{"id":2271,"date":"2025-02-14T16:07:52","date_gmt":"2025-02-14T15:07:52","guid":{"rendered":"https:\/\/nicolas-lebrun.fr\/?post_type=project&p=2271"},"modified":"2025-04-18T21:21:04","modified_gmt":"2025-04-18T20:21:04","slug":"vct-2","status":"publish","type":"project","link":"https:\/\/nicolas-lebrun.fr\/fr\/project\/vct-2\/","title":{"rendered":"vct.2"},"content":{"rendered":"

Cette s\u00e9rie de dessin g\u00e9n\u00e9ratif, comme l\u2019ensemble des productions issu du travail Variationes Circa Triangula <\/em>est bas\u00e9 sur des compositions de triangles. <\/p>\n\n\n\n

Le programme a recours \u00e0 deux grilles pour tracer des compositions. <\/p>\n\n\n\n

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La premi\u00e8re, r\u00e9guli\u00e8re, sert \u00e0 d\u00e9former l\u2019espace, elle va appliquer un agrandissement progressif ce qui va courber l\u2019espace de la composition. \u00c0 chaque point dans la composition correspond une valeur d\u2019agrandissement qui lui est propre, cette valeur est calcul\u00e9e en fonction de la distance du point \u00e0 un point al\u00e9atoire. Comme pour une construction g\u00e9od\u00e9sique ou les ar\u00eates des faces ob\u00e9issent \u00e0 un alignement avec le centre de la structure, ici un effet d\u2019agrandissement se d\u00e9termine par rapport \u00e0 un centre al\u00e9atoire. En plus de cette courbure, \u00e0 chaque cellule de la grille est appliqu\u00e9e une rotation. En fonction de son ordre, la cellule sera pivot\u00e9e de quarante-cinq, quatre-vingt dix, cent trente cinq ou 0 degr\u00e9s.<\/p>\n<\/div><\/div>\n\n\n\n

<\/p>\n\n\n\n

La deuxi\u00e8me grille est plus simple, elle est modulaire, comme dans un tableau de Mondrian cette grille  contient des cellules qui peuvent elles-m\u00eames contenir plusieurs cellules. Cette deuxi\u00e8me grille sert \u00e0 placer les triangles, \u00e0 cr\u00e9er des pleins et des vides puisque le programme va r\u00e9utiliser la largeur et la hauteur de chaque cellule pour y tracer des triangles.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Ces deux grilles ne participent pas de la m\u00eame mani\u00e8re \u00e0 la cr\u00e9ation de la composition, la premi\u00e8re modifie la profondeur voir l\u2019espace, la deuxi\u00e8me sert \u00e0 placer des \u00e9l\u00e9ments par-dessus, y dessiner un motif.<\/p>\n\n\n\n

Ce premier protocole va cr\u00e9er une image qui va servir de base ou de matrice \u00e0 d\u2019autres programmes.<\/p>\n\n\n\n

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<\/p>\n\n\n\n

Leurs principes remplir les formes pleines avec des lignes successives, pour cela deux strat\u00e9gies diff\u00e9rentes vont \u00eatre mises en \u0153uvre.<\/p>\n\n\n\n

Le premier protocole consiste \u00e0 utiliser des lignes droites (horizontales, verticales et diagonales) pour parcourir la composition et comme s\u2019il s\u2019agissait d\u2019un pochoir, les lignes sont trac\u00e9es sur les pleins laissant les marges et les vides intactes.<\/p>\n\n\n\n

Le deuxi\u00e8me processus utilise \u00e0 peu pr\u00e8s le m\u00eame syst\u00e8me \u00e0 la diff\u00e9rence que les lignes vont \u00eatre courbes et plus courtes. Pour tracer les lignes, le programme utilise un champ d\u2019\u00e9coulement ou champ de forces dans lequel des particules vont sillonner et tracer des chemins, cela va donner au traits un aspect plus organique, comme s\u2019il avait \u00e9t\u00e9 produit \u00e0 la main.<\/p>","protected":false},"featured_media":2273,"template":"","meta":{"footnotes":""},"categories":[],"class_list":["post-2271","project","type-project","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nvct.2 - Nicolas Lebrun<\/title>\n<meta name=\"description\" content=\"Test metadescription projet\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nicolas-lebrun.fr\/project\/vct-2\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"vct.2 - Nicolas Lebrun\" \/>\n<meta property=\"og:description\" content=\"Test metadescription projet\" \/>\n<meta property=\"og:url\" content=\"https:\/\/nicolas-lebrun.fr\/project\/vct-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Nicolas Lebrun\" \/>\n<meta property=\"article:modified_time\" content=\"2025-04-18T20:21:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/nicolas-lebrun.fr\/wp-content\/uploads\/2025\/04\/subdivision-and-tiling-32@1920.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1296\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@nclslbrn\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/nicolas-lebrun.fr\\\/project\\\/vct-2\\\/\",\"url\":\"https:\\\/\\\/nicolas-lebrun.fr\\\/project\\\/vct-2\\\/\",\"name\":\"vct.2 - 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