import type { PointCloudNode } from './point-cloud-node.js';
export type PointColorMode = 'rgb' | 'classification' | 'intensity' | 'height' | 'fixed' | 'deviation';
export type PointSizeMode = 'fixed-px' | 'adaptive-world' | 'attenuated';
/** Number of u32 words in the 256-bit LAS class-visibility mask. */
export declare const CLASS_MASK_WORDS = 8;
/**
 * Normalize the public `classMask` option into the 8-word (256-bit)
 * uniform layout. Accepts:
 *   - `undefined`          → all classes visible
 *   - `number` (legacy)    → bits 0..31 as given; classes 32..255 stay
 *                            visible, matching the old 32-bit semantics
 *   - `ArrayLike<number>`  → up to 8 words, LSB-first; missing or
 *                            non-finite words default to all-visible
 */
export declare function normalizeClassMask(mask: number | ArrayLike<number> | undefined): Uint32Array;
export declare const COLOR_MODE_INDEX: Record<PointColorMode, number>;
export declare const SIZE_MODE_INDEX: Record<PointSizeMode, number>;
export interface PointUniformInputs {
    viewProj: Float32Array;
    fixedColor: [number, number, number, number];
    colorMode: PointColorMode;
    sizeMode: PointSizeMode;
    pointSize: number;
    worldRadius: number;
    roundShape: boolean;
    sectionNormal: [number, number, number];
    sectionDist: number;
    sectionEnabled: boolean;
    heightMin: number;
    heightMax: number;
    viewportW: number;
    viewportH: number;
    /** 256-bit LAS class-visibility mask, 8 u32 words LSB-first (#1783). */
    classMask: Uint32Array;
    /** Preview stride — 1 = full density, N = render every Nth point. */
    previewStride: number;
    /** BIM ↔ scan deviation heatmap range (metres). */
    deviationCenterOffset: number;
    deviationHalfRange: number;
}
/**
 * Pack the per-asset point-cloud uniform block into `scratch` and copy
 * it onto the GPU. The two scratch typed-arrays must alias the same
 * underlying buffer so we can write floats and packed u32 flags in one
 * pass.
 */
export declare function writePointCloudUniforms(device: GPUDevice, scratch: Float32Array, scratchU32: Uint32Array, node: PointCloudNode, inputs: PointUniformInputs): void;
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