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MnaParamTree

Namespace: MNALIB  ·  Library: MNA Library

#include <mna/mna_param_tree.h>

class MNALIB::MnaParamTree

Hierarchical parameter store for the MNA graph.

Each parameter has a path ("nodeId/attrKey") and an optional binding — a formula that recomputes the value whenever a trigger condition is met.

Path-keyed parameter store with formula-driven dynamic bindings.

src/examples/ex_mna/main.cpp
graph.paramTree.setParam("shift/offset", 0.5);
MnaParamBinding binding;
binding.targetPath = "scale/gain";
binding.expression = "clamp(ref('source::out') * 2, 0, 5)"; // evaluated against node results
binding.trigger = "on_change";
graph.paramTree.addBinding(binding);

Public Methods​

MnaParamTree()​

setParam(path, value)​

param(path)​

hasParam(path)​

allPaths()​

addBinding(binding)​

removeBinding(targetPath)​

bindings()​

hasBinding(targetPath)​

evaluate(results)​

Evaluate all bindings whose trigger condition is met.

Parameters:

  • results : const QMap< QString, QVariant > & Map of nodeId::portName → data (from execution context).

Returns:

  • QStringList — Paths whose values changed.

evaluateExpression(expr, results)​

Evaluate a single expression in the current context.

Parameters:

  • expr : const QString & Expression string.

  • results : const QMap< QString, QVariant > & Map of nodeId::portName → data (from execution context).

Returns:

  • QVariant — Computed value.

toJson()​

Static Methods​

fromJson(obj)​

Example​

Authors of this file​