ARKitのための3D算数

iOSDC 2018

Transcript

1. ARKitͷͨΊͷ
   3Dࢉ਺
   KBOY@ے೑ΤϯδχΞ
   2018.8.30@iOSDC 2018
   

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2. ࣗݾ঺հ
   ૣҴా͕฼ߍͰ͢
   

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3. ے೑ΤϯδχΞͷܦྺ
   

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4. 
   
   
   
   
   ೥݄ ݄ ݄ ೥݄ ೥݄
   Spajam༏ल৆
   ϕετϘσΟδϟύϯग़৔
   ے೑.swift։࠵
   స৬υϥϑτग़ԋ
   ॱ෩ຬൕʂʁ
   

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5. ͔ͦ͠͠͏؁͘͸ͳ͍
   

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6. ے೑ΤϯδχΞͷ୆಄
   

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7. ے೑ΤϯδχΞ
   ઓࠃ࣌୅
   

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8. ͦ͏ͩʂARͩʂ
   

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9. 
   
   
   
   
   ೥݄ ݄ ݄ ೥݄ ೥݄
   Spajam༏ल৆
   ϕετϘσΟδϟύϯग़৔
   స৬υϥϑτग़ԋ
   ے೑.swift։࠵
   

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10. ৐Δ͔͠ͳ͍
    ͜ͷϏοά΢Σʔϒʹ
    

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11. ͱ͍͏͜ͱͰ
    

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12. ࠓ೥1݄ʹ
    ARελʔτΞοϓ΁JOIN
    

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13. Graffity Inc.
    Ϧʔμʔ
    

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14. ͜ΜͳΞϓϦ࡞ͬͯ·͢
    

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15. ͱ͍͏͜ͱͰARKitΛ
    ؤுͬͯษڧ͠·ͨ͠
    

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16. ͔͠͠
    ͦ͏؁͘͸ͳ͍
    

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17. ͜͏͍͏ྫΛ
    ߟ͑ͯΈ·͠ΐ͏
    

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18. εΫϦʔϯ্ͷλοϓͨ͠෦෼ͷ
    30cmલʹ
    ඈߦػΛஔ͘
    

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20. ༨༟ͬ͠ΐʂ
    

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21. λοϓδΣενϟʔ͔Β
    x, yΛऔಘ,
    z͸0.3mΛೖΕΕ͹׬੒ʂ
    

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22. ݁Ռ
    

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23. View Slide

24. શવग़ͯ͜ͳ͍…
    

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25. ཧ૝
    

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26. View Slide

27. ݱ࣮
    

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28. View Slide

29. ΍ͬͺΓ
    ͦ͏؁͘͸ͳ͍
    

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30. ͦΜͳ࣌ɺϦʔμʔ͕
    खΛࠩ͠৳΂ͯ͘Εͨ
    

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31. 3DϓϩάϥϛϯάΛ
    ษڧ͢Ε͹༨༟ͩΑ
    

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32. Ϧʔμʔʂʂ
    

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33. ͦͯ͠๻͸
    

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34. 3Dϓϩάϥϛϯά
    Λษڧͨ͠ɻ
    

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35. ษڧʹ࢖ͬͨຊ
    IUUQTBN[OUP.4V.F( IUUQTBN[OUP1,'Z5
    

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36. ͱ͍͏͜ͱͰ
    

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37. ࠓ೔͸օ͞Μʹ
    Θ͔Γ΍͘͢
    3DϓϩάϥϛϯάΛ
    આ໌͠·͢
    

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38. ARKitͷͨΊͷ
    3Dࢉ਺
    KBOY@ے೑ΤϯδχΞ
    2018.8.30@iOSDC 2018
    

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39. ࠓ೔ͷΰʔϧ
    

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40. εΫϦʔϯ্ͷλοϓͨ͠෦෼ͷ
    30cmલʹ
    ඈߦػΛஔ͘
    

