private void InitializeRequestThreads(Context context, RasterDataDetails details, ClipmapLevel clipmapLevelZero, RasterLevel rasterLevelZero)
{
details.WorkerWindow = Device.CreateWindow(1, 1);
context.MakeCurrent();
#if !SingleThreaded
Thread requestThread = new Thread(RequestThreadEntryPoint);
requestThread.IsBackground = true;
requestThread.Start(details);
#endif
// Preload the entire world at level 0
RasterTileRegion[] regions = rasterLevelZero.GetTilesInExtent(0, 0, rasterLevelZero.LongitudePosts - 1, rasterLevelZero.LatitudePosts - 1);
foreach (RasterTileRegion region in regions)
{
RequestTileLoad(details, clipmapLevelZero, region.Tile);
}
}
public EsriRestImagery(Uri baseUri)
{
_baseUri = baseUri;
_levels = new RasterLevel[NumberOfLevels];
_levelsCollection = new RasterLevelCollection(_levels);
double deltaLongitude = LevelZeroDeltaLongitudeDegrees;
double deltaLatitude = LevelZeroDeltaLatitudeDegrees;
for (int i = 0; i < _levels.Length; ++i)
{
int longitudePosts = (int)Math.Round(360.0 / deltaLongitude) * TileLongitudePosts + 1;
int latitudePosts = (int)Math.Round(180.0 / deltaLatitude) * TileLatitudePosts + 1;
_levels[i] = new RasterLevel(this, i, _extent, longitudePosts, latitudePosts, TileLongitudePosts, TileLatitudePosts);
deltaLongitude /= 2.0;
deltaLatitude /= 2.0;
}
}
public WorldWindTerrainSource(Uri baseUri)
{
_baseUri = baseUri;
_levels = new RasterLevel[NumberOfLevels];
_levelsCollection = new RasterLevelCollection(_levels);
double deltaLongitude = LevelZeroDeltaLongitudeDegrees;
double deltaLatitude = LevelZeroDeltaLatitudeDegrees;
for (int i = 0; i < _levels.Length; ++i)
{
int longitudePosts = (int)Math.Round(360.0 / deltaLongitude) * TileLongitudePosts + 1;
int latitudePosts = (int)Math.Round(180.0 / deltaLatitude) * TileLatitudePosts + 1;
_levels[i] = new RasterLevel(this, i, _extent, longitudePosts, latitudePosts, TileLongitudePosts, TileLatitudePosts);
deltaLongitude /= 2.0;
deltaLatitude /= 2.0;
}
}
public GMapRestImagery()
{
//_baseUri = baseUri;
_levels = new RasterLevel[NumberOfLevels];
_levelsCollection = new RasterLevelCollection(_levels);
double deltaLongitude = LevelZeroDeltaLongitudeDegrees;
double deltaLatitude = LevelZeroDeltaLatitudeDegrees;
for (int i = 0; i < _levels.Length; ++i)
{
int longitudePosts = (int)Math.Round(360.0 / deltaLongitude) * TileLongitudePosts + 1;
int latitudePosts = (int)Math.Round(180 / deltaLatitude) * TileLatitudePosts + 1;
_levels[i] = new RasterLevel(this, i, _extent, longitudePosts, latitudePosts, TileLongitudePosts, TileLatitudePosts);
deltaLongitude /= 2.0;
deltaLatitude /= 2.0;
}
MainMap = new GMapControl();
MainMap.MapType = GMap.NET.MapType.GoogleSatellite;
MainMap.CacheLocation = Path.GetDirectoryName(Application.ExecutablePath) + "/gmapcache/";
}
private void ApplyNewTile(Context context, RasterDataDetails details, ClipmapLevel level, RasterTile tile)
{
ClipmapLevel.Extent nextExtent = details.Type == RasterType.Terrain ? level.NextExtent : level.NextImageryExtent;
RasterLevel rasterLevel = details.Type == RasterType.Terrain ? level.Terrain : level.Imagery;
ClipmapUpdate entireLevel = new ClipmapUpdate(
level,
nextExtent.West,
nextExtent.South,
nextExtent.East,
nextExtent.North);
ClipmapUpdate thisTile = new ClipmapUpdate(
level,
tile.West - 1,
tile.South - 1,
tile.East + 1,
tile.North + 1);
ClipmapUpdate intersection = IntersectUpdates(entireLevel, thisTile);
if (intersection.Width > 0 && intersection.Height > 0)
{
Update(context, intersection, level, details, rasterLevel);
// Recurse on child tiles if they're NOT loaded. Unloaded children will use data from this tile.
