Revit API单位转换类

2022-03-24 12:03:15

用法：
txt.Text=UnitConvertC.CovertFromAPI(param.AsDouble());
param.Set(UnitConvertC.CovertToAPI(txt.Text));

Parameter parameter = item.get_Parameter(BuiltInParameter.ROOM_DESIGN_COOLING_LOAD_PARAM);
if (null != parameter)
{
coolingDesign += UnitConvertC.CovertFromAPI(DisplayUnitType.DUT_KILOWATTS, parameter.AsDouble());
}//DUT_KILOWATTS千瓦

start

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Autodesk.Revit.DB;

namespace revit_5d6d_com

{

/// <summary>

/// 单位转换类

/// </summary>

public sealed class UnitConvert

{

#region Methods

/// <summary>

/// Convert the value get from RevitAPI to the value indicated by DisplayUnitType

/// </summary>

/// <param name="to">DisplayUnitType indicates unit of target value</param>

/// <param name="value">value get from RevitAPI</param>

/// <returns>Target value</returns>

public static double CovertFromAPI(DisplayUnitType to, double value)

{

switch (to)

{

case DisplayUnitType.DUT_FAHRENHEIT://华氏

return value * ImperialDutRatio(to) - 459.67;

case DisplayUnitType.DUT_CELSIUS://摄氏

return value - 273.15;

default:

return value *= ImperialDutRatio(to);

}

/// <summary>

/// Convert a value indicated by DisplayUnitType to the value used by RevitAPI

/// </summary>

/// <param name="value">Value to be converted</param>

/// <param name="from">DisplayUnitType indicates the unit of the value to be converted</param>

/// <returns>Target value</returns>

public static double CovertToAPI(double value, DisplayUnitType from)

{

switch (from)

{

case DisplayUnitType.DUT_FAHRENHEIT:

return (value + 459.67) / ImperialDutRatio(from);

case DisplayUnitType.DUT_CELSIUS:

return value + 273.15;

default:

return value /= ImperialDutRatio(from);

}

public static double LengthConverFromAPI(Document document, double dLength)

{

UnitType unitType = UnitType.UT_Length;

ProjectUnit projectUnit = document.ProjectUnit;//项目单位

Autodesk.Revit.DB.FormatOptions formatOption = projectUnit.get_FormatOptions(unitType);

return CovertFromAPI(formatOption.Units, dLength);

}

public static double LengthConverToAPI(Document document, double dLength)

{

UnitType unitType = UnitType.UT_Length;

ProjectUnit projectUnit = document.ProjectUnit;

Autodesk.Revit.DB.FormatOptions formatOption = projectUnit.get_FormatOptions(unitType);

return CovertToAPI(dLength, formatOption.Units);

}

public static double AreaConverFromAPI(Document document, double dArea)

{

UnitType unitType = UnitType.UT_Area;

ProjectUnit projectUnit = document.ProjectUnit;

Autodesk.Revit.DB.FormatOptions formatOption = projectUnit.get_FormatOptions(unitType);

return CovertFromAPI(formatOption.Units, dArea);

}

public static double AreaConverToAPI(Document document, double dArea)

{

UnitType unitType = UnitType.UT_Area;

ProjectUnit projectUnit = document.ProjectUnit;

Autodesk.Revit.DB.FormatOptions formatOption = projectUnit.get_FormatOptions(unitType);

return CovertToAPI(dArea, formatOption.Units);

}

public static double VolumeConverFromAPI(Document document, double dVolume)

{

UnitType unitType = UnitType.UT_Volume;

ProjectUnit projectUnit = document.ProjectUnit;

Autodesk.Revit.DB.FormatOptions formatOption = projectUnit.get_FormatOptions(unitType);

return CovertFromAPI(formatOption.Units, dVolume);

}

public static double AngleConverFromAPI(Document document, double dAngle)

{

UnitType unitType = UnitType.UT_Angle;

ProjectUnit projectUnit = document.ProjectUnit;

Autodesk.Revit.DB.FormatOptions formatOption = projectUnit.get_FormatOptions(unitType);

return CovertFromAPI(formatOption.Units, dAngle);

}

/// <summary>

/// 保留两位小数

/// </summary>

/// <param name="offset"></param>

/// <returns></returns>

public static string GetString(string offset)

{

decimal val = decimal.Parse(offset);

return val.ToString("0.00");

