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Isometric & Orthographic Projections - Coggle Diagram
Isometric & Orthographic Projections
Axonometric Projection
Presenting a 3D design using 3-dimensional drawings
Isometric drawing
Constructed on 3 axes that are 120 degrees from each other
Vertical lines will stay vertical
Orthographic Projections
A collection of 2D drawings to define a 3D model
6 possible views (Viewcube)
Third angle projection
Plane of projection is in between object and observer
First angle projection
Object is in between observer and plane of projection
Types of lines
Visible lines
Solid lines, made to stand out
Represents visible features of the object in a certain view
Essential to convey shape, geometry and details
Hidden lines
Represents features of the object that are not visible in a certain view
Help show internal/hidden features
Essential for understanding the complete structure
Drawn as dashed lines
Center lines
Used to indicate centers of holes, cylinders and other symmetrical features.
Drawn as alternating long and short dashes
Important for aligning features