bool
TileNode::shouldSubDivide(TerrainCuller* culler, const SelectionInfo& selectionInfo)
{
unsigned currLOD = _key.getLOD();
EngineContext* context = culler->getEngineContext();
if (context->getOptions().rangeMode() == osg::LOD::PIXEL_SIZE_ON_SCREEN)
{
float pixelSize = -1.0;
if (context->getEngine()->getComputeRangeCallback())
{
pixelSize = (*context->getEngine()->getComputeRangeCallback())(this, *culler->_cv);
}
if (pixelSize <= 0.0)
{
pixelSize = culler->clampedPixelSize(getBound());
}
return (pixelSize > context->getOptions().tilePixelSize().get() * 4);
}
else
{
float range = (float)selectionInfo.visParameters(currLOD+1)._visibilityRange2;
if (currLOD < selectionInfo.getNumLODs() && currLOD != selectionInfo.getNumLODs()-1)
{
return _surface->anyChildBoxIntersectsSphere(
culler->getViewPointLocal(),
range,
culler->getLODScale());
}
}
return false;
}
bool
TileNode::shouldSubDivide(osgUtil::CullVisitor* cv, const SelectionInfo& selectionInfo)
{
unsigned currLOD = _key.getLOD();
if (currLOD < selectionInfo.numLods() && currLOD != selectionInfo.numLods()-1)
{
return _surface->anyChildBoxIntersectsSphere(
cv->getViewPointLocal(),
(float)selectionInfo.visParameters(currLOD+1)._visibilityRange2,
cv->getLODScale());
}
return false;
}
bool
TileNode::shouldSubDivide(osg::NodeVisitor& nv, const SelectionInfo& selectionInfo, float lodScale)
{
unsigned currLOD = _key.getLOD();
if ( currLOD < selectionInfo.numLods()
&& currLOD != selectionInfo.numLods()-1)
{
osg::Vec3 cameraPos = nv.getViewPoint();
float radius2 = (float)selectionInfo.visParameters(currLOD+1)._visibilityRange2;
return _surface->anyChildBoxIntersectsSphere(cameraPos, radius2, lodScale);
}
return false;
}
void
TileNode::updateTileUniforms(const SelectionInfo& selectionInfo)
{
//assert(_surface.valid());
// update the tile key uniform
const osg::BoundingBox& bbox = _surface->getAlignedBoundingBox();
float width = std::max( (bbox.xMax()-bbox.xMin()), (bbox.yMax()-bbox.yMin()) );
unsigned tw, th;
_key.getProfile()->getNumTiles(_key.getLOD(), tw, th);
_tileKeyUniform->set(osg::Vec4f(_key.getTileX(), th-_key.getTileY()-1.0f, _key.getLOD(), width));
// update the morph constants
float fStart = (float)selectionInfo.visParameters(_key.getLOD())._fMorphStart;
float fEnd = (float)selectionInfo.visParameters(_key.getLOD())._fMorphEnd;
float one_by_end_minus_start = fEnd - fStart;
one_by_end_minus_start = 1.0f/one_by_end_minus_start;
osg::Vec4f morphConstants(
fStart
, one_by_end_minus_start
, fEnd * one_by_end_minus_start
, one_by_end_minus_start
);
_tileMorphUniform->set( morphConstants );
// Update grid dims
float fGridDims = selectionInfo.gridDimX()-1;
_tileGridDimsUniform->set(osg::Vec4f(
fGridDims,
fGridDims*0.5f,
2.0/fGridDims,
selectionInfo.lodForMorphing(_key.getProfile()->getSRS()->isProjected())));
// update tile extents
float fXExtents = fabs(bbox.xMax()-bbox.xMin());
float fYExtents = fabs(bbox.yMax()-bbox.yMin());
_tileExtentsUniform->set(osg::Vec4f(fXExtents,fYExtents,0,0));
const osg::Image* er = getElevationRaster();
if ( er )
{
getOrCreateStateSet()->getOrCreateUniform("oe_tile_elevationSize", osg::Uniform::FLOAT)->set( (float)er->s() );
}
}
void
TileNode::updateTileUniforms(const SelectionInfo& selectionInfo)
{
//assert(_surface.valid());
// update the tile key uniform
const osg::BoundingBox& bbox = _surface->getAlignedBoundingBox();
float width = std::max( (bbox.xMax()-bbox.xMin()), (bbox.yMax()-bbox.yMin()) );
unsigned tw, th;
_key.getProfile()->getNumTiles(_key.getLOD(), tw, th);
_tileKeyUniform->set(osg::Vec4f(_key.getTileX(), th-_key.getTileY()-1.0f, _key.getLOD(), width));
// update the morph constants