ClipmapLevel finer = level.FinerLevel;
if (finer != null)
{
ApplyIfNotLoaded(context, details, finer, tile.SouthwestChild);
ApplyIfNotLoaded(context, details, finer, tile.SoutheastChild);
ApplyIfNotLoaded(context, details, finer, tile.NorthwestChild);
ApplyIfNotLoaded(context, details, finer, tile.NortheastChild);
}
}
}
private void InitializeRequestThreads(Context context, RasterDataDetails details, ClipmapLevel clipmapLevelZero, RasterLevel rasterLevelZero)
{
details.WorkerWindow = Device.CreateWindow(1, 1);
context.MakeCurrent();
#if !SingleThreaded
Thread requestThread = new Thread(RequestThreadEntryPoint);
requestThread.IsBackground = true;
requestThread.Start(details);
#endif
// Preload the entire world at level 0
RasterTileRegion[] regions = rasterLevelZero.GetTilesInExtent(0, 0, rasterLevelZero.LongitudePosts - 1, rasterLevelZero.LatitudePosts - 1);
foreach (RasterTileRegion region in regions)
{
RequestTileLoad(details, clipmapLevelZero, region.Tile);
}
}
private void Update(Context context, ClipmapUpdate update, ClipmapLevel level, RasterDataDetails details, RasterLevel rasterLevel)
{
ClipmapUpdate[] updates = SplitUpdateToAvoidWrapping(update, details);
foreach (ClipmapUpdate nonWrappingUpdate in updates)
{
RasterTileRegion[] tileRegions = rasterLevel.GetTilesInExtent(nonWrappingUpdate.West, nonWrappingUpdate.South, nonWrappingUpdate.East, nonWrappingUpdate.North);
foreach (RasterTileRegion region in tileRegions)
{
Texture2D tileTexture;
bool loaded = details.LoadedTiles.TryGetValue(region.Tile.Identifier, out tileTexture);
if (loaded)
{
RenderTileToLevelTexture(context, level, details, region, tileTexture);
}
else
{
UpsampleTileData(context, level, details, region);
}
}
}
if (details.Type == RasterType.Terrain)
{
// Normals at edges are incorrect, so include a one-post buffer around the update region
// when updating normals in order to update normals that were previously at the edge.
ClipmapUpdate updateWithBuffer = update.AddBufferWithinLevelNextExtent();
ClipmapUpdate[] normalUpdates = SplitUpdateToAvoidWrapping(updateWithBuffer, details);
foreach (ClipmapUpdate normalUpdate in normalUpdates)
{
UpdateNormals(context, normalUpdate);
}
}
}
private void RequestTileResidency(Context context, ClipmapLevel level, RasterDataDetails details, RasterLevel rasterLevel, ClipmapLevel.Extent nextExtent)
{
RasterTileRegion[] tileRegions = rasterLevel.GetTilesInExtent(nextExtent.West, nextExtent.South, nextExtent.East, nextExtent.North);
foreach (RasterTileRegion region in tileRegions)
{
if (!details.LoadedTiles.ContainsKey(region.Tile.Identifier))
{
RequestTileLoad(details, level, region.Tile);
}
}
}
private void Update(Context context, ClipmapUpdate update, ClipmapLevel level, RasterDataDetails details, RasterLevel rasterLevel)
{
ClipmapUpdate[] updates = SplitUpdateToAvoidWrapping(update, details);
foreach (ClipmapUpdate nonWrappingUpdate in updates)
{
RasterTileRegion[] tileRegions = rasterLevel.GetTilesInExtent(nonWrappingUpdate.West, nonWrappingUpdate.South, nonWrappingUpdate.East, nonWrappingUpdate.North);
foreach (RasterTileRegion region in tileRegions)
{
Texture2D tileTexture;
bool loaded = details.LoadedTiles.TryGetValue(region.Tile.Identifier, out tileTexture);
if (loaded)
{
RenderTileToLevelTexture(context, level, details, region, tileTexture);
}
else
{
UpsampleTileData(context, level, details, region);
}
}
}
if (details.Type == RasterType.Terrain)
{
// Normals at edges are incorrect, so include a one-post buffer around the update region
// when updating normals in order to update normals that were previously at the edge.
