more designs

mesh_knit_bag.scad

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+
+linear_extrude(1)
+pattern(1000, 1, 4){
+    // square(size=[50, 50], center=true);
+    scale_uniform(3){
+        import("/home/bart/Downloads/laura_bag_1.svg");
+    }
+}
+
+module pattern(mesh_size, line_width, spacing){
+    union(){
+        intersection(){
+            mesh(mesh_size, line_width, spacing);
+            children(0);
+        }
+        // calculate border
+        difference(){
+            children(0);
+            offset(r=-line_width){
+                children(0);
+            }
+        }
+    }
+}
+
+module mesh(size, line_width, spacing){
+    // Note that mesh always has to be even.
+    // This translates into the first lines being perfectly centered.
+
+    // Start by calculating amount of spacings
+    n_size = (size-line_width)/(line_width+spacing);
+
+    step = line_width + spacing;
+    for(i=[0:n_size/2]){
+        // vertical lines
+        translate([i*step, 0, 0])
+        square(size=[line_width, size], center=true);
+        translate([-i*step, 0, 0])
+        square(size=[line_width, size], center=true);
+
+        // horizontal lines
+        translate([0, i*step, 0])
+        square(size=[size, line_width], center=true);
+        translate([0, -i*step, 0])
+        square(size=[size, line_width], center=true);
+    }
+}
+
+module scale_uniform(my_scale){
+    scale([my_scale, my_scale]){
+        children(0);
+    }
+}