ID2D1Geometry::ComputePointAtLength methods
Calculates the point and tangent vector at the specified distance along the geometry.
Overload list
| Method | Description |
|---|---|
| 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.
D2D1_POINT_2F point;
D2D1_POINT_2F tangent;
// 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
| Requirement | Value |
|---|---|
| Library |
|
| DLL |
|