688 lines
29 KiB
Plaintext
688 lines
29 KiB
Plaintext
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/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2020 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef OSGEARTH_SCREEN_SPACE_LAYOUT_DECLUTTER_H
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#define OSGEARTH_SCREEN_SPACE_LAYOUT_DECLUTTER_H 1
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#include <osgEarth/ScreenSpaceLayoutImpl>
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#include <osgEarth/CameraUtils>
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#define FADE_UNIFORM_NAME "oe_declutter_fade"
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namespace osgEarth { namespace Internal
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{
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using namespace osgEarth;
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static const char* s_faderFS =
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"uniform float " FADE_UNIFORM_NAME ";\n"
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"void oe_declutter_apply_fade(inout vec4 color) { \n"
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" color.a *= " FADE_UNIFORM_NAME ";\n"
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"}\n";
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// records information about each drawable.
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// TODO: a way to clear out this list when drawables go away
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struct DrawableInfo
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{
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DrawableInfo() : _lastAlpha(1.0f), _lastScale(1.0f), _frame(0u), _visible(true) { }
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float _lastAlpha, _lastScale;
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unsigned _frame;
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bool _visible;
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};
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using DrawableMemory = std::unordered_map<const osg::Drawable*, DrawableInfo>;
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typedef std::pair<const osg::Node*, osg::BoundingBox> RenderLeafBox;
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// Data structure stored one-per-View.
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struct PerCamInfo
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{
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PerCamInfo() : _lastTimeStamp(0), _firstFrame(true) { }
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// remembers the state of each drawable from the previous pass
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DrawableMemory _memory;
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// re-usable structures (to avoid unnecessary re-allocation)
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osgUtil::RenderBin::RenderLeafList _passed;
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osgUtil::RenderBin::RenderLeafList _failed;
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std::vector<RenderLeafBox> _used;
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// time stamp of the previous pass, for calculating animation speed
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osg::Timer_t _lastTimeStamp;
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bool _firstFrame;
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osg::Matrix _lastCamVPW;
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};
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/**
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* A custom RenderLeaf sorting algorithm for decluttering objects.
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*
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* First we sort the leaves front-to-back so that objects closer to the camera
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* get higher priority. If you have installed a custom sorting functor,
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* this is used instead.
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*
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* Next, we go though all the drawables and remove any that try to occupy
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* already-occupied real estate in the 2D viewport. Objects that fail the test
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* go on a "failed" list and are either completely removed from the display
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* or transitioned to a secondary visual state (scaled down, alpha'd down)
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* dependeing on the options setup.
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*
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* Drawables with the same parent (i.e., Geode) are treated as a group. As
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* soon as one passes the occlusion test, all its siblings will automatically
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* pass as well.
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*/
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struct /*internal*/ DeclutterImplementation : public osgUtil::RenderBin::SortCallback
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{
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DeclutterSortFunctor* _customSortFunctor;
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ScreenSpaceLayoutContext* _context;
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PerObjectFastMap<osg::Camera*, PerCamInfo> _perCam;
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/**
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* Constructs the new sorter.
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* @param f Custom declutter sorting predicate. Pass NULL to use the
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* default sorter (sort by distance-to-camera).
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*/
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DeclutterImplementation( ScreenSpaceLayoutContext* context, DeclutterSortFunctor* f = 0L )
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: _context(context), _customSortFunctor(f)
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{
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//nop
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}
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// override.
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// Sorts the bin. This runs in the CULL thread after the CULL traversal has completed.
