GroundCover Atlas Changes

//-----------------------------------------------------------------------------
// Torque Ground Cover
// Copyright (C) Sickhead Games, LLC
//-----------------------------------------------------------------------------

#ifndef _GROUNDCOVER_H_
#define _GROUNDCOVER_H_

#ifndef _SCENEOBJECT_H_
   #include "sceneGraph/sceneObject.h"
#endif
#ifndef _FRUSTRUMCULLER_H_
   #include "util/frustrumCuller.h"
#endif
#ifndef _GFXTEXTUREHANDLE_H_
   #include "gfx/gfxTextureHandle.h"
#endif
#ifndef _GFX_GFXPRIMITIVEBUFFER_H_
   #include "gfx/gfxPrimitiveBuffer.h"
#endif
//jc
#ifndef _ATLASINSTANCE2_H_
   #include "atlas/runtime/atlasinstance2.h"
#endif

//class TerrainBlock; //jc
class GroundCoverCell;
class ShaderData;
class TSShapeInstance;
class LightAllocator;


class GroundCover : public SceneObject
{
public:
   GroundCover();

   DECLARE_CONOBJECT(GroundCover);

   static void consoleInit();
   static void initPersistFields();

   bool onAdd();
   void onRemove();
   void inspectPostApply();

   // Network
   U32 packUpdate( NetConnection *, U32 mask, BitStream *stream );
   void unpackUpdate( NetConnection *, BitStream *stream );

   // Rendering
   bool prepRenderImage( SceneState *state, const U32 stateKey, const U32 startZone, const bool modifyBaseState );
   void renderObject( SceneState *state, RenderInst *ri );

   // Editor
   void onTerrainUpdated( U32 flags, const Point2I& min, const Point2I& max ); //jc

   /// Sets the global ground cover LOD scalar which controls
   /// the percentage of the maximum designed cover to put down.
   /// It scales both rendering cost and placement CPU performance.
   /// Returns the actual value set.
   static F32 setQualityScale( F32 scale ) { return smQualityScale = mClampF( scale, 0.0f, 1.0f ); }

   /// Returns the current quality scale... see above.
   static F32 getQualityScale() { return smQualityScale; }

protected:
   friend class GroundCoverCell;

   typedef SceneObject Parent;

   enum
   {
      /// This is the max number of ground cover types allowed.
      NumCoverTypes = 6,      
   };

   /// This RNG seed is saved and sent to clients
   /// for generating the same cover.
   S32 mRandomSeed;

   /// The name of the terrain object which we're
   /// generating ground cover for.
   StringTableEntry mTerrainName;

   /// The ghost id of the terrain object on the client side.
   U32 mTerrainGhostId;

   /// The terrain object we're generating ground cover on.
   SimObjectPtr<AtlasInstance> mTerrainBlock;

   /// This is the outer generation radius from
   /// the current camera position.
   F32 mRadius;

   // Offset along the Z axis to render the ground cover.
   F32 mZOffset;

   /// This is less than or equal to mRadius and
   /// defines when fading of cover elements begins.
   F32 mFadeRadius;