■ MeshGeometry3D 클래스에서 삼각측량법을 사용해 비치볼을 만드는 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="800" Height="600" Title="MeshGeometry3D 클래스 : 삼각측량법을 사용해 비치볼 만들기" FontFamily="나눔고딕코딩" FontSize="16"> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Media.Media3D; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); Viewport3D viewport3D = new Viewport3D(); Content = viewport3D; MeshGeometry3D meshGeometry3D = GetSphereMeshGeometry3D(new Point3D(0, 0, 0), 1.5, 144, 72); meshGeometry3D.Freeze(); Brush[] brushArray = new Brush[6] { Brushes.Red, Brushes.Blue, Brushes.Yellow, Brushes.Orange, Brushes.Green, Brushes.White }; DrawingGroup drawingGroup = new DrawingGroup(); for(int i = 0; i < brushArray.Length ; i++) { RectangleGeometry rectangleGeometry = new RectangleGeometry(new Rect(10 * i, 0, 10, 60)); GeometryDrawing geometryDrawing = new GeometryDrawing(brushArray[i], null, rectangleGeometry); drawingGroup.Children.Add(geometryDrawing); } DrawingBrush drawingBrush = new DrawingBrush(drawingGroup); drawingBrush.Freeze(); GeometryModel3D geometryModel3D = new GeometryModel3D(); geometryModel3D.Geometry = meshGeometry3D; geometryModel3D.Material = new DiffuseMaterial(drawingBrush); ModelVisual3D modelVisual3D = new ModelVisual3D(); modelVisual3D.Content = geometryModel3D; viewport3D.Children.Add(modelVisual3D); Model3DGroup model3DGroup = new Model3DGroup(); model3DGroup.Children.Add ( new AmbientLight ( Color.FromRgb(128, 128, 128) ) ); model3DGroup.Children.Add ( new DirectionalLight ( Color.FromRgb(128, 128, 128), new Vector3D(2, -3, -1) ) ); modelVisual3D = new ModelVisual3D(); modelVisual3D.Content = model3DGroup; viewport3D.Children.Add(modelVisual3D); PerspectiveCamera perspectiveCamera = new PerspectiveCamera ( new Point3D(0, 0, 8), new Vector3D(0, 0, -1), new Vector3D(0, 1, 0), 45 ); viewport3D.Camera = perspectiveCamera; AxisAngleRotation3D axisAngleRotation3D = new AxisAngleRotation3D(new Vector3D(1, 1, 0), 0); RotateTransform3D rotateTransform3D = new RotateTransform3D(axisAngleRotation3D); geometryModel3D.Transform = rotateTransform3D; DoubleAnimation doubleAnimation = new DoubleAnimation(360, new Duration(TimeSpan.FromSeconds(5))); doubleAnimation.RepeatBehavior = RepeatBehavior.Forever; axisAngleRotation3D.BeginAnimation(AxisAngleRotation3D.AngleProperty, doubleAnimation); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private #region 구 메쉬 기하학 3D 구하기 - GetSphereMeshGeometry3D(centerPoint3D, radius, sliceCount, stackCount) /// <summary> /// 구 메쉬 기하학 3D 구하기 /// </summary> /// <param name="centerPoint3D">중앙 포인트 3D</param> /// <param name="radius">반경</param> /// <param name="sliceCount">슬라이스 수</param> /// <param name="stackCount">스택 수</param> /// <returns>구 메쉬 기하학 3D</returns> MeshGeometry3D GetSphereMeshGeometry3D(Point3D centerPoint3D, double radius, int sliceCount, int stackCount) { MeshGeometry3D meshGeometry3D = new MeshGeometry3D(); for(int stack = 0; stack <= stackCount; stack++) { double phi = Math.PI / 2 - stack * Math.PI / stackCount; double y = radius * Math.Sin(phi); double scale = -radius * Math.Cos(phi); for(int slice = 0; slice <= sliceCount; slice++) { double theta = slice * 2 * Math.PI / sliceCount; double x = scale * Math.Sin(theta); double z = scale * Math.Cos(theta); Vector3D normal = new Vector3D(x, y, z); meshGeometry3D.Normals.Add(normal); meshGeometry3D.Positions.Add(normal + centerPoint3D); meshGeometry3D.TextureCoordinates.Add ( new Point ( (double)slice / sliceCount, (double)stack / stackCount ) ); } } for(int stack = 0; stack < stackCount; stack++) { for(int slice = 0; slice < sliceCount; slice++) { int n = sliceCount + 1; if(stack != 0) { meshGeometry3D.TriangleIndices.Add((stack + 0) * n + slice ); meshGeometry3D.TriangleIndices.Add((stack + 1) * n + slice ); meshGeometry3D.TriangleIndices.Add((stack + 0) * n + slice + 1); } if(stack != stackCount - 1) { meshGeometry3D.TriangleIndices.Add((stack + 0) * n + slice + 1); meshGeometry3D.TriangleIndices.Add((stack + 1) * n + slice ); meshGeometry3D.TriangleIndices.Add((stack + 1) * n + slice + 1); } } } return meshGeometry3D; } #endregion } } |