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void sortImplementation(osgUtil::RenderBin* bin)
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{
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const ScreenSpaceLayoutOptions& options = _context->_options;
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osgUtil::RenderBin::RenderLeafList& leaves = bin->getRenderLeafList();
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bin->copyLeavesFromStateGraphListToRenderLeafList();
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// first, sort the leaves:
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if ( _customSortFunctor && ScreenSpaceLayout::globallyEnabled )
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{
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// if there's a custom sorting function installed
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std::sort( leaves.begin(), leaves.end(), SortContainer( *_customSortFunctor ) );
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}
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else if (options.sortByDistance() == true)
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{
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// default behavior:
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std::sort( leaves.begin(), leaves.end(), SortFrontToBackPreservingGeodeTraversalOrder() );
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}
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// nothing to sort? bail out
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if ( leaves.size() == 0 )
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return;
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// access the view-specific persistent data:
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osg::Camera* cam = bin->getStage()->getCamera();
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// bail out if this camera is a master camera with no GC
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// (e.g., in a multi-screen layout)
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if (cam == NULL || (cam->getGraphicsContext() == NULL && !cam->isRenderToTextureCamera()))
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{
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return;
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}
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PerCamInfo& local = _perCam.get( cam );
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osg::Timer_t now = osg::Timer::instance()->tick();
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if (local._firstFrame)
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{
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local._firstFrame = false;
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local._lastTimeStamp = now;
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}
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// calculate the elapsed time since the previous pass; we'll use this for
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// the animations
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float elapsedSeconds = osg::Timer::instance()->delta_s(local._lastTimeStamp, now);
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local._lastTimeStamp = now;
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// Reset the local re-usable containers
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local._passed.clear(); // drawables that pass occlusion test
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local._failed.clear(); // drawables that fail occlusion test
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local._used.clear(); // list of occupied bounding boxes in screen space
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// compute a window matrix so we can do window-space culling. If this is an RTT camera
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// with a reference camera attachment, we actually want to declutter in the window-space
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// of the reference camera. (e.g., for picking).
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const osg::Viewport* vp = cam->getViewport();
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osg::Matrix windowMatrix = vp->computeWindowMatrix();
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osg::Vec3f refCamScale(1.0f, 1.0f, 1.0f);
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osg::Matrix refCamScaleMat;
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osg::Matrix refWindowMatrix = windowMatrix;
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// If the camera is actually an RTT slave camera, it's our picker, and we need to
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// adjust the scale to match it.
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if (CameraUtils::isPickCamera(cam) &&
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cam->getView() &&
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cam->getView()->getCamera())
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{
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osg::Camera* parentCam = cam->getView()->getCamera();
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const osg::Viewport* refVP = parentCam->getViewport();
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refCamScale.set( vp->width() / refVP->width(), vp->height() / refVP->height(), 1.0 );
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refCamScaleMat.makeScale( refCamScale );
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refWindowMatrix = refVP->computeWindowMatrix();
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}
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// Track the parent nodes of drawables that are obscured (and culled). Drawables
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// with the same parent node (typically a Geode) are considered to be grouped and
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// will be culled as a group.
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std::set<const osg::Node*> culledParents;
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unsigned limit = *options.maxObjects();
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bool snapToPixel = options.snapToPixel() == true;
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osg::Matrix camVPW;
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camVPW.postMult(cam->getViewMatrix());
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camVPW.postMult(cam->getProjectionMatrix());
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camVPW.postMult(refWindowMatrix);
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// has the camera moved?
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bool camChanged = camVPW != local._lastCamVPW;
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local._lastCamVPW = camVPW;
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std::unordered_set<std::string> uniqueText;
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// Go through each leaf and test for visibility.
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// Enforce the "max objects" limit along the way.
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for(osgUtil::RenderBin::RenderLeafList::iterator i = leaves.begin();
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i != leaves.end() && local._passed.size() < limit;
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++i )
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{
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bool visible = true;
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osgUtil::RenderLeaf* leaf = *i;
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const osg::Drawable* drawable = leaf->getDrawable();
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const osg::Node* drawableParent = drawable->getNumParents()? drawable->getParent(0) : 0L;
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const ScreenSpaceLayoutData* layoutData = dynamic_cast<const ScreenSpaceLayoutData*>(drawable->getUserData());
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// transform the bounding box of the drawable into window-space.
