Comments (5)
Well, to my knowledge this is a short form of class (function) definition, as described in Modelica Specification 3.4, Section 4.5.1. Thus
class IDENT1 = IDENT2 class-modification;
is identical to
class IDENT1
extends IDENT2 class-modification;
end IDENT1;
from vehicleinterfaces.
Additionally section 7.3.2 (with anything in the Modelica specification you always need to cross-reference multiple sections!!) describes the "constraining-clause", for which the default is the declared type. Therefore for
replaceable function position = VehicleInterfaces.Roads.Interfaces.positionBase
the constraining-clause is VehicleInterfaces.Roads.Interfaces.positionBase
.
A pattern that might be clearer would be to have default implementations of the functions and then explicitly declare the constraining-clause, as follows:
replaceable function position = VehicleInterfaces.Roads.positionDefault constrainedby VehicleInterfaces.Roads.Interfaces.positionBase
This would make checking of the model(s) easier as the declared functions wouldn't be partial.
from vehicleinterfaces.
This would require to define such "dummy" functions in Roads.Interfaces.Base
or somewhere else. But the meaning of that functions would be ... well just a dummy.
from vehicleinterfaces.
Absolutely they would be just a dummy, it's just a question of what is clearer, sometimes it's good to have a dummy implementation to copy. But it's just a case of style.
from vehicleinterfaces.
OK, so question is rather how is a common solution of such an issue. Is there any similar case e.g. in Modelica Standard library?
If we go that way, the functions positionDefault, etc., could be defined for an ideal straight road. Thus, those functions would not necessarilly have to be replaced in a particular road model.
For example, functions circleNormal and circleFrictionCoefficient could be omited in Roads.CircleRoad
.
But it doesn't mean I prefer this solution ;-)
from vehicleinterfaces.
Related Issues (20)
- I have a question. HOT 6
- Add milestones and labels HOT 1
- Replace "fake" enumerations with enumerations in VehicleInterfaces.Types HOT 2
- Error in VehicleInterfaces.Mechanics.NormalisedTranslational.Interfaces.Flange documentation
- Remove uses of __Dymola_choicesFromPackage annotation HOT 2
- Reintroduce the idea of expandable connectors for signal buses HOT 10
- Incorporate FlangeWithBearingAdaptor in models with FlangeWithBearing HOT 1
- Restructure examples in Roads HOT 1
- VehicleInterfaces.Drivers.MinimalDriver cannot be instantiated HOT 8
- Load torque parameter description misleading HOT 1
- MultiBodyEnd purpose HOT 2
- Relicense under BSD 3-clause? HOT 5
- Split library into single files
- Rename includeAccessoriesBearing
- Delete obsolete classes
- Change Greek parameter name 'mue' to 'mu'
- UsersGuide.DriverInteractionBus have misleading engineSpeed and vehicleSpeed descriptions HOT 1
- Hide usingMultiBodyXXX when the corresponding includeXXXBearing is set to true HOT 2
- Layout of road functions in Roads.Interfaces.Base HOT 2
- Units error (or incompatibiity?) in VehicleInterfaces\Engines\MinimalEngine.mo: r/min vs 1/min HOT 3
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from vehicleinterfaces.