commit 7a5a7e8c62c309d33b2f4f1548581383d594d1ec
Author: Nicolas Massé <nicolas.masse@itix.fr>
Date:   Sun May 6 06:45:01 2018 -0700

    initial version

diff --git a/pattern.scad b/pattern.scad
new file mode 100644
index 0000000..0848ffe
--- /dev/null
+++ b/pattern.scad
@@ -0,0 +1,19 @@
+module spray_pattern(bounding_box, move_patterns) {
+  size = bounding_box[1] - bounding_box[0];
+  xn = floor(size.x / move_patterns[0].x);
+  yn = floor(size.y / move_patterns[1].y);
+  origin = bounding_box[0];
+
+  for (y = [0:1:yn]) {
+    for (x = [0:1:xn]) {
+      move = [x, y] * move_patterns;
+      complement = [
+        move.x >= 0 && move.x <= size.x ? 0 : -(xn + 1) * floor(move.x / ((xn + 1) * move_patterns[0].x)),
+        move.y >= 0 && move.y <= size.y ? 0 : -(xn + 1) * floor(move.y / ((xn + 1) * move_patterns[0].y))
+      ];
+      adjusted_move = origin + ([x, y] + complement) * move_patterns;
+      translate(adjusted_move)
+        children();
+    }
+  }
+}