mirror of
https://github.com/OpenMW/openmw.git
synced 2025-11-04 11:56:39 +00:00
115 lines
3.3 KiB
C++
115 lines
3.3 KiB
C++
#ifndef OPENMW_COMPONENTS_TERRAIN_VIEWDATA_H
|
|
#define OPENMW_COMPONENTS_TERRAIN_VIEWDATA_H
|
|
|
|
#include <vector>
|
|
#include <deque>
|
|
|
|
#include <osg/Node>
|
|
|
|
#include "world.hpp"
|
|
|
|
namespace Terrain
|
|
{
|
|
|
|
class QuadTreeNode;
|
|
|
|
class ViewData : public View
|
|
{
|
|
public:
|
|
ViewData();
|
|
~ViewData();
|
|
|
|
void add(QuadTreeNode* node);
|
|
|
|
void reset() override;
|
|
|
|
bool suitableToUse(const osg::Vec4i& activeGrid) const;
|
|
|
|
void clear();
|
|
|
|
bool contains(QuadTreeNode* node) const;
|
|
|
|
void copyFrom(const ViewData& other);
|
|
|
|
struct Entry
|
|
{
|
|
Entry();
|
|
|
|
bool set(QuadTreeNode* node);
|
|
|
|
QuadTreeNode* mNode;
|
|
|
|
unsigned int mLodFlags;
|
|
osg::ref_ptr<osg::Node> mRenderingNode;
|
|
};
|
|
|
|
unsigned int getNumEntries() const;
|
|
|
|
Entry& getEntry(unsigned int i);
|
|
|
|
double getLastUsageTimeStamp() const { return mLastUsageTimeStamp; }
|
|
void setLastUsageTimeStamp(double timeStamp) { mLastUsageTimeStamp = timeStamp; }
|
|
|
|
/// @return Have any nodes changed since the last frame
|
|
bool hasChanged() const;
|
|
void markUnchanged() { mChanged = false; }
|
|
|
|
bool hasViewPoint() const;
|
|
|
|
void setViewPoint(const osg::Vec3f& viewPoint);
|
|
const osg::Vec3f& getViewPoint() const;
|
|
|
|
void setActiveGrid(const osg::Vec4i &grid) { if (grid != mActiveGrid) {mActiveGrid = grid;mEntries.clear();mNumEntries=0;} }
|
|
const osg::Vec4i &getActiveGrid() const { return mActiveGrid;}
|
|
|
|
unsigned int getWorldUpdateRevision() const { return mWorldUpdateRevision; }
|
|
void setWorldUpdateRevision(int updateRevision) { mWorldUpdateRevision = updateRevision; }
|
|
|
|
private:
|
|
std::vector<Entry> mEntries;
|
|
unsigned int mNumEntries;
|
|
double mLastUsageTimeStamp;
|
|
bool mChanged;
|
|
osg::Vec3f mViewPoint;
|
|
bool mHasViewPoint;
|
|
osg::Vec4i mActiveGrid;
|
|
unsigned int mWorldUpdateRevision;
|
|
};
|
|
|
|
class ViewDataMap : public osg::Referenced
|
|
{
|
|
public:
|
|
ViewDataMap()
|
|
: mReuseDistance(150) // large value should be safe because the visibility of each node is still updated individually for each camera even if the base view was reused.
|
|
// this value also serves as a threshold for when a newly loaded LOD gets unloaded again so that if you hover around an LOD transition point the LODs won't keep loading and unloading all the time.
|
|
, mExpiryDelay(1.f)
|
|
, mWorldUpdateRevision(0)
|
|
{}
|
|
|
|
ViewData* getViewData(osg::Object* viewer, const osg::Vec3f& viewPoint, const osg::Vec4i &activeGrid, bool& needsUpdate);
|
|
|
|
ViewData* createOrReuseView();
|
|
ViewData* createIndependentView() const;
|
|
|
|
void clearUnusedViews(double referenceTime);
|
|
void rebuildViews();
|
|
bool storeView(const ViewData* view, double referenceTime);
|
|
|
|
private:
|
|
std::list<ViewData> mViewVector;
|
|
|
|
typedef std::map<osg::ref_ptr<osg::Object>, ViewData*> ViewerMap;
|
|
ViewerMap mViewers;
|
|
|
|
float mReuseDistance;
|
|
float mExpiryDelay; // time in seconds for unused view to be removed
|
|
|
|
unsigned int mWorldUpdateRevision;
|
|
|
|
std::deque<ViewData*> mUsedViews;
|
|
std::deque<ViewData*> mUnusedViews;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|