Initial commit

Torque/SDK/engine/sceneGraph/detailManager.h

@@ -0,0 +1,108 @@
+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// Copyright (C) GarageGames.com, Inc.
+//-----------------------------------------------------------------------------
+
+#ifndef _DETAILMANAGER_H_
+#define _DETAILMANAGER_H_
+
+#ifndef _PLATFORMASSERT_H_
+#include "platform/platformAssert.h"
+#endif
+#ifndef _MMATH_H_
+#include "math/mMath.h"
+#endif
+#ifndef _TVECTOR_H_
+#include "core/tVector.h"
+#endif
+
+#define MAX_BUMP 4
+
+class TSShapeInstance;
+class TSPartInstance;
+
+class DetailManager
+{
+public:
+
+   struct DetailData
+   {
+      S32 tag;
+      TSShapeInstance * shapeInstance; // either this
+      TSPartInstance * partInstance;   // or this
+      S16 bump[MAX_BUMP];
+      S16 dls[MAX_BUMP];
+      S32 dl;
+      F32 intraDL;
+      S32 prevDL;
+      F32 pixelSize;
+      F32 priority;
+   };
+
+   struct DetailProfile
+   {
+      S32 skipFirst; // for how many rounds do we want to skip "bumping" first detail
+      S32 skipMiddle; // for how many rounds do we want to skip "bumping" every middle detail
+      S32 skipLast;  // for how many rounds do we want to skip "bumping" last detail
+   };
+
+   static DetailProfile smDefaultProfile;
+
+private:
+
+   static DetailManager * smDetailManager;
+   static DetailManager * get() { AssertFatal(smDetailManager,"DetailManager::get"); return smDetailManager; }
+
+   S32 mTag;
+   S32 mPolyLimit; // our poly budget...computed at the start of each frame based on detail scale
+   bool mInPrepRender;
+
+   S32 mPolyCount; // current poly count
+   S32 mBumpPolyCount[MAX_BUMP]; // number of polys we save at each "bump" level
+
+   Vector<DetailData*> mDetailData;
+   Vector<DetailData*> mFreeDetailData;
+
+   void begin();
+   void end();
+
+   void selectPotential(TSShapeInstance * si, F32 dist, F32 invScale, const DetailProfile * dp = &smDefaultProfile);
+   bool selectCurrent(TSShapeInstance * si);
+
+   void selectPotential(TSPartInstance * pi, F32 dist, F32 invScale, const DetailProfile * dp = &smDefaultProfile);
+   bool selectCurrent(TSPartInstance * pi);
+
+   void bumpOne(DetailData*, S32 bump);
+   void bumpAll(S32 bump);
+
+   void computePriority(DetailData *, S32 bump);
+   DetailData * getNewDetailData();
+
+public:
+
+   DetailManager();
+   ~DetailManager();
+
+   static F32 smDetailScale; // user can adjust this
+
+   static S32 smMaxPolyLimit; // app sets this once -- or uses default value
+   static S32 smMinPolyLimit; // app sets this once -- or uses default value
+   static S32 smLimitRange;   // app sets this once -- or uses default value
+
+   static S32 smPolysTriedToRender;  // not used here, but can be read for misc. uses
+   static S32 smPolysDidRender;      // not used here, but can be read for misc. uses
+
+   static void init() { AssertFatal(!smDetailManager,"DetailManger::init"); smDetailManager = new DetailManager; }
+   static void shutdown() { delete smDetailManager; smDetailManager = NULL; }
+
+   static void beginPrepRender() { get()->begin(); }
+   static void endPrepRender() { get()->end(); }
+
+   static void selectPotentialDetails(TSShapeInstance * si, F32 dist, F32 invScale) { get()->selectPotential(si,dist,invScale); }
+   static bool selectCurrentDetail(TSShapeInstance * si) { return get()->selectCurrent(si); }
+
+   static void selectPotentialDetails(TSPartInstance * pi, F32 dist, F32 invScale) { get()->selectPotential(pi,dist,invScale); }
+   static bool selectCurrentDetail(TSPartInstance * pi) { return get()->selectCurrent(pi); }
+};
+
+#endif