3D view now shows lights and added double spinbox

DoubleSpinBox.qml

@@ -0,0 +1,39 @@
+import QtQuick
+import QtQuick.Controls
+
+SpinBox {
+    id: spinbox
+
+    property int decimals: 2
+    property real factor: 100
+
+    property real realFrom: from / factor
+    property real realTo: to / factor
+    property real realValue: value / factor
+
+    from: realFrom * factor
+    to: realTo * factor
+    value: realValue * factor
+
+    stepSize: factor
+
+    signal realValueModified
+
+    onValueModified: {
+        realValue = Qt.binding(function(){ return value / factor; });
+        realValueModified();
+    }
+
+    validator: DoubleValidator {
+        bottom: Math.min(spinbox.from, spinbox.to)
+        top:  Math.max(spinbox.from, spinbox.to)
+    }
+
+    textFromValue: function(value, locale) {
+        return Number(value / 100).toLocaleString(locale, 'f', spinbox.decimals)
+    }
+
+    valueFromText: function(text, locale) {
+        return Number.fromLocaleString(locale, text) * 100
+    }
+}