Model 3D en C#

Bonjour,

Je suis nouveau dans le monde du développement C# et du développement 3D, Je viens de construire mon premier cube 3D dans une class que j'ai appelé MyCube.

Code:

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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.Windows.Media.Media3D; using System.Windows.Media.Animation; using WpfApplication3.Properties;   namespace WpfApplication3 { class MyCube {   Viewport3D Viewport = new Viewport3D(); //Viewport3D class provides a rendering surface for 3-D visual content GeometryModel3D surface1 = new GeometryModel3D();//GeometryModel3D class object provides generalized transformation support for 3-D objects GeometryModel3D surface2 = new GeometryModel3D(); GeometryModel3D surface3 = new GeometryModel3D(); GeometryModel3D surface4 = new GeometryModel3D(); GeometryModel3D surface5 = new GeometryModel3D(); GeometryModel3D surface6 = new GeometryModel3D();   //adding for test GeometryModel3D text1 = new GeometryModel3D(); MeshGeometry3D text1plane = new MeshGeometry3D(); DiffuseMaterial surface1Materialtext1 = new DiffuseMaterial();   PerspectiveCamera Camera = new PerspectiveCamera();//PerspectiveCamera class object represents a perspective projection camera   DirectionalLight myDLight = new DirectionalLight();//DirectionalLight class object provides effect along a direction DirectionalLight myDLight2 = new DirectionalLight(); AmbientLight AmLight = new AmbientLight();//AmbientLight class objects provides Lights every surface uniformly a bright AmbientLight creates because of lack of shading, but a low-intensity AmbientLight approximatesthe effect of light that has been scattered by reflecting between diffuse surfaces in the scene.   MaterialGroup myMaterials = new MaterialGroup();//MaterialGroup class objects applies multiple Materials to a model each Material is rendered in order, with the last Material in the group appearing on top. Transform3DGroup Transgroup = new Transform3DGroup();//Transform3DGroup class contains a collection of Transform3Ds. Model3DGroup Modelgroup = new Model3DGroup();//The Model3DGroup class is itself a Model3D and is often used to group multiple GeometryModel3Ds Model3DGroup cube = new Model3DGroup(); MeshGeometry3D surface1Plane = new MeshGeometry3D();// MeshGeometry3D class represents a set of 3D surfaces MeshGeometry3D surface2Plane = new MeshGeometry3D(); MeshGeometry3D surface3Plane = new MeshGeometry3D(); MeshGeometry3D surface4Plane = new MeshGeometry3D(); MeshGeometry3D surface5Plane = new MeshGeometry3D(); MeshGeometry3D surface6Plane = new MeshGeometry3D(); DiffuseMaterial surface1Material = new DiffuseMaterial();//DiffuseMaterial class provides scatters light striking the surface in all directions, DiffuseMaterial surface2Material = new DiffuseMaterial(); DiffuseMaterial surface3Material = new DiffuseMaterial(); DiffuseMaterial surface4Material = new DiffuseMaterial(); DiffuseMaterial surface5Material = new DiffuseMaterial(); DiffuseMaterial surface6Material = new DiffuseMaterial(); ModelVisual3D ModelVisualD = new ModelVisual3D();//ModelVisual3D class contains 3-D models TextBlock textBlock = new TextBlock(); //Name of the image   ImageBrush