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41. View Slide

42. ษڧ͢Δ͜ͱ
    •࠲ඪܥΛ஌Δ
    •࠲ඪม׵ͷϝιουΛ஌Δ
    

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43. ARKitͰ࢖͏࠲ඪܥ
    

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44. ࠲ඪ·ͱΊ
    ϫʔϧυ࠲ඪܥ
    ΦϒδΣΫτ࠲ඪܥ
    Χϝϥ࠲ඪܥ
    εΫϦʔϯ࠲ඪܥ
    iPad ProͰॻ͖·ͨ͠ɻ
    

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45. ϫʔϧυ࠲ඪܥ
    ͜ΕΑΓେ͖ͳ֎ଆͷ
    ࠲ඪۭؒͰදݱͰ͖ͳ͍
    

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46. ΦϒδΣΫτ࠲ඪܥ
    ඈߦػࣗ਎ͷϩʔΧϧ࠲ඪʂ
    

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47. Χϝϥ࠲ඪܥ
    ΧϝϥͷϩʔΧϧ࠲ඪ
    

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48. Χϝϥ࠲ඪܥ
    

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49. εΫϦʔϯ࠲ඪܥ
    

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50. εΫϦʔϯ࠲ඪܥ
    

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51. ࠲ඪ·ͱΊ
    ϫʔϧυ࠲ඪܥ
    ΦϒδΣΫτ࠲ඪܥ
    Χϝϥ࠲ඪܥ
    εΫϦʔϯ࠲ඪܥ
    iPad ProͰॻ͖·ͨ͠ɻ
    

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52. ΰʔϧͷ֬ೝ
    

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53. εΫϦʔϯ্ͷλοϓͨ͠෦෼ͷ
    30cmલʹ
    ඈߦػΛஔ͘
    

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54. 30cm
    εΫϦʔϯλοϓͷ
    xy࠲ඪऔಘ
    ϫʔϧυ࠲ඪʹม׵ͯ͠
    ͦ͜ʹஔ͘ʂ
    Χϝϥͷ30cmલʹஔ͘
    ϫʔϧυ࠲ඪʹม׵
    ᶃ ᶄ
    ᶅ
    εΫϦʔϯ࠲ඪʹม׵
    ᶆ
    ᶄ’
    εΫϦʔϯ࠲ඪʹม׵
    

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55. ᶃΧϝϥ࠲ඪͰ30cmલʹஔ͘
    ϚΠφε
    30cm
    

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56. View Slide

57. ᶄϫʔϧυ࠲ඪʹม׵
    

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58. ͋Δ࠲ඪܥ͔Β
    ͋Δ࠲ඪܥ΁
    ม׵Ͱ͖Δ
    

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59. ᶄ’εΫϦʔϯ࠲ඪʹม׵
    

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60. ϫʔϧυ࠲ඪܥ→εΫϦʔϯ࠲ඪܥ
    

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61. ᶅεΫϦʔϯλοϓͷxy࠲ඪऔಘ
    

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62. ᶆϫʔϧυ࠲ඪʹม׵ͯ͠ஔ͘
    

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63. εΫϦʔϯ࠲ඪܥ→ϫʔϧυ࠲ඪܥ
    

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64. 30cmલ
    λοϓͨ͠Ґஔ
    ม׵
    ม׵
    

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65. ͦΕͧΕɺ౎߹ͷ͍͍
    ࠲ඪܥͰܭࢉ͢Δ
    

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66. ͪͳΈʹ
    

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67. εΫϦʔϯ࠲ඪܥ͚ͩ
    Ͱ΋શͯΛදݱͰ͖Δ
    

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68. εΫϦʔϯλοϓͷ
    xy࠲ඪऔಘ
    ϫʔϧυ࠲ඪʹม׵ͯ͠
    ͦ͜ʹஔ͘ʂ
    Χϝϥͷ30cmલʹஔ͘
    ϫʔϧυ࠲ඪʹม׵
    ᶃ ᶄ
    ᶅ
    εΫϦʔϯ࠲ඪʹม׵
    ᶆ
    ᶄ’
    εΫϦʔϯ࠲ඪʹม׵
    ͜͜ল͚Δ
    30cm
    

