sec_interp.core.services.structure_service module

Structure Data Processing Service.

This module handles the calculation of apparent dips and projection of structural measurements (planes, lines) onto the section plane.

class sec_interp.core.services.structure_service.StructureService

Bases: IStructureService

Service for projecting structural measurements onto cross-sections.

This service handles the filtering and projection of structural measurements (dip/strike) onto a cross-section plane to calculate apparent dip.

detach_structures(struct_lyr: QgsVectorLayer, line_geom: QgsGeometry, buffer_m: float) → list[dict[str, Any]]

Extract structural features within buffer into detached dictionaries.

Uses a spatial index filter via a buffer around the section line.

Parameters:

• struct_lyr – Structural measurements vector layer.

• line_geom – Section line geometry.

• buffer_m – Buffer distance in meters.

Returns:

List of detached dictionaries containing WKT and attributes.

project_structures(line_geom: QgsGeometry, line_start: QgsPointXY, da: QgsDistanceArea, raster_lyr: QgsRasterLayer, struct_data: list[dict[str, Any]], buffer_m: float, line_az: float, dip_field: str, strike_field: str, band_number: int = 1) → StructureData

Project detached structural measurements onto the section plane.

Calculates stations (distance along section), elevations from DEM, and apparent dips based on the section orientation.

Parameters:

• line_geom – Section line geometry.

• line_start – Section start point.

• da – Distance calculator.

• raster_lyr – Elevation raster layer.

• struct_data – List of detached structural data.

• buffer_m – Projection buffer (m).

• line_az – Section azimuth in degrees.

• dip_field – Field name for dip angle.

• strike_field – Field name for strike azimuth.

• band_number – Raster band for elevation.

Returns:

Sorted list of projected StructureMeasurement objects.

Return type:

StructureData