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osg::BoundingBox box = drawable->getBoundingBox();
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osg::Vec3f offset;
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osg::Quat rot;
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if (layoutData)
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{
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// local transformation data
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// and management of the label orientation (must be always readable)
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bool isText = dynamic_cast<const osgText::Text*>(drawable) != 0L;
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float angle = 0.0f;
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if (layoutData->getRotationDegrees() != 0.0f)
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{
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angle = deg2rad(layoutData->getRotationDegrees());
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}
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else
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{
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osg::Vec3d loc = layoutData->getAnchorPoint() * camVPW;
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osg::Vec3d proj = layoutData->getProjPoint() * camVPW;
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proj -= loc;
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angle = atan2(proj.y(), proj.x());
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}
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if ( isText && (angle < -osg::PI_2 || angle > osg::PI_2) )
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{
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// avoid the label characters to be inverted:
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// use a symetric translation and adapt the rotation to be in the desired angles
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offset.set( -layoutData->_pixelOffset.x() - box.xMax() - box.xMin(),
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-layoutData->_pixelOffset.y() - box.yMax() - box.yMin(),
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0.f );
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angle += angle < -osg::PI_2? osg::PI : -osg::PI; // JD #1029
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}
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else
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{
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offset.set( layoutData->_pixelOffset.x(), layoutData->_pixelOffset.y(), 0.f );
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}
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// handle the local rotation
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if ( angle != 0.f )
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{
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rot.makeRotate ( angle, osg::Vec3d(0, 0, 1) );
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osg::Vec3f ld = rot * ( osg::Vec3f(box.xMin(), box.yMin(), 0.) );
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osg::Vec3f lu = rot * ( osg::Vec3f(box.xMin(), box.yMax(), 0.) );
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osg::Vec3f ru = rot * ( osg::Vec3f(box.xMax(), box.yMax(), 0.) );
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osg::Vec3f rd = rot * ( osg::Vec3f(box.xMax(), box.yMin(), 0.) );
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if ( angle > - osg::PI / 2. && angle < osg::PI / 2.)
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box.set( osg::minimum(ld.x(), lu.x()), osg::minimum(ld.y(), rd.y()), 0,
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osg::maximum(rd.x(), ru.x()), osg::maximum(lu.y(), ru.y()), 0 );
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else
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box.set( osg::minimum(ld.x(), lu.x()), osg::minimum(lu.y(), ru.y()), 0,
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osg::maximum(ld.x(), lu.x()), osg::maximum(ld.y(), rd.y()), 0 );
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}
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offset = refCamScaleMat * offset;
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// handle the local translation
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box.xMin() += offset.x();
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box.xMax() += offset.x();
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box.yMin() += offset.y();
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box.yMax() += offset.y();
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}
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static osg::Vec4d s_zero_w(0,0,0,1);
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osg::Matrix MVP = (*leaf->_modelview.get()) * (*leaf->_projection.get());
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osg::Vec4d clip = s_zero_w * MVP;
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osg::Vec3d clip_ndc( clip.x()/clip.w(), clip.y()/clip.w(), clip.z()/clip.w() );
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// if we are using a reference camera (like for picking), we do the decluttering in
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// its viewport so that they match.
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osg::Vec3f winPos = clip_ndc * windowMatrix;
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osg::Vec3f refWinPos = clip_ndc * refWindowMatrix;
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// Expand the box if this object is currently not visible, so that it takes a little
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// more room for it to before visible once again.
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DrawableInfo& info = local._memory[drawable];
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float buffer = info._visible ? 1.0f : 3.0f;
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// The "declutter" box is the box we use to reserve screen space.
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// This must be unquantized regardless of whether snapToPixel is set.
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box.set(
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floor(refWinPos.x() + box.xMin())-buffer,
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floor(refWinPos.y() + box.yMin())-buffer,
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refWinPos.z(),
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ceil(refWinPos.x() + box.xMax())+buffer,
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ceil(refWinPos.y() + box.yMax())+buffer,
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refWinPos.z() );
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// if snapping is enabled, only snap when the camera stops moving.
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bool quantize = snapToPixel;
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if ( quantize && !camChanged )
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{
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// Quanitize the window draw coordinates to mitigate text rendering filtering anomalies.
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// Drawing text glyphs on pixel boundaries mitigates aliasing.
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// Adding 0.5 will cause the GPU to sample the glyph texels exactly on center.
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winPos.x() = floor(winPos.x()) + 0.5;
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winPos.y() = floor(winPos.y()) + 0.5;
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}
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if ( ScreenSpaceLayout::globallyEnabled )
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{
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// A max priority => never occlude.