}

/// <summary>

/// Unit Show String

/// </summary>

/// <param name="dut"></param>

/// <returns></returns>

public static string GetUnitString(DisplayUnitType dut)

{

string s = dut.ToString();

switch (dut)

{

case DisplayUnitType.DUT_CELSIUS: return "C";

case DisplayUnitType.DUT_METERS: return "Meters";

case DisplayUnitType.DUT_ACRES: return "Acres";

case DisplayUnitType.DUT_AMPERES: return "Amperes";

case DisplayUnitType.DUT_ATMOSPHERES: return "atmospheres";

case DisplayUnitType.DUT_BARS: return "Bars";

case DisplayUnitType.DUT_BRITISH_THERMAL_UNITS: return "BritishThermalUnits";

case DisplayUnitType.DUT_BRITISH_THERMAL_UNITS_PER_HOUR: return "BritishThermalUnitsPerHour";

case DisplayUnitType.DUT_BRITISH_THERMAL_UNITS_PER_SECOND: return "BritishThermalUnitsPerSecond";

case DisplayUnitType.DUT_CALORIES: return "Calories";

case DisplayUnitType.DUT_CALORIES_PER_SECOND: return "CaloriesPerSecond";

case DisplayUnitType.DUT_CANDELAS: return "Candelas";

case DisplayUnitType.DUT_CANDELAS_PER_SQUARE_METER: return "CandelasPerSquareMeter";

case DisplayUnitType.DUT_CANDLEPOWER: return "Candlepower";

case DisplayUnitType.DUT_CENTIMETERS: return "Centimeter";

case DisplayUnitType.DUT_CENTIMETERS_PER_MINUTE: return "CentimetersPerMinute";

case DisplayUnitType.DUT_CENTIPOISES: return "Centipoises";

case DisplayUnitType.DUT_CUBIC_CENTIMETERS: return "CubicCentimeters";

case DisplayUnitType.DUT_CUBIC_FEET: return "CubicFeet";

case DisplayUnitType.DUT_CUBIC_FEET_PER_KIP: return "CubicFeetPerKip";

case DisplayUnitType.DUT_CUBIC_FEET_PER_MINUTE: return "CubicFeetPerMinute";

case DisplayUnitType.DUT_CUBIC_INCHES: return "CubicInches";

case DisplayUnitType.DUT_CUBIC_METERS: return "CubicMeters";

case DisplayUnitType.DUT_CUBIC_METERS_PER_HOUR: return "CubicMetersPerHour";

case DisplayUnitType.DUT_CUBIC_METERS_PER_KILONEWTON: return "CubicMetersPerKilonewton";

case DisplayUnitType.DUT_CUBIC_METERS_PER_SECOND: return "CubicMetersPerSecond";

case DisplayUnitType.DUT_CUBIC_MILLIMETERS: return "CubicMillimeters";

case DisplayUnitType.DUT_CUBIC_YARDS: return "CubicYards";

case DisplayUnitType.DUT_CYCLES_PER_SECOND: return "CyclesPerSecond";

case DisplayUnitType.DUT_DECANEWTONS: return "Decanewtons";

case DisplayUnitType.DUT_DECANEWTONS_PER_METER: return "DecaNewtonsPerMeter";

case DisplayUnitType.DUT_DECANEWTONS_PER_SQUARE_METER: return "DecaNewtonsPerSqareMeter";

case DisplayUnitType.DUT_DECANEWTON_METERS: return " DecaNewtonMeters";

case DisplayUnitType.DUT_DECANEWTON_METERS_PER_METER: return " DecaNewtonMetersPerMeter";

case DisplayUnitType.DUT_DECIMAL_DEGREES: return "DecimalDegrees";

case DisplayUnitType.DUT_DECIMAL_FEET: return "DecimalFeet";

case DisplayUnitType.DUT_DECIMAL_INCHES: return "DecimalInches";

case DisplayUnitType.DUT_DEGREES_AND_MINUTES: return "DegreesAndMinutes";

case DisplayUnitType.DUT_FAHRENHEIT: return "Fahrenheit";

case DisplayUnitType.DUT_FEET_FRACTIONAL_INCHES: return "FeetFractionalInches";

case DisplayUnitType.DUT_FEET_OF_WATER: return "FeetOfWater";

case DisplayUnitType.DUT_FEET_OF_WATER_PER_100FT: return "FeetOfWaterPer100ft";

case DisplayUnitType.DUT_FEET_PER_KIP: return "FeetPerKip";

