The engine is able to render heightmap-based terrains with multiple blended surface textures and pre-calculated self-shadowing.

2D coordinates

Coordinate system directed right-downwards (as used in graphics files). The standard orientation is a view along the positive Y axis.

This is sometimes referred to as world coordinates in the source code.

Positive X axis Width of the terrain
Positive Y axis Depth of the terrain

3D coordinates

Left-handed coordinate system (as used by DirectX). The standard orientation is a view along the negative Z axis.

This is sometimes referred to as engine coordinates in the source code.

Positive X axis Width of the terrain
Positive Y axis Height of the terrain
Negative Z axis Depth of the terrain