float start = (float)selectionInfo.visParameters(_key.getLOD())._fMorphStart;
float end = (float)selectionInfo.visParameters(_key.getLOD())._fMorphEnd;
float one_by_end_minus_start = end - start;
one_by_end_minus_start = 1.0f/one_by_end_minus_start;
osg::Vec2f morphConstants( end * one_by_end_minus_start, one_by_end_minus_start );
_tileMorphUniform->set( morphConstants );
const osg::Image* er = getElevationRaster();
if ( er )
{
// pre-calculate texel-sampling scale and bias coefficients that allow us to sample
// elevation textures on texel-center instead of edge:
float size = (float)er->s();
osg::Vec2f elevTexelOffsets( (size-1.0f)/size, 0.5/size );
getOrCreateStateSet()->getOrCreateUniform("oe_tile_elevTexelCoeff", osg::Uniform::FLOAT_VEC2)->set(elevTexelOffsets);
}
}
bool
TileNode::shouldSubDivide(osg::NodeVisitor& nv, const SelectionInfo& selectionInfo, float zoomFactor)
{
unsigned currLOD = _key.getLOD();
if ( currLOD < selectionInfo.numLods()
&& currLOD != selectionInfo.numLods()-1)
{
osg::Vec3 cameraPos = nv.getViewPoint();
#if OSGEARTH_REX_TILE_NODE_DEBUG_TRAVERSAL
OE_INFO << LC <<cameraPos.x()<<" "<<cameraPos.y()<<" "<<cameraPos.z()<<" "<<std::endl;
OE_INFO << LC <<"LOD Scale: "<<fZoomFactor<<std::endl;
#endif
float radius = (float)selectionInfo.visParameters(currLOD+1)._fVisibility;
bool anyChildVisible = _surface->anyChildBoxIntersectsSphere(cameraPos, radius*radius, zoomFactor);
return anyChildVisible;
}
return false;
}
IntRect RenderView::selectionBounds(bool clipToVisibleContent) const
{
document()->updateRendering();
typedef HashMap<RenderObject*, SelectionInfo*> SelectionMap;
SelectionMap selectedObjects;
RenderObject* os = m_selectionStart;
RenderObject* stop = rendererAfterPosition(m_selectionEnd, m_selectionEndPos);
while (os && os != stop) {
if ((os->canBeSelectionLeaf() || os == m_selectionStart || os == m_selectionEnd) && os->selectionState() != SelectionNone) {
// Blocks are responsible for painting line gaps and margin gaps. They must be examined as well.
selectedObjects.set(os, new SelectionInfo(os, clipToVisibleContent));
RenderBlock* cb = os->containingBlock();
while (cb && !cb->isRenderView()) {
SelectionInfo* blockInfo = selectedObjects.get(cb);
if (blockInfo)
break;
selectedObjects.set(cb, new SelectionInfo(cb, clipToVisibleContent));
cb = cb->containingBlock();
}
}
os = os->nextInPreOrder();
}
// Now create a single bounding box rect that encloses the whole selection.
IntRect selRect;
SelectionMap::iterator end = selectedObjects.end();
for (SelectionMap::iterator i = selectedObjects.begin(); i != end; ++i) {
SelectionInfo* info = i->second;
selRect.unite(info->rect());
delete info;
}
return selRect;
}
void RenderView::setSelection(RenderObject* start, int startPos, RenderObject* end, int endPos)
{
// Make sure both our start and end objects are defined.
// Check www.msnbc.com and try clicking around to find the case where this happened.
if ((start && !end) || (end && !start))
return;
// Just return if the selection hasn't changed.
if (m_selectionStart == start && m_selectionStartPos == startPos &&
m_selectionEnd == end && m_selectionEndPos == endPos)
return;
// Record the old selected objects. These will be used later
// when we compare against the new selected objects.
int oldStartPos = m_selectionStartPos;
int oldEndPos = m_selectionEndPos;
// Objects each have a single selection rect to examine.
typedef HashMap<RenderObject*, SelectionInfo*> SelectedObjectMap;
SelectedObjectMap oldSelectedObjects;
SelectedObjectMap newSelectedObjects;
// Blocks contain selected objects and fill gaps between them, either on the left, right, or in between lines and blocks.
