Code from page

Kalmar

Where can i find code from this page >>> http://hello.processing.org/ <<< Im interesting in this code very much.

Kalmar

or someone know how connect 2 points by line like on that page

blyk

Here is my old code http://www.openprocessing.org/sketch/111878

Kalmar

int x,y,z,w ;
void setup()
{
 size(640, 360); 
}
void draw()
{ 
x= mouseX;
y= mouseY;
if (mousePressed==true) 
{
  fill(255,0,0);
rect(mouseX,mouseY,5,5);
point(pmouseX,pmouseY);
z=pmouseX;
w=pmouseY;
}
line(z,w,mouseX,mouseY );
}

look that, i want only 1 line behind two points, but in my code there are a lot of lines from each point. Can you check my code?

Chrisir

when you use background you clear the canvas

click mouse then

int x, y, z, w ;
void setup()
{
  size(640, 360);
  background(111);
}
void draw()
{ 
  background(111);
  x= mouseX;
  y= mouseY;
  if (mousePressed==true) 
  {
    fill(255, 0, 0);
    rect(mouseX, mouseY, 5, 5);
    point(pmouseX, pmouseY);
    z=pmouseX;
    w=pmouseY;
  }
  line(z, w, mouseX, mouseY );
}

Chrisir

if (mousePressed==true)

also ok

if (mousePressed)

Kalmar

But after drawing line i want to save it on the board.I want to draw a square with lines

Kalmar

and if it possible connect points like on that page http://hello.processing.org if they are near

Chrisir

here

int x, y, z, w ;
void setup()
{
  size(640, 360);
  background(111);
}
void draw()
{ 
  //  background(111);
  x= mouseX;
  y= mouseY;
  if (mousePressed==true) 
  {
    fill(255, 0, 0);
    rect(mouseX, mouseY, 5, 5);
    point(pmouseX, pmouseY);

    if (z>0&&w>0)
      line(z, w, mouseX, mouseY );
    z=mouseX;
    w=mouseY;
  }
}

Chrisir

you wrote

and if it possible connect points like on that page http://hello.processing.org if they are near

to achieve this: you have to store the points in an ArrayList and make a check which points are near and then connect

maybe look for it in www.openprocessing.org

http://www.openprocessing.org/sketch/8168

Kalmar

thank you very much for help, i study processing only few days so you save my time :D

Kalmar

how to draw line from point which i chose????

Chrisir

when you click the mouse and click again elsewhere you have a line.

That's the point you chose: where you click.

Chrisir

with this new version if you hold a key on the keyBoard, you don't draw lines

thus you can draw e.g. two independent rectangles using the mouse

int x, y, z, w ;
void setup()
{
  size(640, 360);
  background(111);
}
void draw()
{ 
  //  background(111);
  x= mouseX;
  y= mouseY;
  if (mousePressed==true) 
  {
    fill(255, 0, 0);
    rect(mouseX, mouseY, 5, 5);
    point(pmouseX, pmouseY);

    if (z>0&&w>0&&!keyPressed)
      line(z, w, mouseX, mouseY );
    z=mouseX;
    w=mouseY;
  }
}

Kalmar

another one question, how can i delet line or point or another one figure.Can you help me with this ?

Chrisir

when you hold q on the keyboard you delete canvas with the mouse (press mousebutton)

int x, y, z, w ;
void setup()
{
  size(640, 360);
  background(111);
}
void draw()
{ 
  //  background(111);

  stroke(0);

  x= mouseX;
  y= mouseY;
  if (mousePressed) 
  {
    fill(255, 0, 0);
    rect(mouseX, mouseY, 5, 5);
    point(pmouseX, pmouseY);

    if (z>0 && w>0 && !keyPressed) {
      line(z, w, mouseX, mouseY );
    } // if 

    // delete 
    if (keyPressed && key=='q') {
      fill(111);
      noStroke();
      rect(mouseX-25, mouseY-25, 50, 50);
    } // if 
    else {  
      z=mouseX;
      w=mouseY;
    } // else
  } // if
} // func 
// 

Kalmar

and the last question)) how can i count how many pixels in the line (i want to know Cables length)

Chrisir

use dist() and add all dists of one bus

see reference for dist()

Kalmar

i dont know how to do it where should i use dist()?

