More stuff done at Project Ultra

- Added renderspace
- Revision System (to not always update pRenderspace
- added some test scene

include/pd/ultra/elems/element.hpp

@@ -1,10 +1,12 @@
 #pragma once
 
 #include <pd/lithium/lithium.hpp>
+#include <pd/ultra/flags.hpp>
 
 namespace PD {
 namespace Ultra {
-class ElementBase {
+class Canvas;
+class PD_API ElementBase {
  public:
   ElementBase() {}
   ~ElementBase() {}
@@ -14,8 +16,22 @@ class ElementBase {
    * Reset Function (for PD::Pool::FastReset)
    */
   virtual void Reset() {}
+  void Update(Canvas& c);
 
- private:
+  void SetAlignment(UltraAlignment a) { pAlignment = a; }
+  void SetPosition(const PD::fvec2& pos) { pPos = pos; }
+  void SetPosition(float x, float y) { pPos = PD::fvec2(x, y); }
+  void SetSize(const PD::fvec2& size) { pSize = size; }
+  void SetSize(float w, float h) { pSize = PD::fvec2(w, h); }
+
+ protected:
+  bool RevisionUpdate(PD::u32 req);
+  PD::u32 pCanvasRev = 0;
+  PD::Li::Rect pRenderspace;
+  UltraAlignment pAlignment = 0;
+  PD::fvec2 pPos;
+  PD::fvec2 pSize;
+  ElementBase* pParent = nullptr;
 };
 }  // namespace Ultra
 }  // namespace PD