Everything around us has its shape, size, colour on the whole looks as a 3D dimensional object.
We try to imitate the surrounding with the pictures or drawings.
In the case of drawings, only two-dimensional views are drawn over a piece of paper.
Hence, it is necessary to draw the objects in the orthographic views is important.
The three methods are perspective projection, oblique projection and axonometric projection.
Perspective Projection
It is commonly adopted by the professional designer’s, artists, and an architect to make their product looks better to the human eye.
The coverage of this projection appears at a point known as the vanishing point.
Oblique projection
It is commonly adopted by the furniture manufacturers and mathematicians.
The two-dimensional image is drawn as the 3dimensional image at some angle for providing depth to the image.
Axonometric projection
It is commonly adopted in the drawing of machine parts, assemblies etc.
This projection is different from others, as the drawings of an object from a skew direction.
It is drawn by considering rotation angle relative to the plane of projection.
This projection is classified into the isometric projection, diametric projection and trimetric projection.
In isometric projection, the angles between the three principal axes are equal to 120 degrees and are equally foreshortened.
The advantage of this method is an accurate method of drawings as it requires a single scale to measure three principal axes.
In general, the isometric projection is widely adopted in engineering drawings.
We try to imitate the surrounding with the pictures or drawings.
In the case of drawings, only two-dimensional views are drawn over a piece of paper.
Hence, it is necessary to draw the objects in the orthographic views is important.
The three methods are perspective projection, oblique projection and axonometric projection.
Perspective Projection
It is commonly adopted by the professional designer’s, artists, and an architect to make their product looks better to the human eye.
The coverage of this projection appears at a point known as the vanishing point.
Oblique projection
It is commonly adopted by the furniture manufacturers and mathematicians.
The two-dimensional image is drawn as the 3dimensional image at some angle for providing depth to the image.
Axonometric projection
It is commonly adopted in the drawing of machine parts, assemblies etc.
This projection is different from others, as the drawings of an object from a skew direction.
It is drawn by considering rotation angle relative to the plane of projection.
This projection is classified into the isometric projection, diametric projection and trimetric projection.
In isometric projection, the angles between the three principal axes are equal to 120 degrees and are equally foreshortened.
The advantage of this method is an accurate method of drawings as it requires a single scale to measure three principal axes.
In general, the isometric projection is widely adopted in engineering drawings.
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