What is an orthographic projection?
orthographic projection is a technique used in drawings or engineering to display a three -dimensional object in two dimensions. Usually an orthographic projection displays the upper, side and front views of the object. In cartography or map creation, an orthographic projection concerns a two -dimensional map with a perspective of infinity. The map using this technique seems to be similar to the view of the space, but the shapes and distances of ground materials are distorted. When viewed from the front, side or upper part, the object projects a picture on this face of the cube. Opening the cube so that the front image is located at the bottom right of the page, the left view will be placed to the left and the upper image will be located above the left -wing view. The design shows the relationship of a conventional dimension of the edge from the front or from the side to the upper view. Once an orthographic projection is created, an artist or design control can create dimensional drawings showing a part of different perspectives or angles.
Another option for designers is a sectional projection. The sectional drawing is any graphic designer that uses an imaginary plane intersecting the part to reveal hidden inner parts or dimensions. Sections' forecasts will often be displayed along with the views of the front and hips to fully represent an object.
When planning an orthographic projection, the designer can display an object from different directions. The front and upper views are common to most projections, but the designer can choose the display of the left or right side. The orthographic projection that follows the left side is known as the projection of the first angle. The point of view from the right side is the projection of the third angle. Common practice is to use views of the first or third, but theoretically, each of the six sides of the building can be included in an orthographic projection.
Cartography is a science of map production and orthographic projections are one of several ways to represent land or water area. There are lines in the world or mape length or latitude known as parallels. Orthographic projections retain the dimensions along the parallels, resulting in a distorted view with extended areas near the center and compressed views near the edges or horizon. It differs from stereographic projections that use an imaginary view from the North or South Pole of the Earth.