private void clearFlowAccumulation() {
for (Rectangle2DInteger rect : this.range) {
int x0 = rect.getX();
int y0 = rect.getY();
int w = rect.getWidth();
int h = rect.getHeight();
int x1 = x0 + w;
int y1 = y0 + h;
for (int y = y0; y < y1; y++) {
for (int x = x0; x < x1; x++) {
flowAccumulation.set(x, y, Float.NaN);
}
}
}
}
private void initalizeNodes() {
nodes.clear();
for (Rectangle2DInteger rect : this.range) {
int x0 = rect.getX();
int y0 = rect.getY();
int x1 = x0 + rect.getWidth();
int y1 = y0 + rect.getHeight();
for (int y = y0; y < y1; y++) {
for (int x = x0; x < x1; x++) {
float z = elev.get(x, y);
if (!Float.isNaN(z)) {
float[] h = elev.get3x3(x, y);
for (float height : h) {
if (Float.isNaN(height)) {
nodes.push(new Point2DInteger(x, y));
break;
}
}
}
}
}
}
System.out.println("Total nodes " + nodes.size());
}