OriSim3D

Origami simulation

Test and Coverage

deno test --coverage=cov_profile  test/*.test.ts
deno coverage cov_profile

Serve index.html

deno run --allow-net --allow-read jsr:@std/http/file-server

and open http://localhost:8000

To use assert in deno.json:

deno add @std/assert 

Work in progress, any help is welcome.

Doc for developers

1. Point.js has x,y,z coordinates in 3D, xf,yf on flat crease pattern and xCanvas,yCanvas on view3D overlay
2. Segment.js is two points references : p1,p2
3. Face.js is a list of points references : p1,p2,p3...
4. Model.js has Points, Segments, Faces with methods to manipulate them
5. Commands.js interprets text to call model methods
6. Helper.js interprets mouse click and drag to send commands

Origami text commands :

• define: bottom left xf,yf and top right xf,yf : d -200 -200 200 200
• by3d: crease between two points in 3d (splits by a plane passing by the points) : by3d p1 p2
• by2d: crease between two points in 2d crease pattern (splits by a segment passing by the points) : by2d p1 p2
• across3d: crease across a face in 3d (splits by a plane across the face) : across3d p1 p2
• across2d: crease across a face in 2d crease pattern (splits by a line across the face) : across2d p1 p2
• perpendicular2d: crease perpendicular from a point to a segment : perpendicular2d p s
• perpendicular3d: crease perpendicular from a point to a segment : perpendicular3d p s
• bisector2d : crease bisector between two segments in 2d : bisector2d s1 s2
• bisector3d : crease bisector between two segments in 3d : bisector3d s1 s2
• bisector2dPoints : crease bisector of 3 points A B C. B is in the middle : bisector2dPoints p1 p2 p3
• bisector3dPoints : crease bisector of 3 points A B C. B is in the middle : bisector3dPoints p1 p2 p3
• splitSegment2d : split a segment in 2d by numerator denominator : splitSegment2d s n d
• rotate : rotate around 'Seg' with 'Angle' all 'Points' : rotate s1 angle p1 p2 p3...
• moveOn : move points on first : moveOn p1 p2 p3...
• move : move points dx,dy,dz : move dx dy dz p1 p2 p3...
• adjust : move points in 3D to equal 2D length of segments : adjust p1 p2 p3...
• offset : offset by d a list of faces on faces

Helper interprets mouse moves to make commands

• click selects point, segment, face, or marks them
• click drag from a point to a point adds a crease, or if the crease exists adds a perpendicular crease
• click drag from a segment to a segment adds a bisector
• click drag a point rotates around selected segment
• swipe from left to right on 2D undo
• swipe from right to left on 2D turns model