View projection systems

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Technology and Design - Graphics

James Fergusonにより

Ikertu Historia Lantzeko

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BIBLIOGRAPHY: Desconocido. (s/f). MÉTODOS DE PROYECCIÓN PARA LA REPRESENTACIÓN DE OBJETOS. En Interpretación de planos. GUISASOLA. (s/f). DIBUJO TECNICO 2o AÑO.

View projection systems

The views of an object are the orthogonal projections of the object on six planes, in the form of a cube.

According to the different directions from which it is observed.

Two variants of orthogonal projection can be used.

Third dihedral projection method, American

The object is located on the observer and the projection plane.

The image is projected at the observer's position inside the cube. it is represented at an angle of 90°.

First there is the observer, then the projection plane and finally the object.

First dihedral projection method, European

The plane of projection is located at the observer and the object.

First there is the observer, the object object and finally the projection plane.

Place a floating stone inside a trihedron and project its views onto the faces.

Types of orthogonal projection

Projection in multiple views

Orthographic projection

Projection in the seventh octant projection in the first octant

Bounded projection

Axonometric projection

Dimetric projection

Trimetric projection

Isometric projection

Are the same, their arrangement in the drawing plane is reversed.

The six possible views of an object

View A

Front or elevation view

It is the view that provides more information

View B

Top view or floor

View D

Left side view

View F

Back view

View E

Bottom view

View C

Right side view

Representations of the object

Projections

Pictorial projection

Projections that represent the object three-dimensionally, and show three three of its faces.

Projection

Perspective

Represents objects as they are viewed by an observer.

Vanishing point, generates depth in the drawing.

Oblique

Two dimensions of the object, are projected in true length true length and the third dimension third dimension with a reduction coefficient, forming a 45° reduction angle.

Axonometric.

Represents objects by means of projection projection on the three reference axes

Isometric projection. Dimetric projection. Trimetric projection.

Represents a three-dimensional object on a surface. Is the shadow of objects

Dihedral

The use of two projection planes reflects two views of a three-dimensional object. three-dimensional object.