Matrix3x2F::Scale(D2D1_SIZE_F,D2D1_POINT_2F) method (d2d1helper.h)

Creates a scale transformation that has the specified scale factors and center point.


Matrix3x2F Scale(
  D2D1_SIZE_F   size,
  D2D1_POINT_2F center



Type: D2D1_SIZE_F

The x-axis and y-axis scale factors of the scale transformation.


Type: D2D1_POINT_2F

The point about which the scale is performed.

Return value

Type: Matrix3x2F

The new scale transformation.


This method creates a scale transformation for the specified centerPoint and scale factors. The scale factors are stored as an ordered pair in the D2D1_SIZE_F structure. If you prefer to list each scale factor as a parameter, call the other Scale method.

The following illustration shows the size of the square increased to 130% in each dimension. The center point for the scaling is the upper-left corner of the square.

Illustration of a square scaled by 130% in the x-direction and y-direction

For an example, see How to Scale an Object.


Minimum supported client Windows 7, Windows Vista with SP2 and Platform Update for Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 R2, Windows Server 2008 with SP2 and Platform Update for Windows Server 2008 [desktop apps only]
Target Platform Windows
Header d2d1helper.h
Library D2d1.lib
DLL D2d1.dll

See also