What is Monge projection?

Introduction to the Monge’s Method of Projections. Descriptive geometry is a branch of geometry which uses a specific set of procedures to. represent three-dimensional objects in two dimensions (plane), solve spatial problems using plane constructive methods and. reconstruct a 3D-object from its plane images.

What is projection of a circle?

Projections of a circle. Therefore, the diameter of the circle which is parallel to the plane of projection is projected into the longest diameter of the ellipse – its major axis. The minor axis is perpendicular to the major axis, so its projection lie on a line perpendicular to the projection of the major axis.

What is descriptive geometry used for?

Descriptive geometry is the branch of geometry which allows the representation of three-dimensional objects in two dimensions by using a specific set of procedures. The resulting techniques are important for engineering, architecture, design and in art.

What are traces of a plane?

The “trace” of a plane is Us lire of intersection with one of the principal planes. For example, in Fig. 151, suppose the plane Μ is deter- mined by the three points a, b, c. Its intersection with Η is its “H trace” and this line is marked HM, the two letters suggesting that it is a line common to planes Η and M.

What are the problems of Monge’s two picture protocol?

Monge’s method (two picture protocol) The loss of one dimension, in the projection of a spatial object to a plane, creates various problems when reconstructing the 3D-model from its projection. For example, all triangles whose vertices lie on the same rays of a central or parallel projection will have the same projection.

How is Monge’s method used in 3D modelling?

Monge’s method (two picture protocol) The computer 3D-modelling is brought to the stage where the two-dimensional object on the screen can be easily changed, so that we have the feeling that it is only rotating while we are observing it. In fact only the provisioned projection parameters are changing fast.

What is the definition of projection in psychology?

Projection | Psychology Today. Projection is the process of displacing one’s feelings onto a different person, animal, or object. The term is most commonly used to describe defensive projection—attributing one’s own unacceptable urges to another. The concept emerged from Sigmund Freud ’s work on defense mechanisms and was further refined by his

What are the main components of Monge’s method?

Monge’s method consists of:- orthogonal projection onto two orthogonal planes where one is chosen as the drawing plane, – rotating the orthogonal projection of the object that does not lie in the drawing plane by 90oaround the intersection of the planes into the drawing plane,