Chrisir

here ...

with dist() you give two points and get the distance between them

line as well gets two points as parameters

int x, y, z, w ;
float distTotal;


void setup()
{
  size(640, 360);
  background(111);
}
void draw()
{ 
  //  background(111);

  stroke(0);

  x= mouseX;
  y= mouseY;
  if (mousePressed) 
  {
    fill(255, 0, 0);
    rect(mouseX, mouseY, 5, 5);
    point(pmouseX, pmouseY);

    if (z>0 && w>0 && !keyPressed) {
      line(z, w, mouseX, mouseY );
      distTotal = distTotal + dist( z, w, mouseX, mouseY )  ;
      println (distTotal);
    } // if 

    // delete 
    if (keyPressed && key=='q') {
      fill(111);
      noStroke();
      rect(mouseX-25, mouseY-25, 50, 50);
    } // if 
    else {  
      z=mouseX;
      w=mouseY;
    } // else
  } // if
} // func 
// 

Kalmar

how can i print "distTotal" on monitor?

Chrisir

text()

Kalmar

textFont(verdana, 20);
fill(0);
text("distTotal",10,25);

i tried to do it, but it print only word "distTotal"

Chrisir

Without the " "

Chrisir

textFont(verdana, 20);
fill(0);
text(distTotal,10,25);

Chrisir

here... line 28 following ...

int x, y, z, w ;
float distTotal;


void setup()
{
  size(640, 360);
  background(111);
}
void draw()
{ 
  //  background(111);

  stroke(0);

  x= mouseX;
  y= mouseY;
  if (mousePressed) 
  {
    fill(255, 0, 0);
    rect(mouseX, mouseY, 5, 5);
    point(pmouseX, pmouseY);

    if (z>0 && w>0 && !keyPressed) {
      line(z, w, mouseX, mouseY );
      distTotal = distTotal + dist( z, w, mouseX, mouseY )  ;
      println (distTotal);
      // delete old text
      fill(111);
      noStroke();
      rect (0, 0, 100, 20);
      // bring in new text
      fill(255);
      text (int(distTotal), 12, 12);
    } // if 

    // delete 
    if (keyPressed && key=='q') {
      fill(111);
      noStroke();
      rect(mouseX-25, mouseY-25, 50, 50);
    } // if 
    else {  
      z=mouseX;
      w=mouseY;
    } // else
  } // if
} // func 
// 

Kalmar

please, if you can check this code.I want to draw ellipse\rect if i click on icon, but when i pressed button on my mouse i draw a line on ellipse\rect boolean [] button1; boolean [] button2; int i, n,u; void setup() { background(250);

  size(1250,690);

  button1 = new boolean[1];
    button2 = new boolean[1];

}
void draw()
{

 if(button1[i]) 
   {  
if (mousePressed == true) 
         {
           if ( mouseY>120)
           {
          strokeWeight(4);
          rect(mouseX,mouseY,56,48);
         }
         }
         fill(255,0,0);
   }
 else 
      {
fill(0,255,0);
      }
      strokeWeight(3);
rect(330,26,56,48);
 if(button2[u]) 
   {  
if (mousePressed == true) 
         {
           if ( mouseY>120)
           {
          strokeWeight(4);
          ellipse(mouseX,mouseY,56,48);
         }
         }
         fill(255,0,0);
   }
 else 
      {
fill(0,255,0);
      }
      strokeWeight(3);
rect(430,26,56,48);
}
void mouseClicked(){
    if(dist(360,38,mouseX, mouseY)<=32)
    {
      button1[n] = !button1[n];
    }    
        if(dist(460,58,mouseX, mouseY)<=32){
      button2[n] = !button2[n];
        }  
  }

Chrisir

here

boolean [] button1; 
boolean [] button2; 
int i=0, n=0, u=0; 


void setup() { 
  background(250);  
  size(1250, 690);

  button1 = new boolean[1];
  button2 = new boolean[1];
}

void draw()
{

  if (button1[i])
  { 
    if (mousePressed == true)
    {
      if ( mouseY>120)
      {
        strokeWeight(4);
        rect(mouseX, mouseY, 56, 48);
      }
    }
    fill(255, 0, 0);
  }
  else
  {
    fill(0, 255, 0);
  }

  strokeWeight(3);
  rect(330, 26, 56, 48);
  if (button2[u])
  { 
    if (mousePressed == true)
    {
      if ( mouseY>120)
      {
        strokeWeight(4);
        ellipse(mouseX, mouseY, 56, 48);
      }
    }
    fill(255, 0, 0);
  }
  else
  {
    fill(0, 255, 0);
  }
  strokeWeight(3);
  ellipse(450, 50, 56, 48);
}
void mouseClicked() {
  if (dist(360, 38, mouseX, mouseY)<=32)
  {
    button1[n] = !button1[n];
  }   
  if (dist(460, 58, mouseX, mouseY)<=32) {
    button2[n] = !button2[n];
  }
}
//

