+}
+
+static float calc_height(float u, float v, void *ptr)
+{
+ GenData *data = (GenData *)ptr;
+ const TerrainParams *tp = data->tp;
+
+ u = u / tp->xtiles + data->xoffs;
+ v = v / tp->ytiles + data->yoffs;
+
+ return data->terrain->get_height(u, v);