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float priority = layoutData ? layoutData->_priority : 0.0f;
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if ( priority == FLT_MAX )
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{
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visible = true;
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}
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// if this leaf is already in a culled group, skip it.
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else if ( drawableParent != 0L && culledParents.find(drawableParent) != culledParents.end() )
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{
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visible = false;
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}
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else
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{
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// weed out any drawables that are obscured by closer drawables.
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// TODO: think about a more efficient algorithm - right now we are just using
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// brute force to compare all bbox's
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for( std::vector<RenderLeafBox>::const_iterator j = local._used.begin(); j != local._used.end(); ++j )
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{
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// only need a 2D test since we're in clip space
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bool isClear =
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box.xMin() > j->second.xMax() ||
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box.xMax() < j->second.xMin() ||
|
||
|
|
box.yMin() > j->second.yMax() ||
|
||
|
|
box.yMax() < j->second.yMin();
|
||
|
|
|
||
|
|
// if there's an overlap (and the conflict isn't from the same drawable
|
||
|
|
// parent, which is acceptable), then the leaf is culled.
|
||
|
|
if ( !isClear && drawableParent != j->first )
|
||
|
|
{
|
||
|
|
visible = false;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (visible && !drawable->getName().empty())
|
||
|
|
{
|
||
|
|
auto r = uniqueText.emplace(drawable->getName());
|
||
|
|
|
||
|
|
if (layoutData && layoutData->_unique && r.second == false)
|
||
|
|
{
|
||
|
|
visible = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( visible )
|
||
|
|
{
|
||
|
|
// passed the test, so add the leaf's bbox to the "used" list, and add the leaf
|
||
|
|
// to the final draw list.
|
||
|
|
if (drawableParent)
|
||
|
|
local._used.push_back( std::make_pair(drawableParent, box) );
|
||
|
|
|
||
|
|
local._passed.push_back( leaf );
|
||
|
|
}
|
||
|
|
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// culled, so put the parent in the parents list so that any future leaves
|
||
|
|
// with the same parent will be trivially rejected
|
||
|
|
if (drawableParent)
|
||
|
|
culledParents.insert(drawableParent);
|
||
|
|
|
||
|
|
local._failed.push_back( leaf );
|
||
|
|
}
|
||
|
|
|
||
|
|
// modify the leaf's modelview matrix to correctly position it in the 2D ortho
|
||
|
|
// projection when it's drawn later. We'll also preserve the scale.
|
||
|
|
osg::Matrix newModelView;
|
||
|
|
if ( rot.zeroRotation() )
|
||
|
|
{
|
||
|
|
newModelView.makeTranslate( osg::Vec3f(winPos.x() + offset.x(), winPos.y() + offset.y(), 0) );
|
||
|
|
newModelView.preMultScale( leaf->_modelview->getScale() * refCamScaleMat );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
offset = rot * offset;
|
||
|
|
newModelView.makeTranslate( osg::Vec3f(winPos.x() + offset.x(), winPos.y() + offset.y(), 0) );
|
||
|
|
newModelView.preMultScale( leaf->_modelview->getScale() * refCamScaleMat );
|
||
|
|
newModelView.preMultRotate( rot );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Leaf modelview matrixes are shared (by objects in the traversal stack) so we
|
||
|
|
// cannot just replace it unfortunately. Have to make a new one. Perhaps a nice
|
||
|
|
// allocation pool is in order here
|
||
|
|
leaf->_modelview = new osg::RefMatrix( newModelView );
|
||
|
|
}
|
||
|
|
|
||
|
|
// copy the final draw list back into the bin, rejecting any leaves whose parents
|
||
|
|
// are in the cull list.
