public TerrainRayCasting()
{
_window = Device.CreateWindow(800, 600, "Chapter 11: Terrain Ray Casting");
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_window.Keyboard.KeyDown += OnKeyDown;
_sceneState = new SceneState();
_sceneState.Camera.PerspectiveFarPlaneDistance = 4096;
_clearState = new ClearState();
///////////////////////////////////////////////////////////////////
TerrainTile terrainTile = TerrainTile.FromBitmap(new Bitmap(@"ps-e.lg.png"));
_tile = new RayCastedTerrainTile(terrainTile);
_tile.HeightExaggeration = 30;
///////////////////////////////////////////////////////////////////
double tileRadius = Math.Max(terrainTile.Resolution.X, terrainTile.Resolution.Y) * 0.5;
_camera = new CameraLookAtPoint(_sceneState.Camera, _window, Ellipsoid.UnitSphere);
_camera.CenterPoint = new Vector3D(terrainTile.Resolution.X * 0.5, terrainTile.Resolution.Y * 0.5, 0.0);
_camera.MinimumRotateRate = 1.0;
_camera.MaximumRotateRate = 1.0;
_camera.RotateRateRangeAdjustment = 0.0;
_camera.RotateFactor = 0.0;
_sceneState.Camera.ZoomToTarget(tileRadius);
///////////////////////////////////////////////////////////////////
_hudFont = new Font("Arial", 16);
_hud = new HeadsUpDisplay();
_hud.Color = Color.Black;
UpdateHUD();
}
public EllipsoidSurfaceNormals()
{
_globeShape = new Ellipsoid(1, 1, _semiMinorAxis);
_window = Device.CreateWindow(800, 600, "Chapter 2: Ellipsoid Surface Normals");
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_window.Keyboard.KeyDown += OnKeyDown;
_sceneState = new SceneState();
_camera = new CameraLookAtPoint(_sceneState.Camera, _window, _globeShape);
_instructions = new HeadsUpDisplay();
_instructions.Texture = Device.CreateTexture2D(
Device.CreateBitmapFromText("Up - Increase semi-minor axis\nDown - Decrease semi-minor axis",
new Font("Arial", 24)),
TextureFormat.RedGreenBlueAlpha8, false);
_instructions.Color = Color.Black;
_clearState = new ClearState();
CreateScene();
///////////////////////////////////////////////////////////////////
_sceneState.Camera.Eye = Vector3D.UnitY;
_sceneState.Camera.ZoomToTarget(2 * _globeShape.MaximumRadius);
}
public DepthBufferPrecision()
{
_globeShape = Ellipsoid.Wgs84;
_nearDistance = 1;
_cubeRootFarDistance = 300;
_window = Device.CreateWindow(800, 600, "Chapter 6: Depth Buffer Precision");
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_window.Keyboard.KeyUp += OnKeyUp;
_window.Keyboard.KeyDown += OnKeyDown;
_sceneState = new SceneState();
_sceneState.DiffuseIntensity = 0.45f;
_sceneState.SpecularIntensity = 0.05f;
_sceneState.AmbientIntensity = 0.5f;
_camera = new CameraLookAtPoint(_sceneState.Camera, _window, _globeShape);
_sceneState.Camera.ZoomToTarget(_globeShape.MaximumRadius);
///////////////////////////////////////////////////////////////////
_globe = new TessellatedGlobe();
_globe.Shape = _globeShape;
_globe.NumberOfSlicePartitions = 64;
_globe.NumberOfStackPartitions = 32;
_globe.Texture = Device.CreateTexture2D(new Bitmap("world_topo_bathy_200411_3x5400x2700.jpg"), TextureFormat.RedGreenBlue8, false);
_globe.Textured = true;
_plane = new Plane(_window.Context);
_plane.XAxis = 0.6 * _globeShape.MaximumRadius * Vector3D.UnitX;
_plane.YAxis = 0.6 * _globeShape.MinimumRadius * Vector3D.UnitZ;
_plane.OutlineWidth = 3;
_cubeRootPlaneHeight = 100.0;
UpdatePlaneOrigin();
_viewportQuad = new ViewportQuad(_window.Context, null);
_framebuffer = _window.Context.CreateFramebuffer();
_depthFormatIndex = 1;
