import type { BlockShape, BlockCollisionHint, BlockShapeID, FaceDefinition } from "../BlockShape.ts";
import { FACE } from "../../utils/math.ts";
/**
 * Ramp (slope) block: rises from y=0 at z=0 to y=1 at z=1.
 *
 * Faces:
 *  - Bottom (NegY): full flat base quad
 *  - Back (PosZ, z=1): full-height quad wall
 *  - Left (NegX, x=0): right triangle
 *  - Right (PosX, x=1): right triangle
 *  - Slope: diagonal quad, normal [0, 1/√2, -1/√2] (up + toward -Z)
 *
 * Occlusion: only NegY and PosZ are fully covered.
 * Non-axis-aligned faces (the slope) use PosY as the culling direction —
 * the slope is hidden if a solid block sits directly above it.
 */
export declare class Ramp implements BlockShape {
    readonly id: BlockShapeID;
    readonly collisionHint: BlockCollisionHint;
    constructor(id?: BlockShapeID);
    readonly faces: readonly FaceDefinition[];
    occludes(face: FACE): boolean;
}
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