54 lines
2.0 KiB
TypeScript
54 lines
2.0 KiB
TypeScript
import { expect, it } from "vitest";
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import { DEFAULT_GROUND_COLOR, type SceneSettings } from "../schema/directorProject";
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import { getSceneGroupTransform } from "./sceneTransform";
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function createScene(patch: Partial<SceneSettings> = {}): SceneSettings {
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return {
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scale: 1,
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position: [0, 0, 0],
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rotation: [0, 0, 0],
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backgroundColor: "#000000",
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panoramaYaw: 0,
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panoramaRadius: 60,
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showLabels: true,
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captureShowGrid: false,
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snapToGrid: false,
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showGround: true,
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groundColor: DEFAULT_GROUND_COLOR,
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groundOpacity: 0.4,
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groundHeight: 0,
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...patch,
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};
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}
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it("maps the scene scale onto all three axes", () => {
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expect(getSceneGroupTransform(createScene({ scale: 2.5 }))).toEqual({
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position: [0, 0, 0],
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rotation: [0, 0, 0],
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scale: [2.5, 2.5, 2.5],
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});
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});
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it("converts the scene rotation from degrees to radians for the Three.js group", () => {
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const transform = getSceneGroupTransform(createScene({ position: [1, 3, -2], rotation: [0, 90, 180] }));
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expect(transform.position).toEqual([1, 3, -2]);
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expect(transform.rotation[0]).toBeCloseTo(0);
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expect(transform.rotation[1]).toBeCloseTo(Math.PI / 2);
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expect(transform.rotation[2]).toBeCloseTo(Math.PI);
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expect(transform.scale).toEqual([1, 1, 1]);
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});
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it("keeps the ground plane and the viewport grid on the same world height", () => {
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const scene = createScene({ scale: 1.5, position: [0, 2, 0], groundHeight: 1.2 });
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const transform = getSceneGroupTransform(scene);
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const gridElevation = 0.002;
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// 地面：局部 y = groundHeight；网格：局部 y = groundHeight + 抬升
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// 两者共用同一个场景组 → 世界高度只差 抬升 × 场景缩放，永远不会分叉成两层地面
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const groundWorldY = transform.position[1] + scene.groundHeight * transform.scale[1];
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const gridWorldY = transform.position[1] + (scene.groundHeight + gridElevation) * transform.scale[1];
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expect(gridWorldY - groundWorldY).toBeCloseTo(gridElevation * scene.scale, 6);
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});
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