case DisplayUnitType.DUT_FEET_PER_MINUTE: return "FeetPerMinute";

case DisplayUnitType.DUT_FEET_PER_SECOND: return "FeetPerSecond";

case DisplayUnitType.DUT_FIXED: return "Fixed";

case DisplayUnitType.DUT_FOOTCANDLES: return "Footcandles";

case DisplayUnitType.DUT_FOOTLAMBERTS: return "Footlamberts";

case DisplayUnitType.DUT_FRACTIONAL_INCHES: return "FractionalInches";

case DisplayUnitType.DUT_GALLONS_US: return "GallonsUs";

case DisplayUnitType.DUT_GALLONS_US_PER_HOUR: return "GallonsUsPerHour";

case DisplayUnitType.DUT_GALLONS_US_PER_MINUTE: return "GallonsUsPerMinute";

case DisplayUnitType.DUT_GENERAL: return "General"; ;

case DisplayUnitType.DUT_HECTARES: return "Hectares";

case DisplayUnitType.DUT_HERTZ: return "Hertz";

case DisplayUnitType.DUT_HORSEPOWER: return "Horsepower";

case DisplayUnitType.DUT_INCHES_OF_MERCURY: return "InchesOfMercury";

case DisplayUnitType.DUT_INCHES_OF_WATER: return "InchesOfWater";

case DisplayUnitType.DUT_INCHES_OF_WATER_PER_100FT: return "InchesOfWaterPer100ft";

case DisplayUnitType.DUT_INV_CELSIUS: return "InvCelsius";

case DisplayUnitType.DUT_INV_FAHRENHEIT: return "InvFahrenheit";

case DisplayUnitType.DUT_INV_KILONEWTONS: return "InvKilonewtons";

case DisplayUnitType.DUT_INV_KIPS: return "InvKips";

case DisplayUnitType.DUT_JOULES: return "Joules";

case DisplayUnitType.DUT_KELVIN: return "Kelvin";

case DisplayUnitType.DUT_KILOAMPERES: return "Kiloamperes";

case DisplayUnitType.DUT_KILOCALORIES: return "Kilocalories";

case DisplayUnitType.DUT_KILOCALORIES_PER_SECOND: return "KilocaloriesPerSecond";

case DisplayUnitType.DUT_KILOGRAMS_FORCE: return "KilogramsForce";

case DisplayUnitType.DUT_KILOGRAMS_FORCE_PER_METER: return "KilogramsForcePerMeter";

case DisplayUnitType.DUT_KILOGRAMS_FORCE_PER_SQUARE_METER: return "KilogramsForcePerSqareMeter";

case DisplayUnitType.DUT_KILOGRAMS_PER_CUBIC_METER: return "KilogramsPerCubicMeter";

case DisplayUnitType.DUT_KILOGRAM_FORCE_METERS: return "KilogramForceMeters";

case DisplayUnitType.DUT_KILOGRAM_FORCE_METERS_PER_METER: return "KilogramForceMetersPerMeter";

case DisplayUnitType.DUT_KILONEWTONS: return "Kilonewtons";

case DisplayUnitType.DUT_KILONEWTONS_PER_CUBIC_METER: return "KilonewtonsPerCubicMeter";

case DisplayUnitType.DUT_KILONEWTONS_PER_METER: return "KilonewtonsPerMeter";

case DisplayUnitType.DUT_KILONEWTONS_PER_SQUARE_METER: return "KilonewtonsPerSqareMeter";

case DisplayUnitType.DUT_KILONEWTON_METERS: return "KilonewtonMeters";

case DisplayUnitType.DUT_KILONEWTON_METERS_PER_DEGREE: return "KilonewtonMetersPerDegree";

case DisplayUnitType.DUT_KILONEWTON_METERS_PER_DEGREE_PER_METER: return "KilonewtonMetersPerDegreepermeter";

case DisplayUnitType.DUT_KILONEWTON_METERS_PER_METER: return "KilonewtonMetersPerMeter";

case DisplayUnitType.DUT_KILOPASCALS: return "Kilopascals";

case DisplayUnitType.DUT_KILOVOLTS: return "Kilovolts";

case DisplayUnitType.DUT_KILOVOLT_AMPERES: return "KilovoltAmperes";

case DisplayUnitType.DUT_KILOWATTS: return "Kilowatts";

case DisplayUnitType.DUT_KILOWATT_HOURS: return "KilowattHours";