// In order to get the repaint rect right, we have to examine left, middle, and right rects individually, since otherwise
// the union of those rects might remain the same even when changes have occurred.
typedef HashMap<RenderBlock*, BlockSelectionInfo*> SelectedBlockMap;
SelectedBlockMap oldSelectedBlocks;
SelectedBlockMap newSelectedBlocks;
RenderObject* os = m_selectionStart;
RenderObject* stop = rendererAfterPosition(m_selectionEnd, m_selectionEndPos);
while (os && os != stop) {
if ((os->canBeSelectionLeaf() || os == m_selectionStart || os == m_selectionEnd) && os->selectionState() != SelectionNone) {
// Blocks are responsible for painting line gaps and margin gaps. They must be examined as well.
oldSelectedObjects.set(os, new SelectionInfo(os, true));
RenderBlock* cb = os->containingBlock();
while (cb && !cb->isRenderView()) {
BlockSelectionInfo* blockInfo = oldSelectedBlocks.get(cb);
if (blockInfo)
break;
oldSelectedBlocks.set(cb, new BlockSelectionInfo(cb));
cb = cb->containingBlock();
}
}
os = os->nextInPreOrder();
}
// Now clear the selection.
SelectedObjectMap::iterator oldObjectsEnd = oldSelectedObjects.end();
for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i)
i->first->setSelectionState(SelectionNone);
// set selection start and end
m_selectionStart = start;
m_selectionStartPos = startPos;
m_selectionEnd = end;
m_selectionEndPos = endPos;
// Update the selection status of all objects between m_selectionStart and m_selectionEnd
if (start && start == end)
start->setSelectionState(SelectionBoth);
else {
if (start)
start->setSelectionState(SelectionStart);
if (end)
end->setSelectionState(SelectionEnd);
}
RenderObject* o = start;
stop = rendererAfterPosition(end, endPos);
while (o && o != stop) {
if (o != start && o != end && o->canBeSelectionLeaf())
o->setSelectionState(SelectionInside);
o = o->nextInPreOrder();
}
// Now that the selection state has been updated for the new objects, walk them again and
// put them in the new objects list.
o = start;
while (o && o != stop) {
if ((o->canBeSelectionLeaf() || o == start || o == end) && o->selectionState() != SelectionNone) {
newSelectedObjects.set(o, new SelectionInfo(o, true));
RenderBlock* cb = o->containingBlock();
while (cb && !cb->isRenderView()) {
BlockSelectionInfo* blockInfo = newSelectedBlocks.get(cb);
if (blockInfo)
break;
newSelectedBlocks.set(cb, new BlockSelectionInfo(cb));
cb = cb->containingBlock();
}
}
o = o->nextInPreOrder();
}
if (!m_frameView) {
// We built the maps, but we aren't going to use them.
// We need to delete the values, otherwise they'll all leak!
deleteAllValues(oldSelectedObjects);
deleteAllValues(newSelectedObjects);
deleteAllValues(oldSelectedBlocks);
deleteAllValues(newSelectedBlocks);
return;
}
// Have any of the old selected objects changed compared to the new selection?
for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i) {
RenderObject* obj = i->first;
SelectionInfo* newInfo = newSelectedObjects.get(obj);
SelectionInfo* oldInfo = i->second;
if (!newInfo || oldInfo->rect() != newInfo->rect() || oldInfo->state() != newInfo->state() ||
(m_selectionStart == obj && oldStartPos != m_selectionStartPos) ||
(m_selectionEnd == obj && oldEndPos != m_selectionEndPos)) {
repaintViewRectangle(oldInfo->rect());
if (newInfo) {
repaintViewRectangle(newInfo->rect());
newSelectedObjects.remove(obj);
delete newInfo;
}
}
delete oldInfo;
}
// Any new objects that remain were not found in the old objects dict, and so they need to be updated.
SelectedObjectMap::iterator newObjectsEnd = newSelectedObjects.end();
for (SelectedObjectMap::iterator i = newSelectedObjects.begin(); i != newObjectsEnd; ++i) {
SelectionInfo* newInfo = i->second;
repaintViewRectangle(newInfo->rect());
delete newInfo;
}
// Have any of the old blocks changed?
SelectedBlockMap::iterator oldBlocksEnd = oldSelectedBlocks.end();
for (SelectedBlockMap::iterator i = oldSelectedBlocks.begin(); i != oldBlocksEnd; ++i) {
RenderBlock* block = i->first;
BlockSelectionInfo* newInfo = newSelectedBlocks.get(block);
BlockSelectionInfo* oldInfo = i->second;
if (!newInfo || oldInfo->rects() != newInfo->rects() || oldInfo->state() != newInfo->state()) {
repaintViewRectangle(oldInfo->rects());
if (newInfo) {
repaintViewRectangle(newInfo->rects());
newSelectedBlocks.remove(block);
delete newInfo;
}
}
delete oldInfo;
}
// Any new blocks that remain were not found in the old blocks dict, and so they need to be updated.
SelectedBlockMap::iterator newBlocksEnd = newSelectedBlocks.end();
for (SelectedBlockMap::iterator i = newSelectedBlocks.begin(); i != newBlocksEnd; ++i) {
BlockSelectionInfo* newInfo = i->second;
repaintViewRectangle(newInfo->rects());
delete newInfo;
}
}
