import type { mat4, vec3 } from '@predy-js/math';
import type { ValueGetter } from '../../math/ValueGetter';
import type { Texture, Renderer, ShaderMarcos } from '@predy-js/render-interface';
import { Mesh, Geometry } from '@predy-js/render-interface';
import type { MeshRendererOptions } from './ParticleSystem';
import type { GradientColorValue, ParticleTrail, SplitParameter } from '@predy-js/specification';
export type TrailMeshConstructor = {
    maxTrailCount: number;
    pointCountPerTrail: number;
    colorOverLifetime: GradientColorValue;
    texture: Texture;
    minimumVertexDistance: number;
    blending: number;
    widthOverTrail: ValueGetter<number>;
    colorOverTrail: GradientColorValue;
    order: number;
    _matrix?: mat4;
    opacityOverLifetime: ValueGetter<number>;
    occlusion: boolean;
    transparentOcclusion: boolean;
    lifetime: ValueGetter<number>;
    mask: number;
    shaderCachePrefix: string;
    maskMode: number;
    textureSplits?: SplitParameter[];
    name: string;
};
type TrailPointOptions = {
    lifetime: number;
    color: number[];
    size: number;
    time: number;
};
export declare function getTrailMeshShader(trails: ParticleTrail, renderer: Renderer, particleMaxCount: number, name: string, env: string): {
    vertex: string;
    fragment: string;
    marcos: ShaderMarcos;
    downgrade: boolean;
    shared: boolean;
    name: string;
    cacheId: string;
    mtlSource: any;
    mtlVertex: string;
    mtlFragment: string;
};
export declare class TrailMesh {
    mesh: Mesh;
    maxTrailCount: any;
    constructor(props: TrailMeshConstructor, options: MeshRendererOptions);
    _pointStart: vec3[];
    geometry: Geometry;
    _trailCursors: Uint16Array;
    lifetime: ValueGetter<number>;
    pointCountPerTrail: number;
    minimumVertexDistance: number;
    useAttributeTrailStart: boolean;
    checkVertexDistance: boolean;
    get time(): any;
    set time(t: any);
    setTimeAndOpacity(time: number, opacity: number): void;
    addPoint(trailIndex: number, point: vec3, opt: TrailPointOptions): void;
    set modelMatrix(m4: mat4);
    getPoint(trail: any, index: any, out: any): any;
    clearAllTrails(): void;
    reverseTime(time: any): void;
    clearTrail(index: any): void;
    getPointStartPos(index: any): vec3;
    setPointStartPos(index: any, pos: any): void;
}
export {};