mirror of
https://github.com/OpenMW/openmw.git
synced 2025-10-31 17:56:42 +00:00
136 lines
3.9 KiB
C++
136 lines
3.9 KiB
C++
#ifndef OPENMW_COMPONENTS_TERRAIN_VIEWDATA_H
|
|
#define OPENMW_COMPONENTS_TERRAIN_VIEWDATA_H
|
|
|
|
#include <deque>
|
|
#include <vector>
|
|
|
|
#include <osg/Node>
|
|
|
|
#include "view.hpp"
|
|
|
|
namespace Terrain
|
|
{
|
|
|
|
class QuadTreeNode;
|
|
|
|
struct ViewDataEntry
|
|
{
|
|
ViewDataEntry();
|
|
|
|
bool set(QuadTreeNode* node);
|
|
|
|
QuadTreeNode* mNode;
|
|
|
|
unsigned int mLodFlags;
|
|
osg::ref_ptr<osg::Node> mRenderingNode;
|
|
};
|
|
|
|
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(const QuadTreeNode* node) const;
|
|
|
|
void copyFrom(const ViewData& other);
|
|
|
|
unsigned int getNumEntries() const { return mNumEntries; }
|
|
ViewDataEntry& getEntry(unsigned int i) { return mEntries[i]; }
|
|
|
|
double getLastUsageTimeStamp() const { return mLastUsageTimeStamp; }
|
|
void setLastUsageTimeStamp(double timeStamp) { mLastUsageTimeStamp = timeStamp; }
|
|
|
|
/// Indicates at least one mNode of mEntries has changed.
|
|
/// @note Such changes may necessitate a revalidation of cached mRenderingNodes elsewhere depending
|
|
/// on the parameters that affect the creation of mRenderingNode.
|
|
bool hasChanged() const { return mChanged; }
|
|
void resetChanged() { mChanged = false; }
|
|
|
|
bool hasViewPoint() const { return mHasViewPoint; }
|
|
|
|
void setViewPoint(const osg::Vec3f& viewPoint);
|
|
const osg::Vec3f& getViewPoint() const { return mViewPoint; }
|
|
|
|
void setActiveGrid(const osg::Vec4i& grid)
|
|
{
|
|
if (grid != mActiveGrid)
|
|
{
|
|
mActiveGrid = grid;
|
|
mEntries.clear();
|
|
mNumEntries = 0;
|
|
mNodes.clear();
|
|
}
|
|
}
|
|
const osg::Vec4i& getActiveGrid() const { return mActiveGrid; }
|
|
|
|
unsigned int getWorldUpdateRevision() const { return mWorldUpdateRevision; }
|
|
void setWorldUpdateRevision(int updateRevision) { mWorldUpdateRevision = updateRevision; }
|
|
|
|
void buildNodeIndex();
|
|
|
|
void removeNodeFromIndex(const QuadTreeNode* node);
|
|
|
|
private:
|
|
std::vector<ViewDataEntry> mEntries;
|
|
std::vector<const QuadTreeNode*> mNodes;
|
|
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();
|
|
|
|
float getReuseDistance() const { return mReuseDistance; }
|
|
|
|
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
|