i hate arrays. attention to mister blindfishy

Programming Questions

infinite00

i hate arrays. attention to mister blindfishy

in Programming Questions • 2 years ago

hey blindfish i noticed how you have been helping a lot of beginners with their work. i would post a forum but i need help fast bc i have so much stuff to do to this code. This a assignment where i am going to use x[] and y [] to integrate it into minim to create sound. with my code every time i press the different stroke weight to change it in draw. the icon is affected by the strokes so im trying to make a array with strokes [] but it isnt working:

int points = 5000;

int [] x;

int [] y;

int [] drawnC;

int [] strokes;

int index = 0;

color drawing = color (0,0,0);

color[] c = new color [10];

void setup() {

size(600, 600);

x = new int[points];

y = new int[points];

drawnC = new int[points];

strokes = new int[points];

c [0] = color (0, 0, 0);

c [1] = color (255, 0, 0);

c [2] = color (255, 125, 0);

c [3] = color (255, 255, 0);

c [4] = color (0, 255, 0);

c [5] = color (0, 0, 255);

c [6] = color (142, 47, 180);

c [7] = color (255, 0, 222);

c [8] = color (125, 125, 125);

c [9] = color (255, 255, 255);

}

void draw() {

background(255);

makeToolbox();

makeLines();

}

void makeToolbox() {

// for color icons

int i = 0;

int s = 20;

stroke (0);

for (int y = 0; y < 405 ; y += 30) {

if (i <= 9) {

// draw boxes

fill (c[i]);

i = i + 1;

rect (0, y, 30, 30);

}

else {

// draw stroke size circle

fill(255);

rect (0, y, 30, 30);

fill (drawing);

ellipse (15, y + 15, s, s);

s = s - 5;

}

void makeLines() {

strokeWeight(1);

stroke(drawing);

if ( mousePressed == true ) {

if ( mouseX > 30 || mouseY > 435) {

x[index] = mouseX;

y[index] = mouseY;

drawnC[index] = drawing;

strokes[index] = drawing;

index = index + 1;

if ( index >= points ) {

index = 0;

}

for (int i = 1; i < index; i = i + 1 ) {

stroke(drawnC[i]);

line(x[i-1], y[i-1], x[i], y[i]);

}

void mouseClicked() {

println(mouseX + " " + mouseY);

if(mouseX < 30 && mouseY < 285) {

int colorIndex = int( mouseY/30 );

drawing = c[colorIndex];

}

if(mouseX > 5 && mouseX < 25 && mouseY > 300 && mouseY < 330 ) {

strokeWeight (20);

}

if(mouseX > 5 && mouseX < 25 && mouseY > 330 && mouseY < 360 ) {

strokeWeight (14);

}

if(mouseX > 5 && mouseX < 25 && mouseY > 360 && mouseY < 390 ) {

strokeWeight (7);

}

if(mouseX > 5 && mouseX < 25 && mouseY > 390 && mouseY < 420 ) {

strokeWeight (1);

}

Replies(5)

bjordal

Re: i hate arrays. attention to mister blindfishy

2 years ago

if i understand correctly you don't want the stroke of your icons to be effected by the pen-stroke.
if so then using pushStyle() and popStyle() should do the trick:

void makeToolbox() {
// for color icons
int i = 0;
int s = 20;
pushStyle();
strokeWeight(1);
stroke (0);
for (int y = 0; y < 405 ; y += 30) {
    if (i <= 9) {
      // draw boxes
      fill (c[i]);
      i = i + 1;
      rect (0, y, 30, 30);
    }else {
      // draw stroke size circle
      fill(255);
      rect (0, y, 30, 30);
      fill (drawing);
      ellipse (15, y + 15, s, s);
      s = s - 5;
    }
}
popStyle();
}

however as you can see changing the strokeWeight will effect all your drawn lines which is probably something you don't want.

