import type { PointCloudMaterialLike } from './pointCloudLoader';
export declare const POINT_SIZE_TYPES: readonly ["fixed", "attenuated", "adaptive"];
export declare const POINT_SHAPES: readonly ["square", "circle", "paraboloid"];
export type PointSizeType = (typeof POINT_SIZE_TYPES)[number];
export type PointShape = (typeof POINT_SHAPES)[number];
/** How a cloud is drawn. One set per viewer, applied to every loaded cloud. */
export interface PointCloudAppearance {
    pointBudget: number;
    size: number;
    minSize: number;
    maxSize: number;
    opacity: number;
    sizeType: PointSizeType;
    shape: PointShape;
    showBoundingBoxes: boolean;
}
export declare const DEFAULT_APPEARANCE: PointCloudAppearance;
/** Keeps a partial update inside what the shader can render, so a bad input cannot blank the view. */
export declare function normalizeAppearance(current: PointCloudAppearance, patch: Partial<PointCloudAppearance>): PointCloudAppearance;
export declare function applyAppearance(material: PointCloudMaterialLike, appearance: PointCloudAppearance): void;
/** Undoes the additive, depth-test-off splat mode potree re-derives from opacity on every
 *  shader rebuild. Re-assert after anything that can rebuild. */
export declare function applyRenderState(material: PointCloudMaterialLike, appearance: PointCloudAppearance): void;
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