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ナウいJavaScriptアニメーション実装法
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Daisuek Nagai
July 01, 2016
Programming
6
3.3k
ナウいJavaScriptアニメーション実装法
【ヒカ☆ラボ】JavaScriptの情報交換LT会~React/Redux,Node.js,アニメーション,Processing等々~
Daisuek Nagai
July 01, 2016
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Transcript
φ͍ +BWB4DSJQUΞχϝʔγϣϯ ࣮๏ ʲώΧˑϥϘʳ +BWB4DSJQUͷใަ-5ձ4QFBLFS/P ӬҪେี Daisuke Nagai
ӬҪେี %0/(63**OD!VXXXEBJTVLFOBHBJDPN ՎͬͯགྷΕΔ8FCσβΠφʔ ࣗݾհ
8FCʹ͓͚ΔΞχϝʔγϣϯͷྺ࢙ (*'Ξχϝʕγϣϯ )5.- FYNBSRVFF +BWB4DSJQU 'MBTI K2VFSZ
$44 ʁ ʁ ʁ ʜ ŘŵŠŠ
XXXEPOHVSJDPN ࡐ
͓͠ͳ͕͖ 01 Parallax scrolling 02 Stop motion animation 03 CSS
animation
01 Parallax scrolling 02 Stop motion animation 03 CSS animation
͓͠ͳ͕͖
top ʹͦΕͧΕζϥͨ͠εΫϩʔϧͷΛೖ ཁૉΛposition:fixed;Ͱஔ εΫϩʔϧͷΛऔಘ ͍··Ͱͷ1BSBMMBYTDSPMMJOH $44 +BWB4DSJQU 1 2 3
top ʹͦΕͧΕζϥͨ͠εΫϩʔϧͷΛೖ ཁૉΛposition:fixed;Ͱஔ εΫϩʔϧͷΛऔಘ ͍··Ͱͷ1BSBMMBYTDSPMMJOH $44 +BWB4DSJQU 1 2 3
ॏ͍
ߴղ૾ʢQYʣ ͷը૾ʷຕ ࠓճ༻͍ͯ͠Δഎܠը૾
8FC(- φ͍1BSBMMBYTDSPMMJOH
8FC(-ͱ 8FC(-<> ʢΣϒδʔΤϧʣ ɺ ΣϒϒϥβͰ࣍ݩίϯϐϡʔλάϥϑΟ οΫεΛදࣔͤ͞ΔͨΊͷඪ४༷ɻ 0QFO(- ޙड़ͷͱ͓Γ ࣄ্࣮0QFO(- ͘͠
