Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The example EMSThermocromicWindow.idf seems the best starting point. It constains 19 different switchable window states, that are controlled via "EnergyManagementSystem:ConstructionIndexVariable". You would need to transform the control strategy in "EnergyManagementSystem:Program" into something that meets your requirements, i.e. likely not based on window pane temperature.
You may want to take a look at our recent article: "Review of current status, requirements and opportunities for building performance simulation of adaptive facades", for additional considerations. http://dx.doi.org/10.1080/19401493.2016.1152303