|
||
|
|
if ( ScreenSpaceLayout::globallyEnabled )
|
||
|
|
{
|
||
|
|
leaves.clear();
|
||
|
|
for( osgUtil::RenderBin::RenderLeafList::const_iterator i=local._passed.begin(); i != local._passed.end(); ++i )
|
||
|
|
{
|
||
|
|
osgUtil::RenderLeaf* leaf = *i;
|
||
|
|
const osg::Drawable* drawable = leaf->getDrawable();
|
||
|
|
const osg::Node* drawableParent = drawable->getNumParents() > 0 ? drawable->getParent(0) : 0L;
|
||
|
|
|
||
|
|
if ( drawableParent == 0L || culledParents.find(drawableParent) == culledParents.end() )
|
||
|
|
{
|
||
|
|
DrawableInfo& info = local._memory[drawable];
|
||
|
|
|
||
|
|
bool fullyIn = true;
|
||
|
|
|
||
|
|
// scale in until at full scale:
|
||
|
|
if ( info._lastScale != 1.0f )
|
||
|
|
{
|
||
|
|
fullyIn = false;
|
||
|
|
info._lastScale += elapsedSeconds / osg::maximum(*options.inAnimationTime(), 0.001f);
|
||
|
|
if ( info._lastScale > 1.0f )
|
||
|
|
info._lastScale = 1.0f;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( info._lastScale != 1.0f )
|
||
|
|
leaf->_modelview->preMult( osg::Matrix::scale(info._lastScale,info._lastScale,1) );
|
||
|
|
|
||
|
|
// fade in until at full alpha:
|
||
|
|
if ( info._lastAlpha != 1.0f )
|
||
|
|
{
|
||
|
|
fullyIn = false;
|
||
|
|
info._lastAlpha += elapsedSeconds / osg::maximum(*options.inAnimationTime(), 0.001f);
|
||
|
|
if ( info._lastAlpha > 1.0f )
|
||
|
|
info._lastAlpha = 1.0f;
|
||
|
|
}
|
||
|
|
|
||
|
|
leaf->_depth = info._lastAlpha;
|
||
|
|
leaves.push_back( leaf );
|
||
|
|
|
||
|
|
info._frame++;
|
||
|
|
info._visible = true;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
local._failed.push_back(leaf);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// next, go through the FAILED list and sort them into failure bins so we can draw
|
||
|
|
// them using a different technique if necessary.
|
||
|
|
for( osgUtil::RenderBin::RenderLeafList::const_iterator i=local._failed.begin(); i != local._failed.end(); ++i )
|
||
|
|
{
|
||
|
|
osgUtil::RenderLeaf* leaf = *i;
|
||
|
|
const osg::Drawable* drawable = leaf->getDrawable();
|
||
|
|
|
||
|
|
DrawableInfo& info = local._memory[drawable];
|
||
|
|
|
||
|
|
bool isText = dynamic_cast<const osgText::Text*>(drawable) != 0L;
|
||
|
|
bool isBbox = drawable && (strcmp(drawable->className(), "BboxDrawable") == 0);
|
||
|
|
bool fullyOut = true;
|
||
|
|
|
||
|
|
if (info._frame > 0u)
|
||
|
|
{
|
||
|
|
if ( info._lastScale != *options.minAnimationScale() )
|
||
|
|
{
|
||
|
|
fullyOut = false;
|
||
|
|
info._lastScale -= elapsedSeconds / osg::maximum(*options.outAnimationTime(), 0.001f);
|
||
|
|
if ( info._lastScale < *options.minAnimationScale() )
|
||
|
|
info._lastScale = *options.minAnimationScale();
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( info._lastAlpha != *options.minAnimationAlpha() )
|
||
|
|
{
|
||
|
|
fullyOut = false;
|
||
|
|
info._lastAlpha -= elapsedSeconds / osg::maximum(*options.outAnimationTime(), 0.001f);
|
||
|
|
if ( info._lastAlpha < *options.minAnimationAlpha() )
|
||
|
|
info._lastAlpha = *options.minAnimationAlpha();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// prevent first-frame "pop out"
|
||
|
|
info._lastScale = options.minAnimationScale().get();
|
||
|
|
info._lastAlpha = options.minAnimationAlpha().get();
|
||
|
|
}
|
||
|
|
|
||
|
|
leaf->_depth = info._lastAlpha;
|
||
|
|
|
||
|
|
if ( (!isText && !isBbox) || !fullyOut )
|
||
|
|
{
|
||
|
|
if ( info._lastAlpha > 0.01f && info._lastScale >= 0.0f )
|
||
|
|
{
|
||
|
|
leaves.push_back( leaf );
|
||
|
|
|
||
|
|
// scale it:
|
||
|
|
if ( info._lastScale != 1.0f )
|
||
|
|
leaf->_modelview->preMult( osg::Matrix::scale(info._lastScale,info._lastScale,1) );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
info._frame++;
|
||
|
|
info._visible = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Custom draw routine for our declutter render bin.