case DisplayUnitType.DUT_KIPS: return "Kips";

case DisplayUnitType.DUT_KIPS_PER_CUBIC_FOOT: return "KipsPerCubicFoot";

case DisplayUnitType.DUT_KIPS_PER_CUBIC_INCH: return "KipsPerCubicInch";

case DisplayUnitType.DUT_KIPS_PER_FOOT: return "KipsPerFoot";

case DisplayUnitType.DUT_KIPS_PER_INCH: return "KipsPerInch";

case DisplayUnitType.DUT_KIPS_PER_SQUARE_FOOT: return "KipsPerSquareFoot";

case DisplayUnitType.DUT_KIPS_PER_SQUARE_INCH: return "KipsPerSquareInch";

case DisplayUnitType.DUT_KIP_FEET: return "KipFeet";

case DisplayUnitType.DUT_KIP_FEET_PER_DEGREE: return "KipFeetPerDegree";

case DisplayUnitType.DUT_KIP_FEET_PER_DEGREE_PER_FOOT: return "KipFeetPerDegreePerFoot";

case DisplayUnitType.DUT_KIP_FEET_PER_FOOT: return "KipFeetPerFoot";

case DisplayUnitType.DUT_LITERS: return "Liters";

case DisplayUnitType.DUT_LITERS_PER_SECOND: return "LitersPerSecond";

case DisplayUnitType.DUT_LUMENS: return "Lumens";

case DisplayUnitType.DUT_LUX: return "Lux";

case DisplayUnitType.DUT_MEGANEWTONS: return "Meganewtons";

case DisplayUnitType.DUT_MEGANEWTONS_PER_METER: return "MeganewtonsPerMeter";

case DisplayUnitType.DUT_MEGANEWTONS_PER_SQUARE_METER: return "MeganewtonsPerSqareMeter";

case DisplayUnitType.DUT_MEGANEWTON_METERS: return "MeganewtonMeters";

case DisplayUnitType.DUT_MEGANEWTON_METERS_PER_METER: return "MeganewtonMetersPerMeter";

case DisplayUnitType.DUT_MEGAPASCALS: return "Megapascals";

case DisplayUnitType.DUT_METERS_CENTIMETERS: return "MetersCentimeters";

case DisplayUnitType.DUT_METERS_PER_KILONEWTON: return "MetersPerKilonewton";

case DisplayUnitType.DUT_METERS_PER_SECOND: return "MetersPerSecond";

case DisplayUnitType.DUT_MILLIAMPERES: return "Milliamperes";

case DisplayUnitType.DUT_MILLIMETERS: return "Millimeters";

case DisplayUnitType.DUT_MILLIMETERS_OF_MERCURY: return "MillimetersOfMercury";

case DisplayUnitType.DUT_MILLIVOLTS: return "Millivolts";

case DisplayUnitType.DUT_NEWTONS: return "Newtons";

case DisplayUnitType.DUT_NEWTONS_PER_METER: return "NewtonsPerMeter";

case DisplayUnitType.DUT_NEWTONS_PER_SQUARE_METER: return "NewtonsPerSqareMeter";

case DisplayUnitType.DUT_NEWTON_METERS: return "NewtonMeters";

case DisplayUnitType.DUT_NEWTON_METERS_PER_METER: return "NewtonMetersPerMeter";

case DisplayUnitType.DUT_PASCALS: return "Pascals";

case DisplayUnitType.DUT_PASCALS_PER_METER: return "PascalsPerMeter";

case DisplayUnitType.DUT_PASCAL_SECONDS: return "PascalSeconds";

case DisplayUnitType.DUT_PERCENTAGE: return "Percentage";

case DisplayUnitType.DUT_POUNDS_FORCE: return "PoundsForce";

case DisplayUnitType.DUT_POUNDS_FORCE_PER_CUBIC_FOOT: return "PoundsForcePerCubicFoot";

case DisplayUnitType.DUT_POUNDS_FORCE_PER_FOOT: return "PoundsForcePerFooT";

case DisplayUnitType.DUT_POUNDS_FORCE_PER_SQUARE_FOOT: return "PoundsForcePerSquareFoot";

case DisplayUnitType.DUT_POUNDS_FORCE_PER_SQUARE_INCH: return "PoundsForcePerSquareInch";

case DisplayUnitType.DUT_POUNDS_MASS_PER_CUBIC_FOOT: return "PoundsMassPerCubicFoot";

