From 37f066c1fc214b64dd7f917d7fc0129020edf2c9 Mon Sep 17 00:00:00 2001
From: Matt Steen <msteen@ambient-e.com>
Date: Sat, 8 Aug 2020 15:21:42 -0600
Subject: [PATCH] add measure for #4

---
 .../measure.rb                                | 90 +++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 measures/envelope_material_property_phase_change/measure.rb

diff --git a/measures/envelope_material_property_phase_change/measure.rb b/measures/envelope_material_property_phase_change/measure.rb
new file mode 100644
index 0000000..f7626d1
--- /dev/null
+++ b/measures/envelope_material_property_phase_change/measure.rb
@@ -0,0 +1,90 @@
+# insert your copyright here
+
+# see the URL below for information on how to write OpenStudio measures
+# http://nrel.github.io/OpenStudio-user-documentation/reference/measure_writing_guide/
+
+# start the measure
+class EnvelopeMaterialPropertyPhaseChange < OpenStudio::Measure::EnergyPlusMeasure
+  # human readable name
+  def name
+    # Measure name should be the title case of the class name.
+    return 'Material Property Phase Change'
+  end
+
+  # human readable description
+  def description
+    return 'Adds a MaterialProperty:PhaseChange object to the model that references the interior layer of the selected Construction.'
+  end
+
+  # human readable description of modeling approach
+  def modeler_description
+    return 'Gets the interior layer name of the selected Construction object from the number of fields and sets the MaterialProperty:PhaseChange Name field to reference it.'
+  end
+
+  # define the arguments that the user will input
+  def arguments(workspace)
+    args = OpenStudio::Measure::OSArgumentVector.new
+
+    # get construction names from workspace for choice argument
+    construction_names = []
+    workspace.getObjectsByType('Construction'.to_IddObjectType).sort.each do |obj|
+      construction_names << obj.getString(0).to_s
+    end
+    
+    # argument for construction name
+    construction_name = OpenStudio::Ruleset::OSArgument::makeChoiceArgument('construction_name', construction_names, true)
+    construction_name.setDisplayName('Construction Name')
+    construction_name.setDescription('Phase Change Material will be added to interior material')
+    args << construction_name
+
+    return args
+  end
+
+  # define what happens when the measure is run
+  def run(workspace, runner, user_arguments)
+    super(workspace, runner, user_arguments)
+
+    # use the built-in error checking
+    if !runner.validateUserArguments(arguments(workspace), user_arguments)
+      return false
+    end
+
+    # assign the user inputs to variables
+    construction_name = runner.getStringArgumentValue('construction_name', user_arguments)
+
+    # reporting initial condition of model
+    objs = workspace.getObjectsByType('MaterialProperty:PhaseChange'.to_IddObjectType)
+    runner.registerInitialCondition("MaterialProperty:PhaseChange objects = #{objs.size}")
+
+    # get objects 
+    construction = workspace.getObjectByTypeAndName('Construction'.to_IddObjectType, construction_name).get
+    construction_num_fields = construction.numFields - 1
+    construction_interior_layer_name = construction.getString(construction_num_fields).to_s
+
+    # add object from ~/EnergyPlus-x-x-x/ExampleFiles/MaterialPropertyPhaseChange.idf 
+    idf_str = "
+      MaterialProperty:PhaseChange,
+        #{construction_interior_layer_name},  !- Name
+        0,                       !- Temperature Coefficient for Thermal Conductivity {W/m-K2}
+        -20,                     !- Temperature 1 {C}
+        0.1,                     !- Enthalpy 1 {J/kg}
+        22,                      !- Temperature 2 {C}
+        18260,                   !- Enthalpy 2 {J/kg}
+        22.1,                    !- Temperature 3 {C}
+        32000,                   !- Enthalpy 3 {J/kg}
+        60,                      !- Temperature 4 {C}
+        71000;                   !- Enthalpy 4 {J/kg}
+      "
+      idf_obj = OpenStudio::IdfObject.load(idf_str).get
+      workspace.addObject(idf_obj)
+
+    # report final condition of model
+    objs = workspace.getObjectsByType('MaterialProperty:PhaseChange'.to_IddObjectType)
+    runner.registerFinalCondition("MaterialProperty:PhaseChange objects = #{objs.size}")
+
+    return true
+  end
+end
+
+# register the measure to be used by the application
+EnvelopeMaterialPropertyPhaseChange.new.registerWithApplication