imageBrushFace1; ImageBrush imageBrushFace2; ImageBrush imageBrushFace3; ImageBrush imageBrushFace4; ImageBrush imageBrushFace5; ImageBrush imageBrushFace6;       public MyCube(ImageBrush imageBrushFace1, ImageBrush imageBrushFace2, ImageBrush imageBrushFace3, ImageBrush imageBrushFace4, ImageBrush imageBrushFace5, ImageBrush imageBrushFace6) {   this.imageBrushFace1 = imageBrushFace1; this.imageBrushFace2 = imageBrushFace2; this.imageBrushFace3 = imageBrushFace3; this.imageBrushFace4 = imageBrushFace4; this.imageBrushFace5 = imageBrushFace5; this.imageBrushFace6 = imageBrushFace6;   }           public Viewport3D createMyCube() {   Camera.Position = new Point3D(0, 0, 4); Camera.LookDirection = new Vector3D(0, 0, -1); Camera.UpDirection = new Vector3D(0, 1, 0); Camera.FieldOfView = Convert.ToDouble(50); //setting the color of light AmLight.Color = Colors.White;   text1.Geometry = text1plane; surface1.Geometry = surface1Plane; surface2.Geometry = surface2Plane; surface3.Geometry = surface3Plane; surface4.Geometry = surface4Plane; surface5.Geometry = surface5Plane; surface6.Geometry = surface6Plane;   Vector3D vecD = new Vector3D(-50, -90, 0);   Rotation3D RD = new AxisAngleRotation3D(vecD, 1);   RotateTransform3D RotateTrans = new RotateTransform3D(RD);//RotateTransform3D class specify rotation transformation that is parameterized   //Define an animation for the rotation   DoubleAnimation myAnimation = new DoubleAnimation(); myAnimation.From = 1; myAnimation.To = 361; myAnimation.Duration = new Duration(TimeSpan.FromMilliseconds(5000));//Defining time in second for cube that will be rotate myAnimation.RepeatBehavior = RepeatBehavior.Forever; RotateTrans.Rotation.BeginAnimation(AxisAngleRotation3D.AngleProperty, myAnimation);   //Add transformation to the model   Transgroup.Children.Add(RotateTrans);   cube.Children.Add(surface1); cube.Children.Add(surface2); cube.Children.Add(surface3); cube.Children.Add(surface4); cube.Children.Add(surface5); cube.Children.Add(surface6);     Modelgroup.Transform = Transgroup;   //Create directional Light effects myDLight.Color = Colors.White; myDLight.Direction = new Vector3D(-0.612372, -0.5, -0.612372); //Create directional Light effects // myDLight2.Color = Colors.White; // myDLight2.Direction = new Vector3D(-0.612372, -0.5, -0.612372);   //myDLight2.Direction = new Vector3D(0.612372, -0.5, -0.612372);         Modelgroup.Children.Add(cube); Modelgroup.Children.Add(text1); Modelgroup.Children.Add(myDLight); // Modelgroup.Children.Add(myDLight2); Modelgroup.Children.Add(AmLight);   Viewport.Camera = Camera;   // ModelVisualD.Content = myDLight;   //ModelVisualD.Content = myDLight2;   ModelVisualD.Content = Modelgroup;     Viewport.Children.Add(ModelVisualD); //Defining surface position in world coordinate   text1plane.Positions.Add(new Point3D(4, 4, -5)); text1plane.Positions.Add(new Point3D(3.5,-3.5, -3.5)); text1plane.Positions.Add(new Point3D(4, 4, -5)); text1plane.Positions.Add(new Point3D(4, 4, -5)); text1plane.Positions.Add(new Point3D(4, 4, -5)); text1plane.Positions.Add(new Point3D(4, 4, -5)); text1plane.TriangleIndices.Add(0); text1plane.TriangleIndices.Add(1); text1plane.TriangleIndices.Add(0); text1plane.TriangleIndices.Add(0); text1plane.TriangleIndices.Add(0); text1plane.Normals.Add(new