|
||
|
|
*/
|
||
|
|
struct DeclutterDraw : public osgUtil::RenderBin::DrawCallback
|
||
|
|
{
|
||
|
|
ScreenSpaceLayoutContext* _context;
|
||
|
|
PerThread< osg::ref_ptr<osg::RefMatrix> > _ortho2D;
|
||
|
|
osg::ref_ptr<osg::Uniform> _fade;
|
||
|
|
|
||
|
|
struct RunningState
|
||
|
|
{
|
||
|
|
RunningState() : lastFade(-1.0f), lastPCP(NULL) { }
|
||
|
|
float lastFade;
|
||
|
|
const osg::Program::PerContextProgram* lastPCP;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Constructs the decluttering draw callback.
|
||
|
|
* @param context A shared context among all decluttering objects.
|
||
|
|
*/
|
||
|
|
DeclutterDraw( ScreenSpaceLayoutContext* context )
|
||
|
|
: _context( context )
|
||
|
|
{
|
||
|
|
// create the fade uniform.
|
||
|
|
_fade = new osg::Uniform( osg::Uniform::FLOAT, FADE_UNIFORM_NAME );
|
||
|
|
_fade->set( 1.0f );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Draws a bin. Most of this code is copied from osgUtil::RenderBin::drawImplementation.
|
||
|
|
* The modifications are (a) skipping code to render child bins, (b) setting a bin-global
|
||
|
|
* projection matrix in orthographic space, and (c) calling our custom "renderLeaf()" method
|
||
|
|
* instead of RenderLeaf::render()
|
||
|
|
*/
|
||
|
|
void drawImplementation( osgUtil::RenderBin* bin, osg::RenderInfo& renderInfo, osgUtil::RenderLeaf*& previous )
|
||
|
|
{
|
||
|
|
osg::State& state = *renderInfo.getState();
|
||
|
|
|
||
|
|
unsigned int numToPop = (previous ? osgUtil::StateGraph::numToPop(previous->_parent) : 0);
|
||
|
|
if (numToPop>1) --numToPop;
|
||
|
|
unsigned int insertStateSetPosition = state.getStateSetStackSize() - numToPop;
|
||
|
|
|
||
|
|
if (bin->getStateSet())
|
||
|
|
{
|
||
|
|
state.insertStateSet(insertStateSetPosition, bin->getStateSet());
|
||
|
|
}
|
||
|
|
|
||
|
|
// apply a window-space projection matrix.
|
||
|
|
const osg::Viewport* vp = renderInfo.getCurrentCamera()->getViewport();
|
||
|
|
if ( vp )
|
||
|
|
{
|
||
|
|
osg::ref_ptr<osg::RefMatrix>& m = _ortho2D.get();
|
||
|
|
if ( !m.valid() )
|
||
|
|
m = new osg::RefMatrix();
|
||
|
|
|
||
|
|
//m->makeOrtho2D( vp->x(), vp->x()+vp->width()-1, vp->y(), vp->y()+vp->height()-1 );
|
||
|
|
m->makeOrtho( vp->x(), vp->x()+vp->width()-1, vp->y(), vp->y()+vp->height()-1, -1000, 1000);
|
||
|
|
state.applyProjectionMatrix( m.get() );
|
||
|
|
}
|
||
|
|
|
||
|
|
// initialize the fading uniform
|
||
|
|
RunningState rs;
|
||
|
|
|
||
|
|
// render the list
|
||
|
|
osgUtil::RenderBin::RenderLeafList& leaves = bin->getRenderLeafList();
|
||
|
|
|
||
|
|
for(osgUtil::RenderBin::RenderLeafList::reverse_iterator rlitr = leaves.rbegin();
|
||
|
|
rlitr!= leaves.rend();
|
||
|
|
++rlitr)
|
||
|
|
{
|
||
|
|
osgUtil::RenderLeaf* rl = *rlitr;
|
||
|
|
if ( rl->_depth > 0.0f)
|
||
|
|
{
|
||
|
|
renderLeaf( rl, renderInfo, previous, rs);
|
||
|
|
previous = rl;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( bin->getStateSet() )
|
||
|
|
{
|
||
|
|
state.removeStateSet(insertStateSetPosition);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Renders a single leaf. We already applied the projection matrix, so here we only
|
||
|
|
* need to apply a modelview matrix that specifies the ortho offset of the drawable.
