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Page 1
ANIMACIJA
Izradile:
•Andrea Valenčič
•Martina Brojan
•Đurđica Štanta
•….
Page 2
Uvod
Animacija je brzo prikazivanje niza crteža koji se razlikuju
po nekim detaljima.
Pojedini crtež nazivamo kadar.
animacija = “grafika u pokretu” (grafika + vremenska
dimenzija)
Page 3
Animacija u multimediji
zaseban multimedijski projekt (prezentacija) ili dodatak
projektu
omogućava dinamičko predstavljanje činjenica
interaktivne animacije - simulacije
Page 4
Animacija na računalu
digitalno kreirana
2D-animacija:
najčešće korištena
kadrovi su kreirani pomoću alata za kreiranje 2D bitmapa
ili vektorske grafike (npr. Flash)
3D-animacija:
objektima dodaje dubinu
zahtjevnija za izradu (npr. CAD)
Page 5
Principi animacije
tromost oka omogućava privid pokreta
crtani filmovi: 24 kadrova u sekundi (engl. frames per
second - fps)
na računalu se uzima manje kadrova kako bi se smanjila
veličina datoteke
ako je prikazan premali broj kadrova u sekundi (<10),
ljudsko oko primjećuje treperenje
Adobe Flash Professional koristi 24 fps
Page 6
Principi animacije na računalu
kontrola animacije se vrši na 2 načina:
1.pomoću vremenske osi (engl. timeline)
2.postavljanjem broja kadrova animacije (engl. frame rate)
Page 7
Tehnike animacije
klasični pristup: kadrovi se crtaju ručno (Pinocchio (1940.),
Snjeguljica (2937.)
digitalni pristup: kadrovi se crtaju uz pomoć računalnih
programa (npr. Flash)
celuloidna animacija – pozadina koja se ne mijenja se
nacrta samo jednom, a elementi koji se pomiču nacrtani su
na prozirnim folijama
crtanje podloge na dugačkom listu papira – pomicanjem
objekta nacrtanog na prozirnoj foliji stvara se iluzija pokreta
Page 8
Tehnike animacije
danas se ručno nacrtani kadrovi digitaliziraju i zatim
mijenjaju
kadrovi mogu biti:
bitmape – svaki kadar se sprema zasebno, a kasnije ih
spremamo u jednu datoteku
vektorska grafika – međukadrovi se mogu umetati ili
interpolirati u realnom vremenu
Page 9
Interpolacija
• ključni kadrovi (engl. key frames) – prvi i zadnji kadar
neke akcije; pojavljuju se kad dolazi do promjena
• tweening – postepeni prijelaz iz prvog u zadnji kadar
crtanjem međukadrova po određenoj putanji; matematički:
interpolacija
• lakše je izvesti interpolaciju vektorskih objekata
• kod bitmana se za tweening koriste slojevi (analogon
prozirnim folijama)
Page 10
Vrste animacije
kadar po kadar
po stazi (animacija pokreta)
preobražavanjem (animacija oblika)
Page 11
Animacija kadar po kadar
prvi i zadnji kadar se znatno razlikuju, pa ne možemo
koristiti tweening
svaki kadar se crta zasebno
Page 12
Animacija po stazi
objekt se pomiče po nekoj putanji
mijenja se samo položaj objekta
interpolacija pozicije
linearni pomak – objekt se pomiče po pravcu za jednaku
udaljenost između svakog kadra; djeluje neprirodno
staza može biti i niz Bezierovih krivulja
Page 13
Animacija preobražavanjem
postepeno pretvaranje jedne slike u drugu
morphing - pretapanje fotografije jedne osobe u drugu
prilikom pretvaranja računalni program generira međuslike
shape tween – jednostavnije promjene oblika u Flashu
Page 14
Proces kreiranja animacije
1. kreiramo kadrove
2. dodamo zvuk
3. snimimo animaciju
4. provjerimo kako se animacija izvodi u nekom programu za
reprodukciju
5. uključimo animaciju u multimedijsku ili hipermedijsku
prezentaciju
Page 15
Formati datoteka
animirani gif (.GIF)
Windows Audio Video Interleaved (.AVI)
QuickTime (.MOV)
Flash (.SWF)
Shockwave (.DCR)
Virtual Reality Modelling Language (.WRL)
Page 16
Literatura
Hoić - Božić, Nataša: Multimedijski sustavi, 8. poglavlje:
Animacija, Rijeka, 2013.
https://mudri.uniri.hr/file.php/1304/PDF_poglavlja_2013/8_
animacija1.pdf (11.6.2014.)