Vector3D(0, 0, -6)); text1plane.Normals.Add(new Vector3D(0, 0, -5)); text1.Material = new DiffuseMaterial(imageBrushFace1);         //Defining surface position in world coordinates //-----------------------surface1------------------------ surface1Plane.Positions.Add(new Point3D(0.5, 0.5, -0.5)); surface1Plane.Positions.Add(new Point3D(0.5, -0.5, -0.5)); surface1Plane.Positions.Add(new Point3D(-0.5, -0.5, -0.5)); surface1Plane.Positions.Add(new Point3D(-0.5, -0.5, -0.5)); surface1Plane.Positions.Add(new Point3D(-0.5, 0.5, -0.5)); surface1Plane.Positions.Add(new Point3D(0.5, 0.5, -0.5));       //TriangleIndices—Describes the connections between the vertices to form triangles if TriangleIndices is not specified, it is implied that the positions should beconnected in the order they appear: 0 1 2, then 3 4 5, and so on. surface1Plane.TriangleIndices.Add(0); surface1Plane.TriangleIndices.Add(1); surface1Plane.TriangleIndices.Add(2); surface1Plane.TriangleIndices.Add(3); surface1Plane.TriangleIndices.Add(4); surface1Plane.TriangleIndices.Add(5);   surface1Plane.Normals.Add(new Vector3D(0, 0, -1)); surface1Plane.Normals.Add(new Vector3D(0, 0, -1)); surface1Plane.Normals.Add(new Vector3D(0, 0, -1)); surface1Plane.Normals.Add(new Vector3D(0, 0, -1)); surface1Plane.Normals.Add(new Vector3D(0, 0, -1)); surface1Plane.Normals.Add(new Vector3D(0, 0, -1));   surface1Plane.TextureCoordinates.Add(new Point(1, 0)); surface1Plane.TextureCoordinates.Add(new Point(1, 1)); surface1Plane.TextureCoordinates.Add(new Point(0, 1)); surface1Plane.TextureCoordinates.Add(new Point(0, 1)); surface1Plane.TextureCoordinates.Add(new Point(0, 0)); surface1Plane.TextureCoordinates.Add(new Point(1, 0));   //-----------------------surface2------------------------   surface2Plane.Positions.Add(new Point3D(0.5, 0.5, 0.5)); surface2Plane.Positions.Add(new Point3D(-0.5, 0.5, 0.5)); surface2Plane.Positions.Add(new Point3D(-0.5, -0.5, 0.5)); surface2Plane.Positions.Add(new Point3D(-0.5, -0.5, 0.5)); surface2Plane.Positions.Add(new Point3D(0.5, -0.5, 0.5)); surface2Plane.Positions.Add(new Point3D(0.5, 0.5, 0.5));     surface2Plane.TriangleIndices.Add(0); surface2Plane.TriangleIndices.Add(1); surface2Plane.TriangleIndices.Add(2); surface2Plane.TriangleIndices.Add(3); surface2Plane.TriangleIndices.Add(4); surface2Plane.TriangleIndices.Add(5);   surface2Plane.Normals.Add(new Vector3D(0, 0, 1)); surface2Plane.Normals.Add(new Vector3D(0, 0, 1)); surface2Plane.Normals.Add(new Vector3D(0, 0, 1)); surface2Plane.Normals.Add(new Vector3D(0, 0, 1)); surface2Plane.Normals.Add(new Vector3D(0, 0, 1)); surface2Plane.Normals.Add(new Vector3D(0, 0, 1));   surface2Plane.TextureCoordinates.Add(new Point(0, 0)); surface2Plane.TextureCoordinates.Add(new Point(1, 0)); surface2Plane.TextureCoordinates.Add(new Point(1, 1)); surface2Plane.TextureCoordinates.Add(new Point(1, 1)); surface2Plane.TextureCoordinates.Add(new Point(0, 1)); surface2Plane.TextureCoordinates.Add(new Point(0, 0));   //-----------------------surface3------------------------   surface3Plane.Positions.Add(new Point3D(0.5, -0.5, 0.5)); surface3Plane.Positions.Add(new