ID2D1Factory::CreateEllipseGeometry-Methoden
Erstellt eine ID2D1EllipseGeometry.
Überladeliste
| Methode | BESCHREIBUNG |
|---|---|
| CreateEllipseGeometry(D2D1 _ ELLIPSE&,ID2D1EllipseGeometry * * ) | Erstellt eine ID2D1EllipseGeometry. |
| CreateEllipseGeometry(D2D1 _ ELLIPSE * ,ID2D1EllipseGeometry * * ) | Erstellt eine ID2D1EllipseGeometry. |
Beispiele
Im Folgenden werden zwei ID2D1EllipseGeometry-Objekte erstellt und mithilfe der verschiedenen Geometrie-Kombinationsmodi kombiniert.
HRESULT DemoApp::CreateGeometryResources()
{
HRESULT hr = S_OK;
ID2D1GeometrySink *pGeometrySink = NULL;
// Create the first ellipse geometry to merge.
const D2D1_ELLIPSE circle1 = D2D1::Ellipse(
D2D1::Point2F(75.0f, 75.0f),
50.0f,
50.0f
);
hr = m_pD2DFactory->CreateEllipseGeometry(
circle1,
&m_pCircleGeometry1
);
if (SUCCEEDED(hr))
{
// Create the second ellipse geometry to merge.
const D2D1_ELLIPSE circle2 = D2D1::Ellipse(
D2D1::Point2F(125.0f, 75.0f),
50.0f,
50.0f
);
hr = m_pD2DFactory->CreateEllipseGeometry(circle2, &m_pCircleGeometry2);
}
if (SUCCEEDED(hr))
{
//
// Use D2D1_COMBINE_MODE_UNION to combine the geometries.
//
hr = m_pD2DFactory->CreatePathGeometry(&m_pPathGeometryUnion);
if (SUCCEEDED(hr))
{
hr = m_pPathGeometryUnion->Open(&pGeometrySink);
if (SUCCEEDED(hr))
{
hr = m_pCircleGeometry1->CombineWithGeometry(
m_pCircleGeometry2,
D2D1_COMBINE_MODE_UNION,
NULL,
NULL,
pGeometrySink
);
}
if (SUCCEEDED(hr))
{
hr = pGeometrySink->Close();
}
SafeRelease(&pGeometrySink);
}
}
if (SUCCEEDED(hr))
{
//
// Use D2D1_COMBINE_MODE_INTERSECT to combine the geometries.
//
hr = m_pD2DFactory->CreatePathGeometry(&m_pPathGeometryIntersect);
if (SUCCEEDED(hr))
{
hr = m_pPathGeometryIntersect->Open(&pGeometrySink);
if (SUCCEEDED(hr))
{
hr = m_pCircleGeometry1->CombineWithGeometry(
m_pCircleGeometry2,
D2D1_COMBINE_MODE_INTERSECT,
NULL,
NULL,
pGeometrySink
);
}
if (SUCCEEDED(hr))
{
hr = pGeometrySink->Close();
}
SafeRelease(&pGeometrySink);
}
}
if (SUCCEEDED(hr))
{
//
// Use D2D1_COMBINE_MODE_XOR to combine the geometries.
//
hr = m_pD2DFactory->CreatePathGeometry(&m_pPathGeometryXOR);
if (SUCCEEDED(hr))
{
hr = m_pPathGeometryXOR->Open(&pGeometrySink);
if (SUCCEEDED(hr))
{
hr = m_pCircleGeometry1->CombineWithGeometry(
m_pCircleGeometry2,
D2D1_COMBINE_MODE_XOR,
NULL,
NULL,
pGeometrySink
);
}
if (SUCCEEDED(hr))
{
hr = pGeometrySink->Close();
}
SafeRelease(&pGeometrySink);
}
}
if (SUCCEEDED(hr))
{
//
// Use D2D1_COMBINE_MODE_EXCLUDE to combine the geometries.
//
hr = m_pD2DFactory->CreatePathGeometry(&m_pPathGeometryExclude);
if (SUCCEEDED(hr))
{
hr = m_pPathGeometryExclude->Open(&pGeometrySink);
if (SUCCEEDED(hr))
{
hr = m_pCircleGeometry1->CombineWithGeometry(
m_pCircleGeometry2,
D2D1_COMBINE_MODE_EXCLUDE,
NULL,
NULL,
pGeometrySink
);
}
if (SUCCEEDED(hr))
{
hr = pGeometrySink->Close();
}
SafeRelease(&pGeometrySink);
}
}
return hr;
}
Dieser Code erzeugt die in der folgenden Abbildung gezeigte Ausgabe.

Requirements (Anforderungen)
| Anforderung | Wert |
|---|---|
| Header |
|
| Bibliothek |
|
| DLL |
|