Panda3D
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dialNode.cxx
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file dialNode.cxx
10 * @author drose
11 * @date 2002-03-12
12 */
13
14#include "dialNode.h"
15#include "config_device.h"
16#include "dataNodeTransmit.h"
17#include "dcast.h"
18
19TypeHandle DialNode::_type_handle;
20
21/**
22 *
23 */
24DialNode::
25DialNode(ClientBase *client, const std::string &device_name) :
26 DataNode(device_name)
27{
28 nassertv(client != nullptr);
29 PT(ClientDevice) device =
30 client->get_device(ClientDialDevice::get_class_type(), device_name);
31
32 if (device == nullptr) {
33 device_cat.warning()
34 << "Unable to open dial device " << device_name << "\n";
35 return;
36 }
37
38 if (!device->is_of_type(ClientDialDevice::get_class_type())) {
39 device_cat.error()
40 << "Inappropriate device type " << device->get_type()
41 << " created; expected a ClientDialDevice.\n";
42 return;
43 }
44
45 _dial = DCAST(ClientDialDevice, device);
46}
47
48/**
49 *
50 */
51DialNode::
52~DialNode() {
53 // When the _dial pointer destructs, the ClientDialDevice disconnects itself
54 // from the ClientBase, and everything that needs to get turned off does.
55 // Magic.
56}
57
58/**
59 * The virtual implementation of transmit_data(). This function receives an
60 * array of input parameters and should generate an array of output
61 * parameters. The input parameters may be accessed with the index numbers
62 * returned by the define_input() calls that were made earlier (presumably in
63 * the constructor); likewise, the output parameters should be set with the
64 * index numbers returned by the define_output() calls.
65 */
66void DialNode::
67do_transmit_data(DataGraphTraverser *, const DataNodeTransmit &,
68 DataNodeTransmit &output) {
69 if (is_valid()) {
70 _dial->poll();
71
72 // Not clear yet what we should be transmitting.
73 }
74}
An abstract base class for a family of client device interfaces–including trackers,...
Definition clientBase.h:43
Any of a number of different devices that might be attached to a ClientBase, including trackers,...
A device, attached to the ClientBase by a DialNode, that records the data from a single named dial de...
This object supervises the traversal of the data graph and the moving of data from one DataNode to it...
Encapsulates the data generated from (or sent into) any particular DataNode.
The fundamental type of node for the data graph.
Definition dataNode.h:52
bool is_valid() const
Returns true if the DialNode is valid and connected to a server, false otherwise.
Definition dialNode.I:19
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.