long MeasureOccluderOcclusion(SilhouetteOcclusionValidator sov, VoxelizationInput input, List <AABBi> occluderBounds)
{
Mesh mesh = BuildMeshFromBoxes(input, occluderBounds);
RenderableMesh renderable = new RenderableMesh(mesh, true);
long sideCoverage, topCoverage;
sov.ComputeCoverage(renderable, input.Octree.MeshBounds, out sideCoverage, out topCoverage);
renderable.Dispose();
return(sideCoverage + topCoverage);
}
long MeasureOccluderOcclusion(SilhouetteOcclusionValidator sov, VoxelizationInput input, List<AABBi> occluderBounds)
{
Mesh mesh = BuildMeshFromBoxes(input, occluderBounds);
RenderableMesh renderable = new RenderableMesh(mesh, true);
long sideCoverage, topCoverage;
sov.ComputeCoverage(renderable, input.Octree.MeshBounds, out sideCoverage, out topCoverage);
renderable.Dispose();
return sideCoverage + topCoverage;
}
public virtual VoxelizationOutput Generate(VoxelizationInput input, Action<VoxelizationProgress> progress)
{
VoxelizationProgress vp = new VoxelizationProgress();
DateTime start = DateTime.Now;
vp.Status = "Building voxel field from octree";
progress(vp);
VoxelField voxelField = new VoxelField(input.Octree);
Byte fillByte = 2;
float oldPercent = 1.0f;
float newPercent = 1.0f;
List<Occluder> occluders = new List<Occluder>();
vp.Status = "Calculating original mesh silhouette coverage";
progress(vp);
SilhouetteOcclusionValidator sov = new SilhouetteOcclusionValidator(1024, 1024);
long groundSideCoverage, groundTopCoverage;
sov.ComputeCoverage(input.OriginalMesh, input.Octree.MeshBounds, out groundSideCoverage, out groundTopCoverage);
long totalCoverage = groundSideCoverage + groundTopCoverage;
if (totalCoverage == 0)
totalCoverage = 1;
vp.Status = "Fitting boxes into mesh...";
progress(vp);
long oldOcclusion = 0;
do
{
Vector3i densestVoxel = FindHighestDensityVoxel(voxelField);
AABBi occluderBounds;
if (input.Type == OcclusionType.BoxExpansion)
{
occluderBounds = ExpandAndFillBox(voxelField, ref densestVoxel, fillByte);
}
//else if (input.Type == OcclusionType.SimulatedAnnealing)
//{
// occluderBounds = SimulatedAnnealingFill(input, sov, voxelField, ref densestVoxel, fillByte, occluders);
//}
else if (input.Type == OcclusionType.BruteForce)
{
occluderBounds = BruteForceFill(input, sov, voxelField, densestVoxel, fillByte, occluders);
}
else
{
throw new Exception("Unknown occluder generation type!");
}
List<AABBi> relevantOccluders = GetRelevantOccluders(input, occluders);
relevantOccluders.Add(occluderBounds);
long newOcclusion = MeasureOccluderOcclusion(sov, input, relevantOccluders);
Occluder occluder = new Occluder();
occluder.Bounds = occluderBounds;
occluder.DeltaOcclusion = (newOcclusion - oldOcclusion) / (double)totalCoverage;
occluders.Add(occluder);
if (occluder.DeltaOcclusion > input.MinimumOcclusion)
oldOcclusion = newOcclusion;
Debug.WriteLine("Coverage " + occluder.DeltaOcclusion);
Debug.WriteLine("Bounds (" + occluder.Bounds.MinX + "x" + occluder.Bounds.MaxX + " " + occluder.Bounds.MinY + "x" + occluder.Bounds.MaxY + " " + occluder.Bounds.MinZ + "x" + occluder.Bounds.MaxZ + ")");
oldPercent = newPercent;
newPercent = MeasureUnboxedVoxels(voxelField);
Debug.WriteLine("(" + densestVoxel.X + "," + densestVoxel.Y + "," + densestVoxel.Z + ")\tCoverage=" + ((1 - newPercent) * 100) + "%\tDelta=" + ((oldPercent - newPercent) * 100) + "%");
vp.Progress = Math.Min(((1 - newPercent) / input.MinimumVolume), 1.0f);
vp.SilhouetteCoverage = oldOcclusion / (double)totalCoverage;
vp.VolumeCoverage = 1 - newPercent;
vp.Status = String.Format("Occlusion Progress : {0:0.##}%", (100 * vp.Progress));
progress(vp);
} while (newPercent > (1 - input.MinimumVolume));
Mesh mesh = BuildMeshFromBoxes(input, GetRelevantOccluders(input, occluders));
VoxelizationOutput output = new VoxelizationOutput();
if (input.Retriangulate)
{
vp.Status = "Retriangulating occluder mesh";
progress(vp);
Mesh triangulatedMesh = MeshOptimizer.Retriangulate(input, mesh, out output.DebugLines);
if (triangulatedMesh != null)
mesh = triangulatedMesh;
}
vp.Status = "Filtering polygons";
progress(vp);