|
||
|
|
*
|
||
|
|
* Most of this code is copied from RenderLeaf::draw() -- but I removed all the code
|
||
|
|
* dealing with nested bins, since decluttering does not support them.
|
||
|
|
*/
|
||
|
|
void renderLeaf( osgUtil::RenderLeaf* leaf, osg::RenderInfo& renderInfo, osgUtil::RenderLeaf*& previous, RunningState& rs)
|
||
|
|
{
|
||
|
|
osg::State& state = *renderInfo.getState();
|
||
|
|
|
||
|
|
// don't draw this leaf if the abort rendering flag has been set.
|
||
|
|
if (state.getAbortRendering())
|
||
|
|
{
|
||
|
|
//cout << "early abort"<<endl;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
state.applyModelViewMatrix( leaf->_modelview.get() );
|
||
|
|
|
||
|
|
if (previous)
|
||
|
|
{
|
||
|
|
// apply state if required.
|
||
|
|
osgUtil::StateGraph* prev_rg = previous->_parent;
|
||
|
|
osgUtil::StateGraph* prev_rg_parent = prev_rg->_parent;
|
||
|
|
osgUtil::StateGraph* rg = leaf->_parent;
|
||
|
|
if (prev_rg_parent!=rg->_parent)
|
||
|
|
{
|
||
|
|
osgUtil::StateGraph::moveStateGraph(state,prev_rg_parent,rg->_parent);
|
||
|
|
|
||
|
|
// send state changes and matrix changes to OpenGL.
|
||
|
|
state.apply(rg->getStateSet());
|
||
|
|
|
||
|
|
}
|
||
|
|
else if (rg!=prev_rg)
|
||
|
|
{
|
||
|
|
// send state changes and matrix changes to OpenGL.
|
||
|
|
state.apply(rg->getStateSet());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// apply state if required.
|
||
|
|
osgUtil::StateGraph::moveStateGraph(state,NULL,leaf->_parent->_parent);
|
||
|
|
|
||
|
|
state.apply(leaf->_parent->getStateSet());
|
||
|
|
}
|
||
|
|
|
||
|
|
// if we are using osg::Program which requires OSG's generated uniforms to track
|
||
|
|
// modelview and projection matrices then apply them now.
|
||
|
|
if (state.getUseModelViewAndProjectionUniforms())
|
||
|
|
state.applyModelViewAndProjectionUniformsIfRequired();
|
||
|
|
|
||
|
|
// apply the fading uniform
|
||
|
|
const osg::Program::PerContextProgram* pcp = state.getLastAppliedProgramObject();
|
||
|
|
if ( pcp )
|
||
|
|
{
|
||
|
|
if (pcp != rs.lastPCP || leaf->_depth != rs.lastFade)
|
||
|
|
{
|
||
|
|
rs.lastFade = ScreenSpaceLayout::globallyEnabled ? leaf->_depth : 1.0f;
|
||
|
|
_fade->set( rs.lastFade );
|
||
|
|
pcp->apply( *_fade.get() );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
rs.lastPCP = pcp;
|
||
|
|
|
||
|
|
// draw the drawable
|
||
|
|
leaf->_drawable->draw(renderInfo);
|
||
|
|
|
||
|
|
if (leaf->_dynamic)
|
||
|
|
{
|
||
|
|
state.decrementDynamicObjectCount();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
} }
|
||
|
|
|
||
|
|
#endif // OSGEARTH_SCREEN_SPACE_LAYOUT_DECLUTTER_H
|