{"id":1709,"date":"2022-11-06T15:09:44","date_gmt":"2022-11-06T14:09:44","guid":{"rendered":"https:\/\/nicolas-lebrun.fr\/?post_type=project&p=1709"},"modified":"2023-07-07T15:12:55","modified_gmt":"2023-07-07T14:12:55","slug":"perdu-dans-lattraction-labstraction","status":"publish","type":"project","link":"https:\/\/nicolas-lebrun.fr\/fr\/project\/perdu-dans-lattraction-labstraction\/","title":{"rendered":"Perdu dans l’attraction \/ l’abstraction"},"content":{"rendered":"

En physique, le chaos n\u2019est pas synonyme du d\u00e9sordre . Il s\u2019agit ici du chaos d\u00e9terministe qui traduit l\u2019existence dans la nature d\u2019un groupe de ph\u00e9nom\u00e8nes physiques non lin\u00e9aire, sensibles aux conditions initiales et dont les supports g\u00e9om\u00e9triques sont les fractales. Dans un chaos d\u00e9terministe il existe un certain ordre dans un d\u00e9sordre apparent.<\/p>\n

\"Lost<\/a>Ce projet utilise l\u2019attracteur de Clifford pour d\u00e9placer des points, il s\u2019agit d\u2019une formule math\u00e9matique qui va permettre de d\u00e9placer un point \u00e0 partir de sa position actuelle et de quatre constante (quatre nombres qui ne changent jamais). Vous pouvez voir une application possible de cette attracteur sur le site de Paul Bourke<\/a>.<\/p>\n

 <\/p>\n

La plupart des visuels qui sont g\u00e9n\u00e9r\u00e9s avec des attracteurs fonctionne un point plac\u00e9 au centre de l\u2019espace qui va \u00eatre d\u00e9plac\u00e9 X fois, des milliers, des millions parfois des milliards de fois, en changeant sa couleur. \u00c0 chaque d\u00e9placement le point \u00e9tire la ligne, cr\u00e9ant des courbes, des circonvolutions. Tout est d\u00e9termin\u00e9 par les quatre constantes, celle-ci se situent entre -2 et +2, parfois ils arrivent qu\u2019avec certaines valeurs le point ne se d\u00e9place jamais.<\/p>\n

 <\/p>\n

\"Lost<\/a>L\u2019id\u00e9e du programme de Lost in the attraction \/ abstraction<\/em> est d\u2019utiliser des constantes al\u00e9atoires, le probl\u00e8me est que dans certains cas comme d\u00e9crit ci-dessus il ne se passent rien. Comment faire ? Faire une liste de constante possibles et en choisir al\u00e9atoirement, cette id\u00e9e est d\u00e9j\u00e0 \u00e0 l\u2019\u0153uvre dans la S\u00e9rie des Attracteurs<\/a><\/em> et je voulais utiliser quelque chose de plus exp\u00e9rimental, faire \u00e9voluer ces constantes, donner plus d\u00e9sordre \u00e0 cet attracteur en ajoutant \u00e0 chaque d\u00e9placement une valeur infime aux quatre constantes. Ainsi, le sketch ne dessine plus un attracteur mais un interpolation entre plusieurs (beaucoup) d\u2019attracteur, on per\u00e7oit dans les d\u00e9placements de chaque points des \u00e0 coups, des changements brutaux et des temps de pause.<\/p>\n

 <\/p>\n

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