SurfaceAnalysis Namespace Reference

Classes
struct	BadHeights
struct	Hole
struct	Report
struct	Seam
struct	ViewState

Enumerations
enum class	SeamCause { PendingFlat , DegradedFlat , LodTJunction , SameZoomMismatch }
enum class	HoleCause { NoPatch , SuppressedCovered , ElevatedTerrainCulled }

Functions
QString	seamCauseDescription (SeamCause cause)
QString	holeCauseDescription (HoleCause cause)
Report	analyze (const QList< SurfaceModel::Patch > &patches, int gridSize, const ViewState &view, double minStep)

Detailed Description

Diagnostic pass over the rendered patch set: finds anything visibly wrong with the surface and classifies why it exists. Checks:

• coverage holes: visible screen points with no rendered geometry under them
• camera below the rendered surface (view clips into the mesh)
• seams: height discontinuities ("cliffs") along patch boundaries
• non-finite height data (NaN/inf vertices)

Enumeration Type Documentation

HoleCause

enum class SurfaceAnalysis::HoleCause

strong

Enumerator
NoPatch	no resident patch covers the visible point at all
SuppressedCovered	only a covered (render-suppressed) patch spans the point
ElevatedTerrainCulled	sightline passes below nearby terrain height over unrendered ground

Definition at line 27 of file SurfaceAnalysis.h.

SeamCause

enum class SurfaceAnalysis::SeamCause

strong

Enumerator
PendingFlat	a patch renders flat because its heights are still loading
DegradedFlat	a patch renders flat because terrain fetches failed (retries exhausted)
LodTJunction	fine edge vertices vs the coarse neighbor's interpolated edge
SameZoomMismatch	same zoom, same scale: unexpected sampling inconsistency

Definition at line 19 of file SurfaceAnalysis.h.

Function Documentation

analyze()

Report SurfaceAnalysis::analyze	(	const QList< SurfaceModel::Patch > &	patches,
		int	gridSize,
		const ViewState &	view,
		double	minStep = 1.0
	)

Analyze the given patch set (SurfaceModel::patches()). Covered patches do not render and cannot close holes; seams below minStep meters are ignored.

Definition at line 373 of file SurfaceAnalysis.cc.

References SurfaceAnalysis::Report::cameraBelowSurface, SurfaceAnalysis::Report::cameraChecked, SurfaceAnalysis::ViewState::cameraGround, SurfaceAnalysis::ViewState::cameraHeight, SurfaceAnalysis::Report::cameraHeight, SurfaceAnalysis::Report::degraded, SurfaceAnalysis::ViewState::groundSamples, SurfaceAnalysis::ViewState::heightScale, SurfaceModel::Patch::key, TileMath::kMinZoom, SurfaceAnalysis::Report::maxSurfaceNearCamera, SurfaceAnalysis::Report::minStep, SurfaceAnalysis::Report::pending, SurfaceAnalysis::Report::rendered, SurfaceAnalysis::Report::seams, SurfaceAnalysis::Report::surfaceAtCamera, SurfaceAnalysis::Report::surfaceUnderCamera, TileMath::tileMinCorner(), TileMath::tileSpanAtZoom(), TileMath::worldToGeo(), TileMath::TileKey::x, TileMath::TileKey::y, and TileMath::TileKey::zoom.

Referenced by SurfacePatchModel::analyzeSurface().

holeCauseDescription()

QString SurfaceAnalysis::holeCauseDescription

(

HoleCause

cause

)

Definition at line 254 of file SurfaceAnalysis.cc.

References ElevatedTerrainCulled, NoPatch, and SuppressedCovered.

Referenced by SurfaceAnalysis::Report::text().

seamCauseDescription()

QString SurfaceAnalysis::seamCauseDescription

(

SeamCause

cause

)

Definition at line 238 of file SurfaceAnalysis.cc.

References DegradedFlat, LodTJunction, PendingFlat, and SameZoomMismatch.

Referenced by SurfaceAnalysis::Report::text().