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Hi all I am trying to move this bar graph to the center of the window size while maintaining a 100px clear area for a scale, legend and titles to show thru from a background image. I managed to get the x start and end as well as the y sorted but i can't seem to locate an area to adjust where the graph starts in lower Y direction. any help you can offer would be greatly appreciated.
import processing.serial.*;
PImage bg;
Serial myPort; // The serial port
int xPos = 100; // horizontal position of the graph added to leave space on the left
float inByte = 0;
void setup () {
// set the window size:
size(800, 800);
// List all the available serial ports
// if using Processing 2.1 or later, use Serial.printArray()
println(Serial.list());
// I know that the first port in the serial list on my mac
// is always my Arduino, so I open Serial.list()[0].
// Open whatever port is the one you're using.
myPort = new Serial(this, "COM4", 115200);
// don't generate a serialEvent() unless you get a newline character:
myPort.bufferUntil('\n');
bg = loadImage("full.png");
// set inital background:
//background(255); //was 0 for black
background(bg);
}
void draw () {
// draw the line:
stroke(0, 0, 0); // was 127, 34, 255 use RGB to hex converter
line(xPos, height, xPos, height - inByte);
// at the edge of the screen, go back to the beginning:
if (xPos >= width-100) { //added -100 to leave room at right side
xPos = 100; //reset x position once you get to end
background(bg); //(255);// was 0 black you need to change both
} else {
// increment the horizontal position:
xPos++;
}
}
void serialEvent (Serial myPort) {
// get the ASCII string:
String inString = myPort.readStringUntil('\n');
if (inString != null) {
// trim off any whitespace:
inString = trim(inString);
// convert to an int and map to the screen height:
inByte = float(inString);
println(inByte);
inByte = map(inByte, 0, 1023, 0, height-100); //minus 100 was added to leave space at top
}
}
Answers
This is the line where you draw the lines of your graph:
line(xPos, height, xPos, height - inByte);
if you want to move these lines upward, then you have to subtract some value from the y-values of this line. Something like this:
line(xPos, height-100, xPos, height -100- inByte);
That worked perfect thank you very much!