91 lines
3.4 KiB
C++
91 lines
3.4 KiB
C++
// Filename: dataNode.cxx
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// Created by: drose (26Jan99)
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//
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////////////////////////////////////////////////////////////////////
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#include "dataNode.h"
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TypeHandle DataNode::_type_handle;
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////////////////////////////////////////////////////////////////////
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// Function: DataNode::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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DataNode::
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DataNode(const string &name) : NamedNode(name) {
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_spam_mode = false;
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}
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////////////////////////////////////////////////////////////////////
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// Function: DataNode::transmit_data_per_child
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// Access: Public, Virtual
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// Description: Should be overridden in a derived class that wants to
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// send a different data stream to each child.
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// Normally, a node only overrides transmit_data(),
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// which takes a set of input data attributes and
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// generates a set of output data attributes. A node
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// may also override transmit_data_per_child(), which is
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// called after transmit_data(), once per child; this
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// function may be used to send individual data
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// attributes to each child.
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////////////////////////////////////////////////////////////////////
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void DataNode::
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transmit_data_per_child(NodeAttributes &, int) {
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}
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////////////////////////////////////////////////////////////////////
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// Function: DataNode::set_spam_mode
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// Access: Public
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// Description: Sets the "spam" flag, which if set indicates that all
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// data produced from this DataNode, along with all data
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// derived from it downstream, should be reported to the
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// user. Handy for figuring out where things are going
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// wrong.
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////////////////////////////////////////////////////////////////////
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void DataNode::
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set_spam_mode(bool flag) {
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_spam_mode = flag;
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}
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////////////////////////////////////////////////////////////////////
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// Function: DataNode::get_spam_mode
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// Access: Public
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// Description: Gets the current state of the "spam" flag. See
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// set_spam_mode.
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////////////////////////////////////////////////////////////////////
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bool DataNode::
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get_spam_mode() const {
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return _spam_mode;
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}
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////////////////////////////////////////////////////////////////////
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// Function: register_data_transition
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// Description: Defines a new data transition of the indicated name
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// and inheriting from the indicated transition type.
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// This will represent a channel of data, for instance a
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// 3-component position from a tracker.
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//
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// All data transitions that have a common name and base
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// class will share the same TypeHandle. This makes it
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// possible to unify data producers and consumers based
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// on the TypeHandle of the data they share.
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////////////////////////////////////////////////////////////////////
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void
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register_data_transition(TypeHandle &type_handle, const string &name,
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TypeHandle derived_from) {
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// Make sure the user gave us a transition type as the base.
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nassertv(derived_from.is_derived_from(NodeTransition::get_class_type()));
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string actual_name = name + "_" + derived_from.get_name();
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type_handle = TypeRegistry::ptr()->find_type(actual_name);
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if (type_handle == TypeHandle::none()) {
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register_type(type_handle, actual_name, derived_from);
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}
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}
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