GraphicsPathIterator.CopyData(PointF[], Byte[], Int32, Int32) Método
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Copia la propiedad y PathTypes las PathPoints matrices de propiedades del asociado GraphicsPath a las dos matrices especificadas.
public:
int CopyData(cli::array <System::Drawing::PointF> ^ % points, cli::array <System::Byte> ^ % types, int startIndex, int endIndex);public int CopyData(ref System.Drawing.PointF[] points, ref byte[] types, int startIndex, int endIndex);member this.CopyData : PointF[] * Byte[] * int * int -> intPublic Function CopyData (ByRef points As PointF(), ByRef types As Byte(), startIndex As Integer, endIndex As Integer) As IntegerParámetros
- points
- PointF[]
Tras la devolución, contiene una matriz de PointF estructuras que representa los puntos de la ruta de acceso.
- types
- Byte[]
Tras la devolución, contiene una matriz de bytes que representa los tipos de puntos de la ruta de acceso.
- startIndex
- Int32
Especifica el índice inicial de las matrices.
- endIndex
- Int32
Especifica el índice final de las matrices.
Devoluciones
Número de puntos copiados.
Ejemplos
El ejemplo siguiente está diseñado para su uso con Windows Forms y requiere PaintEventArgse, un objeto de evento OnPaint. El código realiza las siguientes acciones:
Crea una ruta de acceso de gráficos.
Lo rellena con varios primitivos y algunos marcadores.
Enumera los datos de ruta de acceso en el lado izquierdo de la pantalla.
Crea y GraphicsPathIterator lo rebobina.
Incrementa el índice de datos de ruta de acceso al segundo marcador.
Llama al CopyData método para copiar los datos de ruta de acceso contenidos entre los índices inicial y final a las matrices de puntos y tipos.
Enumera estos datos copiados en el lado derecho de la pantalla.
public:
void CopyDataExample( PaintEventArgs^ e )
{
// Create a graphics path.
GraphicsPath^ myPath = gcnew GraphicsPath;
// Set up a points array.
array<Point>^ myPoints = {Point(20,20),Point(120,120),Point(20,120),Point(20,20)};
// Create a rectangle.
Rectangle myRect = Rectangle(120,120,100,100);
// Add the points, rectangle, and an ellipse to the path.
myPath->AddLines( myPoints );
myPath->SetMarkers();
myPath->AddRectangle( myRect );
myPath->SetMarkers();
myPath->AddEllipse( 220, 220, 100, 100 );
// Get the total number of points for the path, and arrays of
// the points and types.
int myPathPointCount = myPath->PointCount;
array<PointF>^myPathPoints = myPath->PathPoints;
array<Byte>^myPathTypes = myPath->PathTypes;
// Set up variables for listing the array of points on the left
// side of the screen.
int i;
float j = 20;
System::Drawing::Font^ myFont = gcnew System::Drawing::Font( "Arial",8 );
SolidBrush^ myBrush = gcnew SolidBrush( Color::Black );
// List the set of points and types and types to the left side
// of the screen.
for ( i = 0; i < myPathPointCount; i++ )
{
e->Graphics->DrawString( myPathPoints[ i ].X + ", " + myPathPoints[ i ].Y + ", " + myPathTypes[ i ], myFont, myBrush, 20, j );
j += 20;
}
// Create a GraphicsPathIterator for myPath and rewind it.
GraphicsPathIterator^ myPathIterator = gcnew GraphicsPathIterator( myPath );
myPathIterator->Rewind();
// Set up the arrays to receive the copied data.
array<PointF>^points = gcnew array<PointF>(myPathIterator->Count);
array<Byte>^types = gcnew array<Byte>(myPathIterator->Count);
int myStartIndex;
int myEndIndex;
// Increment the starting index to the second marker in the
// path.
myPathIterator->NextMarker( myStartIndex, myEndIndex );
myPathIterator->NextMarker( myStartIndex, myEndIndex );
// Copy all the points and types from the starting index to the
// ending index to the points array and the types array
// respectively.
int numPointsCopied = myPathIterator->CopyData( points, types, myStartIndex, myEndIndex );
// List the copied points to the right side of the screen.
j = 20;
int copiedStartIndex = 0;
for ( i = 0; i < numPointsCopied; i++ )
{
copiedStartIndex = myStartIndex + i;
e->Graphics->DrawString( String::Format( "Point: {0}, Value: {1}, Type: {2}", copiedStartIndex, points[ i ], types[ i ] ), myFont, myBrush, 200, j );
j += 20;
}
}
public void CopyDataExample(PaintEventArgs e)
{
// Create a graphics path.
GraphicsPath myPath = new GraphicsPath();
// Set up a points array.
Point[] myPoints =
{
new Point(20, 20),
new Point(120, 120),
new Point(20, 120),
new Point(20, 20)
};
// Create a rectangle.
