import { describe, expect, it } from "vitest"; import { createBoxBrush } from "../../src/document/brushes"; import { getBoxBrushBounds, getBoxBrushCornerPositions } from "../../src/geometry/box-brush"; describe("box brush geometry", () => { it("builds finite bounds and eight corner positions from canonical box data", () => { const brush = createBoxBrush({ center: { x: 2, y: 4, z: -3 }, size: { x: 6, y: 2, z: 4 } }); expect(getBoxBrushBounds(brush)).toEqual({ min: { x: -1, y: 3, z: -5 }, max: { x: 5, y: 5, z: -1 } }); const corners = getBoxBrushCornerPositions(brush); expect(corners).toHaveLength(8); expect(new Set(corners.map((corner) => `${corner.x}:${corner.y}:${corner.z}`)).size).toBe(8); expect(corners.every((corner) => Number.isFinite(corner.x) && Number.isFinite(corner.y) && Number.isFinite(corner.z))).toBe(true); }); it("derives rotated world bounds from authored box rotation without changing stable corner count", () => { const brush = createBoxBrush({ center: { x: 0, y: 1, z: 0 }, rotationDegrees: { x: 0, y: 45, z: 0 }, size: { x: 2, y: 2, z: 4 } }); const bounds = getBoxBrushBounds(brush); const corners = getBoxBrushCornerPositions(brush); expect(bounds.min.x).toBeCloseTo(-2.1213203436); expect(bounds.max.x).toBeCloseTo(2.1213203436); expect(bounds.min.z).toBeCloseTo(-2.1213203436); expect(bounds.max.z).toBeCloseTo(2.1213203436); expect(corners).toHaveLength(8); expect(new Set(corners.map((corner) => `${corner.x}:${corner.y}:${corner.z}`)).size).toBe(8); }); });