Help for a method code please, beggin' you ^^'

Programming Questions

strawberr..

Help for a method code please, beggin' you ^^'

in Programming Questions • 1 years ago

Hello everybody !!

I'm a very beginner, so i begin to understand the loops..
I tried to use a "method" to draw every ellipses i made with my four loops but it didn't work ...
I give a name : for example " void ..... (){" to each one and write names of method like "...(); in the "void draw" and nothing happened

I tried also with ' void mousePressed' to change the color ; to turn the red dark points into red and the red into dark point but i think i miss something and i would like to have the possibilty of making grow the circles if the mouse is Pressed...

This is my code , can you help me please ?

//declaration des variables
float x1 = 0;
float y1 = 0 ;
float xxl = 250;
float yyl = 250;
float intx = 10;
float inty= 10;
float size = 50;
float i = 0;
float j = 0;

void setup()
{
size(400,300);
smooth();
ellipseMode(CENTER);

}

void draw()
{
background(255);

//cercles
    for (int x1 = 0; x1 < 500; x1 = x1+100) {
for (int y1 = 0; y1 < 500; y1 = y1+100) {
    fill(255);
    strokeWeight(2);
    stroke(252,8,8);
ellipse(x1,y1,size,size);

}
}
// petits pois rouges
for (int xx1 = 50; xx1 < 500; xx1 = xx1+100) {
for (int yy1 = 50; yy1 < 500; yy1 = yy1+100) {
    fill(252,8,8);
    noStroke();
ellipse(xx1,yy1,size-30,size-30);
}
}
// intérieurs roses
for (int intx = 0; intx < 500;intx = intx+100) {
for (int inty = 0; inty < 500; inty = inty+100) {
   fill (255,200,200);
    noStroke();
ellipse(intx,inty,size-10,size-8);

}
}
//pois foncés
for (float i = 50; i < 400; i = i+50) {
for (float j = 50; j < 300; j = j+50) {
    fill(139,6,39);
    noStroke();
ellipse(i,j,size-40,size-40);
}
}

}

Replies(6)

tech37

Re: Help for a method code please, beggin' you ^^'

1 years ago

Re-edit post :

Your code work. But I don't understand why your variables are float...??? And you re-declare again inside the for() function has int. Can you choose int instead for all your variables. And don't re-declare them. If you plan to declare variables in your for() function, don't declare them outside unless they are use as global variable.

Anyway here a re-design of your code; go ahead, try this code. I included a mousePressed() function. The program work. It will simply change the color inside of the big circle. I still don't know the color code yet.

I hope it help a bit.

edit : So you want to change color Dark Red to Red, and Red to Dark Red. I figure out the color code of the fill (red, green, blue) function. It use a Red, Green , Blue level for your color. So simply change those value. I use Tools --> color selector in the Processing IDE.

The program is tested and worked.

int size = 50;
// color code for Dark Red
int valueR = 139;
int valueG = 6
int valueB = 39;
void setup()
{
size(400,300);
smooth();
ellipseMode(CENTER);

}

void draw()
{
background(255);

//cercles
    for (int x1 = 0; x1 < 500; x1 = x1+100) {
for (int y1 = 0; y1 < 500; y1 = y1+100) {
    fill(255);
    strokeWeight(2);
    stroke(252,8,8);
ellipse(x1,y1,size,size);

}
}
// petits pois rouges
for (int xx1 = 50; xx1 < 500; xx1 = xx1+100) {
for (int yy1 = 50; yy1 < 500; yy1 = yy1+100) {
    fill(252,8,8);
    noStroke();
ellipse(xx1,yy1,size-30,size-30);
}
}
// intérieurs roses
for (int intx = 0; intx < 500;intx = intx+100) {
for (int inty = 0; inty < 500; inty = inty+100) {
   fill (value,200,200);
    noStroke();
ellipse(intx,inty,size-10,size-8);

}
}
//pois foncés
for (int i = 50; i < 400; i = i+50) {
for (int j = 50; j < 300; j = j+50) {
    fill(valueR,valueG,valueB); // <-- The color code change
    noStroke();
ellipse(i,j,size-40,size-40);
}
}

}

void mousePressed() {
if(valueR == 139) {
// color Code for red
valueR = 252;
valueG = 8;
valueB = 8;
} else {
// put dark red back
valueR = 139;
valueG = 6;
valueB = 39;
}
}

strawberr..

Re: Help for a method code please, beggin' you ^^'

1 years ago

Hey
Thank you so much for the method mousepressed ! I understand better , i used float but int is good i agree..
I would like draw my ellipses with a method .

I tried for : //cercles
    for (int x1 = 0; x1 < 500; x1 = x1+100) {
for (int y1 = 0; y1 < 500; y1 = y1+100) {
    fill(255);
    strokeWeight(2);
    stroke(252,8,8);
ellipse(x1,y1,size,size);

this -------------------------------->

in void setup(){
cercles ();

in void draw (){
void cercles(){
for (int x1 = 0; x1 < 500; x1 = x1+100) {
for (int y1 = 0; y1 < 500; y1 = y1+100) {
    fill(255);
    strokeWeight(2);
    stroke(252,8,8);
ellipse(x1,y1,size,size);

but it appears "unexpected token void"

can you understand why it doesn't work ?