case DisplayUnitType.DUT_POUNDS_MASS_PER_CUBIC_INCH: return "PoundsMassPerCubicInch";

case DisplayUnitType.DUT_POUNDS_MASS_PER_FOOT_HOUR: return "PoundsMassPerFootHour";

case DisplayUnitType.DUT_POUNDS_MASS_PER_FOOT_SECOND: return "PoundsMassPerFootSecond";

case DisplayUnitType.DUT_POUND_FORCE_FEET: return "PoundForceFeet";

case DisplayUnitType.DUT_POUND_FORCE_FEET_PER_FOOT: return "PoundForceFeetPerFoot";

case DisplayUnitType.DUT_RANKINE: return "Rankine";

case DisplayUnitType.DUT_SQUARE_CENTIMETERS: return "SquareCentimeters";

case DisplayUnitType.DUT_SQUARE_FEET: return "SquareFeet";

case DisplayUnitType.DUT_SQUARE_FEET_PER_KIP: return "SquareFeetPerKip";

case DisplayUnitType.DUT_SQUARE_INCHES: return "SquareInches";

case DisplayUnitType.DUT_SQUARE_METERS: return "SquareMeterS";

case DisplayUnitType.DUT_SQUARE_METERS_PER_KILONEWTON: return "SqareMetersPerKilonewton";

case DisplayUnitType.DUT_SQUARE_MILLIMETERS: return "SquareMillimeters";

case DisplayUnitType.DUT_THERMS: return "Therms";

case DisplayUnitType.DUT_TONNES_FORCE: return "TonnesForce";

case DisplayUnitType.DUT_TONNES_FORCE_PER_METER: return "TonnesForcePerMeter";

case DisplayUnitType.DUT_TONNES_FORCE_PER_SQUARE_METER: return "TonnesForcePerSqareMeter";

case DisplayUnitType.DUT_TONNE_FORCE_METERS: return "TonneForceMeters";

case DisplayUnitType.DUT_TONNE_FORCE_METERS_PER_METER: return "TonneForceMetersPerMeter";

case DisplayUnitType.DUT_VOLTS: return "Volts";

case DisplayUnitType.DUT_VOLT_AMPERES: return "VoltAmperes";

case DisplayUnitType.DUT_WATTS: return "Watts";

case DisplayUnitType.DUT_WATTS_PER_SQUARE_FOOT: return "WattsPerSquareFoot";

case DisplayUnitType.DUT_WATTS_PER_SQUARE_METER: return "WattsPerSqareMeter";

default: return "";

}

/// <summary>

/// Get ratio between value in RevitAPI and value to display indicated by DisplayUnitType

/// </summary>

/// <param name="dut">

/// DisplayUnitType indicates display unit type

/// </param>

/// <returns>

/// Ratio

/// </returns>

private static double ImperialDutRatio(DisplayUnitType dut)

{

switch (dut)

{

case DisplayUnitType.DUT_ACRES: return 2.29568411386593E-05;

case DisplayUnitType.DUT_AMPERES: return 1;

case DisplayUnitType.DUT_ATMOSPHERES: return 3.23793722675857E-05;

case DisplayUnitType.DUT_BARS: return 3.28083989501312E-05;

case DisplayUnitType.DUT_BRITISH_THERMAL_UNITS: return 8.80550918411529E-05;

case DisplayUnitType.DUT_BRITISH_THERMAL_UNITS_PER_HOUR: return 0.316998330628151;

case DisplayUnitType.DUT_BRITISH_THERMAL_UNITS_PER_SECOND: return 8.80550918411529E-05;

case DisplayUnitType.DUT_CALORIES: return 0.0221895098882201;

case DisplayUnitType.DUT_CALORIES_PER_SECOND: return 0.0221895098882201;

case DisplayUnitType.DUT_CANDELAS: return 1;

case DisplayUnitType.DUT_CANDELAS_PER_SQUARE_METER: return 10.7639104167097;

case DisplayUnitType.DUT_CANDLEPOWER: return 1;

case DisplayUnitType.DUT_CELSIUS: return 1;

case DisplayUnitType.DUT_CENTIMETERS: return 30.48;

case DisplayUnitType.DUT_CENTIMETERS_PER_MINUTE: return 1828.8;

case DisplayUnitType.DUT_CENTIPOISES: return 3280.83989501312;

