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ARKitͷͨΊͷ
3Dࢉ
KBOY@ےΤϯδχΞ
2018.8.30@iOSDC 2018
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ࣗݾհ
ૣҴా͕ߍͰ͢
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ےΤϯδχΞͷܦྺ
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݄ ݄ ݄ ݄ ݄
Spajam༏ल
ϕετϘσΟδϟύϯग़
ے.swift։࠵
స৬υϥϑτग़ԋ
ॱ෩ຬൕʂʁ
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͔ͦ͠͠͏͘ͳ͍
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ےΤϯδχΞͷ಄
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ےΤϯδχΞ
ઓࠃ࣌
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ͦ͏ͩʂARͩʂ
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݄ ݄ ݄ ݄ ݄
Spajam༏ल
ϕετϘσΟδϟύϯग़
స৬υϥϑτग़ԋ
ے.swift։࠵
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Δ͔͠ͳ͍
͜ͷϏοάΣʔϒʹ
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ͱ͍͏͜ͱͰ
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ࠓ1݄ʹ
ARελʔτΞοϓJOIN
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Graffity Inc.
Ϧʔμʔ
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͜ΜͳΞϓϦ࡞ͬͯ·͢
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ͱ͍͏͜ͱͰARKitΛ
ؤுͬͯษڧ͠·ͨ͠
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͔͠͠
ͦ͏͘ͳ͍
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͜͏͍͏ྫΛ
ߟ͑ͯΈ·͠ΐ͏
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εΫϦʔϯ্ͷλοϓͨ͠෦ͷ
30cmલʹ
ඈߦػΛஔ͘
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No content
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༨༟ͬ͠ΐʂ
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λοϓδΣενϟʔ͔Β
x, yΛऔಘ,
z0.3mΛೖΕΕʂ
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݁Ռ
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No content
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શવग़ͯ͜ͳ͍…
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ཧ
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No content
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ݱ࣮
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No content
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ͬͺΓ
ͦ͏͘ͳ͍
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ͦΜͳ࣌ɺϦʔμʔ͕
खΛࠩ͠৳ͯ͘Εͨ
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3DϓϩάϥϛϯάΛ
ษڧ͢Ε༨༟ͩΑ
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Ϧʔμʔʂʂ
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ͦͯ͠
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3Dϓϩάϥϛϯά
Λษڧͨ͠ɻ
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ษڧʹͬͨຊ
IUUQTBN[OUP.4V.F( IUUQTBN[OUP1,'Z5
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ͱ͍͏͜ͱͰ
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ࠓօ͞Μʹ
Θ͔Γ͘͢
3DϓϩάϥϛϯάΛ
આ໌͠·͢
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ARKitͷͨΊͷ
3Dࢉ
KBOY@ےΤϯδχΞ
2018.8.30@iOSDC 2018
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ࠓͷΰʔϧ
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εΫϦʔϯ্ͷλοϓͨ͠෦ͷ
30cmલʹ
ඈߦػΛஔ͘
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No content
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ษڧ͢Δ͜ͱ
•࠲ඪܥΛΔ
•࠲ඪมͷϝιουΛΔ
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ARKitͰ͏࠲ඪܥ
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࠲ඪ·ͱΊ
ϫʔϧυ࠲ඪܥ
ΦϒδΣΫτ࠲ඪܥ
Χϝϥ࠲ඪܥ
εΫϦʔϯ࠲ඪܥ
iPad ProͰॻ͖·ͨ͠ɻ
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ϫʔϧυ࠲ඪܥ
͜ΕΑΓେ͖ͳ֎ଆͷ
࠲ඪۭؒͰදݱͰ͖ͳ͍
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ΦϒδΣΫτ࠲ඪܥ
ඈߦػࣗͷϩʔΧϧ࠲ඪʂ
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Χϝϥ࠲ඪܥ
ΧϝϥͷϩʔΧϧ࠲ඪ
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Χϝϥ࠲ඪܥ
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εΫϦʔϯ࠲ඪܥ
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εΫϦʔϯ࠲ඪܥ
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࠲ඪ·ͱΊ
ϫʔϧυ࠲ඪܥ
ΦϒδΣΫτ࠲ඪܥ
Χϝϥ࠲ඪܥ
εΫϦʔϯ࠲ඪܥ
iPad ProͰॻ͖·ͨ͠ɻ
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ΰʔϧͷ֬ೝ
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εΫϦʔϯ্ͷλοϓͨ͠෦ͷ
30cmલʹ
ඈߦػΛஔ͘
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30cm
εΫϦʔϯλοϓͷ
xy࠲ඪऔಘ
ϫʔϧυ࠲ඪʹมͯ͠
ͦ͜ʹஔ͘ʂ
Χϝϥͷ30cmલʹஔ͘
ϫʔϧυ࠲ඪʹม
ᶃ ᶄ
ᶅ
εΫϦʔϯ࠲ඪʹม
ᶆ
ᶄ’
εΫϦʔϯ࠲ඪʹม
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ᶃΧϝϥ࠲ඪͰ30cmલʹஔ͘
ϚΠφε
30cm
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No content
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ᶄϫʔϧυ࠲ඪʹม
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͋Δ࠲ඪܥ͔Β
͋Δ࠲ඪܥ
มͰ͖Δ
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ᶄ’εΫϦʔϯ࠲ඪʹม
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ϫʔϧυ࠲ඪܥ→εΫϦʔϯ࠲ඪܥ
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ᶅεΫϦʔϯλοϓͷxy࠲ඪऔಘ
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ᶆϫʔϧυ࠲ඪʹมͯ͠ஔ͘
