From acdf1072222c5217c957befee141770d25e0a417 Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Sat, 5 Feb 2022 11:23:20 +0800
Subject: [PATCH] del

---
 examples/taiwan/spiral_cube.scad | 92 --------------------------------
 1 file changed, 92 deletions(-)
 delete mode 100644 examples/taiwan/spiral_cube.scad

diff --git a/examples/taiwan/spiral_cube.scad b/examples/taiwan/spiral_cube.scad
deleted file mode 100644
index 732f1ad4..00000000
--- a/examples/taiwan/spiral_cube.scad
+++ /dev/null
@@ -1,92 +0,0 @@
-use <crystal_ball.scad>;
-
-leng = 30;
-leng_diff = 3;
-min_leng = 2;
-model = "Cube"; // [Cube, Base, Both]
-
-module spiral_cube(leng, leng_diff, min_leng) {
-    thickness = leng_diff / 3;
-    starting_leng = leng + leng_diff * 2 + thickness * 2.5;
-    half_leng = leng / 2;
-    pow_leng_diff = pow(leng_diff, 2);
-    module spiral_stack(current_leng, pre_height = 0, i = 0) {
-        factor = current_leng / starting_leng;
-        
-        if(current_leng > min_leng && current_leng > leng_diff && half_leng > pre_height) {
-            translate([0, 0, pre_height]) 
-            scale([factor, factor, 1]) 
-                children();
-           
-            rotate(atan2(leng_diff, current_leng - leng_diff))
-            spiral_stack(
-                sqrt(pow_leng_diff + pow(current_leng - leng_diff, 2)),           
-                thickness + pre_height,
-                i + 1
-            ) children();
-        }
-        else if(half_leng > pre_height) {
-            translate([0, 0, pre_height]) 
-            scale([factor, factor, (half_leng - pre_height) / thickness]) 
-                children();
-        }
-    }
-    
-    module spiral_squares() {     
-        translate([0, 0, -half_leng]) 
-        spiral_stack(leng)
-        translate([0, 0, thickness / 2]) 
-            cube([leng , leng, thickness * 1.01], center = true);
-       
-    }
-
-    module pair_spiral_squares() {
-        spiral_squares();
-       // mirror([0, 0, 1])
-        rotate([180, 0, 0])
-            spiral_squares();
-    }
-
-    difference() {
-        cube(leng * 0.99, center = true);
-        
-        union() {
-            pair_spiral_squares();
-            rotate([90, 0, 0]) pair_spiral_squares();
-            rotate([0, 90, 0]) pair_spiral_squares();
-        }
-    }
-}
-
-module base(leng) {
-    $fn = 96;
-    r = leng / 3;
-    difference() {
-        crystal_ball(
-            radius = r, 
-            theta = 360,
-            phi = 90
-        ); 
-        translate([0, 0, leng * sqrt(3) / 2 + leng / 15]) 
-        rotate([45, atan2(1, sqrt(2)), 0]) 
-            cube(leng * 0.99, center = true);
-    }
-}
-
-if(model == "Cube") {
-    spiral_cube(leng, leng_diff, min_leng);
-} else if(model == "Base") {
-    base(leng);
-} else {
-    translate([0, 0, leng * sqrt(3) / 2 + leng / 15]) 
-    rotate([45, atan2(1, sqrt(2)), 0])  
-    // render first to avoid bugs
-    render() {
-        spiral_cube(leng, leng_diff, min_leng);
-        rotate([-45, 0, 0])
-        rotate([0, -atan2(1, sqrt(2)), 0])
-        translate([0, 0, -(leng * sqrt(3) / 2 + leng / 15)])
-            base(leng);
-    }
-}
-