Origami/Techniques/Yoshizawa-Randlett system
Many origami books begin with a description of basic origami techniques which are used to construct the models. The folds are normally described using the Yoshizawa-Randlett diagramming system. There are two main types of origami symbol, lines and arrows.[1] The arrows show how the paper is bent or moved. Lines show various types of edges:
- A thick line for the edge of the paper
- A dashed line for a valley fold
- A dashed and dotted line for mountain folds (there may be one or two dots per dash depending on the author)
- A thin line for a previous fold
- A dotted line for a previous fold that's hidden, or sometimes a fold that's not yet made.
Paper representation
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Side color
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Crease
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Invisible line
Operations
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Valley fold
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Mountain fold
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Fold and unfold valley
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Fold and unfold mountain
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Pleat fold
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Pull
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Inside crimp fold
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Outside crimp fold
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Inside reverse fold
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Outside reverse fold
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Open
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Sink
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Inflate
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Roll
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Cut
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Repeat action
View
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Rotate
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Turn over
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Zoom in
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Zoom out
There are some symbols that have been used by some authors but are not accepted into the Yoshizawa-Randlett system. Robert Lang has introduced a “view from here” symbol that looks like an eye which has proven to be very useful, especially with his signature three-dimensional models.
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View from here
Several different methods have been introduced to point out to the folder to pay attention to a certain spot; these range from a letter or number to a circle, dot, or other geometric symbol.
References
edit- ↑ Peter Engel (1989). Origami from Anglefish to Zen. Dover. p. 8. ISBN 978-0486-28138-4.