public GlobeRayCasting()
{
Ellipsoid globeShape = Ellipsoid.ScaledWgs84;
_window = Device.CreateWindow(800, 600, "Chapter 4: Globe Ray Casting");
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_sceneState = new SceneState();
_camera = new CameraLookAtPoint(_sceneState.Camera, _window, globeShape);
_clearState = new ClearState();
_window.Keyboard.KeyDown += delegate(object sender, KeyboardKeyEventArgs e)
{
if (e.Key == KeyboardKey.P)
{
CenterCameraOnPoint();
}
else if (e.Key == KeyboardKey.C)
{
CenterCameraOnGlobeCenter();
}
};
Bitmap bitmap = new Bitmap("NE2_50M_SR_W_4096.jpg");
_texture = Device.CreateTexture2D(bitmap, TextureFormat.RedGreenBlue8, false);
_globe = new RayCastedGlobe(_window.Context);
_globe.Shape = globeShape;
_globe.Texture = _texture;
_globe.ShowWireframeBoundingBox = true;
_sceneState.Camera.ZoomToTarget(globeShape.MaximumRadius);
}
public Multithreading()
{
Ellipsoid globeShape = Ellipsoid.ScaledWgs84;
_workerWindow = Device.CreateWindow(1, 1);
_window = Device.CreateWindow(800, 600, "Chapter 10: Multithreading");
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_sceneState = new SceneState();
_camera = new CameraLookAtPoint(_sceneState.Camera, _window, globeShape);
_clearState = new ClearState();
Bitmap bitmap = new Bitmap("NE2_50M_SR_W_4096.jpg");
_texture = Device.CreateTexture2D(bitmap, TextureFormat.RedGreenBlue8, false);
_globe = new RayCastedGlobe(_window.Context);
_globe.Shape = globeShape;
_globe.Texture = _texture;
_globe.UseAverageDepth = true;
///////////////////////////////////////////////////////////////////
_doneQueue.MessageReceived += ProcessNewShapefile;
_requestQueue.MessageReceived += new ShapefileWorker(_workerWindow.Context, globeShape, _doneQueue).Process;
// 2ND_EDITION: Draw order
_requestQueue.Post(new ShapefileRequest("110m_admin_0_countries.shp",
new ShapefileAppearance()));
_requestQueue.Post(new ShapefileRequest("110m_admin_1_states_provinces_lines_shp.shp",
new ShapefileAppearance()));
_requestQueue.Post(new ShapefileRequest("airprtx020.shp",
new ShapefileAppearance()
{
Bitmap = new Bitmap("paper-plane--arrow.png")
}));
_requestQueue.Post(new ShapefileRequest("amtrakx020.shp",
new ShapefileAppearance()
{
Bitmap = new Bitmap("car-red.png")
}));
_requestQueue.Post(new ShapefileRequest("110m_populated_places_simple.shp",
new ShapefileAppearance()
{
Bitmap = new Bitmap("032.png")
}));
#if SINGLE_THREADED
_requestQueue.ProcessQueue();
#else
_requestQueue.StartInAnotherThread();
#endif
///////////////////////////////////////////////////////////////////
_sceneState.Camera.ZoomToTarget(globeShape.MaximumRadius);
}
public ClipmapTerrainOnGlobe()
{
_window = Device.CreateWindow(800, 600, "Chapter 13: Clipmap Terrain on a Globe");
_ellipsoid = Ellipsoid.Wgs84;
WorldWindTerrainSource terrainSource = new WorldWindTerrainSource();
EsriRestImagery imagery = new EsriRestImagery();
_clipmap = new GlobeClipmapTerrain(_window.Context, terrainSource, imagery, _ellipsoid, 511);
_clipmap.HeightExaggeration = 1.0f;
_sceneState = new SceneState();
_sceneState.DiffuseIntensity = 0.90f;
_sceneState.SpecularIntensity = 0.05f;
_sceneState.AmbientIntensity = 0.05f;
_sceneState.Camera.FieldOfViewY = Math.PI / 3.0;
_clearState = new ClearState();
_clearState.Color = Color.White;
_sceneState.Camera.PerspectiveNearPlaneDistance = 0.000001 * _ellipsoid.MaximumRadius;
_sceneState.Camera.PerspectiveFarPlaneDistance = 10.0 * _ellipsoid.MaximumRadius;
_sceneState.SunPosition = new Vector3D(200000, 300000, 200000) * _ellipsoid.MaximumRadius;
