EDOBE XDOM TAKE 6 IR - PRODUCTSHEET Especificaciones descargar pdf (Pagina 231)

CHAPTER 8: ExtendScript Tools and Features Specifying measurement values 231

For example, all the following formats are equivalent:

myVal = new UnitValue (12, "cm");

myVal = new UnitValue ("12 cm");

myVal = UnitValue ("12 centimeters");

UnitValue object properties

UnitValue object functions

Converting pixel and percentage values

Converting measurements among different units requires a common base unit. For example, for length,

the meter is the base unit. All length units can be converted into meters, which makes it possible to

convert any length unit into any other length unit.

Pixels and percentages do not have a standard common base unit. Pixel measurements are relative to

display resolution, and percentages are relative to an absolute total size.

X To convert pixels into length units, you must know the size of a single pixel. The size of a pixel depends

on the display resolution. A common resolution measurement is 72 dpi, which means that there are 72

pixels to the inch. The conversion base for pixels at 72 dpi is 0.013889 inches (1/72 inch).

baseUnit

UnitValue A UnitValue object that defines the size of one pixel, or a total size to use as a

base for percentage values. This is used as the base conversion unit for pixels

and percentages; see Converting pixel and percentage values

Default is 0.013889 inches (1/72 in), which is the base conversion unit for

pixels at 72 dpi. Set to

null to restore the default.

type

String The unit type in abbreviated form; for example, “cm” or “in”.

value

Number The numeric measurement value.

as()

unitValueObj.as (unit)

unit

The unit type in abbreviated form; for example, “cm” or “in”.

Returns the numeric value of this object in the given unit. If the unit is unknown or cannot be

computed, generates a run-time error.

convert()

unitValueObj.convert (unit)

unit

The unit type in abbreviated form; for example, “cm” or “in”.

Converts this object to the given unit, resetting the

type and value accordingly.

Returns true if the conversion is successful. If the unit is unknown or the object cannot be

converted, generates a run-time error and returns false.

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EDOBE XDOM TAKE 6 IR - PRODUCTSHEET Especificaciones Pagina 231