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Dear Group,
I am interested to know if there is a way to be able to display a line by
reading the coordinate points from a file? i am not dealing with any image
stacks here, all i want is to be able to display a line, coz for some reason
i am not able to do. here is what i did:
public void actionPerformed(ActionEvent e) {
String label = e.getActionCommand();
if (label==null)
return;
img = WindowManager.getCurrentImage();
if (img==null) {
IJ.beep();
IJ.showStatus("No image");
return;
}
//the open method is supposed to read a coordinate points from a file and
display the line on the img.
if(label=="Open"){
IJ.showStatus("entered Open");
String line[] = new String[4];
JFileChooser chooser = new JFileChooser(morphoFile);
if ( morphoFile.isFile() ) {
chooser.setSelectedFile(morphoFile);
}
int result = chooser.showOpenDialog(frame);
if (result == JFileChooser.CANCEL_OPTION) return;
morphoFile = chooser.getSelectedFile();
try {
FileReader readIn = new FileReader(morphoFile);
BufferedReader in = new BufferedReader(readIn);
String inLine;
String fLine="";
int linectr=0;
int ctr=0;
// I am trying to read 2 lines at a time so that will provide the two
endpoints of the line
while ((inLine = in.readLine()) != null & linectr <= 1) {
fLine = fLine + " " + inLine;
++linectr;
if(linectr > 1){
StringTokenizer st = new StringTokenizer(fLine);
while(st.hasMoreTokens()){
line[ctr++] = st.nextToken();
}
canvas.setImageUpdated();
//s2ints funtion doesn't work at all! so i have used my own method called
transfer to convert string to int[], but neither does this work :(
//int[] xy = cp.s2ints(fLine);
int[] xy = transfer(line);
//i cannot get these messages printed!
IJ.showStatus("len:"+xy.length);
//IJ.showMessage(xy[0]+" "+xy[1]+" "+xy[2]+" "+xy[3]);
//IJ.showMessage("pnt:"+x_1+" "+y_1);
//imp.setRoi(ln);
//my understanding is that these two methods are sufficient to draw a line,
then why am i not able to?
img.getProcessor().moveTo(canvas.offScreenX(xy[0]),
canvas.offScreenY(xy[1]));
img.getProcessor().lineTo(canvas.offScreenX(xy[2]),
canvas.offScreenY(xy[3]));
//imp.drawLine(x_1,y_1,x_2,y_2);
//img.setProcessor("Draw A Line",imp);
img.updateAndRepaintWindow();
linectr=0;
ctr=0;
}
}
}catch(Exception ex){IJ.showStatus(ex.getMessage());}
}
.....
Please tell me what am i doing wrong here!
-Thanks in advance
Sri
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