import * as THREE from 'three/webgpu';
export interface FontGlyphMetrics {
    char: string;
    data: Uint8ClampedArray;
    width: number;
    height: number;
    glyphWidth: number;
    glyphHeight: number;
    glyphTop: number;
    glyphLeft: number;
    glyphAdvance: number;
}
export interface FontAtlasGlyph extends FontGlyphMetrics {
    atlasX: number;
    atlasY: number;
}
export interface FontLayoutGlyph extends FontAtlasGlyph {
    left: number;
    top: number;
    boxTop: number;
    boxHeight: number;
}
export interface FontLayoutInfo {
    glyphs: FontLayoutGlyph[];
    width: number;
    height: number;
}
/** Public surface of the legacy canvas-backed font atlas manager. */
export interface TextFontManager {
    fontFamily: string;
    fontWeight: string;
    fontStyle: string;
    fontSize: number;
    width: number;
    height: number;
    glyphs: Map<string, FontAtlasGlyph>;
    texture: THREE.DataTexture;
    version: number;
    canvas?: HTMLCanvasElement | OffscreenCanvas | null | undefined;
    lineHeight?: number | undefined;
    maxAscent?: number | undefined;
    margin?: number | undefined;
    glyphSize?: number | undefined;
    needsUpdate?: boolean | undefined;
    getGlyphInfo(char: string): FontGlyphMetrics | null;
    initCanvas(): void;
    update(chars: string): void;
    getLayoutInfo(text?: string): FontLayoutInfo;
}
declare const fontManager: TextFontManager;
declare const fontGeometry: THREE.BufferGeometry;
export { fontManager, fontGeometry };