private final void iteration_h(
Array2D windMap,
Array2D heightMap,
int x,
int z,
float dx,
float dz,
int xIt,
float windDescentRate) {
// Assume either dx or dz is 1f and the other is less.
float z_precise = z;
float elevation = initialElevation;
int lastZ;
dz /= Math.abs(dx);
windDescentRate /= Math.abs(dx);
iteration:
while (true) {
lastZ = z;
while (z == lastZ) {
elevation = Math.max(minWindHeight, elevation - windDescentRate);
float height = heightMap.get(x, z);
if (elevation < height) elevation = height;
windMap.set(x, z, elevation - heightMap.get(x, z));
x += xIt;
z_precise += dz;
z = (int) z_precise;
if (x < 0 || x >= windMap.width || z < 0 || z >= windMap.height) break iteration;
}
}
}
private final void iteration_v(
Array2D windMap,
Array2D heightMap,
int x,
int z,
float dx,
float dz,
int zIt,
float windDescentRate) {
// Assume either dx or dz is 1f and the other is less.
float x_precise = x;
float elevation = initialElevation;
int lastX;
dx /= Math.abs(dz);
windDescentRate /= Math.abs(dz);
iteration:
while (true) {
lastX = x;
while (x == lastX) {
elevation = Math.max(minWindHeight, elevation - windDescentRate);
float height = heightMap.get(x, z);
if (elevation < height) elevation = height;
windMap.set(x, z, elevation - heightMap.get(x, z));
z += zIt;
x_precise += dx;
x = (int) x_precise;
if (x < 0 || x >= windMap.width || z < 0 || z >= windMap.height) break iteration;
}
}
}