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2.3.9 Transform Record Types

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The Transform Record Types specify properties and transforms on coordinate spaces. The following are EMF+ transform record types:

Name

Section

Description

EmfPlusMultiplyWorldTransform

2.3.9.1

Multiplies the current world space transform by a specified transform matrix.

EmfPlusResetWorldTransform

2.3.9.2

Resets the current world space transform to the identify matrix.

EmfPlusRotateWorldTransform

2.3.9.3

Performs a rotation on the current world space transform.

EmfPlusScaleWorldTransform

2.3.9.4

Performs a scaling on the current world space transform.

EmfPlusSetPageTransform

2.3.9.5

Specifies scaling factors and units for converting page space coordinates to device space coordinates.

EmfPlusSetWorldTransform

2.3.9.6

Specifies the current world space transform according to the values in a specified transform matrix.

EmfPlusTranslateWorldTransform

2.3.9.7

Performs a translation on the current world space transform.

The generic structure of EMF+ transform records is specified as follows:


0


1


2


3


4


5


6


7


8


9

1
0


1


2


3


4


5


6


7


8


9

2
0


1


2


3


4


5


6


7


8


9

3
0


1

Type

Flags

Size

DataSize

RecordData (variable)

...

Type (2 bytes): An unsigned integer that identifies the record type. The transform record types are listed below. See the table above for descriptions of these records.

Name

Value

EmfPlusSetWorldTransform

0x402A

EmfPlusResetWorldTransform

0x402B

EmfPlusMultiplyWorldTransform

0x402C

EmfPlusTranslateWorldTransform

0x402D

EmfPlusScaleWorldTransform

0x402E

EmfPlusRotateWorldTransform

0x402F

EmfPlusSetPageTransform

0x4030

Flags (2 bytes): An unsigned integer that contains information for some records on how the operation is to be performed and on the structure of the record.

Size (4 bytes): An unsigned integer that defines the 32-bit-aligned size of the entire record in bytes, including the 12-byte record header and the record-specific data.

DataSize (4 bytes): An unsigned integer that defines the 32-bit-aligned number of bytes of data in the RecordData field that follows. This number does not include the 12-byte record header.

RecordData (variable): An optional, variable-length array of bytes that, if present, defines the data specific to individual records. For specifications of the additional information, if any, which is contained within this field, see individual record definitions.