Hilbert curve: Difference between revisions

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+=={{header|Wren}}==
+{{trans|Go}}
+{{libheader|DOME}}
+<lang ecmascript>import "graphics" for Canvas, Color, Point
+import "dome" for Window
+class Game {
+    static init() {
+        Window.title = "Hilbert curve"
+        Canvas.resize(650, 650)
+        Window.resize(650, 650)
+        __points = []
+        __width = 64
+        hilbert(0, 0, __width, 0, 0)
+        var col = Color.hex("#90EE90") // light green
+        var prev = __points[0]
+        for (p in __points.skip(1)) {
+            var curr = p
+            Canvas.line(prev.x, prev.y, curr.x, curr.y, col)
+            prev = curr
+        }
+    }
+    static hilbert(x, y, lg, i1, i2) {
+        if (lg == 1) {
+            var px = (__width - x) * 10
+            var py = (__width - y) * 10
+            __points.add(Point.new(px, py))
+            return
+        }
+        lg = lg >> 1
+        hilbert(x+i1*lg, y+i1*lg, lg, i1, 1-i2)
+        hilbert(x+i2*lg, y+(1-i2)*lg, lg, i1, i2)
+        hilbert(x+(1-i1)*lg, y+(1-i1)*lg, lg, i1, i2)
+        hilbert(x+(1-i2)*lg, y+i2*lg, lg, 1-i1, i2)
+    }
+    static update() {}
+    static draw(dt) {}
+}</lang>
 =={{header|Yabasic}}==