case DisplayUnitType.DUT_CUBIC_CENTIMETERS: return 28316.846592;

case DisplayUnitType.DUT_CUBIC_FEET: return 1;

case DisplayUnitType.DUT_CUBIC_FEET_PER_KIP: return 14593.9029372064;

case DisplayUnitType.DUT_CUBIC_FEET_PER_MINUTE: return 60;

case DisplayUnitType.DUT_CUBIC_INCHES: return 1728;

case DisplayUnitType.DUT_CUBIC_METERS: return 0.028316846592;

case DisplayUnitType.DUT_CUBIC_METERS_PER_HOUR: return 101.9406477312;

case DisplayUnitType.DUT_CUBIC_METERS_PER_KILONEWTON: return 92.90304;

case DisplayUnitType.DUT_CUBIC_METERS_PER_SECOND: return 0.028316846592;

case DisplayUnitType.DUT_CUBIC_MILLIMETERS: return 28316846.592;

case DisplayUnitType.DUT_CUBIC_YARDS: return 0.037037037037037;

case DisplayUnitType.DUT_CYCLES_PER_SECOND: return 1;

case DisplayUnitType.DUT_DECANEWTONS: return 0.03048;

case DisplayUnitType.DUT_DECANEWTONS_PER_METER: return 0.1;

case DisplayUnitType.DUT_DECANEWTONS_PER_SQUARE_METER: return 0.328083989501312;

case DisplayUnitType.DUT_DECANEWTON_METERS: return 0.009290304;

case DisplayUnitType.DUT_DECANEWTON_METERS_PER_METER: return 0.03048;

case DisplayUnitType.DUT_DECIMAL_DEGREES: return 57.2957795130823;

case DisplayUnitType.DUT_DECIMAL_FEET: return 1;

case DisplayUnitType.DUT_DECIMAL_INCHES: return 12;

case DisplayUnitType.DUT_DEGREES_AND_MINUTES: return 57.2957795130823;

case DisplayUnitType.DUT_FAHRENHEIT: return 1.8;

case DisplayUnitType.DUT_FEET_FRACTIONAL_INCHES: return 1;

case DisplayUnitType.DUT_FEET_OF_WATER: return 0.00109764531546318;

case DisplayUnitType.DUT_FEET_OF_WATER_PER_100FT: return 0.109761336731934;

case DisplayUnitType.DUT_FEET_PER_KIP: return 14593.9029372064;

case DisplayUnitType.DUT_FEET_PER_MINUTE: return 60;

case DisplayUnitType.DUT_FEET_PER_SECOND: return 1;

case DisplayUnitType.DUT_FIXED: return 1;

case DisplayUnitType.DUT_FOOTCANDLES: return 1.0000000387136;

case DisplayUnitType.DUT_FOOTLAMBERTS: return 3.1415927449471;

case DisplayUnitType.DUT_FRACTIONAL_INCHES: return 12;

case DisplayUnitType.DUT_GALLONS_US: return 7.48051905367236;

case DisplayUnitType.DUT_GALLONS_US_PER_HOUR: return 26929.8685932205;

case DisplayUnitType.DUT_GALLONS_US_PER_MINUTE: return 448.831143220342;

case DisplayUnitType.DUT_GENERAL: return 1;

case DisplayUnitType.DUT_HECTARES: return 9.290304E-06;

case DisplayUnitType.DUT_HERTZ: return 1;

case DisplayUnitType.DUT_HORSEPOWER: return 0.00012458502883053;

case DisplayUnitType.DUT_INCHES_OF_MERCURY: return 0.000968831370233344;

case DisplayUnitType.DUT_INCHES_OF_WATER: return 0.0131845358262865;

case DisplayUnitType.DUT_INCHES_OF_WATER_PER_100FT: return 1.31845358262865;

case DisplayUnitType.DUT_INV_CELSIUS: return 1;

case DisplayUnitType.DUT_INV_FAHRENHEIT: return 0.555555555555556;

case DisplayUnitType.DUT_INV_KILONEWTONS: return 3280.83989501312;

case DisplayUnitType.DUT_INV_KIPS: return 14593.9029372064;

case DisplayUnitType.DUT_JOULES: return 0.09290304;

case DisplayUnitType.DUT_KELVIN: return 1;

case DisplayUnitType.DUT_KILOAMPERES: return 0.001;

case DisplayUnitType.DUT_KILOCALORIES: return 2.21895098882201E-05;

