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