_lookCamera = new CameraLookAtPoint(_sceneState.Camera, _window, _ellipsoid);
_lookCamera.Range = 1.5 * _ellipsoid.MaximumRadius;
_globe = new RayCastedGlobe(_window.Context);
_globe.Shape = _ellipsoid;
Bitmap bitmap = new Bitmap("NE2_50M_SR_W_4096.jpg");
_globe.Texture = Device.CreateTexture2D(bitmap, TextureFormat.RedGreenBlue8, false);
_clearDepth = new ClearState();
_clearDepth.Buffers = ClearBuffers.DepthBuffer | ClearBuffers.StencilBuffer;
_window.Keyboard.KeyDown += OnKeyDown;
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_window.PreRenderFrame += OnPreRenderFrame;
_hudFont = new Font("Arial", 16);
_hud = new HeadsUpDisplay();
_hud.Color = Color.Blue;
UpdateHUD();
}
public GlobeRayCasting()
{
Ellipsoid globeShape = Ellipsoid.ScaledWgs84;
_window = Device.CreateWindow(800, 600, "Chapter 4: Globe Ray Casting");
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
//_sceneState = new SceneState();
//_camera = new CameraLookAtPoint(_sceneState.Camera, _window, globeShape);
SetupVR(globeShape);
_clearState = new ClearState();
//_window.Keyboard.KeyDown += delegate(object sender, KeyboardKeyEventArgs e)
//{
// if (e.Key == KeyboardKey.P)
// {
// CenterCameraOnPoint();
// }
// else if (e.Key == KeyboardKey.C)
// {
// CenterCameraOnGlobeCenter();
// }
//};
_leftEyeFrameBuffer = _window.Context.CreateFramebuffer();
_rightEyeFrameBuffer = _window.Context.CreateFramebuffer();
_doubleViewportQuad = new DoubleViewportQuad(_window.Context);
Bitmap bitmap = new Bitmap("NE2_50M_SR_W_4096.jpg");
_texture = Device.CreateTexture2D(bitmap, TextureFormat.RedGreenBlue8, false);
_globe = new RayCastedGlobe(_window.Context);
_globe.Shape = globeShape;
_globe.Texture = _texture;
_globe.ShowWireframeBoundingBox = true;
_leftEyeSceneState.Camera.ZoomToTarget(globeShape.MaximumRadius);
// 相机参数变换需要更新SceneState的内部变换矩阵
UpdateLeftEyeSceneState();
_rightEyeSceneState.Camera.ZoomToTarget(globeShape.MaximumRadius);
// 相机参数变换需要更新SceneState的内部变换矩阵
UpdateRightEyeSceneState();
}
public Curves()
{
_semiMinorAxis = Ellipsoid.ScaledWgs84.Radii.Z;
SetShape();
_window = Device.CreateWindow(800, 600, "Chapter 2: Curves");
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_window.Keyboard.KeyDown += OnKeyDown;
_sceneState = new SceneState();
_camera = new CameraLookAtPoint(_sceneState.Camera, _window, _globeShape);
_clearState = new ClearState();
_texture = Device.CreateTexture2D(new Texture2DDescription(1, 1, TextureFormat.RedGreenBlue8));
WritePixelBuffer pixelBuffer = Device.CreateWritePixelBuffer(PixelBufferHint.Stream, 3);
pixelBuffer.CopyFromSystemMemory(new byte[] { 0, 255, 127 });
_texture.CopyFromBuffer(pixelBuffer, ImageFormat.RedGreenBlue, ImageDatatype.UnsignedByte, 1);
_instructions = new HeadsUpDisplay();
_instructions.Color = Color.Black;
_sampledPoints = new BillboardCollection(_window.Context);
_sampledPoints.Texture = Device.CreateTexture2D(Device.CreateBitmapFromPoint(8), TextureFormat.RedGreenBlueAlpha8, false);
_sampledPoints.DepthTestEnabled = false;
_ellipsoid = new RayCastedGlobe(_window.Context);
_ellipsoid.Texture = _texture;
_polyline = new Polyline();
_polyline.Width = 3;
_polyline.DepthTestEnabled = false;
_plane = new Plane(_window.Context);
_plane.Origin = Vector3D.Zero;
_plane.OutlineWidth = 3;
CreateScene();
///////////////////////////////////////////////////////////////////
_sceneState.Camera.Eye = Vector3D.UnitY;
_sceneState.Camera.ZoomToTarget(2 * _globeShape.MaximumRadius);
}
public Curves()
{
_semiMinorAxis = Ellipsoid.ScaledWgs84.Radii.Z;
// 根据椭球对象的尺寸计算表面设定点的三维坐标
SetShape();
