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Design principles for Swiss-style rock drawing / Bernhard Jenny in Cartographic journal (the), vol 51 n° 4 (November 2014)  

Public [article]  inCartographic journal (the) > vol 51 n° 4 (November 2014) . - pp 360-371 Titre : Design principles for Swiss-style rock drawing Type de document : Article/Communication Auteurs : Bernhard Jenny, Auteur ; Jürg Gilgen, Auteur ; Roman Geisthövel, Auteur Année de publication : 2014 Article en page(s) : pp 360-371 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Rédaction cartographique [Termes IGN] dessin assisté par ordinateur [Termes IGN] dessin automatique [Termes IGN] dessin cartographique [Termes IGN] hachure [Termes IGN] rocher [Termes IGN] spécification [Termes IGN] style cartographique [Termes IGN] Swisstopo Résumé : (Auteur) Swiss-style rock drawing uses shaded hachures to show the characteristic forms and the third dimension of rocks and cliffs. Rock faces, trenches, gullies, faults and other rock features relevant for orientation and navigation in mountainous areas are shown as seen from the ground instead of from an orthogonal perspective. The density and dimensions of hachures change with the exposure to a source of illumination to generate a shading effect that highlights the terrain’s three-dimensionality. The generation of rock drawings in Swiss style is time-intensive and requires an eye for the artistic rendering of the terrain’s third dimension as well as an understanding of different rock types and their morphology. Design principles have not yet been documented in a detailed and comprehensive manner and only rudimentary algorithms exist for the digital generation of simplified representations. This paper discusses the defining characteristics and specific design principles of Swiss-style rock drawing based on figures and unpublished documentation from the Swiss Federal Office of Topography swisstopo. We identify three main types of hachure-based rock drawing and discuss graphical elements for the most common type. We also discuss the combination of rock drawings with contour lines, their generalisation and the drawing process. Numéro de notice : A2014-645 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277413Y.0000000052 En ligne : https://doi.org/10.1179/1743277413Y.0000000052 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75091 [article]

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