190607 c1

- Add Pilz.Drawing.Drawing3D.OpenGLFactory
- Fix small bugs in Pilz.UI.PaintingControl

Pilz.Simple3DFileParser/Other/LoaderOptions.vb

@@ -0,0 +1,14 @@
+Public Class LoaderOptions
+
+    Public Property LoadMaterials As Boolean = False
+    Public Property UpAxis As UpAxis = False
+
+    Public Sub New()
+    End Sub
+
+    Public Sub New(loadMaterials As Boolean, upAxis As UpAxis)
+        Me.LoadMaterials = loadMaterials
+        Me.UpAxis = upAxis
+    End Sub
+
+End Class