// 创建主窗口
_window = Device.CreateWindow(800, 600, "Chapter 2: Curves");
// 设置主窗口回调函数
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_window.Keyboard.KeyDown += OnKeyDown;
// 创建主场景OpenGL状态存储对象
_sceneState = new SceneState();
// 设置主场景照相机类型（固定观察一点的照相机）
_camera = new CameraLookAtPoint(_sceneState.Camera, _window, _globeShape);
// 创建状态（scissor/color/depth/stencil）清除对象
_clearState = new ClearState();
// 创建单色纹理对象（用于对椭球着色）
// 因为RayCastedGlobe对象的颜色只能通过其Texture接口设置
_texture = Device.CreateTexture2D(new Texture2DDescription(1, 1, TextureFormat.RedGreenBlue8));
WritePixelBuffer pixelBuffer = Device.CreateWritePixelBuffer(PixelBufferHint.Stream, 3);
pixelBuffer.CopyFromSystemMemory(new byte[] { 0, 255, 127 });
_texture.CopyFromBuffer(pixelBuffer, ImageFormat.RedGreenBlue, ImageDatatype.UnsignedByte, 1);
// 创建窗口表面的信息显示对象
_instructions = new HeadsUpDisplay();
// 设置信息显示前景色
_instructions.Color = Color.Black;
// 创建椭球表面采样点billboard显示集合对象
_sampledPoints = new BillboardCollection(_window.Context);
// 创建并设置billboard显示纹理为直径8个窗口像素的点
_sampledPoints.Texture = Device.CreateTexture2D(Device.CreateBitmapFromPoint(8), TextureFormat.RedGreenBlueAlpha8, false);
// 关闭采样点billboard集合显示对象的深度测试（使其在任何角度都可见）
_sampledPoints.DepthTestEnabled = false;
// 创建RayCastedGlobe椭球绘制对象并设置纹理
_ellipsoid = new RayCastedGlobe(_window.Context);
_ellipsoid.Texture = _texture;
// 创建椭球表面曲线显示对象
_polyline = new Polyline();
// 设置线宽并关闭深度测试
_polyline.Width = 3;
_polyline.DepthTestEnabled = false;
// 创建参考面显示对象
_plane = new Plane(_window.Context);
_plane.Origin = Vector3D.Zero;
_plane.OutlineWidth = 3;
// 创建主场景
CreateScene();
///////////////////////////////////////////////////////////////////
// 设置主照相机观察方向
_sceneState.Camera.Eye = Vector3D.UnitY;
// 根据视场重新调整相机位置
_sceneState.Camera.ZoomToTarget(2 * _globeShape.MaximumRadius);
}
public unsafe UserControl1()
{
try
{
InitializeComponent();
if (this.DesignMode)
{
return;
}
this.MouseWheel += UserControl1_MouseWheel;
//释放组件
Disposed += OnDispose;
//this.MouseMove += UserControl1_MouseMove ;
GraphicsDeviceOptions options = new GraphicsDeviceOptions(
debug: false,
swapchainDepthFormat: PixelFormat.R16_UNorm,
syncToVerticalBlank: true,
resourceBindingModel: ResourceBindingModel.Improved);
#if DEBUG
options.Debug = true;
#endif
//获取当前窗体的Hwnd
var hwnd = this.Handle;
var p = hwnd.ToPointer();
//这里创建的sld windows消息捕获出现了问题,
//获取运行进程的handle
var instance = Process.GetCurrentProcess().Handle;
_gd = VeldridStartup.CreateVulkanGraphicsDeviceForWin32(options, hwnd, instance, this.Width, this.Height);
_factory = new DisposeCollectorResourceFactory(_gd.ResourceFactory);
_scene = new PongGlobe.Scene.Scene(this.Width, this.Height);
var globeRender = new RayCastedGlobe(_scene);
var shareRender = new ShareRender(_scene);
this.renders.Add(shareRender);
this.renders.Add(globeRender);
//创建完相关对象后注册事件
this.GraphicsDeviceCreated += OnGraphicsDeviceCreated;
this.GraphicsDeviceDestroyed += OnDeviceDestroyed;
this.Rendering += PreDraw;
this.Rendering += Draw;
GraphicsDeviceCreated?.Invoke(_gd, _factory, _gd.MainSwapchain);
_window = new Sdl2Window(hwnd, false);
//创建一个计时器
sw = Stopwatch.StartNew();
previousElapsed = sw.Elapsed.TotalSeconds;
//this.ParentForm.Shown += ParentForm_Shown;
//开始运行
//Run();
//创建一个线程执行run,使用多线程之后便需要考虑不同线程变量同步的问题了，例如isrunning变量的修改需要lock之后再修改，有时可以使用线程安全的集合来处理不同线程的变量交换，
//c#封装了很多，这些都不是问题_coomadList并不是线程安全的，在主线程创建，在子线程使用，这样问题并不大，当时两个子线程同时使用commandLits便可能出现问题
//这里的渲染仍然是单线程的，每个不同的render都可以独开线程并提交渲染任务
_renderTask = Task.Factory.StartNew(() => { Run(); });
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