0QFO(-&4Λαϙʔ τ͢Δϓϥο τϑΥʔϜ্Ͱɺ ಛผͳϒϥβͷϓϥάΠϯͳ͠Ͱɺ ϋʔ υΣΞͰΞΫηϥ Ϩʔ τ͞Εͨࡾ࣍ݩάϥϑΟ οΫεΛදࣔՄೳʹ͢Δɻ ٕज़తʹɺ +BWB4DSJQUͱωΠςΟ ϒͷ0QFO(-&4ͷόΠϯσΟ ϯάͰ͋Δɻ 8FC(-ඇӦརஂମͷ,ISPOPT(SPVQͰཧ͞Ε͍ͯΔɻ 8FC(-)5.-ͷDBOWBTཁૉΛ͏ɻ ରԠΣϒϒϥβҎԼͷ௨Γ<>ɻ ओཁͳϒϥβ࠷৽൛Ͱશͯͷϒϥβ͕ରԠ͍ͯ͠Δɻ ͨͩ͠ɺ ϏσΦΧʔ υ͕0QFO(-Λαϙʔ τ͍ͯ͠Δඞཁ͕͋Δɻ ·ͨɺ ޙड़ ͷηΩϡϦςΟ্ͷ͔Β(-@"3#@SPCVTUOFTT 0QFO(- ͘͠ (-@&95@SPCVTUOFTT 0QFO(-&4 ͷରԠ͕ඞཁͰ ͋Δɻ ͦͷͨΊɺ ྫ͑*OUFM)%(SBQIJDTͰ ʮ8JOEPXTͰ0QFO(-·ͰͷରԠ͕ͩ.BD049-JOVYͰ0QFO(-·Ͱ ରԠ͍ͯ͠Δ4BOEZ#SJEHFʯ Ҏ߱ 4BOEZ#SJEHFͰ0QFO(-ͷ.BD049͕(-@"3#@SPCVTUOFTTʹରԠͦ͠Εͱಉ༷ʹ 0QFO(-ͷ-JOVY͕(-@"3#@SPCVTUOFTTʹରԠ͠0QFO(-ͷ8JOEPXT(-@"3#@SPCVTUOFTTʹඇରԠͷͣ ֦ுػೳͱ ͠ ͯ(-@"3#@SPCVTUOFTTΛαϙʔ τ͍ͯ͠Δ ʁ <ಠࣗݚڀ >͕ͩޙड़ͷ"/(-&Λܦ༝͢Δ͜ͱͳͲͰ෦తʹ%JSFDU%Λ༻ͯ͠8FC(-Λ ࣮ݱ͢Δ߹͋Δ ͷੈ͕ݪଇͱ ͯ͠ඞཁͰ͋Γɺ ྫ֎ͱ ͯ͠ઃఆෆཁͰ෦తʹ%JSFDU%Λ༻ͯ͠8FC(-Λ࣮ݱ͢Δ߹ઃఆෆ ཁͰιϑ τΣΞϨϯμϦϯάʹΑΔ8FC(-Λ࣮ݱ͢Δ߹ͳͲΛআ͖0QFO(-Yੈ0QFO(-0QFO(-Σϒϒϥβଆ Ͱڧ੍తʹར༻͢Δઃఆ .FTB0⒎TDSFFOSFOEFSJOHFYUFOTJPO ྫMJCPTNFTB ͷ༻ͳͲؚΉ Λ͠ͳ͍ͱ8FC(-Λར༻Ͱ͖ͳ͍ ߹͕͋Δɻ ͔͠͠ɺ લड़ͷྫ֎ͱ ͯ͠ͷઃఆෆཁͳιϑ τΣΞϨϯμϦϯάͱผͷํ๏ͱ ͯ͠ɺ ϢʔβʔʹΑΔར༻ͷઃఆ͕ඞཁʹͳͬͯ͠ ·͏͕લड़ͷ.FTB0⒎TDSFFOSFOEFSJOHFYUFOTJPO ྫMJCPTNFTB ͳͲͷ༻ͳͲʹΑΓιϑ τΣΞϨϯμϦϯάʹΑΔ8FC(-ͷ࣮ߦ ࣮ݱՄೳͰ͋Δɻ ·ͨɺ ͨͱ͑*OUFM(.νοϓηο τͱ.FTBυϥΠόͱͷΈ߹ΘͤͰ0QFO(-Λαϙʔ τ͠ͳ͍͕ 0QFO(-Λαϙʔ τ͠ɺ ͔ͭɺ ֦ுػೳͱ ͯ͠(-@"3#@SPCVTUOFTTΛαϙʔ τ͢ΔͨΊ-JOVY൛'JSFGPYͰඳը͍ͦ͜ͷͷϋʔ υ ΣΞΞΫηϥϨʔγϣϯ͕༗ޮͳ8FC(-Λ࣮ߦՄೳͰ͋Δɻ ͲͷΑ ͏ ͳ04 ɾ ϒϥβͰ8FC(-Λ࣮ߦ͢Δʹ֤ͯ͠ϒϥβ͝ͱʹผʹఆΊ ΒΕͨ(16ϒϩοΫϦε τ ֤ϒϥβ͝ͱʹ04ผ ɾ ϏσΦνοϓผ ɾ ϏσΦ υϥΠόͷόʔδϣϯผ ɾ ֤ϒϥβͷόʔδϣϯผͷ ʢҎԼུʣ 8FC(-8JLJQFEJB IUUQTKBXJLJQFEJBPSHXJLJ8FC(-