case DisplayUnitType.DUT_KILOCALORIES_PER_SECOND: return 2.21895098882201E-05;

case DisplayUnitType.DUT_KILOGRAMS_FORCE: return 0.0310810655372411;

case DisplayUnitType.DUT_KILOGRAMS_FORCE_PER_METER: return 0.101971999794098;

case DisplayUnitType.DUT_KILOGRAMS_FORCE_PER_SQUARE_METER: return 0.334553805098747;

case DisplayUnitType.DUT_KILOGRAMS_PER_CUBIC_METER: return 35.3146667214886;

case DisplayUnitType.DUT_KILOGRAM_FORCE_METERS: return 0.00947350877575109;

case DisplayUnitType.DUT_KILOGRAM_FORCE_METERS_PER_METER: return 0.0310810655372411;

case DisplayUnitType.DUT_KILONEWTONS: return 0.0003048;

case DisplayUnitType.DUT_KILONEWTONS_PER_CUBIC_METER: return 0.0107639104167097;

case DisplayUnitType.DUT_KILONEWTONS_PER_METER: return 0.001;

case DisplayUnitType.DUT_KILONEWTONS_PER_SQUARE_METER: return 0.00328083989501312;

case DisplayUnitType.DUT_KILONEWTON_METERS: return 9.290304E-05;

case DisplayUnitType.DUT_KILONEWTON_METERS_PER_DEGREE: return 9.290304E-05;

case DisplayUnitType.DUT_KILONEWTON_METERS_PER_DEGREE_PER_METER: return 0.0003048;

case DisplayUnitType.DUT_KILONEWTON_METERS_PER_METER: return 0.0003048;

case DisplayUnitType.DUT_KILOPASCALS: return 0.00328083989501312;

case DisplayUnitType.DUT_KILOVOLTS: return 9.290304E-05;

case DisplayUnitType.DUT_KILOVOLT_AMPERES: return 9.290304E-05;

case DisplayUnitType.DUT_KILOWATTS: return 9.290304E-05;

case DisplayUnitType.DUT_KILOWATT_HOURS: return 2.58064E-08;

case DisplayUnitType.DUT_KIPS: return 0.224808943099711;

case DisplayUnitType.DUT_KIPS_PER_CUBIC_FOOT: return 6.85217658567918E-05;

case DisplayUnitType.DUT_KIPS_PER_CUBIC_INCH: return 3.96537996856434E-08;

case DisplayUnitType.DUT_KIPS_PER_FOOT: return 6.85217658567918E-05;

case DisplayUnitType.DUT_KIPS_PER_INCH: return 5.71014715473265E-06;

case DisplayUnitType.DUT_KIPS_PER_SQUARE_FOOT: return 6.85217658567918E-05;

case DisplayUnitType.DUT_KIPS_PER_SQUARE_INCH: return 4.75845596227721E-07;

case DisplayUnitType.DUT_KIP_FEET: return 6.85217658567918E-05;

case DisplayUnitType.DUT_KIP_FEET_PER_DEGREE: return 2.08854342331501E-05;

case DisplayUnitType.DUT_KIP_FEET_PER_DEGREE_PER_FOOT: return 2.08854342331501E-05;

case DisplayUnitType.DUT_KIP_FEET_PER_FOOT: return 6.85217658567918E-05;

case DisplayUnitType.DUT_LITERS: return 28.316846592;

case DisplayUnitType.DUT_LITERS_PER_SECOND: return 28.316846592;

case DisplayUnitType.DUT_LUMENS: return 1;

case DisplayUnitType.DUT_LUX: return 10.7639104167097;

case DisplayUnitType.DUT_MEGANEWTONS: return 3.048E-07;

case DisplayUnitType.DUT_MEGANEWTONS_PER_METER: return 1E-06;

case DisplayUnitType.DUT_MEGANEWTONS_PER_SQUARE_METER: return 3.28083989501312E-06;

case DisplayUnitType.DUT_MEGANEWTON_METERS: return 9.290304E-08;

case DisplayUnitType.DUT_MEGANEWTON_METERS_PER_METER: return 3.048E-07;

case DisplayUnitType.DUT_MEGAPASCALS: return 3.28083989501312E-06;

case DisplayUnitType.DUT_METERS: return 0.3048;

case DisplayUnitType.DUT_METERS_CENTIMETERS: return 0.3048;

case DisplayUnitType.DUT_METERS_PER_KILONEWTON: return 1000;

