QcRiverField::Course Struct
struct QcRiverField::CourseWhere a column lies across the river near it (decision E-850), from the river noise here at the column: its signed distance from the middle line in blocks (the noise over its slope; the side the noise is positive on counts positive), the unit direction across the river (the noise's gradient in real coordinates, the meander included) and how wide the river runs there (0..1, its share between the narrowest and the widest river, before gorges or dry land narrow it). More...
Detailed Description
Costs two more readings of the noise.