private final ZSamplePoint<TZ> closeSample(int x, int y) { ZSamplePoint<TZ> A = sampleGrid.getOrCreate(x, y); A.setZ( metric.closeSample( A.up() != null ? A.up().getZ() : null, A.down() != null ? A.down().getZ() : null, A.right() != null ? A.right().getZ() : null, A.left() != null ? A.left().getZ() : null)); return A; }
public final void addSamplingPoint(Coordinate C0, double z) { if (closed) throw new IllegalStateException("Can't add a sample after closing."); int[] xy = sampleGrid.getLowerLeftIndex(C0); int x = xy[0]; int y = xy[1]; @SuppressWarnings("unchecked") ZSamplePoint<TZ>[] ABCD = new ZSamplePoint[4]; ABCD[0] = sampleGrid.getOrCreate(x, y); ABCD[1] = sampleGrid.getOrCreate(x + 1, y); ABCD[2] = sampleGrid.getOrCreate(x, y + 1); ABCD[3] = sampleGrid.getOrCreate(x + 1, y + 1); for (ZSamplePoint<TZ> P : ABCD) { Coordinate C = sampleGrid.getCoordinates(P); P.setZ(metric.cumulateSample(C0, C, z, P.getZ())); } }