_depthTestLess = true;
_logarithmicDepthConstant = 1;
UpdatePlanesAndDepthTests();
_clearState = new ClearState();
///////////////////////////////////////////////////////////////////
_hudFont = new Font("Arial", 16);
_hud = new HeadsUpDisplay();
_hud.Color = Color.Blue;
UpdateHUD();
}
public Jitter()
{
_window = Device.CreateWindow(800, 600, "Chapter 5: Jitter");
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_window.Keyboard.KeyUp += OnKeyUp;
_sceneState = new SceneState();
_clearState = new ClearState();
_hudFont = new Font("Arial", 16);
_hud = new HeadsUpDisplay();
_hud.Color = Color.Black;
CreateCamera();
CreateAlgorithm();
}
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 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);
}
private void myButton1_Click(object sender, EventArgs e)
{
_window = Device.CreateWindow(800, 600, "Chapter 13: Clipmap Terrain on a Globe");
_ellipsoid = Ellipsoid.Wgs84;
WorldWindTerrainSource terrainSource = new WorldWindTerrainSource();
GMapRestImagery imagery = new GMapRestImagery();
_clipmap = new GlobeClipmapTerrain(_window.Context, terrainSource, imagery, _ellipsoid, 511);
_clipmap.HeightExaggeration = 1.0f;
IList<GridResolution> gridResolutions = new List<GridResolution>();
gridResolutions.Add(new GridResolution(
new Interval(0, 1000000, IntervalEndpoint.Closed, IntervalEndpoint.Open),
new Vector2D(0.005, 0.005)));
gridResolutions.Add(new GridResolution(
new Interval(1000000, 2000000, IntervalEndpoint.Closed, IntervalEndpoint.Open),
new Vector2D(0.01, 0.01)));
gridResolutions.Add(new GridResolution(
new Interval(2000000, 20000000, IntervalEndpoint.Closed, IntervalEndpoint.Open),
new Vector2D(0.05, 0.05)));
gridResolutions.Add(new GridResolution(
new Interval(20000000, double.MaxValue, IntervalEndpoint.Closed, IntervalEndpoint.Open),
new Vector2D(0.1, 0.1)));
_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);
//_globe.GridResolutions = new GridResolutionCollection(gridResolutions);
_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;
//_flyCamera = new CameraFly(_sceneState.Camera, _window);
//_flyCamera.MovementRate = 1200.0;
//_flyCamera.InputEnabled = true;
_sceneState.Camera.Target = new Vector3D(115, -35, 100.0);
_window.Run(30);
}
public LinesOnTerrain()
{
_window = Device.CreateWindow(800, 600, "Research: Lines on Terrain");
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_window.Keyboard.KeyDown += OnKeyDown;
_sceneState = new SceneState();
_sceneState.Camera.PerspectiveFarPlaneDistance = 4096;
_sceneState.Camera.PerspectiveNearPlaneDistance = 10;
_instructions = new HeadsUpDisplay();
_instructions.Texture = Device.CreateTexture2D(
Device.CreateBitmapFromText(
"u - Use silhouette\ns - Show silhouette\n",
new Font("Arial", 24)),
TextureFormat.RedGreenBlueAlpha8, false);
_instructions.Color = Color.LightBlue;
///////////////////////////////////////////////////////////////////
TerrainTile terrainTile = TerrainTile.FromBitmap(new Bitmap(@"ps-e.lg.png"));
_tile = new TriangleMeshTerrainTile(_window.Context, terrainTile);
_tile.HeightExaggeration = 30.0f;
///////////////////////////////////////////////////////////////////
double tileRadius = Math.Max(terrainTile.Resolution.X, terrainTile.Resolution.Y) * 0.5;
_camera = new CameraLookAtPoint(_sceneState.Camera, _window, Ellipsoid.UnitSphere);
_camera.CenterPoint = new Vector3D(terrainTile.Resolution.X * 0.5, terrainTile.Resolution.Y * 0.5, 0.0);
_sceneState.Camera.ZoomToTarget(tileRadius);
