void setup() {
ofBackground(255);
ofSetFrameRate(60);
config.load("config.xml");
defaultLength = config.getFloatValue("cable/length/default");
minLength = config.getFloatValue("cable/length/min");
maxLength = config.getFloatValue("cable/length/max");
host = config.getValue("osc/host");
sendPort = config.getIntValue("osc/sendPort");
receivePort = config.getIntValue("osc/receive");
oscSend.setup(host, sendPort);
oscReceive.setup(receivePort);
local.setup("Local");
remote.setup("Remote");
zeros.setup("Zeros");
zeros.add(nwZero.setup("NW Zero"));
zeros.add(neZero.setup("NE Zero"));
zeros.add(seZero.setup("SE Zero"));
zeros.add(swZero.setup("SW Zero"));
nwZero.addListener(this, &ofApp::zeroNW);
neZero.addListener(this, &ofApp::zeroNE);
seZero.addListener(this, &ofApp::zeroSE);
swZero.addListener(this, &ofApp::zeroSW);
local.gui.loadFromFile("settings.xml");
local.gui.setPosition(10, 10);
zeros.setPosition(10, 200);
remote.gui.setPosition(10, 310);
}
void ofxShaderGraph::buildFromXml(ofXml x){
unordered_set<string> root_names;
x.reset();
unsigned long n = x.getNumChildren();
params.setName(x.getName());
//first pass, create all nodes and set defaults
for(unsigned long i=0; i<n; i++){
x.reset();
x.setToChild(i);
if(x.getName()!="node")
continue;
string name = x.getAttribute("name");
if(name==""){
cout<<"ofxShaderGraph warning: anonymous node in XML"<<endl;
continue;
}
ofxBaseShaderNode *node;
ofFbo::Settings node_fbo_settings = fbo_settings;
//check for modifications to fbo_settings
if(x.setTo("scale")){
float scale = x.getFloatValue();
node_fbo_settings.width*=scale;
node_fbo_settings.height*=scale;
x.setToParent();
}
string format = x.getAttribute("format");
if(format!=""){
if(format=="rgba8")
node_fbo_settings.internalformat = GL_RGBA8;
else if(format=="rgba16")
node_fbo_settings.internalformat = GL_RGBA16;
else if(format=="rgba32f")
node_fbo_settings.internalformat = GL_RGBA32F;
else if(format=="rgba16f")
node_fbo_settings.internalformat = GL_RGBA16F;
else if(format=="rgb8")
node_fbo_settings.internalformat = GL_RGB8;
else if(format=="rgb16")
node_fbo_settings.internalformat = GL_RGB16;
else if(format=="rgb32f")
node_fbo_settings.internalformat = GL_RGB32F;
else if(format=="rgb16f")
node_fbo_settings.internalformat = GL_RGB16F;
}
//check for node to swap buffers with
string swap_name = x.getAttribute("swap");
if(swap_name != ""){
//don't duplicate pairs
if(swap.count(swap_name)==0){
cout<<"ofxShaderGraph: "<<name<<" swaps with "<<swap_name<<endl;
swap.insert(pair<string, string>(name, swap_name));
}else{
cout<<"ofxShaderGraph warning: ignoring duplicate swap of"<<name<<" with "<<swap_name<<endl;
}
}
//check for color to init buffer to
if(x.setTo("init")){
float val = x.getFloatValue();
init.insert(pair<string, float>(name, val));
x.setToParent();
}
//check for shader path
string shader_name = x.getAttribute("shader");
if(shader_name == ""){
//shaderless node
node = new ofxConstantShaderNode(allocator, node_fbo_settings, name);
}
else{
ofShader *shader = new ofShader();
stringstream shader_path;
shader_path<<ofToDataPath("../../src/shader/")<<shader_name;
shader->load(shader_path.str());
if(!shader->isLoaded()){
cout<<"ofxShaderGraph warning: shader "<<shader_name<<" failed to load from path "<<shader_path.str()<<endl;
}
else{
cout<<"ofxShaderGraph: loaded shader "<<shader_name<<endl;
}
node = new ofxBaseShaderNode(allocator, node_fbo_settings, name, shader);
}
//grab all of the new node's parameters
params.add(node->getParameterGroup());
//put it in the map from names to nodes
nodes.insert(pair<string, ofxBaseShaderNode*>(name, node));
//everything goes in root_names, to be removed when is appears as an input
root_names.insert(name);
cout<<"ofxShaderGraph: inserted node "<<name<<endl;
//set defaults
if(x.setTo("defaults") && x.setToChild(0)){
do{
string param_type = x.getName();
string param_name = x.getAttribute("name");
if(param_type=="float"){
float v = x.getFloatValue();
node->setParameter(param_name, v);
}else if(param_type=="int"){
int v = x.getIntValue();
node->setParameter(param_name, v);
}else{
cout<<"ofxShaderGraph warning: parameter type "<<param_type<<" unsupported"<<endl;
}
}while(x.setToSibling());
x.setToParent();
x.setToParent();
}
//set aliases
/*if(x.setTo("aliases") && x.setToChild(0)){
do{
string param_type = x.getName();
string param_name = x.getAttribute("name");
string alias_name = x.getValue();
if(param_type=="float"){
auto alias_param = aliases.getFloat(alias_name);
node->setParameterAlias(param_name, alias_param);
}else if(param_type=="int"){
auto alias_param = aliases.getInt(alias_name);
node->setParameterAlias(param_name, alias_param);
}else{
cout<<"ofxShaderGraph warning: aliased parameter type "<<param_type<<" unsupported"<<endl;
}
}while(x.setToSibling());
x.setToParent();
x.setToParent();
}*/
}
//second pass, fill in inputs for each node and remove all referenced nodes from root_names
for(unsigned long i=0; i<n; i++){
x.reset();
x.setToChild(i);
if(x.getName()!="node")
continue;
string name = x.getAttribute("name");
if(name=="")
continue;
ofxBaseShaderNode *node = nodes[name];
//set inputs
if(!x.setTo("inputs"))
continue;
if(!x.setToChild(0))
continue;
do{
string input_name = x.getValue();
if(nodes.find(input_name) == nodes.end()){
cout << "ofxShaderGraph error: node "<<name<<" lists input "<<input_name<<" which does not exist"<<endl;
}
else{
ofxBaseShaderNode *input = nodes.at(input_name);
node->inputs.push_back(input);
input->num_dependents++;
root_names.erase(input_name);
cout<<"ofxShaderGraph: connected node "<<input_name<<" to node "<<name<<endl;
}
}while(x.setToSibling());
}
//populate roots
for(string root_name:root_names){
ofxBaseShaderNode *root_node = nodes.at(root_name);
roots.insert(root_node);
cout<<"ofxShaderGraph: node "<<root_name<<" is a root"<<endl;
}
}