Canvas library

Last crawled date: 4 years, 2 months ago

Canvas library
OpenSCAS library to project canvas with random images on 3D shapes
Howto
We must first convert the image to grayscale data using img2gray designed from this thing: https://www.thingiverse.com/thing:3830079. This is the reason why i declare this thing as a remix.
The test image comes from clipart-library:

Then:
$ python img2gray.py penguin.jpg penguin.scad
The generated file contains the function levels_penguin(); which gives image data.
Sample OpenSCAD file to project the image on a plane:
use
use
use

empty = newCanvas( [2,1], [200,100] );
penguin = levels_penguin();
canvas = drawImage ( penguin, empty );
flat = canvas2mesh( canvas );

meshPolyhedron ( flat );

Or projection on a cylinder:
...
flat = canvas2mesh( canvas );

// Insert these 2 lines
projected = projectCylinder( getMeshVertices(flat), radius=50 );
bent = newMesh( projected, getMeshFaces(flat) );

meshPolyhedron ( bent );
...
Or projection on a sphere:
...
flat = canvas2mesh( canvas );

// Insert these 2 lines
projected = projectSphereCylindrical( getMeshVertices(flat), radius=100 );
bent = newMesh( projected, getMeshFaces(flat) );

meshPolyhedron ( bent );
...
Documentation
Full documentation here: agentscad canvas tutorial