void Stimulus3DShaderDemo::receive_json_message(const std::string& topic_name,
const std::string& json_message) {
json_t *root;
json_error_t error;
root = json_loads(json_message.c_str(), 0, &error);
if(!root) {
throw std::runtime_error("error in json");
}
json_t *data_json = json_object_get(root, "data");
if (data_json==NULL) {
throw std::runtime_error("key not in JSON");
}
if(!json_is_number(data_json)){
throw std::runtime_error("error in json");
}
_example_param = json_number_value( data_json );
example_param_uniform->set(_example_param);
}
bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&)
{
if (!unit || !dt || !intensity) return false;
float i,t;
intensity->get(i);
dt->get(t);
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::KEYDOWN):
case(osgGA::GUIEventAdapter::KEYUP):
{
// iteration
if (ea.getKey() == osgGA::GUIEventAdapter::KEY_F2)
{
unit->setNumIterations(unit->getNumIterations()+1);
}else if (ea.getKey() == osgGA::GUIEventAdapter::KEY_F1)
{
unit->setNumIterations(unit->getNumIterations()-1);
}
// intenisty
if (ea.getKey() == osgGA::GUIEventAdapter::KEY_F3)
{
intensity->set(i-0.1f);
}else if (ea.getKey() == osgGA::GUIEventAdapter::KEY_F4)
{
intensity->set(i+0.1f);
}
// dt
if (ea.getKey() == osgGA::GUIEventAdapter::KEY_F5)
{
dt->set(t-0.001f);
}else if (ea.getKey() == osgGA::GUIEventAdapter::KEY_F6)
{
dt->set(t+0.001f);
}
break;
}
default:
break;
}
return false;
}
void onValueChanged(Control*, float value) {
_u->set( value );
}