import { Bounds3D, Axis3DConfig } from './types';

/** Axis label info for text overlay rendering */
export interface AxisLabel3D {
    text: string;
    worldPosition: [number, number, number];
    axis: 'x' | 'y' | 'z' | 'title';
    color: [number, number, number];
}
/** Full axis configuration with defaults applied */
export interface Axes3DOptions {
    /** X-axis configuration */
    xAxis?: Axis3DConfig & {
        label?: string;
        tickFormat?: (v: number) => string;
    };
    /** Y-axis configuration */
    yAxis?: Axis3DConfig & {
        label?: string;
        tickFormat?: (v: number) => string;
    };
    /** Z-axis configuration */
    zAxis?: Axis3DConfig & {
        label?: string;
        tickFormat?: (v: number) => string;
    };
    /** Show axis lines */
    showAxes?: boolean;
    /** Show wall grids */
    showWallGrids?: boolean;
    /** Show floor grid (XZ plane) */
    showFloorGrid?: boolean;
    /** Grid line color */
    gridColor?: [number, number, number];
    /** Grid line opacity */
    gridOpacity?: number;
    /** Wall grid opacity (slightly more transparent) */
    wallGridOpacity?: number;
    /** Number of ticks per axis */
    tickCount?: number;
    /** Axis line width */
    lineWidth?: number;
    /** Box wireframe color */
    boxColor?: [number, number, number];
    /** Box wireframe opacity */
    boxOpacity?: number;
}
export declare class Axes3D {
    private gl;
    private axisVAO;
    private axisPositionBuffer;
    private axisColorBuffer;
    private gridVAO;
    private gridPositionBuffer;
    private gridColorBuffer;
    private boxVAO;
    private boxPositionBuffer;
    private boxColorBuffer;
    private lineProgram;
    private lineUniforms;
    private axisVertexCount;
    private gridVertexCount;
    private boxVertexCount;
    private bounds;
    private labels;
    private options;
    constructor(gl: WebGL2RenderingContext, options?: Axes3DOptions);
    private initLineShader;
    private initBuffers;
    /**
     * Update axes geometry based on data bounds
     */
    updateBounds(bounds: Bounds3D): void;
    private buildBoxGeometry;
    private buildGridGeometry;
    private buildAxisGeometry;
    private buildLabels;
    /**
     * Render axes and grid
     */
    render(viewProjectionMatrix: Float32Array): void;
    private renderLines;
    /**
     * Get labels for 2D text overlay rendering.
     * Returns world positions that need to be projected to screen coordinates.
     */
    getLabels(): AxisLabel3D[];
    /**
     * Project a 3D world position to 2D screen coordinates.
     */
    projectToScreen(worldPos: [number, number, number], viewProjectionMatrix: Float32Array, canvasWidth: number, canvasHeight: number): {
        x: number;
        y: number;
        visible: boolean;
    };
    /**
     * Update options
     */
    setOptions(options: Partial<Axes3DOptions>): void;
    /**
     * Cleanup resources
     */
    destroy(): void;
}