include <utils.scad>
-$hinge_pin_dia = 0.795 + 0.35;
+$hinge_pin_dia = 0.795 + 0.75;
$hinge_main_dia = 4.0;
$hinge_inter_gap = 0.50;
$hinge_prong_minwidth = 3.0;
translate([0,0,1]) color("red") HingePinPlan();
}
-module HingePositive(l, behind){
- linextr_x_yz(0, l)
- HingeProngPlan(behind);
-}
-
-module HingeNegative(l){
+module HingePinUnitCell(l) {
eff_l = l + $hinge_inter_gap;
pairs = floor(eff_l / (2*($hinge_prong_minwidth + $hinge_inter_gap)));
stride = eff_l / pairs;
- prong_width = stride/2 - $hinge_inter_gap;
- linextr_x_yz(-0.1, l+0.1)
- HingePinPlan();
+ $hinge__prong_width = stride/2 - $hinge_inter_gap;
for (i=[0:pairs-1]) {
translate(stride * i * [1,0,0])
- linextr_x_yz(0 + (i==0 ? -0.1 : 0), prong_width + $hinge_inter_gap)
+ children(0);
+ }
+}
+
+module HingePositive(l, behind){
+ HingePinUnitCell(l){
+ linextr_x_yz(0, $hinge__prong_width)
+ HingeProngPlan(behind);
+ }
+}
+
+module HingeNegative(l){
+ linextr_x_yz(-0.1, l+0.1)
+ HingePinPlan();
+ HingePinUnitCell(l){
+ linextr_x_yz($hinge__prong_width,
+ $hinge__prong_width*2 + 2*$hinge_inter_gap)
HingeGapPlan();
}
}
+test_l = 30;
+test_wb = 12;
+test_h = 12;
+
+test_face_gap = 0.75;
+
module Demo(){
difference(){
- HingePositive(30, 10);
- %HingeNegative(30);
+ HingePositive(test_l, test_h/2);
+ %HingeNegative(test_l);
+ }
+}
+
+module TestBody(){
+ linextr_x_yz(0, test_l){
+ offset(delta = -test_face_gap/2)
+ polygon([[0,0],
+ [-test_wb/2, -test_h],
+ [+test_wb/2, -test_h]]);
+ }
+}
+
+module Test(){
+ difference(){
+ union(){
+ TestBody();
+ HingePositive(test_l, test_h/2);
+ }
+ HingeNegative(test_l);
}
}
//PlanDemo();
-Demo();
+//Demo();
+//TestBody();
+Test();