Thanks you again for answering me ^^

quarks

Re: Re: Help for a method code please, beggin' you ^^'

1 years ago

You are trying to define a method called cercles inside the draw method and this is not permitted. Create the method outside draw then call the method frm draw e.g.

void draw (){
cercles();
} // end of draw method
void cercles(){
for (int x1 = 0; x1 < 500; x1 = x1+100) {
for (int y1 = 0; y1 < 500; y1 = y1+100) {
fill(255);
strokeWeight(2);
stroke(252,8,8);
ellipse(x1,y1,size,size);
}
}
}

strawberr..

Re: Help for a method code please, beggin' you ^^'

1 years ago

Yes, i just understand it ...
so i rewrote my code like this :

    int size = 50;
    // color code for Dark Red
int valueR = 139;
int valueG = 6;
int valueB = 39;

    int value=100;

    void setup()
    {
      size(400,300);
      smooth();
      ellipseMode(CENTER);
    background(255);
    }

    void draw()
    {
      cercle();

    }
     //cercles
     void cercle(){
        for (int x1 = 0; x1 < 500; x1 = x1+100) {
      for (int y1 = 0; y1 < 500; y1 = y1+100) {
        fill(255);
        strokeWeight(2);
        stroke(252,8,8);
      ellipse(x1,y1,size,size);
      }
        }

       for (int xx1 = 50; xx1 < 500; xx1 = xx1+100) {
for (int yy1 = 50; yy1 < 500; yy1 = yy1+100) {
    fill(252,8,8);
    noStroke();
ellipse(xx1,yy1,size-30,size-30);
}
        }
for (int intx = 0; intx < 500;intx = intx+100) {
for (int inty = 0; inty < 500; inty = inty+100) {
   fill (255,200,200);
    noStroke();
ellipse(intx,inty,size-10,size-8);
}
      }
for (float i = 50; i < 400; i = i+50) {
for (float j = 50; j < 300; j = j+50) {
    fill(139,6,39);
    noStroke();
ellipse(i,j,size-40,size-40);
}

}
   }
   void mousePressed() {
if(valueR == 139) {
    // color Code for red
    valueR = 252;
    valueG = 8;
    valueB = 8;
} else {
    // put dark red back
    valueR = 139;
    valueG = 6;
    valueB = 39;

}
}

but the void mousepressed doesn't work anymore, i thinks i'm really bewildered, sorry ^^
why the void mousepressed isn't active when i load the code ?

quarks

Re: Re: Help for a method code please, beggin' you ^^'

1 years ago

If you try the code below you will see that your mouse pressed function is being executed.

void mousePressed() {
println("Mouse pressed");
if (valueR == 139) {
// color Code for red
valueR = 252;
valueG = 8;
valueB = 8;
}
else {
// put dark red back
valueR = 139;
valueG = 6;
valueB = 39;
}
}

The problem is that you aren't using the values valueR, valueG and valueB to set the fill/stroke colour in the cercle() method.

tech37

Re: Help for a method code please, beggin' you ^^'

1 years ago

I tried also with ' void mousePressed' to change the color ; to turn the red dark points into red and the red into dark point but i think i miss something and i would like to have the possibilty of making grow the circles if the mouse is Pressed...

quarks is correct. Here your modify code changing color of the big circle ( le gros cercle ) and the size. Look at void cercles(), If I want to change something, I have to init the values first, put the variables inside the function you want to change and place the new variables inside the void mousePressed(). Just look at this code. I hope you understand.

Here a sample of the code. What I did is simply put variable inside the function I want to change.

//declaration des variables <-- init the variables
int sizeA = 50;
int sizeB = 50;

int valueR=252;
int valueG=8;
int valueB=8;

void setup()
{
size(400,300);
smooth();
ellipseMode(CENTER);

}

void draw()
{
background(255);
cercles();
}
void cercles()
{
    for (int x1 = 0; x1 < 500; x1 = x1+100)

{
for (int y1 = 0; y1 < 500; y1 = y1+100)

{
    fill(255);
    strokeWeight(2);
    stroke(valueR,valueG,valueB); // <-- The color of the circle
ellipse(x1,y1,sizeA,sizeB); // the shape of the circle

}
}
}

void mousePressed()

{

println("The button of the mouse is pressed");
if(valueR == 252)
{ // put an oval and the color green
    valueR = 45;
    valueG = 250;
    valueB = 5;
    sizeA = 80;
    sizeB = 35;
}

else
{ // put a circle and color red
    valueR = 252;
    valueG = 8;
    valueB = 8;
    sizeA = 50;
    sizeB = 50;
}
}

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