193 lines
6.6 KiB
C++
193 lines
6.6 KiB
C++
// Filename: lensNode.cxx
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// Created by: drose (26Feb02)
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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, 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://www.panda3d.org/license.txt .
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//
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// To contact the maintainers of this program write to
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// panda3d@yahoogroups.com .
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//
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////////////////////////////////////////////////////////////////////
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#include "lensNode.h"
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#include "geometricBoundingVolume.h"
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#include "bamWriter.h"
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#include "bamReader.h"
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#include "datagram.h"
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#include "datagramIterator.h"
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TypeHandle LensNode::_type_handle;
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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LensNode::
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LensNode(const string &name) :
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PandaNode(name)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::Copy Constructor
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// Access: Protected
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// Description:
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////////////////////////////////////////////////////////////////////
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LensNode::
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LensNode(const LensNode ©) :
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PandaNode(copy),
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_lens(copy._lens)
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{
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::xform
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// Access: Public, Virtual
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// Description: Transforms the contents of this PandaNode by the
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// indicated matrix, if it means anything to do so. For
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// most kinds of PandaNodes, this does nothing.
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////////////////////////////////////////////////////////////////////
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void LensNode::
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xform(const LMatrix4f &mat) {
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PandaNode::xform(mat);
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// We need to actually transform the lens here.
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::make_copy
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// Access: Public, Virtual
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// Description: Returns a newly-allocated Node that is a shallow copy
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// of this one. It will be a different Node pointer,
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// but its internal data may or may not be shared with
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// that of the original Node.
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////////////////////////////////////////////////////////////////////
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PandaNode *LensNode::
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make_copy() const {
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return new LensNode(*this);
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::is_in_view
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// Access: Public
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// Description: Returns true if the given point is within the bounds
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// of the lens of the LensNode (i.e. if the camera can
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// see the point).
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////////////////////////////////////////////////////////////////////
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bool LensNode::
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is_in_view(const LPoint3f &pos) {
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PT(BoundingVolume) bv = _lens->make_bounds();
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if (bv == (BoundingVolume *)NULL) {
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return false;
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}
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GeometricBoundingVolume *gbv = DCAST(GeometricBoundingVolume, bv);
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int ret = gbv->contains(pos);
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return (ret != 0);
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::output
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// Access: Public, Virtual
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// Description:
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////////////////////////////////////////////////////////////////////
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void LensNode::
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output(ostream &out) const {
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PandaNode::output(out);
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if (_lens != (Lens *)NULL) {
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out << " (";
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_lens->output(out);
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out << ")";
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}
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::write
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// Access: Public, Virtual
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// Description:
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////////////////////////////////////////////////////////////////////
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void LensNode::
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write(ostream &out, int indent_level) const {
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PandaNode::write(out, indent_level);
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if (_lens != (Lens *)NULL) {
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_lens->write(out, indent_level + 2);
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}
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::register_with_read_factory
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// Access: Public, Static
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// Description: Tells the BamReader how to create objects of type
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// LensNode.
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////////////////////////////////////////////////////////////////////
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void LensNode::
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register_with_read_factory() {
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BamReader::get_factory()->register_factory(get_class_type(), make_from_bam);
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::write_datagram
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// Access: Public, Virtual
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// Description: Writes the contents of this object to the datagram
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// for shipping out to a Bam file.
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////////////////////////////////////////////////////////////////////
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void LensNode::
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write_datagram(BamWriter *manager, Datagram &dg) {
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PandaNode::write_datagram(manager, dg);
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// We should actually write out the lens. Easy to do, but not
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// immediately pressing; I hope no one gets burned by the omission.
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::complete_pointers
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// Access: Public, Virtual
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// Description: Receives an array of pointers, one for each time
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// manager->read_pointer() was called in fillin().
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// Returns the number of pointers processed.
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////////////////////////////////////////////////////////////////////
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int LensNode::
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complete_pointers(TypedWritable **p_list, BamReader *manager) {
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int pi = PandaNode::complete_pointers(p_list, manager);
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return pi;
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::make_from_bam
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// Access: Protected, Static
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// Description: This function is called by the BamReader's factory
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// when a new object of type LensNode is encountered
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// in the Bam file. It should create the LensNode
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// and extract its information from the file.
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////////////////////////////////////////////////////////////////////
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TypedWritable *LensNode::
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make_from_bam(const FactoryParams ¶ms) {
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LensNode *node = new LensNode("");
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DatagramIterator scan;
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BamReader *manager;
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parse_params(params, scan, manager);
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node->fillin(scan, manager);
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return node;
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}
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////////////////////////////////////////////////////////////////////
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// Function: LensNode::fillin
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// Access: Protected
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// Description: This internal function is called by make_from_bam to
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// read in all of the relevant data from the BamFile for
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// the new LensNode.
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////////////////////////////////////////////////////////////////////
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void LensNode::
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fillin(DatagramIterator &scan, BamReader *manager) {
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PandaNode::fillin(scan, manager);
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}
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