If statement between two codes!

Mimansoob

Hello, I have a project that I made and the first code is like controlling a servo manually and the 2nd code is to control a servo automatically, now the problem is that I have tried to combine both codes into one code and make an if statement to choose if I want to control the servo manually or automatically.

I tried to input a key like this

void keyPressed() {
   if (key = '1') {
  mode = key ;
} 
else if (key = '2') {
  mode = key ;
}
}

and I put this code right after void draw

    if (mode = '1'){*the manual control code}
    else if(mode = '2'){*the auto control code*}t

I do not know how to convert this if statement to GUI too as I do need this too.

I just need to know where should I put the if statement (if statement is easier than button GUI I think..)

PS: my main project is sentry gun and I can control it manually via mouse or automatically via camera (tracking).

I hope you guys get this.

Thank You

TfGuy44

Format your code for the forums. Select it and press the C button above the text entry box.

The error you are getting seems to indicate that you have mis-matched braces - maybe void draw should be void draw(){ ? Press Ctrl-t in the Processing editor to format your code.

Mimansoob

here it is but it wont work without an arduino.. this is the 2 codes (inside if (mode=...etc) statement )I want to make a key to chose between them

ps: I chose your answer as "Accepted Answer" I thought it was making me allow your question to be posted here.. ^^

import processing.video.*;
import processing.serial.*;  

Capture video;
int xpos=0; 
int ypos=0;
Serial port; 
PImage prevFrame;

float threshold = 100;
int Mx = 0;
int My = 0;
int ave = 0;

int ballX = width*8;
int ballY = height*8;
int rsp = 5;
void setup() {
  size(320, 240);
  video = new Capture(this, width, height, 30);
  video.start();
  prevFrame = createImage(video.width, video.height, 255);
  println(Serial.list()); 
  port = new Serial(this, "COM4", 19200);
}

void draw() {

  if (mode='1') {
    if (video.available()) {

      prevFrame.copy(video, 0, 0, video.width, video.height, 0, 0, video.width, video.height); 
      prevFrame.updatePixels();
      video.read();
      image(video, 0, 0, 360, 360);
      update(Mx, My);

      cursor(CROSS);
    }

    loadPixels();
    video.loadPixels();
    prevFrame.loadPixels();

    Mx = 0;
    My = 0;
    ave = 0;


    for (int x = 0; x < video.width; x ++ ) {
      for (int y = 0; y < video.height; y ++ ) {

        int loc = x + y*video.width; 
        color current = video.pixels[loc];      
        color previous = prevFrame.pixels[loc]; 


        float r1 = red(current); 
        float g1 = green(current);
        float b1 = blue(current);
        float r2 = red(previous);
        float g2 = green(previous); 
        float b2 = blue(previous);
        float diff = dist(r1, g1, b1, r2, g2, b2);


        if (diff > threshold) { 
          pixels[loc] = video.pixels[loc];
          Mx += x;
          My += y;
          ave++;
        } 
        else {

          pixels[loc] = video.pixels[loc];
        }
      }
    }
    rect(0, 0, width, height);
    if (ave != 0) { 
      Mx = Mx/ave;
      My = My/ave;
    }
    if (Mx > ballX + rsp && Mx > 50) {
      ballX+= rsp;
    }
    else if (Mx < ballX - rsp && Mx > 50) {
      ballX-= rsp;
    }
    if (My > ballY + rsp && My > 50) {
      ballY+= rsp;
    }
    else if (My < ballY - rsp && My > 50) {
      ballY-= rsp;
    }

    updatePixels();
    strokeWeight(1.0);
    stroke(0);
    fill(99, 255, 99, 90);
    ellipse(ballX, ballY, 15, 15);



    void update(int Mx, int My)
    {
      xpos= Mx/2;
      ypos = My/2;

      port.write(xpos+"Mx");
      port.write(ypos+"My");
    }
  }

  else if (mode = '2') {
    fill(175);
    rect(0, 0, 360, 360);
    fill(255, 255, 255);
    rect(180, 175, mouseX-180, 10);
    fill(0, 255, 255);
    rect(180, 180, 10, mouseY-180, 10);
    update(mouseX, mouseY);
  }

  void update(int x, int y)
  {
    xpos= x/2;
    ypos = y/2;

    port.write(xpos+"x");
    port.write(ypos+"y");
  }
}

Mimansoob

I have edited the void update() to this and put it in the end outside of the if statement ps:I replaced all Mx and My to x and y

    void update(int x, int y)
    {
      xpos= x/2;
      ypos = y/2;

      port.write(xpos+"x");
      port.write(ypos+"y");
    }

TfGuy44

= is assignment. == is comparison test.

Mimansoob

sorry I did not get you? I am sort of a beginner in processing

GoToLoop

Same thing I've posted at:
http://forum.processing.org/two/discussion/4332/how-to-access-library-functions-from-within-the-draw-method-themidibus

Equality operator == isn't the same as assignment operator =.
http://processing.org/reference/equality.html
http://processing.org/reference/assign.html

Mimansoob

O.O it worked! thank you so much GoToLoop and TfGuy44! you saved me "Equality operator == is not the same as assignment operator"