108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file analogNode.cxx
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* @author drose
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* @date 2002-03-12
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*/
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#include "analogNode.h"
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#include "config_device.h"
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#include "dataNodeTransmit.h"
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#include "dcast.h"
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TypeHandle AnalogNode::_type_handle;
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/**
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*
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*/
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AnalogNode::
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AnalogNode(ClientBase *client, const string &device_name) :
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DataNode(device_name)
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{
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_xy_output = define_output("xy", EventStoreVec2::get_class_type());
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_xy = new EventStoreVec2(LPoint2(0.0f, 0.0f));
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nassertv(client != (ClientBase *)NULL);
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PT(ClientDevice) device =
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client->get_device(ClientAnalogDevice::get_class_type(), device_name);
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if (device == (ClientDevice *)NULL) {
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device_cat.warning()
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<< "Unable to open analog device " << device_name << "\n";
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return;
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}
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if (!device->is_of_type(ClientAnalogDevice::get_class_type())) {
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device_cat.error()
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<< "Inappropriate device type " << device->get_type()
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<< " created; expected a ClientAnalogDevice.\n";
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return;
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}
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_analog = DCAST(ClientAnalogDevice, device);
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}
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/**
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*
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*/
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AnalogNode::
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~AnalogNode() {
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// When the _analog pointer destructs, the ClientAnalogDevice disconnects
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// itself from the ClientBase, and everything that needs to get turned off
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// does. Magic.
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}
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/**
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*
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*/
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void AnalogNode::
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write(ostream &out, int indent_level) const {
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DataNode::write(out, indent_level);
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if (_analog != (ClientAnalogDevice *)NULL) {
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_analog->acquire();
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_analog->write_controls(out, indent_level + 2);
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_analog->unlock();
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}
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}
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/**
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* The virtual implementation of transmit_data(). This function receives an
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* array of input parameters and should generate an array of output
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* parameters. The input parameters may be accessed with the index numbers
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* returned by the define_input() calls that were made earlier (presumably in
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* the constructor); likewise, the output parameters should be set with the
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* index numbers returned by the define_output() calls.
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*/
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void AnalogNode::
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do_transmit_data(DataGraphTraverser *, const DataNodeTransmit &,
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DataNodeTransmit &output) {
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if (is_valid()) {
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_analog->poll();
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LPoint2 out(0.0f, 0.0f);
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_analog->acquire();
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for (int i = 0; i < max_outputs; i++) {
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if (_outputs[i]._index >= 0 &&
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_analog->is_control_known(_outputs[i]._index)) {
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if (_outputs[i]._flip) {
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out[i] = -_analog->get_control_state(_outputs[i]._index);
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} else {
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out[i] = _analog->get_control_state(_outputs[i]._index);
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}
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}
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}
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_analog->unlock();
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_xy->set_value(out);
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output.set_data(_xy_output, EventParameter(_xy));
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}
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}
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