis4fun.org/cesiumjs4gwt-showcase/)

 - [Develop](https://gis4fun.org/cesiumjs4gwt-showcase-snapshot/)

Java API looks like as JavaScript.

What was done:

- [x] CesiumJS API like as native JavaScript. Based on CesiumJS source code

    <parent>

        <artifactId>cesiumjs4gwt</artifactId>

        <groupId>org.cesiumjs</groupId>

        <version>1.87.0</version>

        <version>1.81.1-SNAPSHOT</version>

    </parent>

    <name>CesiumJS GWT Wrapper</name>

            return options;

        }

    }

    /**

     * Flags to enable experimental features in CesiumJS. Stability and performance

     * may not be optimal when these are enabled. Experimental features are subject

     * to change without Cesium's standard deprecation policy.

     * <p>

     * Experimental features must still uphold Cesium's quality standards. Here

     * are some guidelines:

     * </p>

     * <ul>

     *   <li>Experimental features must have high unit test coverage like any other feature.</li>

     *   <li>Experimental features are intended for large features where there is benefit of merging some of the

     *   code sooner (e.g. to avoid long-running staging branches)</li>

     *   <li>Experimental flags should be short-lived. Make it clear in the PR what it would take to promote the

     *   feature to a regular feature.</li>

     *   <li>To avoid cluttering the code, check the flag in as few places as possible. Ideally this would be a single place.</li>

     * </ul>

     *

     * experimental: This feature is using part of the 3D Tiles spec that is not final and is subject to change

     * without Cesium's standard deprecation policy.

     */

    @JsType(isNative = true, namespace = "Cesium", name = "ExperimentalFeatures")

    public static class ExperimentalFeatures {

        /**

         * Toggles the usage of the ModelExperimental class.

         */

        public static boolean enableModelExperimental;

    }

}

import org.cesiumjs.cs.promise.Promise;

import org.cesiumjs.cs.scene.enums.Cesium3DTileColorBlendMode;

import org.cesiumjs.cs.scene.enums.ClassificationType;

import org.cesiumjs.cs.scene.experimental.CustomShader;

import org.cesiumjs.cs.scene.options.Cesium3DTilesetOptions;

/**

     */

    @JsProperty

    public double cullRequestsWhileMovingMultiplier;

    /**

     * A custom shader to apply to all tiles in the tileset. Only used for contents that use ModelExperimental. Using

     * custom shaders with a Cesium3DTileStyle may lead to undefined behavior.

     * To enable ModelExperimental, set ExperimentalFeatures.enableModelExperimental to true.

     *

     * Default: undefined

     */

    @JsProperty

    public CustomShader customShader;

    /**

     * For debugging only. Determines if only the tiles from last frame should be

     * used for rendering. Defaule: false;

/*

 * Copyright 2021 iserge, Gis4Fun.

 *

 * 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.

 */

package org.cesiumjs.cs.scene.enums;

import jsinterop.annotations.JsProperty;

import jsinterop.annotations.JsType;

/**

 * An enum describing the x, y, and z axes and helper conversion functions.

 */

@JsType(isNative = true, namespace = "Cesium", name = "Axis")

public class Axis {

    /**

     * Denotes the x-axis.

     */

    @JsProperty(name = "X")

    public native Number X();

    /**

     * Denotes the y-axis.

     */

    @JsProperty(name = "Y")

    public native Number Y();

    /**

     * Denotes the z-axis.

     */

    @JsProperty(name = "Z")

    public native Number Z();

}