https://github.com/nmasse-itix/openscad-pattern-filling
This OpenSCAD module provides the required mechanisms to spray a pattern on a surface.
https://github.com/nmasse-itix/openscad-pattern-filling
openscad openscad-library patterns
Last synced: about 2 months ago
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This OpenSCAD module provides the required mechanisms to spray a pattern on a surface.
- Host: GitHub
- URL: https://github.com/nmasse-itix/openscad-pattern-filling
- Owner: nmasse-itix
- License: mit
- Created: 2018-05-06T13:42:06.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2018-05-26T14:35:23.000Z (about 7 years ago)
- Last Synced: 2025-02-12T11:16:26.227Z (4 months ago)
- Topics: openscad, openscad-library, patterns
- Language: OpenSCAD
- Size: 732 KB
- Stars: 20
- Watchers: 3
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Pattern filling with OpenSCAD
This OpenSCAD module provides the required mechanisms to spray a pattern on a
surface.
## Possible usages
Patterns are widely used in common objects, and so are the possible usages of
this module:
- [alveolar reinforcement](examples/reinforcement/)
- [moucharabieh](examples/moucharabieh/)
- [decorative patterns](examples/decorative/)
- surface texturing
## Examples
In the [examples](examples) folder, common examples are provided to illustrate
what can be achieved and how to use this module.
## How to use it
First, you will need to get a copy of this module locally:
```
git clone https://github.com/nmasse-itix/OpenSCAD-Pattern-Filling.git
```
In your OpenSCAD file, include this module:
```
use
```
Then, build your base shape (in this example, an octogon and a square):
```
module mypattern(r) {
// The octogon
rotate([0,0,22.5])
circle(r=r, center=true, $fn=8);
// The square
l = 2 * r * sin(22.5);
translate([r,r,0])
rotate([0,0,45])
square([l,l], center=true);
}
```
Instanciate it once, in order to check it matches your expectations:
```
r = 2;
mypattern(r);
```
Then, you need to define two things:
- a bounding box (the area to spray)
- the two moves defining how to spray our pattern
```
bounding_box = [
[0,0], // Lower left corner
[20, 20] // upper right corner
];
moves = [
[ 2*r, 0], // For the first move, we will translate on x by two times the radius
[ 0, 2*r], // For the second move, we will translate on y by two times the radius
];
```
Finally, the pattern can be sprayed:
```
spray_pattern(bounding_box, moves)
mypattern(r);
```
If you like clean edges, you can cut the sprayed pattern at bounding box size
by intersecting the pattern with the bounding box:
```
intersection() {
spray_pattern(bounding_box, moves)
mypattern(r);
square(bounding_box[1] - bounding_box[0]);
}
```
Check [the complete source code](examples/tutorial/tutorial.scad) for more information.
## Limitations
Currently, the first move needs to be exclusively on the x axis otherwise
the pattern may not be sprayed correctly, leaving blank area.