Point3D(-0.5, -0.5, 0.5)); surface3Plane.Positions.Add(new Point3D(-0.5, -0.5, -0.5)); surface3Plane.Positions.Add(new Point3D(-0.5, -0.5, -0.5)); surface3Plane.Positions.Add(new Point3D(0.5, -0.5, -0.5)); surface3Plane.Positions.Add(new Point3D(0.5, -0.5, 0.5));     surface3Plane.TriangleIndices.Add(0); surface3Plane.TriangleIndices.Add(1); surface3Plane.TriangleIndices.Add(2); surface3Plane.TriangleIndices.Add(3); surface3Plane.TriangleIndices.Add(4); surface3Plane.TriangleIndices.Add(5);   surface3Plane.Normals.Add(new Vector3D(0, -1, 0)); surface3Plane.Normals.Add(new Vector3D(0, -1, 0)); surface3Plane.Normals.Add(new Vector3D(0, -1, 0)); surface3Plane.Normals.Add(new Vector3D(0, -1, 0)); surface3Plane.Normals.Add(new Vector3D(0, -1, 0)); surface3Plane.Normals.Add(new Vector3D(0, -1, 0));   surface3Plane.TextureCoordinates.Add(new Point(0, 0)); surface3Plane.TextureCoordinates.Add(new Point(1, 0)); surface3Plane.TextureCoordinates.Add(new Point(1, 1)); surface3Plane.TextureCoordinates.Add(new Point(1, 1)); surface3Plane.TextureCoordinates.Add(new Point(0, 1)); surface3Plane.TextureCoordinates.Add(new Point(0, 0));   //-----------------------surface4------------------------   surface4Plane.Positions.Add(new Point3D(0.5, 0.5, 0.5)); surface4Plane.Positions.Add(new Point3D(0.5, -0.5, 0.5)); surface4Plane.Positions.Add(new Point3D(0.5, -0.5, -0.5)); surface4Plane.Positions.Add(new Point3D(0.5, -0.5, -0.5)); surface4Plane.Positions.Add(new Point3D(0.5, 0.5, -0.5)); surface4Plane.Positions.Add(new Point3D(0.5, 0.5, 0.5));     surface4Plane.TriangleIndices.Add(0); surface4Plane.TriangleIndices.Add(1); surface4Plane.TriangleIndices.Add(2); surface4Plane.TriangleIndices.Add(3); surface4Plane.TriangleIndices.Add(4); surface4Plane.TriangleIndices.Add(5);   surface4Plane.Normals.Add(new Vector3D(1, 0, 0)); surface4Plane.Normals.Add(new Vector3D(1, 0, 0)); surface4Plane.Normals.Add(new Vector3D(1, 0, 0)); surface4Plane.Normals.Add(new Vector3D(1, 0, 0)); surface4Plane.Normals.Add(new Vector3D(1, 0, 0)); surface4Plane.Normals.Add(new Vector3D(1, 0, 0));   surface4Plane.TextureCoordinates.Add(new Point(1, 0)); surface4Plane.TextureCoordinates.Add(new Point(1, 1)); surface4Plane.TextureCoordinates.Add(new Point(0, 1)); surface4Plane.TextureCoordinates.Add(new Point(0, 1)); surface4Plane.TextureCoordinates.Add(new Point(0, 0)); surface4Plane.TextureCoordinates.Add(new Point(1, 0));   // -----------------------surface5------------------------   surface5Plane.Positions.Add(new Point3D(-0.5, 0.5, 0.5)); surface5Plane.Positions.Add(new Point3D(0.5, 0.5, 0.5)); surface5Plane.Positions.Add(new Point3D(0.5, 0.5, -0.5)); surface5Plane.Positions.Add(new Point3D(0.5, 0.5, -0.5)); surface5Plane.Positions.Add(new Point3D(-0.5, 0.5, -0.5)); surface5Plane.Positions.Add(new Point3D(-0.5, 0.5, 0.5));   surface5Plane.TriangleIndices.Add(0); surface5Plane.TriangleIndices.Add(1); surface5Plane.TriangleIndices.Add(2); surface5Plane.TriangleIndices.Add(3); surface5Plane.TriangleIndices.Add(4); surface5Plane.TriangleIndices.Add(5);   surface5Plane.Normals.Add(new Vector3D(0, 1, 0)); surface5Plane.Normals.Add(new Vector3D(0, 1, 0)); surface5Plane.Normals.Add(new Vector3D(0, 1, 0)); surface5Plane.Normals.Add(new