Origami Blender Addon

A Blender addon for simulating and editing origami structures using geometric constraints and folding operations.

Installation

Install from ZIP (Recommended)

1. Download the repository as a .zip

2. Open Blender

3. Go to:

   Edit → Preferences → Add-ons

4. Click Install...

5. Select the .zip file

6. Enable the addon (search for "Origami")

Use

1. Import a FOLD file or create the crease pattern manually.
2. Select the object and Go to Edit mode
3. Click Apply All Folds

For developers

Folder structure

• core/: Simulation engine
  • constraints.py
  • crease.py
  • crease_manager.py
  • edge_utils.py
  • fold_engine.py
  • utils.py
• operators/
  • add_crease.py
  • apply_folds.py
  • import_fold.py
  • reset_op.py
• properties/
  • crease_props.py
• tests/
  • tools/
    • run_blender_test.py
  • framework.py
  • run_test.py
  • test_core.py
• ui/
  • panel.py

Class structure

classDiagram

class CreaseEdge {
    +edge
    +angle
    +crease_type

    +signed_angle()
    +get_faces()
    +compute_dihedral()
}

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classDiagram

class Constraint {
    <<abstract>>
    +project(bm: BMesh)
}

class EdgeLengthConstraint {
    +edge
    +rest_length: float
    +__init__(edge, rest_length: float)
    +project(bm)
}

class CreaseConstraint {
    +crease
    +__init__(crease_edge)
    +project(bm)
}

Constraint <|-- EdgeLengthConstraint
Constraint <|-- CreaseConstraint

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