Skip to content

align tile buffer for PGIS_TILES #433

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
azahnen merged 1 commit into from
Jan 19, 2026
Merged

align tile buffer for PGIS_TILES #433

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 2 additions & 1 deletion xtraplatform-tiles/src/main/java/de/ii/xtraplatform/tiles/app/FeatureEncoderMVT.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
import de.ii.xtraplatform.features.domain.transform.FeatureEncoderSfFlat;
import de.ii.xtraplatform.features.domain.transform.FeatureSfFlat;
import de.ii.xtraplatform.tiles.domain.LevelTransformation;
import de.ii.xtraplatform.tiles.domain.TileBuilder;
import de.ii.xtraplatform.tiles.domain.TileCoordinates;
import de.ii.xtraplatform.tiles.domain.TileGenerationContext;
import de.ii.xtraplatform.tiles.domain.TileGenerationOptions;
Expand Down Expand Up @@ -70,7 +71,7 @@ public FeatureEncoderMVT(TileGenerationContext encodingContext) {
this.geometryFactoryWorld = new GeometryFactory();

final int size = tile.getTileMatrixSet().getTileSize();
final int buffer = 8;
final int buffer = TileBuilder.BUFFER_SIZE_FORMAL;
CoordinateXY[] coords = new CoordinateXY[5];
coords[0] = new CoordinateXY(-buffer, size + buffer);
coords[1] = new CoordinateXY(size + buffer, size + buffer);
Expand Down
11 changes: 9 additions & 2 deletions xtraplatform-tiles/src/main/java/de/ii/xtraplatform/tiles/app/TileBuilderPgisAsMvt.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -290,12 +290,19 @@ private String queryToSql(
.map(FeatureSchema::getName);

String filter = filtersToSql(providerId, tileset, schema, tms.getId(), level);
int buffer = (tms.getTileExtent() / tms.getTileSize()) * TileBuilder.BUFFER_SIZE_FORMAL;

String bounds = "bounds AS (SELECT %1$s AS geom, %2$s::box2d AS b2d)";
String mvtgeom =
String.format(
"mvtgeom AS (SELECT ST_AsMVTGeom(ST_Transform(A.%1$s, %%3$s), bounds.b2d, %6$d, 8) AS geom, %2$s FROM %3$s A, bounds WHERE (%5$s AND ST_Intersects(A.%1$s, ST_Transform(bounds.geom, %4$s))))",
geomColumn, attrColumns, table, nativeCrs.getCode(), filter, tms.getTileExtent());
"mvtgeom AS (SELECT ST_AsMVTGeom(ST_Transform(A.%1$s, %%3$s), bounds.b2d, %6$d, %7$d) AS geom, %2$s FROM %3$s A, bounds WHERE (%5$s AND ST_Intersects(A.%1$s, ST_Transform(bounds.geom, %4$s))))",
geomColumn,
attrColumns,
table,
nativeCrs.getCode(),
filter,
tms.getTileExtent(),
buffer);

String template =
String.format(
Expand Down
3 changes: 3 additions & 0 deletions xtraplatform-tiles/src/main/java/de/ii/xtraplatform/tiles/domain/TileBuilder.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,9 @@
@AutoMultiBind
public interface TileBuilder {

// buffer in relation to the "formal" tile size (256 for WMQ)
int BUFFER_SIZE_FORMAL = 8;

int getPriority();

boolean isApplicable(String featureProviderId);
Expand Down