My daughter’s favorite princess is Rapunzel. For the special girl in your life who wants to be Princess Rapunzel, you can make her dreams come true! Here is Brittney. Now she has a tutorial on changing the Fairy Tale Dress into something different. He expects his solutions to appear in another animated feature next year.Earlier this month Brittney stopped by with her fox Playtime Dress tutorial. Now Grinspun has moved on to a new challenge-developing a program that accurately predicts the movement of hair, which collides in even more complex ways than clothing. They accepted the need for a collision-stopping fail-safe, but theirs allows the layers of fabric to slide against one another, and it accounts for friction, which affects the speed with which the fabric moves. After months, Grinspun and Tamstorf’s team came up with a solution. Previous fail-safes continued to move the fabric forward in space but did not allow the layers of material to move relative to one another, creating a rigid, shell-like appearance. When an animation program becomes overwhelmed with data, it resorts to a “fail-safe,” a backup program that prevents the layers of fabric from creating new collisions. With multilayered clothing, a computer must account for potentially thousands of collisions at once.
Rapunzel dress code#
Then he translated that equation into simple computer code that could be used to predict the movement of any “flexy, bendy material,” including rubber, fabric, even sheets of metal.īut depicting the movement of Rapunzel’s fancy gown posed a larger challenge. These included friction, the hat’s “bendiness” (elasticity) and the momentum with which it hit the ground. He studied the film for hours in slow motion and found the simplest equation that expressed the interaction of variables affecting the hat’s bounce.
Eitan Grinspun of Columbia University’s school of engineering had become fascinated with this area of research in 2002, when he filmed a cowboy hat hitting and bouncing off the floor. They got in touch with a computer scientist who has made a specialty of studying how materials respond to collisions. Rather than scaling back his sartorial ambitions or deploying armies of animators to illustrate complicated scenes by hand-solutions traditionally employed by ambitious animators to get around the challenge-Tamstorf and his team decided it was time to find a new way to solve the problem. “But when a character wearing free-flowing, multiple layers of clothing moves, it can create a lot of contact between the different layers, especially in the way they slide on top of one another. “From very early on, we knew we wanted to get more elaborate clothing than had been done so far in ,” says Rasmus Tamstorf, a senior research scientist at Walt Disney Animation Studios Research. The filmmakers had run up against a challenge that has long plagued sartorially inclined animators.
Rapunzel dress movie#
When the animators at Walt Disney Studios first dressed up Rapunzel, the long-haired star of the forthcoming movie Tangled, and had her spin around in front of a mirror, she froze mid-turn, and the folds in her multilayered purple dress turned stiff as shells.