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truewhile
180 lines
7.6 KiB
TypeScript
180 lines
7.6 KiB
TypeScript
import {
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detectVr360Profile,
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normalizeVr360Profile,
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sameVr360Profile,
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vr360FrameUv,
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type Vr360Profile,
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} from './vr360.ts'
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import {
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applyDirection,
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applyViewOffset,
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cameraForward,
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cameraFromDeviceOrientation,
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cameraFromYawPitch,
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forwardPitch,
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forwardYaw,
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multiply3,
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perspectiveMatrix,
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rotationY,
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rotationZ,
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transpose3,
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viewMatrixFromCamera,
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} from './vr360Math.ts'
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function check(name: string, condition: boolean) {
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if (!condition) throw new Error(`vr360: ${name}`)
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}
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function close(a: number, b: number, tolerance = 1e-6): boolean {
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return Math.abs(a - b) <= tolerance
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}
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function closeAll(a: number[], b: number[], tolerance = 1e-6): boolean {
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return a.length === b.length && a.every((value, index) => close(value, b[index], tolerance))
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}
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function profileOf(profile: Vr360Profile): string {
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return `${profile.projection}/${profile.stereo}`
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}
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// ---------- 命名/画幅识别 ----------
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const plain = detectVr360Profile({ title: '普通电影', path: '/media/电影/movie.mkv', width: 1920, height: 1080 })
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check('普通素材不自动进入 VR', !plain.confident)
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check('普通素材默认 360 单眼', profileOf(plain.profile) === 'equirect360/mono')
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const pano360 = detectVr360Profile({
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title: '全景演示',
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path: '/media/360/equirect_demo.mp4',
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width: 3840,
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height: 1920,
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})
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check('360 关键词可识别', pano360.confident && pano360.profile.projection === 'equirect360')
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check('2:1 的 360 保持单眼', pano360.profile.stereo === 'mono')
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const vr360Sbs = detectVr360Profile({ path: '/media/vr/vr360-sbs-8k.mp4', width: 7680, height: 1920 })
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check('4:1 画幅识别为左右并排', vr360Sbs.profile.stereo === 'sbs')
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const ou360 = detectVr360Profile({ path: '/media/vr/pano360-ou.mp4', width: 3840, height: 3840 })
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check('1:1 的 360 识别为上下并排', ou360.profile.stereo === 'ou')
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const fisheye = detectVr360Profile({ path: '/media/vr/abc-fisheye-180.mp4', width: 1920, height: 1920 })
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check('鱼眼关键词优先于其它信号', fisheye.profile.projection === 'fisheye180')
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const vr180Sbs = detectVr360Profile({
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path: '/media/云下载/sivr-270/sivr-270-1.mp4',
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width: 3840,
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height: 1920,
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})
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check('编号里的 vr 可识别为 VR180', vr180Sbs.confident && vr180Sbs.profile.projection === 'equirect180')
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check('VR180 的 2:1 画幅为左右并排', vr180Sbs.profile.stereo === 'sbs')
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const vr180Mono = detectVr360Profile({ path: '/media/vr/vr180-mono.mp4', width: 1920, height: 1920 })
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check('VR180 的 1:1 画幅为单眼', vr180Mono.profile.stereo === 'mono')
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const vr180Ou = detectVr360Profile({ path: '/media/vr/vr180-tb.mp4', width: 1920, height: 3840 })
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check('VR180 的 1:2 画幅为上下并排', vr180Ou.profile.stereo === 'ou')
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const topBottom = detectVr360Profile({ path: '/media/vr/vr360-top-bottom.mp4' })
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check('top-bottom 关键词为上下并排', topBottom.profile.stereo === 'ou')
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// 回归：真实媒体库里出现过的误判（单词里含 vr、分辨率写法含 360）。
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const valvrave = detectVr360Profile({
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title: '革命机Valvrave',
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path: '/media/anime/2013/[革命机] Valvrave the Liberator (2013)/01.mkv',
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})
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check('单词里的 vr 不误判（Valvrave）', !valvrave.confident)
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check('误判时仍给出可用的默认配置', profileOf(valvrave.profile) === 'equirect360/mono')
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const resolution360p = detectVr360Profile({ path: '/media/movie/movie-360p.mp4', width: 640, height: 360 })
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check('360p 分辨率写法不误判', !resolution360p.confident)