ClipmapUpdate updateWithBuffer = update.AddBufferWithinLevelNextExtent();
ClipmapUpdate[] normalUpdates = SplitUpdateToAvoidWrapping(updateWithBuffer, details);
foreach (ClipmapUpdate normalUpdate in normalUpdates)
{
UpdateNormals(context, normalUpdate);
}
}
}
private void RequestTileResidency(Context context, ClipmapLevel level, RasterDataDetails details, RasterLevel rasterLevel, ClipmapLevel.Extent nextExtent)
{
RasterTileRegion[] tileRegions = rasterLevel.GetTilesInExtent(nextExtent.West, nextExtent.South, nextExtent.East, nextExtent.North);
foreach (RasterTileRegion region in tileRegions)
{
if (!details.LoadedTiles.ContainsKey(region.Tile.Identifier))
{
RequestTileLoad(details, level, region.Tile);
}
}
}
public GlobeClipmapTerrain(Context context, RasterSource terrainSource, EsriRestImagery imagery, Ellipsoid ellipsoid, int clipmapPosts)
{
_terrainSource = terrainSource;
_ellipsoid = ellipsoid;
_clipmapPosts = clipmapPosts;
_clipmapSegments = _clipmapPosts - 1;
int clipmapLevels = _terrainSource.Levels.Count;
_clipmapLevels = new ClipmapLevel[clipmapLevels];
for (int i = 0; i < _clipmapLevels.Length; ++i)
{
_clipmapLevels[i] = new ClipmapLevel();
}
for (int i = 0; i < _clipmapLevels.Length; ++i)
{
RasterLevel terrainLevel = _terrainSource.Levels[i];
_clipmapLevels[i].Terrain = terrainLevel;
_clipmapLevels[i].HeightTexture = Device.CreateTexture2D(new Texture2DDescription(_clipmapPosts, _clipmapPosts, TextureFormat.Red32f));
_clipmapLevels[i].NormalTexture = Device.CreateTexture2D(new Texture2DDescription(_clipmapPosts, _clipmapPosts, TextureFormat.RedGreenBlue32f));
_clipmapLevels[i].CoarserLevel = i == 0 ? null : _clipmapLevels[i - 1];
_clipmapLevels[i].FinerLevel = i == _clipmapLevels.Length - 1 ? null : _clipmapLevels[i + 1];
// Aim for roughly one imagery texel per geometry texel.
// Find the first imagery level that meets our resolution needs.
double longitudeResRequired = terrainLevel.PostDeltaLongitude;
double latitudeResRequired = terrainLevel.PostDeltaLatitude;
RasterLevel imageryLevel = null;
for (int j = 0; j < imagery.Levels.Count; ++j)
{
imageryLevel = imagery.Levels[j];
if (imageryLevel.PostDeltaLongitude <= longitudeResRequired &&
imageryLevel.PostDeltaLatitude <= latitudeResRequired)
{
break;
}
}
_clipmapLevels[i].Imagery = imageryLevel;
_clipmapLevels[i].ImageryWidth = (int)Math.Ceiling(_clipmapPosts * terrainLevel.PostDeltaLongitude / imageryLevel.PostDeltaLongitude);
_clipmapLevels[i].ImageryHeight = (int)Math.Ceiling(_clipmapPosts * terrainLevel.PostDeltaLatitude / imageryLevel.PostDeltaLatitude);
_clipmapLevels[i].ImageryTexture = Device.CreateTexture2D(new Texture2DDescription(_clipmapLevels[i].ImageryWidth, _clipmapLevels[i].ImageryHeight, TextureFormat.RedGreenBlue8, false));
}
_shaderProgram = Device.CreateShaderProgram(
EmbeddedResources.GetText("OpenGlobe.Scene.Terrain.ClipmapTerrain.GlobeClipmapVS.glsl"),
EmbeddedResources.GetText("OpenGlobe.Scene.Terrain.ClipmapTerrain.GlobeClipmapFS.glsl"));
_fillPatchPosts = (clipmapPosts + 1) / 4; // M
_fillPatchSegments = _fillPatchPosts - 1;
// Create the MxM block used to fill the ring and the field.