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69. ͜͜ল͚Δ
    

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70. ͬͪ͜ͷํָ͕͡ΌΜʂ
    

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71. ͔ͨ͠ʹ
    

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72. ͜ͷ୹͍ίʔυͰߦ͚Δ
    

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73. View Slide

74. Ͱ΋
    

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75. 
    

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76. ࣮͸
    

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77. ͜ͷ0.996͸
    Χϝϥ࠲ඪܥͷ0.3mͱ
    ಉ͡ҙຯ
    

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78. 0.996ͱ͸
    

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79. ͜͜Ͱ࠲ඪܥͷ෮श
    

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80. 0.0
    1.0
    εΫϦʔϯ࠲ඪܥͷ
    z
    0.001m
    1000m
    Χϝϥ࠲ඪܥͷ
    z
    

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81. εΫϦʔϯ࠲ඪܥͷz
    

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82. https://developer.apple.com/documentation/scenekit/scnscenerenderer/1522631-unprojectpoint
    εΫϦʔϯ࠲ඪܥͷ
    z͸0.0~1.0
    

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83. Χϝϥ࠲ඪܥͷz͸ʁ
    

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84. View Slide

85. View Slide

86. View Slide

87. debugͯ͠ΈΔͱ
    

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88. View Slide

89. zNearΛ
    มԽͤͯ͞ΈΑ͏
    

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90. View Slide

91. 0.0
    1.0
    εΫϦʔϯ࠲ඪܥͷ
    z
    0.001m
    1000m
    Χϝϥ࠲ඪܥͷ
    z
    

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92. εΫϦʔϯ࠲ඪͷz
    vs
    Χϝϥ࠲ඪͷz
    

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93. 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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94. 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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95. ࣮ʹ໘౗͍͘͞
    
    

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96. ͜͜ল͚Δʂʁ
    

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97. ඞཁʂ
    

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98. ͱ͍͏͜ͱͰ
    

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99. ࠲ඪม׵Λۦ࢖ͯ͠
    

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100. View Slide

101. ׬੒ʂ
     

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102. ΋͏ͪΐ͍΍ͬͯΈ·͠ΐ͏ʂ
     

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103. ඈߦػΛ֦େͨ͠Γɺ
     ճసͤ͞Α͏ʂ
     

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104. ֦େɾॖখ
     

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105. ճస (SCNVector4)
     ࣠
     ֯౓
     

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106. ճస(Euler angle)
     

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107. ճస (Euler angle)
     x
     

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108. ճస (Euler angle)
     Y
     

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109. ճస (Euler angle)
     Z
     

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110. x Y Z
     

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111. Ҏ্
     

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112. ͜͜·Ͱ͕ࢉ਺
     

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113. ·ͩ਺ֶ͕͋Γ·͢ɻ
     

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114. Ͱ΋
     

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115. ࠲ඪͷ֓೦Λཧղͯ͠
     SceneKit΍ARKitΛ
     ࢖͍͜ͳͤΕ͹ྑ͍ɻ
     

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116. ਺ֶʹ͍ͭͯ͸QiitaͰɻ
     

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117. ARKitͷͨΊͷ
     3D
     ਺ֶ
     

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118. ࠂ஌
     

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119. Graffity Inc.
     ΤϯδχΞืूதʂ
     

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120. ࠷ޙʹ
     

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121. ݸਓͰARKitͷಈըڭࡐ࡞੒த
     

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122. One More Thing
     

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123. ࠓ೥΋΍Γ·͢
     .kt
     

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124. ے೑.kt
     w :BIPP-PEHF
     w ೥݄೔
     

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125. ͓ΘΓ
     

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