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XFORM info  Overview  Group


The XFORM structure specifies a world-space to page-space transformation. 

typedef struct  _XFORM {  // xfrm 

    FLOAT eM11; 

    FLOAT eM12; 

    FLOAT eM21; 

    FLOAT eM22; 

    FLOAT eDx; 

    FLOAT eDy; 

} XFORM; 

 

Members

eM11
Specifies the following:

Operation

Meaning

Scaling

Horizontal scaling component

Rotation

Cosine of rotation angle

Reflection

Horizontal component

eM12
Specifies the following:

Operation

Meaning

Shear

Horizontal proportionality constant

Rotation

Sine of the rotation angle

eM21
Specifies the following:

Operation

Meaning

Shear

Vertical proportionality constant

Rotation

Negative sine of the rotation angle

eM22
Specifies the following:

Operation

Meaning

Scaling

Vertical scaling component

Rotation

Cosine of rotation angle

Reflection

Vertical reflection component

eDx
Specifies the horizontal translation component.
eDy
Specifies the vertical translation component.

Remarks

The following list describes how the members are used for each operation:

Operation

eM11

eM12

eM21

eM22

Rotation

Cosine

Sine

Negative sine

Cosine

Scaling

Horizontal scaling component

Nothing

Nothing

Vertical Scaling Component

Shear

Nothing

Horizontal Proportionality Constant

Vertical Proportionality Constant

Nothing

Reflection

Horizontal Reflection Component

Nothing

Nothing

Vertical Reflection Component

See Also

ExtCreateRegion, GetWorldTransform, ModifyWorldTransform, PlayEnhMetaFile, SetWorldTransform 

 

See also:

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