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εΫϦʔϯ࠲ඪܥ→ϫʔϧυ࠲ඪܥ
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30cmલ
λοϓͨ͠Ґஔ
ม
ม
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ͦΕͧΕɺ߹ͷ͍͍
࠲ඪܥͰܭࢉ͢Δ
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ͪͳΈʹ
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εΫϦʔϯ࠲ඪܥ͚ͩ
ͰશͯΛදݱͰ͖Δ
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εΫϦʔϯλοϓͷ
xy࠲ඪऔಘ
ϫʔϧυ࠲ඪʹมͯ͠
ͦ͜ʹஔ͘ʂ
Χϝϥͷ30cmલʹஔ͘
ϫʔϧυ࠲ඪʹม
ᶃ ᶄ
ᶅ
εΫϦʔϯ࠲ඪʹม
ᶆ
ᶄ’
εΫϦʔϯ࠲ඪʹม
͜͜ল͚Δ
30cm
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͜͜ল͚Δ
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ͬͪ͜ͷํָ͕͡ΌΜʂ
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͔ͨ͠ʹ
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͜ͷ͍ίʔυͰߦ͚Δ
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No content
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Ͱ
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࣮
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͜ͷ0.996
Χϝϥ࠲ඪܥͷ0.3mͱ
ಉ͡ҙຯ
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0.996ͱ
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͜͜Ͱ࠲ඪܥͷ෮श
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0.0
1.0
εΫϦʔϯ࠲ඪܥͷ
z
0.001m
1000m
Χϝϥ࠲ඪܥͷ
z
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εΫϦʔϯ࠲ඪܥͷz
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https://developer.apple.com/documentation/scenekit/scnscenerenderer/1522631-unprojectpoint
εΫϦʔϯ࠲ඪܥͷ
z0.0~1.0
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Χϝϥ࠲ඪܥͷzʁ
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No content
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No content
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No content
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debugͯ͠ΈΔͱ
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No content
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zNearΛ
มԽͤͯ͞ΈΑ͏
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No content
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0.0
1.0
εΫϦʔϯ࠲ඪܥͷ
z
0.001m
1000m
Χϝϥ࠲ඪܥͷ
z
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εΫϦʔϯ࠲ඪͷz
vs
Χϝϥ࠲ඪͷz
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http://www.alecjacobson.com/weblog/?p=3835
-0.001
-1000
0.996
screenZ = f(n + cameraZ)/((f − n)cameraZ)
-0.3
screenZ
cameraZ
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screenZ = f(n + cameraZ)/((f − n)cameraZ)
screenZ = 1000(0.001 + (−0.3))/((1000 − 0.002)(−0.3))
f = 1000
n = 0.001
cameraZ = − 0.3
screenZ = 0.9966...
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࣮ʹ໘͍͘͞
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͜͜ল͚Δʂʁ
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ඞཁʂ
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ͱ͍͏͜ͱͰ
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࠲ඪมΛۦͯ͠
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No content
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ʂ
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͏ͪΐ͍ͬͯΈ·͠ΐ͏ʂ
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ඈߦػΛ֦େͨ͠Γɺ
ճసͤ͞Α͏ʂ
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֦େɾॖখ
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ճస (SCNVector4)
࣠
֯
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ճస(Euler angle)
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ճస (Euler angle)
x
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ճస (Euler angle)
Y
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ճస (Euler angle)
Z
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x Y Z
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Ҏ্
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͜͜·Ͱ͕ࢉ
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·ֶ͕ͩ͋Γ·͢ɻ
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Ͱ
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࠲ඪͷ֓೦Λཧղͯ͠
SceneKitARKitΛ
͍͜ͳͤΕྑ͍ɻ
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ֶʹ͍ͭͯQiitaͰɻ
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ARKitͷͨΊͷ
3D
ֶ
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ࠂ
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Graffity Inc.
ΤϯδχΞืूதʂ
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࠷ޙʹ
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ݸਓͰARKitͷಈըڭࡐ࡞த
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One More Thing
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ࠓΓ·͢
.kt
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ے.kt
w :BIPP-PEHF
w ݄
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͓ΘΓ