usePostProcessStage

将 PostProcessStage 响应式添加到 Cesium 的后置处理集合中。输入变化时，上一份后置处理会自动移除。

Usage

import { PostProcessStage } from 'cesium';
import { usePostProcessStage } from 'vesium';
import { ref } from 'vue';

const enabled = ref(true);

const stage = usePostProcessStage(() => new PostProcessStage({
  fragmentShader: `
    uniform sampler2D colorTexture;
    varying vec2 v_textureCoordinates;
    void main() {
      gl_FragColor = texture2D(colorTexture, v_textureCoordinates);
    }
  `,
}), {
  isActive: enabled,
});

重载

• 传入单个 stage 时，返回 ComputedRef<T | undefined>。
• 传入 stage 数组时，返回 ComputedRef<T[] | undefined>。

配置项

• collection 用于指定目标 PostProcessStageCollection。
• isActive 控制当前是否生效。
• evaluating 用于接收异步解析状态。

说明

• 默认集合为 viewer.scene.postProcessStages。
• 输入值可以是普通值、getter、ref 或异步 getter。

Type Definitions

import type { PostProcessStage, PostProcessStageCollection } from 'cesium';
import type { ComputedRef, MaybeRefOrGetter, Ref } from 'vue';
import type { MaybeRefOrAsyncGetter } from '../toPromiseValue';
export interface UsePostProcessStageOptions {
    /**
     * The collection of PostProcessStage to be added
     * @default useViewer().scene.postProcessStages
     */
    collection?: PostProcessStageCollection;
    /**
     * default value of `isActive`
     * @default true
     */
    isActive?: MaybeRefOrGetter<boolean>;
    /**
     * Ref passed to receive the updated of async evaluation
     */
    evaluating?: Ref<boolean>;
}
/**
 * Add `PostProcessStage` to the `PostProcessStageCollection`, automatically update when the data changes, and destroy the side effects caused by the previous `PostProcessStage`.
 *
 * Overload 1: Parameter supports passing in a single value.
 */
export declare function usePostProcessStage<T extends PostProcessStage = PostProcessStage>(stage?: MaybeRefOrAsyncGetter<T | undefined>, options?: UsePostProcessStageOptions): ComputedRef<T | undefined>;
/**
 * Add `PostProcessStage` to the `PostProcessStageCollection`, automatically update when the data changes, and destroy the side effects caused by the previous `PostProcessStage`.
 *
 * Overload 2: Parameter supports passing in an array.
 */
export declare function usePostProcessStage<T extends PostProcessStage = PostProcessStage>(stages?: MaybeRefOrAsyncGetter<Array<T | undefined> | undefined>, options?: UsePostProcessStageOptions): ComputedRef<T[] | undefined>;
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