/**
* Guess diameter 1) user defined environment variable 2) comments in GCODE file 3) Fallback to
* some very rough calculation
*
* @return diameter
*/
private float guessDiameter() {
// Read user defined environment variable if exists
try {
String dia = System.getenv("FILAMENT_DIAMETER");
if (dia != null) {
// System.out.println("Use env value FILAMENT_DIAMETER="+dia);
return Float.parseFloat(dia);
}
} catch (NumberFormatException e1) {
}
// get diameter from comments in gcode file
try {
GCodeStore codes = getGcodes();
for (GCode gCode : codes) {
// Ignore comments behind gcodes
if (gCode.isComment()) {
// System.out.println("COMMENT"+gCode.getComment());
if (gCode.getComment().matches(".*FILAMENT_DIAMETER\\s=.*")) { // SLICER
// System.out.println("MATCHES:"+gCode.getComment());
String[] res = gCode.getComment().split("=");
return Float.parseFloat(res[1]);
} else if (gCode.getComment().matches(".*FILAMENT_DIAMETER_.*")) { // SKEINFORGE
// System.out.println("MATCHES:"+gCode.getComment());
String[] res = gCode.getComment().split("[:<]");
return Float.parseFloat(res[2]);
}
}
}
} catch (Exception e) {
// Comment parsing failed
}
// System.err.println("Failed to parse GCODE comments for filament diameter. Fallback to
// guessing.");
// Fallback ... no comments found
isguessed = true;
// Tried many formulars but there is no good way to guess the diameter (too many unknowns)
//
float exRadius = getAvgLayerHeight() / 2;
float WOT = 2.1f; // Assume a wide over thickness value of ~2.1 (heavily depends on nozzel size)
double extrArea = exRadius * (exRadius * WOT) * Math.PI; // Fläche extruded mm2
double menge = extrArea * getDistance();
double sizeArea = menge / getExtrusion();
double guessedDia = Math.sqrt(sizeArea / Math.PI) * 2;
// System.out.println("Extr menge mm3:"+menge/1000+" Estimate dia:"+guessedDia);
// Either take 1.75 or 3mm
if (guessedDia > 2.45f) {
return 3;
} else if (guessedDia < 2.05f) {
return 1.75f;
}
// use 3
System.out.println(
"Unable to detect diameter - Fallback to 3mm.\nPlease set environment variable FILAMENT_DIAMETER");
return 3;
}
public String getModelComments() {
StringBuilder buf = new StringBuilder(500);
buf.append("--------- Slicer Comments------------\n");
int max = 500; // max to avoid OOM
for (GCode gCode : gcodes) {
// Ignore comments behind gcodes
if (max > 0 && gCode.isComment()) {
// System.out.println(gCode.getComment());
buf.append(gCode.getComment());
buf.append(Constants.newlinec);
max--;
}
}
return buf.toString();
}
