private void OnBackgroundDoWork(object sender, DoWorkEventArgs e)
{
PointCloudTileSource tileSource = e.Argument as PointCloudTileSource;
Jacere.Core.Geometry.Extent3D extent = tileSource.Extent;
m_overviewTextureBrush = new ImageBrush(tileSource.Preview.Image);
m_overviewTextureBrush.ViewportUnits = BrushMappingMode.Absolute;
m_overviewTextureBrush.Freeze();
m_overviewMaterial = new DiffuseMaterial(m_overviewTextureBrush);
m_overviewMaterial.Freeze();
if (tileSource != null)
{
previewImageGrid.MouseMove -= OnViewportGridMouseMove;
Action<string> logAction = value => Context.WriteLine(value);
m_progressManager = new BackgroundWorkerProgressManager(m_backgroundWorker, e, logAction, null);
m_gridDimensionLowRes = (ushort)Math.Sqrt(VERTEX_COUNT_FAST / tileSource.TileSet.ValidTileCount);
//m_gridDimensionHighRes = (ushort)Math.Sqrt(VERTEX_COUNT_LARGE / tileSource.TileSet.ValidTileCount);
m_gridDimensionHighRes = (ushort)(Math.Sqrt(tileSource.TileSet.Density.MedianTileCount) / 3);
//m_gridDimensionLowRes = (ushort)20;
//m_gridDimensionHighRes = (ushort)40;
Jacere.Core.Geometry.Point3D centerOfMass = tileSource.CenterOfMass;
m_overallCenteredExtent = new Rect3D(extent.MinX - extent.MidpointX, extent.MinY - extent.MidpointY, extent.MinZ - centerOfMass.Z, extent.RangeX, extent.RangeY, extent.RangeZ);
// load tiles
KeyValuePair<Grid<int>, Grid<float>> gridsLowRes = tileSource.GenerateGrid(m_gridDimensionLowRes);
m_gridLowRes = gridsLowRes.Value;
m_quantizedGridLowRes = gridsLowRes.Key;
KeyValuePair<Grid<int>, Grid<float>> gridsHighRes = tileSource.GenerateGrid(m_gridDimensionHighRes);
m_gridHighRes = gridsHighRes.Value;
m_quantizedGridHighRes = gridsHighRes.Key;
foreach (PointCloudTile tile in tileSource.TileSet)
{
tileSource.LoadTileGrid(tile, m_buffer, m_gridLowRes, m_quantizedGridLowRes);
if (ENABLE_HEIGHT_EXAGGERATION)
m_gridLowRes.Multiply(m_heightExaggerationFactor, (float)centerOfMass.Z);
Jacere.Core.Geometry.Extent3D tileExtent = tile.Extent;
MeshGeometry3D mesh = tileSource.GenerateMesh(m_gridLowRes, tileExtent);
DiffuseMaterial material = new DiffuseMaterial();
if (USE_LOW_RES_TEXTURE)
{
material.Brush = m_overviewTextureBrush;
mesh.TextureCoordinates = MeshUtils.GeneratePlanarTextureCoordinates(mesh, m_overallCenteredExtent, MathUtils.ZAxis);
}
else
{
material.Brush = m_solidBrush;
}
material.Freeze();
GeometryModel3D geometryModel = new GeometryModel3D(mesh, material);
geometryModel.Freeze();
TileInfo3D tileInfo = new TileInfo3D(tile, geometryModel, m_gridLowRes);
m_tileInfo.Add(tile, tileInfo);
// add mappings
m_meshTileMap.Add(geometryModel, tile);
//m_lowResMap.Add(tile, geometryModel);
if (!m_progressManager.Update(tile, geometryModel))
break;
}
//// test
//foreach (double level in new double[] { centerOfMass.Z })
//{
// Grid<float> grid0 = new Grid<float>(20, 20, extent, false);
// grid0.FillVal = (float)level;
// grid0.Reset();
// grid0.FillVal = float.MinValue;
// MeshGeometry3D mesh0 = tileSource.GenerateMesh(grid0, extent);
// DiffuseMaterial material0 = new DiffuseMaterial(m_solidBrush);
// material0.Freeze();
// GeometryModel3D geometryModel0 = new GeometryModel3D(mesh0, material0);
// geometryModel0.Freeze();
// m_progressManager.Update(1.0f, geometryModel0);
//}
if (ENABLE_STITCHING)
{
int validStitchingIndex = 0;
foreach (PointCloudTile tile in tileSource.TileSet)
{
TileInfo3D tileInfo = m_tileInfo[tile];
Model3DGroup stitchingGroup = GenerateTileStitching(tileSource, tileInfo);
if (stitchingGroup != null)
++validStitchingIndex;
if (!m_progressManager.Update(1.0f, stitchingGroup))
break;
}
}
}
}