case DisplayUnitType.DUT_METERS_PER_SECOND: return 0.3048;

case DisplayUnitType.DUT_MILLIAMPERES: return 1000;

case DisplayUnitType.DUT_MILLIMETERS: return 304.8;

case DisplayUnitType.DUT_MILLIMETERS_OF_MERCURY: return 0.0246083170946002;

case DisplayUnitType.DUT_MILLIVOLTS: return 92.90304;

case DisplayUnitType.DUT_NEWTONS: return 0.3048;

case DisplayUnitType.DUT_NEWTONS_PER_METER: return 1;

case DisplayUnitType.DUT_NEWTONS_PER_SQUARE_METER: return 3.28083989501312;

case DisplayUnitType.DUT_NEWTON_METERS: return 0.09290304;

case DisplayUnitType.DUT_NEWTON_METERS_PER_METER: return 0.3048;

case DisplayUnitType.DUT_PASCALS: return 3.28083989501312;

case DisplayUnitType.DUT_PASCALS_PER_METER: return 10.7639104167097;

case DisplayUnitType.DUT_PASCAL_SECONDS: return 3.28083989501312;

case DisplayUnitType.DUT_PERCENTAGE: return 100;

case DisplayUnitType.DUT_POUNDS_FORCE: return 224.80894309971;

case DisplayUnitType.DUT_POUNDS_FORCE_PER_CUBIC_FOOT: return 0.0685217658567918;

case DisplayUnitType.DUT_POUNDS_FORCE_PER_FOOT: return 0.0685217658567918;

case DisplayUnitType.DUT_POUNDS_FORCE_PER_SQUARE_FOOT: return 0.0685217658567917;

case DisplayUnitType.DUT_POUNDS_FORCE_PER_SQUARE_INCH: return 0.000475845616460903;

case DisplayUnitType.DUT_POUNDS_MASS_PER_CUBIC_FOOT: return 2.20462262184878;

case DisplayUnitType.DUT_POUNDS_MASS_PER_CUBIC_INCH: return 0.00127582327653286;

case DisplayUnitType.DUT_POUNDS_MASS_PER_FOOT_HOUR: return 7936.64143865559;

case DisplayUnitType.DUT_POUNDS_MASS_PER_FOOT_SECOND: return 2.20462262184878;

case DisplayUnitType.DUT_POUND_FORCE_FEET: return 0.0685217658567918;

case DisplayUnitType.DUT_POUND_FORCE_FEET_PER_FOOT: return 0.0685217658567918;

case DisplayUnitType.DUT_RANKINE: return 1.8;

case DisplayUnitType.DUT_SQUARE_CENTIMETERS: return 929.0304;

case DisplayUnitType.DUT_SQUARE_FEET: return 1;

case DisplayUnitType.DUT_SQUARE_FEET_PER_KIP: return 14593.9029372064;

case DisplayUnitType.DUT_SQUARE_INCHES: return 144;

case DisplayUnitType.DUT_SQUARE_METERS: return 0.09290304;

case DisplayUnitType.DUT_SQUARE_METERS_PER_KILONEWTON: return 304.8;

case DisplayUnitType.DUT_SQUARE_MILLIMETERS: return 92903.04;

case DisplayUnitType.DUT_THERMS: return 8.80547457016663E-10;

case DisplayUnitType.DUT_TONNES_FORCE: return 3.10810655372411E-05;

case DisplayUnitType.DUT_TONNES_FORCE_PER_METER: return 0.000101971999794098;

case DisplayUnitType.DUT_TONNES_FORCE_PER_SQUARE_METER: return 0.000334553805098747;

case DisplayUnitType.DUT_TONNE_FORCE_METERS: return 9.47350877575109E-06;

case DisplayUnitType.DUT_TONNE_FORCE_METERS_PER_METER: return 3.10810655372411E-05;

case DisplayUnitType.DUT_VOLTS: return 0.09290304;

case DisplayUnitType.DUT_VOLT_AMPERES: return 0.09290304;

case DisplayUnitType.DUT_WATTS: return 0.09290304;

case DisplayUnitType.DUT_WATTS_PER_SQUARE_FOOT: return 0.09290304;

case DisplayUnitType.DUT_WATTS_PER_SQUARE_METER: return 1;

default: return 1;

}

#endregion

}

url:http://greatverve.cnblogs.com/p/revit-api-UnitConvert.html

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