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openmw-tes3coop/components/terrain/viewdata.cpp

180 lines
3.1 KiB
C++

#include "viewdata.hpp"
namespace Terrain
{
ViewData::ViewData()
: mNumEntries(0)
, mFrameLastUsed(0)
, mChanged(false)
, mHasEyePoint(false)
{
}
ViewData::~ViewData()
{
}
void ViewData::add(QuadTreeNode *node, bool visible)
{
unsigned int index = mNumEntries++;
if (index+1 > mEntries.size())
mEntries.resize(index+1);
Entry& entry = mEntries[index];
if (entry.set(node, visible))
mChanged = true;
}
unsigned int ViewData::getNumEntries() const
{
return mNumEntries;
}
ViewData::Entry &ViewData::getEntry(unsigned int i)
{
return mEntries[i];
}
bool ViewData::hasChanged() const
{
return mChanged;
}
bool ViewData::hasEyePoint() const
{
return mHasEyePoint;
}
void ViewData::setEyePoint(const osg::Vec3f &eye)
{
mEyePoint = eye;
mHasEyePoint = true;
}
const osg::Vec3f& ViewData::getEyePoint() const
{
return mEyePoint;
}
void ViewData::reset(unsigned int frame)
{
// clear any unused entries
for (unsigned int i=mNumEntries; i<mEntries.size(); ++i)
mEntries[i].set(NULL, false);
// reset index for next frame
mNumEntries = 0;
mChanged = false;
mFrameLastUsed = frame;
}
void ViewData::clear()
{
for (unsigned int i=0; i<mEntries.size(); ++i)
mEntries[i].set(NULL, false);
mNumEntries = 0;
mFrameLastUsed = 0;
mChanged = false;
}
bool ViewData::contains(QuadTreeNode *node)
{
for (unsigned int i=0; i<mNumEntries; ++i)
if (mEntries[i].mNode == node)
return true;
return false;
}
ViewData::Entry::Entry()
: mNode(NULL)
, mVisible(true)
, mLodFlags(0)
{
}
bool ViewData::Entry::set(QuadTreeNode *node, bool visible)
{
mVisible = visible;
if (node == mNode)
return false;
else
{
mNode = node;
// clear cached data
mRenderingNode = NULL;
return true;
}
}
ViewData *ViewDataMap::getViewData(osg::Object *viewer)
{
Map::const_iterator found = mViews.find(viewer);
if (found == mViews.end())
{
ViewData* vd = createOrReuseView();
vd->setViewer(viewer);
mViews[viewer] = vd;
return vd;
}
else
return found->second;
}
ViewData *ViewDataMap::createOrReuseView()
{
if (mUnusedViews.size())
{
ViewData* vd = mUnusedViews.front();
mUnusedViews.pop_front();
return vd;
}
else
{
mViewVector.push_back(ViewData());
return &mViewVector.back();
}
}
void ViewDataMap::clearUnusedViews(unsigned int frame)
{
for (Map::iterator it = mViews.begin(); it != mViews.end(); )
{
ViewData* vd = it->second;
if (vd->getFrameLastUsed() + 2 < frame)
{
vd->setViewer(NULL);
vd->clear();
mUnusedViews.push_back(vd);
mViews.erase(it++);
}
else
++it;
}
}
void ViewDataMap::clear()
{
mViews.clear();
mUnusedViews.clear();
mViewVector.clear();
}
void ViewDataMap::setDefaultViewer(osg::Object *viewer)
{
mDefaultViewer = viewer;
}
ViewData* ViewDataMap::getDefaultView()
{
return getViewData(mDefaultViewer);
}
}