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Art and Technical Drawing
Transcript of Art and Technical Drawing
Art and Technical Drawing
Object of technical drawing in art
Differences between technical and artistic drawing
Technical drawing is present in the different artistic disciplines.
Accuracy of information
Objectivity of signals
Absence of ambiguities
Freedom in shapes representation
Absence of fixed codes
Study of human proportion
Facade of Santa Maria Novella, by Alberti, and proportion study
Sculpture of Andreu Alfaro in Denia, a ruled surface.
Op art painting by Vasarely
The objects of study of technical drawing are, mainly: polygons, proportion and perspective
In art, they had been used for drawing proportion, as ornamental patterns and, some of them, as symbolic representation.
Proportion is an harmonical arrangement or relation of parts between themselves within a whole.
Through history, artists have studied the human body and also have established canons of proportion for their creations in painting and sculpture.
Dynamic rectangles and golden proportion are very important elements in the artistic composition.
Dynamic rectangles are those whose proportional value between their sides is an irrational number: root of 2, 3, 5...
The golden ratio is a mathematical proportion based on the number phi ( =1.618033988749895...) and it's used to define harmonious proportions in art and architecture.
Perspective Drawing is an application of geometry that artists use to organize the arrangement of space in a picture.
Filipo Brunelleschi was the first artist that used in a painting the so-called linear perspective. It consists on using "vanishing points", where come together a system of parallel lines. This system is the most similar to our vision sense.
This technique (linear perspective) was perfected during the Renaissance and was used until the appearance of 20th century avant-garde painting, where the representation of reality wasn't so important in a painting.
In realist and hyperrealist movements, linear perspective is altered in order to find new representations of space (although this is not appreciated on a first view of the painting)