_sceneState.Camera.Eye = new Vector3D(_xPos, 256, 0);
//
// Positions
//
IList<Vector3D> positions = new List<Vector3D>();
double temp = 1.2 * _tile.HeightExaggeration;
positions.Add(new Vector3D(0.0, 0.0, -temp));
positions.Add(new Vector3D(0.0, 0.0, temp));
positions.Add(new Vector3D(100.0, 100.0, -temp));
positions.Add(new Vector3D(100.0, 100.0, temp));
positions.Add(new Vector3D(200.0, 100.0, -temp));
positions.Add(new Vector3D(200.0, 100.0, temp));
positions.Add(new Vector3D(256.0, 256.0, -temp));
positions.Add(new Vector3D(256.0, 256.0, temp));
positions.Add(new Vector3D(512.0, 512.0, -temp));
positions.Add(new Vector3D(512.0, 512.0, temp));
//
// junk
_polylineOnTerrain = new PolylineOnTerrain();
_polylineOnTerrain.Set(_window.Context, positions);
_clearState = new ClearState();
// junk
string fs =
@"#version 330
uniform sampler2D og_texture0;
in vec2 fsTextureCoordinates;
out vec4 fragmentColor;
void main()
{
if (texture(og_texture0, fsTextureCoordinates).r == 0.0)
{
fragmentColor = vec4(0.0, 0.0, 0.0, 1.0);
}
else
{
discard;
}
}";
_viewportQuad = new ViewportQuad(_window.Context, fs);
}
public VectorData()
{
Ellipsoid globeShape = Ellipsoid.ScaledWgs84;
_window = Device.CreateWindow(800, 600, "Chapter 7: Vector Data");
_window.Resize += OnResize;
_window.RenderFrame += OnRenderFrame;
_window.Keyboard.KeyDown += OnKeyDown;
_window.Keyboard.KeyUp += OnKeyUp;
_sceneState = new SceneState();
_camera = new CameraLookAtPoint(_sceneState.Camera, _window, globeShape);
Context context = _window.Context;
_framebuffer = context.CreateFramebuffer();
_clearBlack = new ClearState();
_clearBlack.Color = Color.Black;
_clearWhite = new ClearState();
_clearWhite.Color = Color.White;
_quad = new DayNightViewportQuad(context);
_globe = new DayNightGlobe(context);
_globe.Shape = globeShape;
_globe.UseAverageDepth = true;
_globe.DayTexture = Device.CreateTexture2D(new Bitmap("NE2_50M_SR_W_4096.jpg"), TextureFormat.RedGreenBlue8, false);
_globe.NightTexture = Device.CreateTexture2D(new Bitmap("land_ocean_ice_lights_2048.jpg"), TextureFormat.RedGreenBlue8, false);
_countries = new ShapefileRenderer("110m_admin_0_countries.shp", context, globeShape,
new ShapefileAppearance()
{
PolylineWidth = 1.0,
PolylineOutlineWidth = 1.0
});
_states = new ShapefileRenderer("110m_admin_1_states_provinces_lines_shp.shp", context, globeShape,
new ShapefileAppearance()
{
PolylineWidth = 1.0,
PolylineOutlineWidth = 1.0
});
_rivers = new ShapefileRenderer("50m-rivers-lake-centerlines.shp", context, globeShape,
new ShapefileAppearance()
{
PolylineColor = Color.LightBlue,
PolylineOutlineColor = Color.LightBlue,
PolylineWidth = 1.0,
PolylineOutlineWidth = 0.0
});
_populatedPlaces = new ShapefileRenderer("110m_populated_places_simple.shp", context, globeShape,
new ShapefileAppearance() { Bitmap = new Bitmap("032.png") });
_airports = new ShapefileRenderer("airprtx020.shp", context, globeShape,
new ShapefileAppearance() { Bitmap = new Bitmap("car-red.png") });
_amtrakStations = new ShapefileRenderer("amtrakx020.shp", context, globeShape,
new ShapefileAppearance() { Bitmap = new Bitmap("paper-plane--arrow.png") });
_hudFont = new Font("Arial", 16);
_hud = new HeadsUpDisplay();
_hud.Color = Color.Blue;
_showVectorData = true;
_sceneState.DiffuseIntensity = 0.5f;
_sceneState.SpecularIntensity = 0.1f;
_sceneState.AmbientIntensity = 0.4f;
_sceneState.Camera.ZoomToTarget(globeShape.MaximumRadius);
UpdateHUD();
}