8FC(-ͱ 8FC(-<> ʢΣϒδʔΤϧʣ ɺ ΣϒϒϥβͰ࣍ݩίϯϐϡʔλάϥϑΟ οΫεΛදࣔͤ͞ΔͨΊͷඪ४༷ɻ 0QFO(- ޙड़ͷͱ͓Γ ࣄ্࣮0QFO(- ͘͠
0QFO(-&4Λαϙʔ τ͢Δϓϥο τϑΥʔϜ্Ͱɺ ಛผͳϒϥβͷϓϥάΠϯͳ͠Ͱɺ ϋʔ υΣΞͰΞΫηϥ Ϩʔ τ͞Εͨࡾ࣍ݩάϥϑΟ οΫεΛදࣔՄೳʹ͢Δɻ ٕज़తʹɺ +BWB4DSJQUͱωΠςΟ ϒͷ0QFO(-&4ͷόΠϯσΟ ϯάͰ͋Δɻ 8FC(-ඇӦརஂମͷ,ISPOPT(SPVQͰཧ͞Ε͍ͯΔɻ 8FC(-)5.-ͷDBOWBTཁૉΛ͏ɻ ରԠΣϒϒϥβҎԼͷ௨Γ<>ɻ ओཁͳϒϥβ࠷৽൛Ͱશͯͷϒϥβ͕ରԠ͍ͯ͠Δɻ ͨͩ͠ɺ ϏσΦΧʔ υ͕0QFO(-Λαϙʔ τ͍ͯ͠Δඞཁ͕͋Δɻ ·ͨɺ ޙड़ ͷηΩϡϦςΟ্ͷ͔Β(-@"3#@SPCVTUOFTT 0QFO(- ͘͠ (-@&95@SPCVTUOFTT 0QFO(-&4 ͷରԠ͕ඞཁͰ ͋Δɻ ͦͷͨΊɺ ྫ͑*OUFM)%(SBQIJDTͰ ʮ8JOEPXTͰ0QFO(-·ͰͷରԠ͕ͩ.BD049-JOVYͰ0QFO(-·Ͱ ରԠ͍ͯ͠Δ4BOEZ#SJEHFʯ Ҏ߱ 4BOEZ#SJEHFͰ0QFO(-ͷ.BD049͕(-@"3#@SPCVTUOFTTʹରԠͦ͠Εͱಉ༷ʹ 0QFO(-ͷ-JOVY͕(-@"3#@SPCVTUOFTTʹରԠ͠0QFO(-ͷ8JOEPXT(-@"3#@SPCVTUOFTTʹඇରԠͷͣ ֦ுػೳͱ ͠ ͯ(-@"3#@SPCVTUOFTTΛαϙʔ τ͍ͯ͠Δ ʁ <ಠࣗݚڀ >͕ͩޙड़ͷ"/(-&Λܦ༝͢Δ͜ͱͳͲͰ෦తʹ%JSFDU%Λ༻ͯ͠8FC(-Λ ࣮ݱ͢Δ߹͋Δ ͷੈ͕ݪଇͱ ͯ͠ඞཁͰ͋Γɺ ྫ֎ͱ ͯ͠ઃఆෆཁͰ෦తʹ%JSFDU%Λ༻ͯ͠8FC(-Λ࣮ݱ͢Δ߹ઃఆෆ ཁͰιϑ τΣΞϨϯμϦϯάʹΑΔ8FC(-Λ࣮ݱ͢Δ߹ͳͲΛআ͖0QFO(-Yੈ0QFO(-0QFO(-Σϒϒϥβଆ Ͱڧ੍తʹར༻͢Δઃఆ .FTB0⒎TDSFFOSFOEFSJOHFYUFOTJPO ྫMJCPTNFTB ͷ༻ͳͲؚΉ Λ͠ͳ͍ͱ8FC(-Λར༻Ͱ͖ͳ͍ ߹͕͋Δɻ ͔͠͠ɺ લड़ͷྫ֎ͱ ͯ͠ͷઃఆෆཁͳιϑ τΣΞϨϯμϦϯάͱผͷํ๏ͱ ͯ͠ɺ ϢʔβʔʹΑΔར༻ͷઃఆ͕ඞཁʹͳͬͯ͠ ·͏͕લड़ͷ.FTB0⒎TDSFFOSFOEFSJOHFYUFOTJPO ྫMJCPTNFTB ͳͲͷ༻ͳͲʹΑΓιϑ τΣΞϨϯμϦϯάʹΑΔ8FC(-ͷ࣮ߦ ࣮ݱՄೳͰ͋Δɻ ·ͨɺ ͨͱ͑*OUFM(.νοϓηο τͱ.FTBυϥΠόͱͷΈ߹ΘͤͰ0QFO(-Λαϙʔ τ͠ͳ͍͕ 0QFO(-Λαϙʔ τ͠ɺ ͔ͭɺ ֦ுػೳͱ ͯ͠(-@"3#@SPCVTUOFTTΛαϙʔ τ͢ΔͨΊ-JOVY൛'JSFGPYͰඳը͍ͦ͜ͷͷϋʔ υ ΣΞΞΫηϥϨʔγϣϯ͕༗ޮͳ8FC(-Λ࣮ߦՄೳͰ͋Δɻ ͲͷΑ ͏ ͳ04 ɾ ϒϥβͰ8FC(-Λ࣮ߦ͢Δʹ֤ͯ͠ϒϥβ͝ͱʹผʹఆΊ ΒΕͨ(16ϒϩοΫϦε τ ֤ϒϥβ͝ͱʹ04ผ ɾ ϏσΦνοϓผ ɾ ϏσΦ υϥΠόͷόʔδϣϯผ ɾ ֤ϒϥβͷόʔδϣϯผͷ ʢҎԼུʣ 8FC(-8JLJQFEJB IUUQTKBXJLJQFEJBPSHXJLJ8FC(- ͍ܰ
