■ WriteableBitmap 클래스에서 비트맵 픽셀을 설정하는 방법을 보여준다.
▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="600" Height="450" Title="WriteableBitmap 클래스 : 비트맵 픽셀 설정하기" Loaded="Window_Loaded"> <Grid Name="mainGrid" > </Grid> </Window> |
▶ MainWindow.xaml.cs
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using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Media.Imaging; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 윈도우 로드시 처리하기 - Window_Loaded(sender, e) /// <summary> /// 윈도우 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Window_Loaded(object sender, RoutedEventArgs e) { const int BITMAP_WIDTH = 240; const int BITMAP_HEIGHT = 240; WriteableBitmap writeableBitmap = new WriteableBitmap ( BITMAP_WIDTH, BITMAP_HEIGHT, 96, 96, PixelFormats.Bgra32, null ); byte[, ,] pixelArray = new byte[BITMAP_HEIGHT, BITMAP_WIDTH, 4]; for(int y = 0; y < BITMAP_HEIGHT; y++) { for(int x = 0; x < BITMAP_WIDTH; x++) { for(int i = 0; i < 3; i++) { pixelArray[y, x, i] = 0; } pixelArray[y, x, 3] = 255; } } // 파란색 for(int y = 0; y < 80; y++) { for(int x = 0; x <= y; x++) { pixelArray[y, x, 0] = 255; } } // 녹색 for(int y = 80; y < 160; y++) { for(int x = 0; x < 80; x++) { pixelArray[y, x, 1] = 255; } } // 빨간색 for(int y = 160; y < 240; y++) { for(int x = 0; x < 80; x++) { pixelArray[y, x, 2] = 255; } } byte[] byteArray = new byte[BITMAP_HEIGHT * BITMAP_WIDTH * 4]; int index = 0; for(int row = 0; row < BITMAP_HEIGHT; row++) { for(int col = 0; col < BITMAP_WIDTH; col++) { for(int i = 0; i < 4; i++) { byteArray[index++]= pixelArray[row, col, i]; } } } Int32Rect rectangle = new Int32Rect(0, 0, BITMAP_WIDTH, BITMAP_HEIGHT); int stride = 4 * BITMAP_WIDTH; writeableBitmap.WritePixels(rectangle, byteArray, stride, 0); Image image = new Image(); image.Stretch = Stretch.None; image.Margin = new Thickness(0); this.mainGrid.Children.Add(image); image.Source = writeableBitmap; } #endregion } } |