mesh = PolygonFilter.Filter(input, mesh);
vp.Status = "Generating final occlusion mesh";
progress(vp);
// Prepare the output
output.Octree = input.Octree;
output.TimeTaken = DateTime.Now - start;
output.VolumeCoverage = 1 - newPercent;
output.SilhouetteCoverage = oldOcclusion / (double)totalCoverage;
output.OccluderMesh = new RenderableMesh(mesh, true);
vp.Status = "Cleanup...";
progress(vp);
sov.Dispose();
return output;
}
public virtual VoxelizationOutput Generate(VoxelizationInput input, Action <VoxelizationProgress> progress)
{
VoxelizationProgress vp = new VoxelizationProgress();
DateTime start = DateTime.Now;
vp.Status = "Building voxel field from octree";
progress(vp);
VoxelField voxelField = new VoxelField(input.Octree);
Byte fillByte = 2;
float oldPercent = 1.0f;
float newPercent = 1.0f;
List <Occluder> occluders = new List <Occluder>();
vp.Status = "Calculating original mesh silhouette coverage";
progress(vp);
SilhouetteOcclusionValidator sov = new SilhouetteOcclusionValidator(1024, 1024);
long groundSideCoverage, groundTopCoverage;
sov.ComputeCoverage(input.OriginalMesh, input.Octree.MeshBounds, out groundSideCoverage, out groundTopCoverage);
long totalCoverage = groundSideCoverage + groundTopCoverage;
if (totalCoverage == 0)
{
totalCoverage = 1;
}
vp.Status = "Fitting boxes into mesh...";
progress(vp);
long oldOcclusion = 0;
do
{
Vector3i densestVoxel = FindHighestDensityVoxel(voxelField);
AABBi occluderBounds;
if (input.Type == OcclusionType.BoxExpansion)
{
occluderBounds = ExpandAndFillBox(voxelField, ref densestVoxel, fillByte);
}
//else if (input.Type == OcclusionType.SimulatedAnnealing)
//{
// occluderBounds = SimulatedAnnealingFill(input, sov, voxelField, ref densestVoxel, fillByte, occluders);
//}
else if (input.Type == OcclusionType.BruteForce)
{
occluderBounds = BruteForceFill(input, sov, voxelField, densestVoxel, fillByte, occluders);
}
else
{
throw new Exception("Unknown occluder generation type!");
}
List <AABBi> relevantOccluders = GetRelevantOccluders(input, occluders);
relevantOccluders.Add(occluderBounds);
long newOcclusion = MeasureOccluderOcclusion(sov, input, relevantOccluders);
Occluder occluder = new Occluder();
occluder.Bounds = occluderBounds;
occluder.DeltaOcclusion = (newOcclusion - oldOcclusion) / (double)totalCoverage;
occluders.Add(occluder);
if (occluder.DeltaOcclusion > input.MinimumOcclusion)
{
oldOcclusion = newOcclusion;
}
Debug.WriteLine("Coverage " + occluder.DeltaOcclusion);
Debug.WriteLine("Bounds (" + occluder.Bounds.MinX + "x" + occluder.Bounds.MaxX + " " + occluder.Bounds.MinY + "x" + occluder.Bounds.MaxY + " " + occluder.Bounds.MinZ + "x" + occluder.Bounds.MaxZ + ")");
oldPercent = newPercent;
newPercent = MeasureUnboxedVoxels(voxelField);
Debug.WriteLine("(" + densestVoxel.X + "," + densestVoxel.Y + "," + densestVoxel.Z + ")\tCoverage=" + ((1 - newPercent) * 100) + "%\tDelta=" + ((oldPercent - newPercent) * 100) + "%");
vp.Progress = Math.Min(((1 - newPercent) / input.MinimumVolume), 1.0f);
vp.SilhouetteCoverage = oldOcclusion / (double)totalCoverage;
vp.VolumeCoverage = 1 - newPercent;
vp.Status = String.Format("Occlusion Progress : {0:0.##}%", (100 * vp.Progress));
progress(vp);
} while (newPercent > (1 - input.MinimumVolume));
Mesh mesh = BuildMeshFromBoxes(input, GetRelevantOccluders(input, occluders));
VoxelizationOutput output = new VoxelizationOutput();
if (input.Retriangulate)
{
vp.Status = "Retriangulating occluder mesh";
progress(vp);
Mesh triangulatedMesh = MeshOptimizer.Retriangulate(input, mesh, out output.DebugLines);
if (triangulatedMesh != null)
{
mesh = triangulatedMesh;
}
}
vp.Status = "Filtering polygons";
progress(vp);
mesh = PolygonFilter.Filter(input, mesh);
vp.Status = "Generating final occlusion mesh";
progress(vp);
// Prepare the output
output.Octree = input.Octree;
output.TimeTaken = DateTime.Now - start;
output.VolumeCoverage = 1 - newPercent;
output.SilhouetteCoverage = oldOcclusion / (double)totalCoverage;
output.OccluderMesh = new RenderableMesh(mesh, true);
vp.Status = "Cleanup...";
progress(vp);
sov.Dispose();
return(output);
}
