mirror of
https://github.com/panda3d/panda3d.git
synced 2025-10-04 02:42:49 -04:00
99 lines
3.4 KiB
C++
99 lines
3.4 KiB
C++
// Filename: cullHandler.cxx
|
|
// Created by: drose (23Feb02)
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
//
|
|
// PANDA 3D SOFTWARE
|
|
// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
|
|
//
|
|
// All use of this software is subject to the terms of the Panda 3d
|
|
// Software license. You should have received a copy of this license
|
|
// along with this source code; you will also find a current copy of
|
|
// the license at http://etc.cmu.edu/panda3d/docs/license/ .
|
|
//
|
|
// To contact the maintainers of this program write to
|
|
// panda3d-general@lists.sourceforge.net .
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
#include "cullHandler.h"
|
|
#include "cullableObject.h"
|
|
#include "geom.h"
|
|
#include "transformState.h"
|
|
#include "renderState.h"
|
|
#include "pnotify.h"
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: CullHandler::Destructor
|
|
// Access: Public, Virtual
|
|
// Description:
|
|
////////////////////////////////////////////////////////////////////
|
|
CullHandler::
|
|
~CullHandler() {
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: CullHandler::record_object
|
|
// Access: Public, Virtual
|
|
// Description: This callback function is intended to be overridden
|
|
// by a derived class. This is called as each Geom is
|
|
// discovered by the CullTraverser.
|
|
//
|
|
// The CullHandler becomes the owner of the
|
|
// CullableObject pointer and is expected to delete it
|
|
// later.
|
|
////////////////////////////////////////////////////////////////////
|
|
void CullHandler::
|
|
record_object(CullableObject *object, const CullTraverser *traverser) {
|
|
nout << *object->_geom << " " << *object->_modelview_transform << " "
|
|
<< *object->_state << "\n";
|
|
delete object;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: CullHandler::draw_with_decals
|
|
// Access: Public, Static
|
|
// Description: Draws the indicated CullableObject, assuming it has
|
|
// attached decals.
|
|
////////////////////////////////////////////////////////////////////
|
|
void CullHandler::
|
|
draw_with_decals(CullableObject *object, GraphicsStateGuardianBase *gsg) {
|
|
// We draw with a three-step process.
|
|
|
|
// First, render all of the base geometry for the first pass.
|
|
CPT(RenderState) state = gsg->begin_decal_base_first();
|
|
|
|
CullableObject *base = object;
|
|
while (base != (CullableObject *)NULL && base->_geom != (Geom *)NULL) {
|
|
gsg->set_state_and_transform(base->_state->compose(state), base->_modelview_transform);
|
|
base->draw(gsg);
|
|
|
|
base = base->_next;
|
|
}
|
|
|
|
if (base != (CullableObject *)NULL) {
|
|
// Now, draw all the decals.
|
|
state = gsg->begin_decal_nested();
|
|
|
|
CullableObject *decal = base->_next;
|
|
while (decal != (CullableObject *)NULL) {
|
|
gsg->set_state_and_transform(decal->_state->compose(state), decal->_modelview_transform);
|
|
decal->draw(gsg);
|
|
decal = decal->_next;
|
|
}
|
|
}
|
|
|
|
// And now, re-draw the base geometry, if required.
|
|
state = gsg->begin_decal_base_second();
|
|
if (state != (const RenderState *)NULL) {
|
|
base = object;
|
|
while (base != (CullableObject *)NULL && base->_geom != (Geom *)NULL) {
|
|
gsg->set_state_and_transform(base->_state->compose(state), base->_modelview_transform);
|
|
base->draw(gsg);
|
|
|
|
base = base->_next;
|
|
}
|
|
}
|
|
}
|
|
|