101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
// Filename: cullBinBackToFront.cxx
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// Created by: drose (28Feb02)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#include "cullBinBackToFront.h"
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#include "graphicsStateGuardianBase.h"
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#include "geometricBoundingVolume.h"
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#include "cullableObject.h"
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#include "cullHandler.h"
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#include "pStatTimer.h"
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#include <algorithm>
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TypeHandle CullBinBackToFront::_type_handle;
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////////////////////////////////////////////////////////////////////
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// Function: CullBinBackToFront::Destructor
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// Access: Public, Virtual
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// Description:
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////////////////////////////////////////////////////////////////////
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CullBinBackToFront::
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~CullBinBackToFront() {
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Objects::iterator oi;
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for (oi = _objects.begin(); oi != _objects.end(); ++oi) {
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CullableObject *object = (*oi)._object;
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delete object;
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}
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}
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////////////////////////////////////////////////////////////////////
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// Function: CullBinBackToFront::add_object
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// Access: Public, Virtual
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// Description: Adds a geom, along with its associated state, to
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// the bin for rendering.
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////////////////////////////////////////////////////////////////////
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void CullBinBackToFront::
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add_object(CullableObject *object) {
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// Determine the center of the bounding volume.
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const BoundingVolume &volume = object->_geom->get_bound();
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if (!volume.is_empty() &&
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volume.is_of_type(GeometricBoundingVolume::get_class_type())) {
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const GeometricBoundingVolume *gbv;
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DCAST_INTO_V(gbv, &volume);
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LPoint3f center = gbv->get_approx_center();
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nassertv(object->_modelview_transform != (const TransformState *)NULL);
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center = center * object->_modelview_transform->get_mat();
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float distance = _gsg->compute_distance_to(center);
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_objects.push_back(ObjectData(object, distance));
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}
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}
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////////////////////////////////////////////////////////////////////
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// Function: CullBinBackToFront::finish_cull
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// Access: Public
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// Description: Called after all the geoms have been added, this
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// indicates that the cull process is finished for this
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// frame and gives the bins a chance to do any
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// post-processing (like sorting) before moving on to
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// draw.
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////////////////////////////////////////////////////////////////////
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void CullBinBackToFront::
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finish_cull() {
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PStatTimer timer(_cull_this_pcollector);
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sort(_objects.begin(), _objects.end());
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}
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////////////////////////////////////////////////////////////////////
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// Function: CullBinBackToFront::draw
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// Access: Public
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// Description: Draws all the geoms in the bin, in the appropriate
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// order.
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////////////////////////////////////////////////////////////////////
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void CullBinBackToFront::
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draw() {
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PStatTimer timer(_draw_this_pcollector);
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Objects::const_iterator oi;
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for (oi = _objects.begin(); oi != _objects.end(); ++oi) {
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CullableObject *object = (*oi)._object;
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CullHandler::draw(object, _gsg);
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}
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}
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