8FC(-Λѻ͑ΔϥΠϒϥϦ $SFBUF+4 QJYJKT UISFFKT 1SPDFTTJOH ʜ
8FC(-Λѻ͑ΔϥΠϒϥϦ ʜ $SFBUF+4 QJYJKT UISFFKT 1SPDFTTJOH
˞ͦͷ··ͩͱ8FC(-Λѻ͑ͳ͍ͷͰผ్ ʮXFCHM7&34*0/NJOKTʯ ΛಡΈࠐΈ·͢ IUUQTHJUIVCDPN$SFBUF+4&BTFM+4USFFNBTUFSMJC ࣮ྫ $PG GFF4DSJQU
͓͠ͳ͕͖ 01 Parallax scrolling 02 Stop motion animation 03 CSS
animation
setInterval Ͱbackground-position Λը૾෯Ҿ͘ εϓϥΠ τγʔ τΛ࡞ 1 ͍··Ͱͷ4UPQNPUJPOBOJNFUJPO +BWB4DSJQU *NH
2
setInterval Ͱbackground-position Λը૾෯Ҿ͘ εϓϥΠ τγʔ τΛ࡞ 1 ͍··Ͱͷ4UPQNPUJPOBOJNFUJPO +BWB4DSJQU *NH
2 ͍ʹ͘ ͍
ࠓճ༻͍ͯ͠ΔεϓϥΠ τγʔ τ ʮʙϑϨʔϜճ܁Γฦ͍ͨ͠ʯ ʮϑϨʔϜ͚ͩඵʹ͍ͨ͠ʯ ͳͲʜʜ
$SFBUF+4 φ͍4UPQNPUJPOBOJNBUJPO
$SFBUF+4 4QSJUF4IFFU$MBTT Ξχϝʔγϣϯ͝ͱʹͲͷϑϨʔϜΛ༻͢Δ͔ઃఆͰ͖Δ +BWB4DSJQU
࣮ྫ $PG GFF4DSJQU
͓͠ͳ͕͖ 01 Parallax scrolling 02 Stop motion animation 03 CSS
animation
͍··Ͱͷ$44"OJNBUJPO +BWB4DSJQU K2VFSZBOJNBUFΛͬͯΞχϝʔγϣϯ͢Δ 1
͍··Ͱͷ$44"OJNBUJPO +BWB4DSJQU K2VFSZBOJNBUFΛͬͯΞχϝʔγϣϯ͢Δ 1 ΧΫͭ͘
7FMPDJUZKT φ͍$44BOJNBUJPO
࣮ྫ $PG GFF4DSJQU
·ͱΊ Γਚ͘ ͞ΕͨදݱͰ ࣮ํ๏Λݟ͢͜ͱͰ ͬͱύϑΥʔϚϯεΛΑ͘ ͨ͠Γ ͬͱ͔ͬ͜Α͘ Ͱ͖ͨΓ ͠·͢
·ͱΊ ʮྲྀߦ͍ͬͯΔ͔Βʯ ͱ͍͏ج४Ͱͳ͘ ͯ ʮͳʹΛ͍͔͑ͨʯ ͰΞχϝʔγϣϯΛߟ͑·͠ ΐ ͏ɹ
͝ਗ਼ௌ͋Γ͕ͱ ͏ ͍͟͝·ͨ͠ φ͍ +BWB4DSJQUΞχϝʔγϣϯ ࣮๏ ʲώΧˑϥϘʳ +BWB4DSJQUͷใަ-5ձ4QFBLFS/P