Kalmar

no i think that you didnt understand me, i want draw 1 ellipse\rect when i mousePressed but know i draw a lot of ellipse\rect ( on 1 line )

Chrisir

here

boolean [] button1; 
boolean [] button2; 
int i=0, n=0, u=0; 


void setup() { 
  background(250);  
  size(1250, 690);

  button1 = new boolean[1];
  button2 = new boolean[1];
}

void draw()
{
  if (button1[i])
  { 
    fill(255, 0, 0);
  }
  else
  {
    fill(0, 255, 0);
  }

  strokeWeight(3);
  rect(330, 26, 56, 48);
  if (button2[u])
  { 
    fill(255, 0, 0);
  }
  else
  {
    fill(0, 255, 0);
  }
  strokeWeight(3);
  ellipse(450, 50, 56, 48);
}

void mouseClicked() {
  if (dist(360, 38, mouseX, mouseY)<=32)
  {
    button1[n] = !button1[n];
  }   
  else if (dist(460, 58, mouseX, mouseY)<=32) {
    button2[n] = !button2[n];
  }


  {
    if (button1[i])
    { 
      if ( true)
      {
        if ( mouseY>120)
        {
          strokeWeight(4);
          rect(mouseX, mouseY, 56, 48);
        }
      }
    }


    if (button2[u])
    { 
      if ( true)
      {
        if ( mouseY>120)
        {
          strokeWeight(4);
          ellipse(mouseX, mouseY, 56, 48);
        }
      }
    }
  }
}
//

Kalmar

thx u for help, but look if you pressed rect you draw rect, when you pressed circle you dwar circle but when i pressed rect and them pressed circle draw both rect+circle i tried to fix this but i dont know how, when i pressed circler (ICON) and then rect(icon) i want turn off circle and drawing rect

blyk

Here, I have commented the modifications

boolean [] button1; 
boolean [] button2; 
int i=0, n=0, u=0; 


void setup() { 
  background(250);  
  size(1250, 690);

  button1 = new boolean[1];
  button2 = new boolean[1];
}

void draw()
{
  if (button1[i])
  { 
    fill(255, 0, 0);
  }
  else
  {
    fill(0, 255, 0);
  }

  strokeWeight(3);
  rect(330, 26, 56, 48);
  if (button2[u])
  { 
    fill(255, 0, 0);
  }
  else
  {
    fill(0, 255, 0);
  }
  strokeWeight(3);
  ellipse(450, 50, 56, 48);
}

void mousePressed() {
  if (dist(360, 38, mouseX, mouseY)<=32)
  {
    button1[n] = !button1[n];
    button2[n] = false; // add these two line that's all
  }   
  else if (dist(460, 58, mouseX, mouseY)<=32) {
    button2[n] = !button2[n];
    button1[n] = false;  // add these two line that's all
  }


  {
    if (button1[i])
    { 
      if ( true)
      {
        if ( mouseY>120)
        {
          strokeWeight(4);
          rect(mouseX, mouseY, 56, 48);
        }
      }
    }


    if (button2[u])
    { 
      if ( true)
      {
        if ( mouseY>120)
        {
          strokeWeight(4);
          ellipse(mouseX, mouseY, 56, 48);
        }
      }
    }
  }
}

Kalmar

if(button14[xx]) 
   {  
     if ( true)
           {
if ( keyPressed  ) {
background(250);
  for (int k=20; k < 1250; k += 20) 
{
strokeWeight(0);
line(0 + k , 100 , 0 + k,1250);
line(0 , 100 + k , 1250 ,100 + k);
}
}
           }

im for perseverance but look at this code, here when i pressed key i use background(250); and delete all at window but when i againe draw line

if(button10[x]) 
   {  
if (mouseY > 110)
{if ( true)
           {
  if (mousePressed==true) 
  {
    fill(255, 0, 0);
    rect(mouseX, mouseY, 1, 1);
    point(pmouseX, pmouseY);
 strokeWeight(8);
    if (zz>0&&zz>0&&!keyPressed)
      line(zz, zzz, mouseX, mouseY );
      distTotal2=distTotal2 + (dist( zz, zzz, mouseX, mouseY )/100)  ;
    zz=mouseX;
    zzz=mouseY;
  }
           }

i connect with last point which i drew defore background(250);

Chrisir

when using background also say

zz=-1;

this is checked by the if-clause in line 12; no line is made when zz is ==-1

Kalmar

thx

Chrisir

yeah

just use zz=-1;

don't use z=-1;

Also:

after the if-line (line 12) please insert { and

insert } before zz=mouseX; (line 15)