Rectangle myRect = new Rectangle(120, 120, 100, 100);
// Add the points, rectangle, and an ellipse to the path.
myPath.AddLines(myPoints);
myPath.SetMarkers();
myPath.AddRectangle(myRect);
myPath.SetMarkers();
myPath.AddEllipse(220, 220, 100, 100);
// Get the total number of points for the path, and arrays of
// the points and types.
int myPathPointCount = myPath.PointCount;
PointF[] myPathPoints = myPath.PathPoints;
byte[] myPathTypes = myPath.PathTypes;
// Set up variables for listing the array of points on the left
// side of the screen.
int i;
float j = 20;
Font myFont = new Font("Arial", 8);
SolidBrush myBrush = new SolidBrush(Color.Black);
// List the set of points and types and types to the left side
// of the screen.
for(i=0; i<myPathPointCount; i++)
{
e.Graphics.DrawString(myPathPoints[i].X.ToString()+
", " + myPathPoints[i].Y.ToString() + ", " +
myPathTypes[i].ToString(),
myFont,
myBrush,
20,
j);
j+=20;
}
// Create a GraphicsPathIterator for myPath and rewind it.
GraphicsPathIterator myPathIterator =
new GraphicsPathIterator(myPath);
myPathIterator.Rewind();
// Set up the arrays to receive the copied data.
PointF[] points = new PointF[myPathIterator.Count];
byte[] types = new byte[myPathIterator.Count];
int myStartIndex;
int myEndIndex;
// Increment the starting index to the second marker in the
// path.
myPathIterator.NextMarker(out myStartIndex, out myEndIndex);
myPathIterator.NextMarker(out myStartIndex, out myEndIndex);
// Copy all the points and types from the starting index to the
// ending index to the points array and the types array
// respectively.
int numPointsCopied = myPathIterator.CopyData(
ref points,
ref types,
myStartIndex,
myEndIndex);
// List the copied points to the right side of the screen.
j = 20;
int copiedStartIndex = 0;
for(i=0; i<numPointsCopied; i++)
{
copiedStartIndex = myStartIndex + i;
e.Graphics.DrawString(
"Point: " + copiedStartIndex.ToString() +
", Value: " + points[i].ToString() +
", Type: " + types[i].ToString(),
myFont,
myBrush,
200,
j);
j+=20;
}
}
Public Sub CopyDataExample(ByVal e As PaintEventArgs)
' Create a graphics path.
Dim myPath As New GraphicsPath
' Set up a points array.
Dim myPoints As Point() = {New Point(20, 20), _
New Point(120, 120), New Point(20, 120), New Point(20, 20)}
' Create a rectangle.
Dim myRect As New Rectangle(120, 120, 100, 100)
' Add the points, rectangle, and an ellipse to the path.
myPath.AddLines(myPoints)
myPath.SetMarkers()
myPath.AddRectangle(myRect)
myPath.SetMarkers()
myPath.AddEllipse(220, 220, 100, 100)
' Get the total number of points for the path, and arrays of the
' points and types.
Dim myPathPointCount As Integer = myPath.PointCount
Dim myPathPoints As PointF() = myPath.PathPoints
Dim myPathTypes As Byte() = myPath.PathTypes
' Set up variables for listing the array of points on the left side
' of the screen.
Dim i As Integer
Dim j As Single = 20
Dim myFont As New Font("Arial", 8)
Dim myBrush As New SolidBrush(Color.Black)
' List the set of points and types and types to the left side of
' the screen.
For i = 0 To myPathPointCount - 1
e.Graphics.DrawString(myPathPoints(i).X.ToString() + ", " + _
myPathPoints(i).Y.ToString() + ", " + _
myPathTypes(i).ToString(), myFont, myBrush, 20, j)
j += 20
Next i
' Create a GraphicsPathIterator for myPath and rewind it.
Dim myPathIterator As New GraphicsPathIterator(myPath)
myPathIterator.Rewind()
' Set up the arrays to receive the copied data.
Dim points(myPathIterator.Count) As PointF
Dim types(myPathIterator.Count) As Byte
Dim myStartIndex As Integer
Dim myEndIndex As Integer
' Increment the starting index to the second marker in the path.
myPathIterator.NextMarker(myStartIndex, myEndIndex)
myPathIterator.NextMarker(myStartIndex, myEndIndex)
' Copy all the points and types from the starting index to the
' ending index to the points array and the types array
' respectively.
Dim numPointsCopied As Integer = myPathIterator.CopyData(points, _
types, myStartIndex, myEndIndex)
' List the copied points to the right side of the screen.
j = 20
Dim copiedStartIndex As Integer = 0
For i = 0 To numPointsCopied - 1
copiedStartIndex = myStartIndex + i
e.Graphics.DrawString("Point: " + _
copiedStartIndex.ToString() + ", Value: " + _
points(i).ToString() + ", Type: " + types(i).ToString(), _
myFont, myBrush, 200, j)
j += 20
Next i
End Sub
Comentarios
Use los startIndex parámetros y endIndex para copiar un intervalo especificado de los datos de ruta de acceso.