falk@sun.Eng.Sun.COM (Ed Falk) (04/14/89)
Boy, summer must be coming, it seems to be repeat season In article <14198@gryphon COM>, shaulp@pnet02 cts com (Shaul Peleg) writes: > > I have heard SOOOOO much about those famous Pixar animations ( and even > caught a bit of one on the Oscars ) and I was wondering if there is any way > for one to get a hold of these on video tape? Luxo Jr is VHS, $14 95+shipping Red's Dream is VHS, $19 95+shipping shipping is $5 for first copy, $2 for each additional add 6% tax for CA They take Visa, Mastercard & American Express Mail to Direct Cinema Limited Post Office Box 69799 Los Angeles, CA 90069 U S A Phone 213/652-8000 > I need an algorithm that rotates a raster image by an arbitrary angle > Please respond via Email to cristy@dupont com Thanks muchly in advance A simple way is through shearing; this is a 90 degree rotation: shear to the right .XXXXXXXXXXXXXX. .XXXXXXXXXXXXXX. .X............X. .X............X. ..X.........XX.. ..X.........XX.. ...XX.X...XXX... ...XX.X...XXX... ....XXXXXXXX.... ....XXXXXXXX.... .....XXXXXX..... .....XXXXXX..... ......XXXX...... ......XXXX...... .......XX....... .......XX....... .......XX....... .......XX....... ......X..X...... ......X..X...... .....X.X..X..... .....X.X..X..... ....X......X.... ....X......X.... ...X...X....X... ...X...X....X... ..X...XXXX...X.. ..X...XXXX...X.. .X...XXXXXX...X. .X...XXXXXX...X. .XXXXXXXXXXXXXX. .XXXXXXXXXXXXXX. shear down, shear to the left ................ ................ XX............XX XX............XX X.X..........X.X X.X..........X.X X..X........X..X X..X........X..X X...X......XX..X X...X......XX..X XX...X....XX...X XX...X....XX...X XXX...X..XXXX..X XXX...X..XXXX..X XXXX.X.XXXXX...X XXXX.X.XXXXX...X XXX....XXXXX...X XXX....XXXXX...X XXX...X..XXX...X XXX...X..XXX...X XX...X....XXX..X X...X......XX..X X...X......XX..X XX...X....XXX..X X..X........XX.X X..X........XX.X X.X..........X.X X.X..........X.X XX............XX XX............XX ................ ................ Other angles can be achieved by skipping scan lines. -- -ed falk, sun microsystems sun!falk, falk@sun.com card-carrying ACLU member.