Kalmar

but i have 2 questions and thats all) if (mousePressed==true) { fill(255, 0, 0); rect(mouseX, mouseY, 1, 1); point(pmouseX, pmouseY); strokeWeight(8); if (zz>0&&zz>0&&!keyPressed) line(zz, zzz, mouseX, mouseY ); distTotal2=distTotal2 + (dist( zz, zzz, mouseX, mouseY )/100) ; zz=mouseX; zzz=mouseY; } when i use this code i draw and count line but first points with cordination (35;35) give me first dist 35 + another point (8;8) will be 35 + distance before 2 point i dont want count first point i tried do it with for(); but it didnt work

Chrisir

How to post code

when you post your code:

• in the editor hit ctrl-t to auto format

• copy it

• paste it in the browser

• leave 2 empty lines before and 1 empty line after it

• mark the code (without the 2 empty lines)

• press C in the small command bar.

Chrisir

Also:

after the if-line (line 12) please insert { and

insert } before zz=mouseX; (line 15)

Kalmar

im sorry but i dont understand (

Chrisir

insert an opening bracket {

and a closing bracket

so that the excuted part of the if clause is not one line but two lines

if (zz>0&&zz>0&&!keyPressed)
   {
      line(zz, zzz, mouseX, mouseY );
      distTotal2=distTotal2 + (dist( zz, zzz, mouseX, mouseY )/100)  ;
  }
    zz=mouseX;

Kalmar

And the main problem which i cant solve

      if (zz>0&&zz>0&&!keyPressed)
        {
          line(zz, zzz, mouseX, mouseY );
          distTotal2=distTotal2 + (dist( zz, zzz, mouseX, mouseY )/50) ;
        }
        zz=mouseX;
        zzz=mouseY;
      }

here i have code which build some figure, and now i want to count square if this figure i tried to multiply 1 side on other side (but it didnt wokr) and i think can be other figure circle or triangle

Chrisir

is english your 1st language?

please use more empty lines, like I do

I don't understand "now i want to count square if this figure"

Chrisir

ok, can you show your entire code please?

Do you want that the program can tell you whether you just draw a square, a triangle or a circle?

Kalmar

I know russian ukrainian and polish languages and i started lerniang elglish 1 year ago.I want to draw rect\circle or something else and count area of ​​the figure

Chrisir

No offense

Do you want to measure the size of the area enclosed by the rect?

How many pixels there are in it?

Kalmar

look i draw some figure ( circle, rect, triangle) and count are of this figure which i drew.

Chrisir

please post your entire code...

Chrisir

here... based on an old version...

boolean [] button1; 
boolean [] button2; 
int i=0, n=0, u=0; 

int countCircles, countRects;

void setup() { 
  background(250);  
  size(1250, 690);

  button1 = new boolean[1];
  button2 = new boolean[1];
}

void draw()
{
  fill(255);
  noStroke();
  rect(0, 0, 180, 32);
  fill(0);
  text ( countCircles + " circles and " + countRects +  " rects.", 14, 14);

  stroke(0);


  if (button1[i])
  { 
    fill(255, 0, 0);
  }
  else
  {
    fill(0, 255, 0);
  }

  strokeWeight(3);
  rect(330, 26, 56, 48);
  if (button2[u])
  { 
    fill(255, 0, 0);
  }
  else
  {
    fill(0, 255, 0);
  }
  strokeWeight(3);
  ellipse(450, 50, 56, 48);

  //
} // end of draw() 

void mousePressed() {
  if (dist(360, 38, mouseX, mouseY)<=32)
  {
    button1[n] = !button1[n];
    button2[n] = false; // add these two line that's all
  }   
  else if (dist(460, 58, mouseX, mouseY)<=32) {
    button2[n] = !button2[n];
    button1[n] = false;  // add these two line that's all
  }


  {
    if (button1[i])
    { 
      if ( true)
      {
        if ( mouseY>120)
        {
          strokeWeight(4);
          rect(mouseX, mouseY, 56, 48);
          countRects++;
        }
      }
    }


    if (button2[u])
    { 
      if ( true)
      {
        if ( mouseY>120)
        {
          strokeWeight(4);
          ellipse(mouseX, mouseY, 56, 48);
          countCircles++;
        }
      }
    }
  }
}

//

Kalmar

if (zz>0&&zz>0&&!keyPressed)
  {
    line(zz, zzz, mouseX, mouseY );
    distTotal2=distTotal2 + (dist( zz, zzz, mouseX, mouseY )/50) ;
  }
  zz=mouseX;
  zzz=mouseY;
}

nono look this code you can draw some line, with this line you can build some figure i want to draw rect or triangle with this lines and count area of figure

Chrisir

post your entire code