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ID2D1Geometry::ComputeArea(constD2D1_MATRIX_3X2_F*,FLOAT*) method (d2d1.h)

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Computes the area of the geometry after it has been transformed by the specified matrix and flattened using the specified tolerance.

Syntax

HRESULT ComputeArea(
  const D2D1_MATRIX_3X2_F *worldTransform,
  FLOAT                   *area
);

Parameters

worldTransform

Type: [in, optional] const D2D1_MATRIX_3X2_F*

The transform to apply to this geometry before computing its area, or NULL.

area

Type: [out] FLOAT*

When this this method returns, contains a pointer to the area of the transformed, flattened version of this geometry. You must allocate storage for this parameter.

Return value

Type: HRESULT

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Requirements

Requirement Value
Minimum supported client Windows 7, Windows Vista with SP2 and Platform Update for Windows Vista [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 R2, Windows Server 2008 with SP2 and Platform Update for Windows Server 2008 [desktop apps | UWP apps]
Target Platform Windows
Header d2d1.h
Library D2d1.lib
DLL D2d1.dll

See also

ID2D1Geometry