ID2D1Geometry::CompareWithGeometry(ID2D1Geometry*,constD2D1_MATRIX_3X2_F*,FLOAT,D2D1_GEOMETRY_RELATION*) method (d2d1.h)
Describes the intersection between this geometry and the specified geometry. The comparison is performed by using the specified flattening tolerance.
Syntax
HRESULT CompareWithGeometry(
ID2D1Geometry *inputGeometry,
const D2D1_MATRIX_3X2_F *inputGeometryTransform,
FLOAT flatteningTolerance,
D2D1_GEOMETRY_RELATION *relation
);
Parameters
inputGeometry
Type: [in] ID2D1Geometry*
The geometry to test.
inputGeometryTransform
Type: [in, optional] const D2D1_MATRIX_3X2_F*
The transform to apply to inputGeometry, or NULL.
flatteningTolerance
Type: [in] FLOAT
The maximum error allowed when constructing a polygonal approximation of the geometry. No point in the polygonal representation will diverge from the original geometry by more than the flattening tolerance. Smaller values produce more accurate results but cause slower execution.
relation
Type: [out] D2D1_GEOMETRY_RELATION*
When this method returns, contains a pointer to a value that describes how this geometry is related to inputGeometry. 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.
Remarks
When interpreting the returned relation value, it is important to remember that the member D2D1_GEOMETRY_RELATION_IS_CONTAINED of the D2D1_GEOMETRY_RELATION enumeration type means that this geometry is contained inside inputGeometry, not that this geometry contains inputGeometry.
For more information about how to interpret other possible return values, see D2D1_GEOMETRY_RELATION.
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 |