Coding methods Descriptive Geometry, made in the nineteenth century, helped define unambiguously the methods of passing a three-dimensional object to its plan representation and vice versa. As we all know, the methods of Descriptive Geometry allow graphical representation of any object type. However, in practice, the designer is in some cases to difficulties, when the idea contains nonreducible free forms of mathematical elements (points, networks, shots) or mathematical surfaces (cones, cylinders, surfaces rotation, etc..). At this point, the designer, even if it is not conscious, eventually developing a new idea of how to avoid falling into these difficulties and to be able to represent at ease. But then arises a question: the representation of an object and that of a photogrammetric or direct reading they pose the same problems? The answer, no, this request could result from a simple observation: the project is the representation of a "" mental object "," while the statement is that of a "" physical object "."
La codification des méthodes de la Géométrie Descriptive, réalisée au XIX siècle, a permis de définir de façon univoque les procédés de passage d'un objet tridimensionnel à sa représentation en plan et vice versa. Comme nous le savons tous, les méthodes de la Géométrie Descriptive permettent la représentation graphique de n'importe quel type d'objet. Cependant, dans la pratique, le projeteur se trouve dans certains cas devant des difficultés, lorsque l'idée contient des formes libres non réductibles à des éléments mathématiques (points, réseaux, plans) ou à des surfaces mathématiques (cônes, cylindres, surfaces de rotation, etc.). A ce moment là, le projeteur, même s'il n'en est pas conscient, finit par élaborer une idée nouvelle de façon à ne pas retomber dans ces difficultés et à pouvoir la représenter à son aise. Mais il convient alors de se poser une question: la représentation d'un objet et celle d'un relevé photogrammétrique ou direct posent-elles les même problèmes? La réponse, négative, à cette demande pourrait découler d'une simple observation: le projet est la représentation d'un "objet mental", alors que le relevé est celle d'un "objet physique".
Photogrammetrie et théorie de la representation en architecture / M., Docci; Migliari, Riccardo. - STAMPA. - (1988), pp. 33-44.
Photogrammetrie et théorie de la representation en architecture
MIGLIARI, Riccardo
1988
Abstract
Coding methods Descriptive Geometry, made in the nineteenth century, helped define unambiguously the methods of passing a three-dimensional object to its plan representation and vice versa. As we all know, the methods of Descriptive Geometry allow graphical representation of any object type. However, in practice, the designer is in some cases to difficulties, when the idea contains nonreducible free forms of mathematical elements (points, networks, shots) or mathematical surfaces (cones, cylinders, surfaces rotation, etc..). At this point, the designer, even if it is not conscious, eventually developing a new idea of how to avoid falling into these difficulties and to be able to represent at ease. But then arises a question: the representation of an object and that of a photogrammetric or direct reading they pose the same problems? The answer, no, this request could result from a simple observation: the project is the representation of a "" mental object "," while the statement is that of a "" physical object "."I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.