Vector3D(0, 1, 0)); surface5Plane.Normals.Add(new Vector3D(0, 1, 0)); surface5Plane.Normals.Add(new Vector3D(0, 1, 0));   surface5Plane.TextureCoordinates.Add(new Point(1, 1)); surface5Plane.TextureCoordinates.Add(new Point(0, 1)); surface5Plane.TextureCoordinates.Add(new Point(0, 0)); surface5Plane.TextureCoordinates.Add(new Point(0, 0)); surface5Plane.TextureCoordinates.Add(new Point(1, 0)); surface5Plane.TextureCoordinates.Add(new Point(1, 1));   // -----------------------surface6------------------------   surface6Plane.Positions.Add(new Point3D(-0.5, -0.5, 0.5)); surface6Plane.Positions.Add(new Point3D(-0.5, 0.5, 0.5)); surface6Plane.Positions.Add(new Point3D(-0.5, 0.5, -0.5)); surface6Plane.Positions.Add(new Point3D(-0.5, 0.5, -0.5)); surface6Plane.Positions.Add(new Point3D(-0.5, -0.5, -0.5)); surface6Plane.Positions.Add(new Point3D(-0.5, -0.5, 0.5));     surface6Plane.TriangleIndices.Add(0); surface6Plane.TriangleIndices.Add(1); surface6Plane.TriangleIndices.Add(2); surface6Plane.TriangleIndices.Add(3); surface6Plane.TriangleIndices.Add(4); surface6Plane.TriangleIndices.Add(5);   surface6Plane.Normals.Add(new Vector3D(-1, 0, 0)); surface6Plane.Normals.Add(new Vector3D(-1, 0, 0)); surface6Plane.Normals.Add(new Vector3D(-1, 0, 0)); surface6Plane.Normals.Add(new Vector3D(-1, 0, 0)); surface6Plane.Normals.Add(new Vector3D(-1, 0, 0)); surface6Plane.Normals.Add(new Vector3D(-1, 0, 0));   surface6Plane.TextureCoordinates.Add(new Point(0, 1)); surface6Plane.TextureCoordinates.Add(new Point(0, 0)); surface6Plane.TextureCoordinates.Add(new Point(1, 0)); surface6Plane.TextureCoordinates.Add(new Point(1, 0)); surface6Plane.TextureCoordinates.Add(new Point(1, 1)); surface6Plane.TextureCoordinates.Add(new Point(0, 1));   //Accessing ImageBrush tags from App.xaml file with their keys name   DiffuseMaterial surface1Material = new DiffuseMaterial(imageBrushFace1); DiffuseMaterial surface2Material = new DiffuseMaterial(imageBrushFace1); DiffuseMaterial surface3Material = new DiffuseMaterial(imageBrushFace1); DiffuseMaterial surface4Material = new DiffuseMaterial(imageBrushFace1); DiffuseMaterial surface5Material = new DiffuseMaterial(imageBrushFace1); DiffuseMaterial surface6Material = new DiffuseMaterial(imageBrushFace1);   //DiffuseMaterial surface1Material = new DiffuseMaterial((Brush)Application.Current.Resources[ImageName1]); //DiffuseMaterial surface2Material = new DiffuseMaterial((Brush)Application.Current.Resources[ImageName2]); //DiffuseMaterial surface3Material = new DiffuseMaterial((Brush)Application.Current.Resources[ImageName3]); //DiffuseMaterial surface4Material = new DiffuseMaterial((Brush)Application.Current.Resources[ImageName4]); //DiffuseMaterial surface5Material = new DiffuseMaterial((Brush)Application.Current.Resources[ImageName5]); //DiffuseMaterial surface6Material = new DiffuseMaterial((Brush)Application.Current.Resources[ImageName6]);     surface2.Material = surface2Material; surface6.Material = surface6Material; surface1.Material = surface1Material; surface3.Material = surface3Material; surface4.Material = surface4Material; surface5.Material = surface5Material; //mainWindow.Content = Viewport;   return Viewport; }     } }