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const titleWithVrWord = detectVr360Profile({ title: '某动画 VR 特别篇', path: '/media/anime/01.mkv' })
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check('标题里的独立 VR 词元可识别', titleWithVrWord.confident)
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const ipvr = detectVr360Profile({ path: '/media/云下载/ipvr00192pl/ipvr00192.part2.mp4' })
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check('编号形态 ipvr00192 可识别', ipvr.confident && ipvr.profile.projection === 'equirect180')
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// ---------- 立体裁切与偏好归一化 ----------
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check('单眼不裁切', closeAll(vr360FrameUv('mono').scale, [1, 1]))
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check('左右并排取左半张', closeAll(vr360FrameUv('sbs').scale, [0.5, 1]))
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check('上下并排取上半张', closeAll(vr360FrameUv('ou').scale, [1, 0.5]))
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check('并排画面不做偏移', closeAll(vr360FrameUv('sbs').offset, [0, 0]))
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check('未知投影回退到 360 全景', normalizeVr360Profile({ projection: 'nope', stereo: 'nope' }).projection === 'equirect360')
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check('未知布局回退到单眼', normalizeVr360Profile({}).stereo === 'mono')
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check(
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'相同配置判定相等',
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sameVr360Profile({ projection: 'equirect180', stereo: 'sbs' }, { projection: 'equirect180', stereo: 'sbs' }),
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)
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check(
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'不同配置判定不等',
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!sameVr360Profile({ projection: 'equirect180', stereo: 'sbs' }, { projection: 'equirect180', stereo: 'ou' }),
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)
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// ---------- 相机姿态与设备陀螺仪 ----------
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const identityForward = cameraForward(new Float32Array([1, 0, 0, 0, 1, 0, 0, 0, 1]))
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check('单位姿态朝向地面（设备平放）', closeAll([...identityForward], [0, 0, -1]))
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const level = cameraFromYawPitch(0, 0)
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check('默认视角水平看向正前方', closeAll([...cameraForward(level)], [0, 1, 0]))
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const east = cameraFromYawPitch(Math.PI / 2, 0)
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check('方位角 90° 转向正东', closeAll([...cameraForward(east)], [1, 0, 0], 1e-6))
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const up = cameraFromYawPitch(0, Math.PI / 2)
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check('俯仰角 90° 抬头看天', closeAll([...cameraForward(up)], [0, 0, 1], 1e-6))
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const northEast = cameraFromYawPitch(Math.PI / 4, 0)
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check('方位角 45° 落在东北方向', close(forwardYaw(cameraForward(northEast)), Math.PI / 4))
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const tilted = cameraFromYawPitch(0.3, -0.4)
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check('朝向角可反解出方位角', close(forwardYaw(cameraForward(tilted)), 0.3, 1e-6))
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check('朝向角可反解出俯仰角', close(forwardPitch(cameraForward(tilted)), -0.4, 1e-6))
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check(
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'旋转矩阵转置等于反向旋转',
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closeAll([...transpose3(rotationY(0.7))], [...rotationY(-0.7)], 1e-6),
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)
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check(
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'正反旋转相乘为单位矩阵',
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closeAll(
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[...multiply3(rotationZ(1.1), rotationZ(-1.1))],
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[1, 0, 0, 0, 1, 0, 0, 0, 1],
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1e-6,
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),
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)
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// 视图矩阵 = 相机姿态的逆（纯旋转）
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const view = viewMatrixFromCamera(east)
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check('视图矩阵为相机矩阵的转置', closeAll([...view], [...transpose3(east)], 1e-6))
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// 设备姿态约定（与 W3C 规范一致）：相机看向设备背面，
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// 因此设备平放时（alpha 任意、beta = 0）视线朝下。
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const flat = cameraFromDeviceOrientation(Math.PI / 3, 0, 0, 0)
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check('设备平放时看向地面', closeAll([...cameraForward(flat)], [0, 0, -1], 1e-6))
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// 竖持手机（beta = 90°）时视线水平
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const portrait = cameraFromDeviceOrientation(0, Math.PI / 2, 0, 0)
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check('竖持手机时视线水平', close(cameraForward(portrait)[2], 0, 1e-6))
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check('竖持手机时视线朝北', close(forwardYaw(cameraForward(portrait)), 0, 1e-6))
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// 横屏（屏幕旋转 90°）时相机「上方向」跟随屏幕
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const landscape = cameraFromDeviceOrientation(0, Math.PI / 2, 0, Math.PI / 2)
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check('横屏时画面随屏幕转向', closeAll([...applyDirection(landscape, 0, 1, 0)], [1, 0, 0], 1e-6))
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// 陀螺仪开启瞬间的视角对齐：叠加偏移后朝向应等于对齐前记录的拖拽视角
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const aligned = applyViewOffset(cameraFromDeviceOrientation(0, Math.PI / 2, 0, 0), 0.5, 0.25)
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check('叠加偏移后方位角对齐', close(forwardYaw(cameraForward(aligned)), 0.5, 1e-6))
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check('叠加偏移后俯仰角对齐', close(forwardPitch(cameraForward(aligned)), 0.25, 1e-6))
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// ---------- 透视投影 ----------
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const projection = perspectiveMatrix(Math.PI / 2, 2, 0.1, 10)
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check('透视矩阵缩放项随视场角变化', close(projection[0], 0.5))
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check('透视矩阵写入 w = -1（右手系）', projection[11] === -1)
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console.log('vr360.test.ts: ok')
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