void GraphScene::init(InitType initType)
{
// Remove all nodes from the scene (and thus also connecting edges)
for (int row = 0; row < m_gridLayout->rowCount(); row++) {
for (int column = 0; column < m_gridLayout->columnCount(); column++) {
// If there is a node in that cell of the grid layout, remove it
removeItem(static_cast<NodeItem *>(m_gridLayout->itemAt(row, column)));
}
}
switch(initType) { // Check how to init the scene
case EmptyInit:
setInputNode(NULL); // Reset input/output nodes
setOuputNode(NULL);
break;
case StandardInit:
NodeItem *n1 = new NodeItem(NULL, this); // Create default input/output nodes
n1->setName("1");
m_gridLayout->addItem(n1, 0, 0);
NodeItem *n2 = new NodeItem(NULL, this);
n2->setName("2");
m_gridLayout->addItem(n2, 0, 1);
addEdge(n1, n2); // and wire them with an edge
setInputNode(n1); // Set default input/output nodes
setOuputNode(n2);
break;
}
setSceneRect(QRectF());
emit graphChanged();
}
MultipannerNode::MultipannerNode(std::shared_ptr<Simulation> sim, std::shared_ptr<HrtfData> hrtf): SubgraphNode(Lav_OBJTYPE_MULTIPANNER_NODE, sim) {
hrtf_panner = createHrtfNode(sim, hrtf);
amplitude_panner = createAmplitudePannerNode(sim);
input=createGainNode(simulation);
input->resize(1, 1);
input->appendInputConnection(0, 1);
input->appendOutputConnection(0, 1);
input->connect(0, hrtf_panner, 0);
input->connect(0, amplitude_panner, 0);
appendOutputConnection(0, 0);
setInputNode(input);
}
PannerBankNode::PannerBankNode(std::shared_ptr<Simulation> sim, int pannerCount, std::shared_ptr<HrtfData> hrtf): SubgraphNode(Lav_OBJTYPE_PANNER_BANK_NODE, sim) {
if(pannerCount < 2) ERROR(Lav_ERROR_RANGE, "Must use at least 2 panners.");
input_gain = createGainNode(simulation);
output_gain =createGainNode(simulation);
input_gain->resize(pannerCount, pannerCount);
for(int i = 0; i < pannerCount; i++) {
input_gain->appendInputConnection(i, 1);
input_gain->appendOutputConnection(i, 1);
}
output_gain->resize(2, 2);
output_gain->appendInputConnection(0, 2);
output_gain->appendOutputConnection(0, 2);
setInputNode(input_gain);
setOutputNode(output_gain);
for(int i = 0; i < pannerCount; i++) {
panners.push_back(createMultipannerNode(simulation, hrtf));
input_gain->connect(i, panners[i], 0);
panners[i]->connect(0, output_gain, 0);
}
appendOutputConnection(0, 2);
}
bool GraphScene::loadFrom(const QString &fileName)
{
QFile file(fileName);
if (file.exists() && file.open(QFile::ReadOnly)) {
QTextStream stream(&file);
QHash<QString, NodeItem *> nodes; // Temporary hashmap for faster lookup
init(EmptyInit); // Create an empty scene
QString line;
do { // Iterate over all the lines in the file
line = stream.readLine(); // and split the line at ' ' characters
const QStringList splittedLine = line.split(" ");
if (splittedLine[0] == "node") {
// Found a node, add it to the scene
NodeItem *node = new NodeItem(NULL, this);
node->setName(splittedLine[1]);
NodeItem::NodeType nodeType = static_cast<NodeItem::NodeType>(splittedLine[2].toInt());
switch (nodeType) {
case NodeItem::InputNode:
setInputNode(node); // We found the input node
break;
case NodeItem::OutputNode:
setOuputNode(node); // We found the ouput node
break;
case NodeItem::StandardNode:
// This should already be set by default but doesn't harm here
node->setNodeType(NodeItem::StandardNode);
break;
}
// There is obviously a (Matlab) formula attached, parse it...
if (splittedLine.length() > 5) {
int formulaStart = line.indexOf('"');
QString formula = line;
formula.remove(0, formulaStart);
while (!formula.endsWith('"')) { // Formula spans multiple lines
formula += '\n' + stream.readLine();
}
formula.chop(1); // Remove leading '"'
formula.remove(0, 1); // Remove trailing '"'
node->setFormula(formula);
}
nodes.insert(node->name(), node);
m_gridLayout->addItem(node, splittedLine[3].toInt(), splittedLine[4].toInt());
} else if (splittedLine[0] == "edge") {
NodeItem *start = nodes[splittedLine[2]]; // Found an edge, add it to the scene
NodeItem *end = nodes[splittedLine[3]];
DirectedEdgeItem *edge = addEdge(start, end);
edge->setName(splittedLine[1]);
// There is obviously a (Matlab) formula attached, parse it...
if (splittedLine.length() > 4) {
int formulaStart = line.indexOf('"');
QString formula = line;
formula.remove(0, formulaStart);
while (!formula.endsWith('"')) { // Formula spans multiple lines
formula += '\n' + stream.readLine();
}
formula.chop(1); // Remove leading '"'
formula.remove(0, 1); // Remove trailing '"'
edge->setFormula(formula);
}
}
} while (!line.isNull());
emit graphChanged();
file.close();
return true;
}
return false;
}
