By Prof. Dr. Nadia Magnenat-Thalmann, Prof. Dr. Daniel Thalmann (auth.)

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CAESAR can also compute the Inbetweens of two cartoon figures. CAESAR has been extensIvely used to produce logos for the TV networks ABC, NBC and CBS. Several cartoons have been produced; the most well-known IS probably Coyote and the Skunk. FIgS. 4 show images produced wIth SCANIMATE and CAESAR. , 1971] is a two-dImensional InteractIve film animatIon system that was developed at the UnIVersIty of Pennsylvania In 1971. As shown In Fig. 5, ANIMATOR comes wIth SIX modes of operatIOn. In the picture definition mode, the user creates a pIcture by assocIatIng a name to a sequence of pIcture pnmitives and prevIOusly defined pIctures.

FIg. 8 shows a PASCAL functIOn called LAW (OP, MAXVAL, FRACT) that gIves a real value correspondmg to a fractIOn (FRACT) of the total tIme expressed m number of Images. OP IS the operatIon (1 = CONSTANT, 2 = ACCELERATION, 3 = DECELERATION, 4 = ACCELERATION then DECELERATION). The value must vary m the range 0 to MAXVAL. 9 shows how such a functIOn IS used m an animatIon program. 2!. 1: (* constant velocity *) LAW := MAXVAL*FRACT, 2: (* acceleration *) LA\v := MAXVAL* (I-COS( PI*FRACT/2» , 3: (* deceleration *) LAW := MAXVAL*SIN(PI*FRACT/2), 4: (* acceleration then deceleration *) LAW := MAXVAL*(I-COS(PI*FRACT»/2 Fig.

18. 5, IS a programmmg language extensIOn of LISP. It allows the techmcal dIrector to ammate objects, colors, shadmg parameters, lIght sources and the camera. FIg. 18 shows an Image produced by InformatIOn International Inc. DIgItal Effects IS another productIOn house that worked on T RO N. They used a laser-scannmg system to dIgItIze, store and reproduce Images. Judson Rosebush, presIdent of DIgItal Effects, IS the pnmary deSIgner of APL VISION and FORTRAN VISION, two computer ammatton packages that are currently used.