From 0205686b9f3d9a29aedabe91c45601a8bcdab628 Mon Sep 17 00:00:00 2001
From: Justin Lin <caterpillar@openhome.cc>
Date: Fri, 13 Sep 2019 15:00:16 +0800
Subject: [PATCH] add cargo

---
 examples/taiwan/cargo_container_landmark.scad | 162 ++++++++++++++++++
 1 file changed, 162 insertions(+)
 create mode 100644 examples/taiwan/cargo_container_landmark.scad

diff --git a/examples/taiwan/cargo_container_landmark.scad b/examples/taiwan/cargo_container_landmark.scad
new file mode 100644
index 00000000..f031b1f1
--- /dev/null
+++ b/examples/taiwan/cargo_container_landmark.scad
@@ -0,0 +1,162 @@
+include <along_with.scad>;
+include <box_extrude.scad>;
+
+platform = "YES"; // [YES, NO]
+cube_only = "NO";   // [YES, NO]
+
+cargo_container_landmark();
+
+module cargo_container_landmark() {
+    cargo_width = 15;
+    cargo_height = 16;
+    cargo40ft_len = 75;
+    cargo20ft_len = cargo40ft_len / 2;
+
+    module cargo20ft() {
+        if(cube_only == "NO") {
+            cargo_container(cargo20ft_len, cargo_width, cargo_height);
+        }
+        else {
+            cube([cargo20ft_len, cargo_width, cargo_height]);
+        }
+    }
+
+    module cargo40ft() {
+        if(cube_only == "NO") {
+            cargo_container(cargo40ft_len, cargo_width, cargo_height);
+        }
+        else {
+            cube([cargo40ft_len, cargo_width, cargo_height]);
+        }
+    }
+    
+    module cargoL1() {        
+        translate([cargo_height, 0, -cargo20ft_len]) 
+            rotate([0, -90, 0]) 
+                cargo20ft();
+        cargo40ft();
+    }
+
+    color("red") 
+    translate([-40, -10, 38.75]) 
+    rotate([18.315, 17.75, 0]) {
+        translate([cargo40ft_len + cargo_width, cargo_width - cargo20ft_len, 0]) 
+            rotate(90) 
+                cargo20ft();
+        translate([cargo20ft_len + cargo_width, -cargo20ft_len, 0]) 
+            cargo20ft();
+
+        translate([cargo_width + cargo20ft_len, -cargo40ft_len + cargo20ft_len, cargo40ft_len - cargo20ft_len])  
+        rotate(90) 
+            cargoL1();
+    
+        translate([cargo_width, cargo20ft_len, -cargo20ft_len]) {
+            translate([cargo20ft_len, 0, cargo_height]) 
+                rotate([0, -90, 0]) 
+                    cargo40ft();
+            cargo20ft();
+        }    
+    
+        cargoL1();
+        translate([cargo_width, cargo_width, -cargo20ft_len]) 
+            rotate([0, 0, 90]) 
+                cargo20ft();
+    }
+    
+    if(platform == "YES") {
+        color("black") 
+            box_extrude(height = 2, shell_thickness = 1)  
+                circle(75, $fn = 96);
+    }    
+}
+
+module cargo_container(leng, width, height) {
+    d_offset = height / 400;
+    half_leng = leng / 2;
+    half_h = height / 2;
+    half_w = width / 2;
+    edge = height / 40;
+
+    y = width * 0.425;
+    z = -height / 400;
+    h = height / 30;
+    size = [height * 0.045, y * 0.8];
+    
+    module railing(nums, leng, thickness) {
+        step_x = leng / nums;
+        half_step_x = step_x * 0.5;
+        points = [for(i = [0:nums - 1]) [-half_leng + i * step_x + half_step_x, 0]];
+        along_with(points) 
+            rotate([-90, 90, 0]) 
+                linear_extrude(thickness, scale = [0.7, 0.9], center = true) 
+                     square([half_step_x, height - edge], center = true);
+    }         
+    
+    module door() {
+        difference() {
+            linear_extrude(height / 40, scale = 0.95) 
+                square([height * 0.9, y], center = true);
+            
+            for(i = [-1:1]) {
+                translate([-height / 4.25 * i, 0, z]) 
+                    linear_extrude(h, scale = 0.95) 
+                        square(size, center = true);
+            }
+        }
+    }    
+
+    rail_w = width / 8;
+    rails = leng / rail_w;
+    thickness = height / 40;
+    half_thickness = thickness / 2;
+
+    module side() {
+        translate([half_leng, half_w - half_thickness + d_offset, half_h]) 
+            rotate([90, 0, 0]) 
+                railing(rails, leng, thickness);  
+                        
+    }   
+    
+    translate([0, half_w, 0]) {
+        difference() {
+            translate([0, -half_w, 0]) 
+                cube([leng, width, height]);
+                   
+            union() {
+                // front
+                translate([-d_offset, 0, half_h]) 
+                  rotate([0, 90, 0]) 
+                      linear_extrude(thickness, scale = 0.95) 
+                          square([height * 0.95, width * 0.95], center = true);
+                          
+                // back
+                translate([leng - half_thickness + d_offset, 0, half_h]) 
+                rotate([90, 0, -90]) 
+                    railing(8, width, thickness);
+
+                // top
+                translate([half_leng, 0, height - half_thickness + d_offset]) 
+                    rotate([180, 0, 0]) 
+                        scale([1, (width - edge) / height, 1]) 
+                            railing(rails, leng, thickness);
+                            
+                side();
+                mirror([0, 1, 0]) 
+                    side();             
+            }    
+
+            // bottom
+            translate([half_leng, half_w, -height / 400]) 
+                linear_extrude(height / 80, scale = 0.95) 
+                    square([leng * 0.975, width  * 0.9], center = true);
+        }
+        
+        translate([0, 0, half_h]) 
+            rotate([0, 90, 0]) {
+                translate([0, width / 4.45, 0])
+                    door();
+                translate([0, -width / 4.45, 0]) 
+                    door();
+            }
+    }
+}
\ No newline at end of file