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Cette classe renvoie un viewport 3D, et j' affiche mon composant dans ma fenêtre comme cela :

Code:

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public MainWindow() { InitializeComponent();   //Create 3Dcube MyCube mycube = new MyCube(imagebrush, imagebrush, imagebrush, imagebrush, imagebrush, imagebrush);   mainWindow.Content = mycube.createMyCube();   }

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Mais une fois que j'essai de mettre mon cube dans un canvas ou dans un stackPanel ou bien un élément de type Grid mon cube ne s'affiche plus.

mon code est le suivant :

Code:

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public StackPanel addingStackPanel(Viewport3D viewport) {   // Create a StackPanel and Add children StackPanel myStackPanel = new StackPanel(); myStackPanel.Orientation = Orientation.Horizontal;   Border myBorder1 = new Border(); myBorder1.Width = 100; myBorder1.Height = 50; TextBlock txt1 = new TextBlock(); txt1.Foreground = Brushes.White; txt1.FontSize = 16; txt1.Text = "Stacked Item #1"; myBorder1.Child = txt1;   Border myBorder2 = new Border(); myBorder2.Width = 150; myBorder2.Height = 50; TextBlock txt2 = new TextBlock(); txt2.Foreground = Brushes.White; txt2.FontSize = 16; txt2.Text = "Stacked Item #2"; myBorder2.Child = txt2;   Border myBorder3 = new Border(); myBorder3.BorderBrush = Brushes.Black; //myBorder3. myBorder3.Width = 150; myBorder2.Height = 100; TextBlock txt3 = new TextBlock(); txt3.Foreground = Brushes.White; txt3.FontSize = 16; txt3.Text = "Stacked Item #3"; myBorder3.Child = txt3;   // Add the Borders to the StackPanel Children Collection     mystackpanel.Children.Add(viewport); mystackpanel.Children.Add(myBorder1); myStackPanel.Children.Add(myBorder2); myStackPanel.Children.Add(myBorder3);   return mystackpanel; }

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et la j'affiche mon StackPanel en faisant :

Code:

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public MainWindow() { InitializeComponent();   //Create 3Dcube MyCube mycube = new MyCube(imagebrush, imagebrush, imagebrush, imagebrush, imagebrush, imagebrush);   mainWindow.Content = addingStackPanel(viewport);   }

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Et la quand j'essai d'afficher mon stack panel mon cube 3D n'apparait plus.
J'ai testé avec le composant grid et canvas même résultat le cube ne s'affiche pas.
Quelqu'un à t-il une idée du pourquoi ?


Cordialement

Le principal problème vient du fait que par default dans un stackpanel, la taille des éléments est de 0. Il faut indiquer une valeur soit à MinHeight soit à Height.

Le 2eme point est que dans ton code tu passe le paramètre viewport a la fonction addingStackPanel mais tu on ne sais pas d’où il vient.

Ca serai plutot :

Code:

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public MainWindow() { InitializeComponent();   MyCube mycube = new MyCube(imagebrush, imagebrush, imagebrush, imagebrush, imagebrush, imagebrush); mainWindow.Content = addingStackPanel(mycube.createMyCube()); }

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Sinon pour les bonnes pratiques il vaut mieux faire un UserControl qui contient et manipule le ViewPort plutôt qu'une classe qui le créer.

CubeControl.Xaml.cs

Code:

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public partial class CubeControl : UserControl { private Brush _imageBrushFace1; public Brush ImageBrushFace1 { get { return _imageBrushFace1; } set { _imageBrushFace1 = value; FillViewPort(); } }   public CubeControl() { InitializeComponent(); }   private void FillViewPort() { ... } }

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Code:

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<UserControl x:Class="WpfApplication3.CubeControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="300" x:Name="ThisControl"> <Grid x:Name="MainLayout"> <Viewport3D x:Name="CubeViewPort"/> </Grid> </UserControl>

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