From c5bfc89c4a7240d6ee2a124a09cfebfda2ec0c9f Mon Sep 17 00:00:00 2001
From: Justin Lin <caterpillar@openhome.cc>
Date: Sun, 22 Sep 2019 13:39:08 +0800
Subject: [PATCH] add golden_taiwan

---
 examples/taiwan/golden_taiwan.scad | 57 ++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 examples/taiwan/golden_taiwan.scad

diff --git a/examples/taiwan/golden_taiwan.scad b/examples/taiwan/golden_taiwan.scad
new file mode 100644
index 00000000..1d4d0076
--- /dev/null
+++ b/examples/taiwan/golden_taiwan.scad
@@ -0,0 +1,57 @@
+include <shape_taiwan.scad>;
+include <circle_path.scad>;
+include <rotate_p.scad>;
+include <golden_spiral.scad>;
+include <cross_sections.scad>;
+include <polysections.scad>;
+include <golden_spiral_extrude.scad>;
+include <bezier_curve.scad>;
+include <bezier_surface.scad>;
+include <function_grapher.scad>;
+
+// smaller values are better
+taiwan_fineness = 5;  
+
+// smaller values are better
+wave_fineness = 0.05;  
+
+module golden_taiwan(taiwan_fineness, wave_fineness) {
+    
+    module taiwan() {
+        mirror_taiwan = [for(pt = shape_taiwan(15)) [pt[0] * -1, pt[1]]];
+
+        translate([127.5, 42.5, 83]) golden_spiral_extrude(
+            mirror_taiwan, 
+            from = 1,  
+            to = 10, 
+            point_distance = taiwan_fineness,
+            scale = 10
+        );    
+    }
+
+    module wave() {
+        t_step = wave_fineness;
+        thickness = 100;
+
+        ctrl_pts = [
+            [[0, 0, 20],  [60, 0, -35],   [90, 0, 60],    [200, 0, 5]],
+            [[0, 50, 30], [100, 60, -25], [120, 50, 120], [200, 50, 5]],
+            [[0, 100, 0], [60, 120, 35],  [90, 100, 60],  [200, 100, 45]],
+            [[0, 123, 0], [60, 123, -35], [90, 123, 60],  [200, 123, 45]]
+        ];
+
+        g = bezier_surface(t_step, ctrl_pts);
+
+        difference() {
+            function_grapher(g, thickness);
+            translate([-1, -1, -120]) cube([220, 130, 110]);
+        }    
+    }
+
+        taiwan();
+
+        render() wave();
+    
+}
+
+golden_taiwan(taiwan_fineness, wave_fineness);
\ No newline at end of file