Inheritance

A major advantage with object-orientation is the ability to extend the bahavior and properties of an existing class. The original class (base class or superclass), is extended to create a more specialized version (subclass). By doing this the field declarations, equations and other contents are inherited by the subclass, and can be reused.

1 ColorData

This is an example of extending a simple Modelica class, ColorData. Color inherits the data fields (red, blue and green) from ColorData.

type MyReal = Real;
record ColorData // Superclass of Color parameter Real red; parameter Real blue; Real green; end ColorData;
class Color // Subclass of ColorData extends ColorData; // Inherits from ColorData equation red + blue + green = 1; end Color;
class Point public Real x; Real y, z; end Point;

The class ColoredPoint inherits from multiple classes, both Point and Color.

class ColoredPoint extends Point; extends Color; end ColoredPoint;

2 Flattening of Color

Make a call to flatten the class Color.

instantiateModel(Color)