Mesh fieldBlockMesh = RectangleTessellator.Compute(
new RectangleD(new Vector2D(0.0, 0.0), new Vector2D(_fillPatchSegments, _fillPatchSegments)),
_fillPatchSegments, _fillPatchSegments);
_fillPatch = context.CreateVertexArray(fieldBlockMesh, _shaderProgram.VertexAttributes, BufferHint.StaticDraw);
// Create the Mx3 block used to fill the space between the MxM blocks in the ring
Mesh ringFixupHorizontalMesh = RectangleTessellator.Compute(
new RectangleD(new Vector2D(0.0, 0.0), new Vector2D(_fillPatchSegments, 2.0)),
_fillPatchSegments, 2);
_horizontalFixupPatch = context.CreateVertexArray(ringFixupHorizontalMesh, _shaderProgram.VertexAttributes, BufferHint.StaticDraw);
// Create the 3xM block used to fill the space between the MxM blocks in the ring
Mesh ringFixupVerticalMesh = RectangleTessellator.Compute(
new RectangleD(new Vector2D(0.0, 0.0), new Vector2D(2.0, _fillPatchSegments)),
2, _fillPatchSegments);
_verticalFixupPatch = context.CreateVertexArray(ringFixupVerticalMesh, _shaderProgram.VertexAttributes, BufferHint.StaticDraw);
Mesh offsetStripHorizontalMesh = RectangleTessellator.Compute(
new RectangleD(new Vector2D(0.0, 0.0), new Vector2D(2 * _fillPatchPosts, 1.0)),
2 * _fillPatchPosts, 1);
_horizontalOffsetPatch = context.CreateVertexArray(offsetStripHorizontalMesh, _shaderProgram.VertexAttributes, BufferHint.StaticDraw);
Mesh offsetStripVerticalMesh = RectangleTessellator.Compute(
new RectangleD(new Vector2D(0.0, 0.0), new Vector2D(1.0, 2 * _fillPatchPosts - 1)),
1, 2 * _fillPatchPosts - 1);
_verticalOffsetPatch = context.CreateVertexArray(offsetStripVerticalMesh, _shaderProgram.VertexAttributes, BufferHint.StaticDraw);
Mesh centerMesh = RectangleTessellator.Compute(new RectangleD(new Vector2D(0.0, 0.0), new Vector2D(2.0, 2.0)), 2, 2);
_centerPatch = context.CreateVertexArray(centerMesh, _shaderProgram.VertexAttributes, BufferHint.StaticDraw);
Mesh degenerateTriangleMesh = CreateDegenerateTriangleMesh();
_degenerateTrianglePatch = context.CreateVertexArray(degenerateTriangleMesh, _shaderProgram.VertexAttributes, BufferHint.StaticDraw);
_patchOriginInClippedLevel = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_patchOriginInClippedLevel"];
_levelScaleFactor = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_levelScaleFactor"];
_levelZeroWorldScaleFactor = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_levelZeroWorldScaleFactor"];
_levelOffsetFromWorldOrigin = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_levelOffsetFromWorldOrigin"];
_heightExaggeration = (Uniform <float>)_shaderProgram.Uniforms["u_heightExaggeration"];
_viewPosInClippedLevel = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_viewPosInClippedLevel"];
_fineLevelOriginInCoarse = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_fineLevelOriginInCoarse"];
_unblendedRegionSize = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_unblendedRegionSize"];
_oneOverBlendedRegionSize = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_oneOverBlendedRegionSize"];
_fineTextureOrigin = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_fineTextureOrigin"];
_showBlendRegions = (Uniform <bool>)_shaderProgram.Uniforms["u_showBlendRegions"];
_useBlendRegions = (Uniform <bool>)_shaderProgram.Uniforms["u_useBlendRegions"];
_oneOverClipmapSize = (Uniform <float>)_shaderProgram.Uniforms["u_oneOverClipmapSize"];
_color = (Uniform <Vector3F>)_shaderProgram.Uniforms["u_color"];
_blendRegionColor = (Uniform <Vector3F>)_shaderProgram.Uniforms["u_blendRegionColor"];
_terrainToImageryResolutionRatio = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_terrainToImageryResolutionRatio"];
_terrainOffsetInImagery = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_terrainOffsetInImagery"];
_oneOverImagerySize = (Uniform <Vector2F>)_shaderProgram.Uniforms["u_oneOverImagerySize"];
_showImagery = (Uniform <bool>)_shaderProgram.Uniforms["u_showImagery"];
_lighting = (Uniform <bool>)_shaderProgram.Uniforms["u_shade"];
((Uniform <Vector3F>)_shaderProgram.Uniforms["u_globeRadiiSquared"]).Value =
ellipsoid.RadiiSquared.ToVector3F();
_renderState = new RenderState();
_renderState.FacetCulling.FrontFaceWindingOrder = fieldBlockMesh.FrontFaceWindingOrder;
_primitiveType = fieldBlockMesh.PrimitiveType;
float oneOverBlendedRegionSize = (float)(10.0 / _clipmapPosts);
_oneOverBlendedRegionSize.Value = new Vector2F(oneOverBlendedRegionSize, oneOverBlendedRegionSize);
float unblendedRegionSize = (float)(_clipmapSegments / 2 - _clipmapPosts / 10.0 - 1);
_unblendedRegionSize.Value = new Vector2F(unblendedRegionSize, unblendedRegionSize);
_useBlendRegions.Value = true;
_showImagery.Value = true;
_oneOverClipmapSize.Value = 1.0f / clipmapPosts;
_updater = new ClipmapUpdater(context, _clipmapLevels);
HeightExaggeration = 0.00001f;
}
