#include <PatchSampler.h>

Classes
struct	EdgeStep

Public Member Functions
	PatchSampler (const ElevationTilePyramid &pyramid, const TileMath::TileKey &key, int gridSize, EdgeStep *edgeStep=nullptr)
	edgeStep, when set, receives the patch's largest EdgeStep

QList< float >	sample ()
	The (gridSize+1)^2 vertex heights, row-major from the NW corner.

Static Public Member Functions
static double	heightAtUV (const ElevationTilePyramid::Grid &grid, double u, double v)

Detailed Description

Canonical vertex-height resolution for one patch: interior vertices sample the patch's own backing view; boundary vertices resolve by position so every patch sharing the vertex samples bit-identical heights (see HeightField::samplePatch). Where a boundary vertex resolves to other data than the patch's own view, the mismatch is spread across the interior so it ramps in instead of dropping in the last cell (a cliff). gridSize must be a power of two so vertex UVs are exact dyadic doubles. Single-use: construct, sample() once.

Definition at line 26 of file PatchSampler.h.