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ID2D1Geometry::ComputePointAtLength methods

Calculates the point and tangent vector at the specified distance along the geometry.

Overload list

MethodDescription
ComputePointAtLength(FLOAT,D2D1_MATRIX_3X2_F&,D2D1_POINT_2F*,D2D1_POINT_2F*)

Calculates the point and tangent vector at the specified distance along the geometry after it has been transformed by the specified matrix and flattened using the default tolerance.

ComputePointAtLength(FLOAT,D2D1_MATRIX_3X2_F*,D2D1_POINT_2F*,D2D1_POINT_2F*)

Calculates the point and tangent vector at the specified distance along the geometry after it has been transformed by the specified matrix and flattened using the default tolerance.

ComputePointAtLength(FLOAT,D2D1_MATRIX_3X2_F&,FLOAT,D2D1_POINT_2F*,D2D1_POINT_2F*)

Calculates the point and tangent vector at the specified distance along the geometry after it has been transformed by the specified matrix and flattened using the specified tolerance.

ComputePointAtLength(FLOAT,D2D1_MATRIX_3X2_F*,FLOAT,D2D1_POINT_2F*,D2D1_POINT_2F*)

Calculates the point and tangent vector at the specified distance along the geometry after it has been transformed by the specified matrix and flattened using the specified tolerance.

Examples

The following code example shows how to use ComputePointAtLength to calculate the point and tangent vector at the specified distance along the geometry.

C++
Copy 

D2D1_POINT_2F point;
D2D1_POINT_2F tangent;
C++
Copy 

// Ask the geometry to give us the point that corresponds with the
// length at the current time.
hr = m_pPathGeometry->ComputePointAtLength(
    length, 
    NULL, 
    &point, 
    &tangent);

Requirements

Library
D2d1.lib

DLL
D2d1.dll

See also

ID2D1Geometry

 

 

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