3d相册代码 效果不错
using System;using System.Collections.Generic;using System.Diagnostics;using System.Linq;using System.Windows;using System.Windows.Controls;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Media.Media3D;using System.Windows.Threading;using System.IO;using System.Security;namespace WPFDemo{ public class FlipTile3D : WrapperElement<Viewport3D> { public FlipTile3D() : base(new Viewport3D()) { Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, new Action(setup3D)); m_listener.Rendering = tick; this.Unloaded = delegate(object sender, RoutedEventArgs e) { m_listener.StopListening(); }; } #region render/layout overrides protected override void OnRender(System.Windows.Media.DrawingContext drawingContext) { base.OnRender(drawingContext); drawingContext.DrawRectangle(Brushes.Transparent, null, new Rect(this.RenderSize)); } #endregion #region mouse overrides protected override void OnMouseMove(System.Windows.Input.MouseEventArgs e) { _lastMouse = e.GetPosition(this); } protected override void OnMouseLeave(MouseEventArgs e) { _lastMouse = new Point(double.NaN, double.NaN); } protected override void OnMouseDown(MouseButtonEventArgs e) { _isFlipped = !_isFlipped; if (_isFlipped) { setClickedItem(e.GetPosition(this)); } } #endregion #region private methods private void setClickedItem(Point point) { //move point to center point -= (new Vector(this.ActualWidth / 2, this.ActualHeight / 2)); //flip it point.Y *= -1; //scale it to 1x1 dimentions double scale = Math.Min(this.ActualHeight, this.ActualWidth) / 2; point = (Point)(((Vector)point) / scale); //set it up so that bottomLeft = 0,0 & topRight = 1,1 (positive Y is up) point = (Point)(((Vector)point new Vector(1, 1)) * .5); //scale up so that the point coordinates align w/ the x/y scale point.Y *= c_yCount; point.X *= c_xCount; //now we have the indicies of the x & y of the tile clicked int yIndex = (int)Math.Floor(point.Y); int xIndex = (int)Math.Floor(point.X); int tileIndex = yIndex * c_xCount xIndex; _backMaterial.Brush = _tiles[tileIndex].DiffuseMaterial.Brush; } private void setup3D() { //perf improvement. Clipping in 3D is expensive. Avoid if you can! WrappedElement.ClipToBounds = false; PerspectiveCamera camera = new PerspectiveCamera( new Point3D(0, 0, 3.73), //position new Vector3D(0, 0, -1), //lookDirection new Vector3D(0, 1, 0), //upDirection 30 //FOV ); WrappedElement.Camera = camera; Model3DGroup everything = new Model3DGroup(); Model3DGroup lights = new Model3DGroup(); DirectionalLight whiteLight = new DirectionalLight(Colors.White, new Vector3D(0, 0, -1)); lights.Children.Add(whiteLight); everything.Children.Add(lights); ModelVisual3D model = new ModelVisual3D(); double tileSizeX = 2.0 / c_xCount; double startX = -((double)c_xCount) / 2 * tileSizeX tileSizeX / 2; double startY = -((double)c_yCount) / 2 * tileSizeX tileSizeX / 2; int index; Size tileTextureSize = new Size(1.0 / c_xCount, 1.0 / c_yCount); //so, tiles are numbers, left-to-right (ascending x), bottom-to-top (ascending y) for (int y = 0; y < c_yCount; y ) { for (int x = 0; x < c_xCount; x ) { index = y * c_xCount x; Rect backTextureCoordinates = new Rect( x * tileTextureSize.Width, // this will give you a headache. Exists since we are going // from bottom bottomLeft of 3D space (negative Y is down), // but texture coor are negative Y is up 1 - y * tileTextureSize.Height - tileTextureSize.Height, tileTextureSize.Width, tileTextureSize.Height); _tiles[index] = new TileData(); _tiles[index].Setup3DItem( everything, getMaterial(index), new Size(tileSizeX, tileSizeX), new Point(startX x * tileSizeX, startY y * tileSizeX), _backMaterial, backTextureCoordinates); } } model.Content = everything; WrappedElement.Children.Add(model); //start the per-frame tick for the physics m_listener.StartListening(); } private void tick(object sender, EventArgs e) { Vector mouseFixed = fixMouse(_lastMouse, this.RenderSize); for (int i = 0; i < _tiles.Length; i ) { //TODO: unwire Render event if nothing happens _tiles[i].TickData(mouseFixed, _isFlipped); } } private static Vector fixMouse(Point mouse, Size size) { Debug.Assert(size.Width >= 0 && size.Height >= 0); double scale = Math.Max(size.Width, size.Height) / 2; // Translate y going down to y going up mouse.Y = -mouse.Y size.Height; mouse.Y -= size.Height / 2; mouse.X -= size.Width / 2; Vector v = new Vector(mouse.X, mouse.Y); v /= scale; return v; } #endregion #region Implementation private DiffuseMaterial getMaterial(int index) { return _materials[index % _materials.Count]; } private readonly IList<DiffuseMaterial> _materials = GetSamplePictures("Picture"); private static IList<DiffuseMaterial> GetSamplePictures(string Path) { IList<DiffuseMaterial> materials; IList<string> files = null; if (!string.IsNullOrEmpty(Path)) { files = new List<string>(); try { DirectoryInfo di = new DirectoryInfo(Path); if (di.Exists) { foreach (FileInfo fileInfo in di.GetFiles("*.jpg")) { files.Add(fileInfo.FullName); if (files.Count > 50) break; } } } catch (IOException) { } catch (ArgumentException) { } catch (SecurityException) { } } if (files.Count > 0) { materials = new List<DiffuseMaterial>(); foreach (string file in files) { Uri uri = new Uri(file); BitmapImage bitmapImage = new BitmapImage(); bitmapImage.BeginInit(); bitmapImage.UriSource = uri; bitmapImage.DecodePixelWidth = 320; bitmapImage.DecodePixelHeight = 240; bitmapImage.EndInit(); bitmapImage.Freeze(); ImageBrush imageBrush = new ImageBrush(bitmapImage); imageBrush.Stretch = Stretch.UniformToFill; imageBrush.ViewportUnits = BrushMappingMode.Absolute; imageBrush.Freeze(); DiffuseMaterial diffuseMaterial = new DiffuseMaterial(imageBrush); materials.Add(diffuseMaterial); } } else { Brush[] brushes = new Brush[] { Brushes.LightBlue, Brushes.Pink, Brushes.LightGray, Brushes.Yellow, Brushes.Orange, Brushes.LightGreen }; DiffuseMaterial[] materialsArray = brushes.Select(brush => new DiffuseMaterial(brush)).ToArray(); materials = materialsArray; } return materials; } private Point _lastMouse = new Point(double.NaN, double.NaN); private bool _isFlipped; private readonly TileData[] _tiles = new TileData[c_xCount * c_yCount]; private readonly DiffuseMaterial _backMaterial = new DiffuseMaterial(); private readonly CompositionTargetRenderingListener m_listener = new CompositionTargetRenderingListener(); private const int c_xCount = 7, c_yCount = 7; #endregion }}
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