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Animacija 3

  • 2. Page 2 Uvod Animacija je brzo prikazivanje niza crteža koji se razlikuju po nekim detaljima. Pojedini crtež nazivamo kadar. animacija = “grafika u pokretu” (grafika + vremenska dimenzija)
  • 3. Page 3 Animacija u multimediji zaseban multimedijski projekt (prezentacija) ili dodatak projektu omogućava dinamičko predstavljanje činjenica interaktivne animacije - simulacije
  • 4. Page 4 Animacija na računalu digitalno kreirana 2D-animacija: najčešće korištena kadrovi su kreirani pomoću alata za kreiranje 2D bitmapa ili vektorske grafike (npr. Flash) 3D-animacija: objektima dodaje dubinu zahtjevnija za izradu (npr. CAD)
  • 5. Page 5 Principi animacije tromost oka omogućava privid pokreta crtani filmovi: 24 kadrova u sekundi (engl. frames per second - fps) na računalu se uzima manje kadrova kako bi se smanjila veličina datoteke ako je prikazan premali broj kadrova u sekundi (<10), ljudsko oko primjećuje treperenje Adobe Flash Professional koristi 24 fps
  • 6. Page 6 Principi animacije na računalu kontrola animacije se vrši na 2 načina: 1.pomoću vremenske osi (engl. timeline) 2.postavljanjem broja kadrova animacije (engl. frame rate)
  • 7. Page 7 Tehnike animacije klasični pristup: kadrovi se crtaju ručno (Pinocchio (1940.), Snjeguljica (2937.) digitalni pristup: kadrovi se crtaju uz pomoć računalnih programa (npr. Flash) celuloidna animacija – pozadina koja se ne mijenja se nacrta samo jednom, a elementi koji se pomiču nacrtani su na prozirnim folijama crtanje podloge na dugačkom listu papira – pomicanjem objekta nacrtanog na prozirnoj foliji stvara se iluzija pokreta
  • 8. Page 8 Tehnike animacije danas se ručno nacrtani kadrovi digitaliziraju i zatim mijenjaju kadrovi mogu biti: bitmape – svaki kadar se sprema zasebno, a kasnije ih spremamo u jednu datoteku vektorska grafika – međukadrovi se mogu umetati ili interpolirati u realnom vremenu
  • 9. Page 9 Interpolacija • ključni kadrovi (engl. key frames) – prvi i zadnji kadar neke akcije; pojavljuju se kad dolazi do promjena • tweening – postepeni prijelaz iz prvog u zadnji kadar crtanjem međukadrova po određenoj putanji; matematički: interpolacija • lakše je izvesti interpolaciju vektorskih objekata • kod bitmana se za tweening koriste slojevi (analogon prozirnim folijama)
  • 10. Page 10 Vrste animacije kadar po kadar po stazi (animacija pokreta) preobražavanjem (animacija oblika)
  • 11. Page 11 Animacija kadar po kadar prvi i zadnji kadar se znatno razlikuju, pa ne možemo koristiti tweening svaki kadar se crta zasebno
  • 12. Page 12 Animacija po stazi objekt se pomiče po nekoj putanji mijenja se samo položaj objekta interpolacija pozicije linearni pomak – objekt se pomiče po pravcu za jednaku udaljenost između svakog kadra; djeluje neprirodno staza može biti i niz Bezierovih krivulja
  • 13. Page 13 Animacija preobražavanjem postepeno pretvaranje jedne slike u drugu morphing - pretapanje fotografije jedne osobe u drugu prilikom pretvaranja računalni program generira međuslike shape tween – jednostavnije promjene oblika u Flashu
  • 14. Page 14 Proces kreiranja animacije 1. kreiramo kadrove 2. dodamo zvuk 3. snimimo animaciju 4. provjerimo kako se animacija izvodi u nekom programu za reprodukciju 5. uključimo animaciju u multimedijsku ili hipermedijsku prezentaciju
  • 15. Page 15 Formati datoteka animirani gif (.GIF) Windows Audio Video Interleaved (.AVI) QuickTime (.MOV) Flash (.SWF) Shockwave (.DCR) Virtual Reality Modelling Language (.WRL)
  • 16. Page 16 Literatura Hoić - Božić, Nataša: Multimedijski sustavi, 8. poglavlje: Animacija, Rijeka, 2013. https://mudri.uniri.hr/file.php/1304/PDF_poglavlja_2013/8_ animacija1.pdf (11.6.2014.)