import type { WebGLContextManager } from "../../../webgl/context-manager";
import type { CandlestickChart } from "../candlestick";
type GL = WebGL2RenderingContext | WebGLRenderingContext;
/**
 * Candlestick body + wick glyph. Owns the body and wick programs +
 * their corner/segment/instance buffers, and the persistent up/down
 * wick vertex buffers built per data load.
 */
export declare class BodyWickGlyph {
    private _program;
    private _buffers;
    /**
     * Lazily compile the body and wick programs and create their static
     * GPU buffers (corner / quad). Cached for the lifetime of the chart.
     */
    private ensureProgram;
    /**
     * Drop persistent body + wick vertex buffers. Called from data-load
     * (before `rebuildBuffers`) and from chart-destroy paths.
     */
    invalidateBuffers(chart: CandlestickChart): void;
    /**
     * Pre-build the per-instance body buffer (interleaved
     * [xCenter, halfWidth, y0, y1, r, g, b]) and the up/down wick
     * line-segment buffers. Single GPU upload per buffer per data load.
     */
    rebuildBuffers(chart: CandlestickChart, glManager: WebGLContextManager): void;
    draw(chart: CandlestickChart, gl: GL, glManager: WebGLContextManager, projection: Float32Array): void;
    /**
     * Free program-local GPU buffers + persistent vertex buffers. The
     * shader programs themselves are owned by `WebGLContextManager.shaders`
     * and not freed here.
     */
    destroy(chart: CandlestickChart): void;
}
export {};