Loft is a method to create complicated smooth 3D shapes in
CAD and other
3D modeling
In 3D computer graphics, 3D modeling is the process of developing a mathematical coordinate-based representation of any surface of an object (inanimate or living) in three dimensions via specialized software by manipulating edges, vertices, an ...
software. Planar cross-sections of the desired shape are defined at chosen locations. Algorithms find a smooth 3D shape that fit these cross-sections. Designers can modify the shape through choice of fitting algorithm and input parameters. The method is used in packages such as Onshape,
3D Studio Max
Autodesk 3ds Max, formerly 3D Studio and 3D Studio Max, is a professional 3D computer graphics program for making 3D animations, models, games and images. It is developed and produced by Autodesk Media and Entertainment. It has modeling capabil ...
,
Creo*,
SolidWorks,
NX,
Autodesk Revit
Autodesk Revit is a building information modelling software tool for architects, landscape architects, structural engineers, mechanical, electrical, and plumbing (MEP) engineers, designers and contractors. The original software was developed by ...
, and
FreeCAD.
Consider
lofting process in boat building, to visualise the process. The planar sections are defined by boat ribs spaced along its length. The final shape is produced by placing planks over the ribs to form a smooth skin.
In
PTCs Creo and in Autodesk Revit it is referred to as a Blend or Swept Blend.
See also
*
Parallel transport
*
Lathe (graphics)
In 3D computer graphics, a lathed object is a 3D model whose vertex geometry is produced by rotating the points of a spline or other point set around a fixed axis. The lathing may be partial; the amount of rotation is not necessarily a full 360 ...
Examples (external links)
Modeling an irregular funnel with the loft tool
Computer-aided design
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