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Isometric and Orthographic Projections - Coggle Diagram
Isometric and Orthographic Projections
isometric and non-isometric 3D models
the use of three-dimensional drawings
Isometric Axes
3 axes that are 120 degrees from each other
top,front,right views
vertical lines will stay vertical.
non-isometric doesnt use top,front and right views stricly
1st angle and 3rd angle orthographic projections
collection of 2D drawings used to define a 3D model.
6 possible projections
Front, Back, Top, Bottom, Left, and Right Views
if a bottom view has more details than the top view,front,right,bottom view is an alternate combo
used to represent 3D objects in 2D.
In first angle, the object is placed between the observer and the plane of projection,the views projected onto the opposite side of the plane
The orthographic projections are on the opposite side.
in third angle, the plane of projection is between the observer and the object,viewed to be projected onto the same side of the plane
orthographic projections are on the same side
continuous lines, short-dashed lines, and alternately long-short dashed lines
Visible lines are used to represent features of an object that are visible in a particular view
solid, thick lines as a stand out for outline or edges
Center lines are used to indicate the centers of holes, cylinders, and other symmetrical features
alternating long and short dashes.
Center lines help to ensure that symmetrical features are properly positioned and aligned
Hidden lines are used to represent features that are not visible in a particular view
drawn as dashed lines to convey the internal or hidden features of an object