edit: ooh right i forgot this:

void makeLines() {
stroke(drawing);
if ( mousePressed) {
    if ( mouseX > 30 || mouseY > 435) {
      x[index] = mouseX;
      y[index] = mouseY;
      drawnC[index] = drawing;
      strokes[index] = drawing;
      index = index + 1;

      if ( index >= points ) {
        index = 0;
      }
    }
}
for (int i = 1; i < index; i = i + 1 ) {
    stroke(drawnC[i]);
    line(x[i-1], y[i-1], x[i], y[i]);
}
}

infinite00

Re: Re: i hate arrays. attention to mister blindfishy

2 years ago

thank you thank you bjordal. it worked but how can i save each point weight when the point is drawn on the board with the strokes array.

bjordal

Re: i hate arrays. attention to mister blindfishy

2 years ago

i guess you could just create another array to keep track of the strokeweight or you could move on to creating a class that contains the mouse x and y and color and width (strokeweight) for each point.

blindfish

Re: i hate arrays. attention to mister blindfishy

2 years ago

As you have seen if you post a question on the forum you're likely to get a response more quickly than if you send a PM to a single individual who might be in a different time zone ;)

On the surface your problem seems a bit tricky. You could perhaps get around it using an array of strokeWeights, but when you start using that many arrays it's probably time to start thinking about Objects or an alternative approach. Also using an array of points to draw lines you're going to run into problems fairly quickly. For a start when you reach the end of your array you start deleting lines that have been drawn previously.

If you were just creating a simple drawing application I'd suggest just removing the background() call from draw() and do away with the arrays altogether (see your amended code below). And my suspicion is that you might still be able to do that, depending on how you intend to use the stored x/y coordinates to create sound...

Would each line generate a sound? Would this sound be repeated? Even if it is you'd probably create an instance of a sound in Minim and wouldn't need to repeatedly create it using stored variables... I think you might need to provide a bit more info on what you're hoping to achieve ;)

color drawing = color (0,0,0);
color[] c = new color [10];
void setup() {
size(600, 600);
c [0] = color (0, 0, 0);
c [1] = color (255, 0, 0);
c [2] = color (255, 125, 0);
c [3] = color (255, 255, 0);
c [4] = color (0, 255, 0);
c [5] = color (0, 0, 255);
c [6] = color (142, 47, 180);
c [7] = color (255, 0, 222);
c [8] = color (125, 125, 125);
c [9] = color (255, 255, 255);
}
void draw() {
makeToolbox();
makeLines();
}
void makeToolbox() {
// for color icons
int i = 0;
int s = 20;
pushStyle();
strokeWeight(1);
stroke (0);
for (int y = 0; y < 405 ; y += 30) {
if (i <= 9) {
// draw boxes
fill (c[i]);
i = i + 1;
rect (0, y, 30, 30);
}else {
// draw stroke size circle
fill(255);
rect (0, y, 30, 30);
fill (drawing);
ellipse (15, y + 15, s, s);
s = s - 5;
}
}
popStyle();
}
void makeLines() {
stroke(drawing);
if ( mousePressed) {
if ( mouseX > 30 || mouseY > 435) {
line(pmouseX, pmouseY, mouseX, mouseY);
}
}
}
void mouseClicked() {
if(mouseX < 30 && mouseY < 285) {
int colorIndex = int( mouseY/30 );
drawing = c[colorIndex];
}
if(mouseX > 5 && mouseX < 25 && mouseY > 300 && mouseY < 330 ) {
strokeWeight (20);
}
if(mouseX > 5 && mouseX < 25 && mouseY > 330 && mouseY < 360 ) {
strokeWeight (14);
}
if(mouseX > 5 && mouseX < 25 && mouseY > 360 && mouseY < 390 ) {
strokeWeight (7);
}
if(mouseX > 5 && mouseX < 25 && mouseY > 390 && mouseY < 420 ) {
strokeWeight (1);
}
}

infinite00

Re: Re: i hate arrays. attention to mister blindfishy

2 years ago

i was planning to maybe making a new sineWave and adding that to the line out with out.addSignal by using the color to set the frequency in the sineWave() and using the

stroke to set the volume or something .... through out.setGain() .? it just a project i am kind of making as i go since every time i actually plan something it doesn't really work. super frustrating.

import ddf.minim.*;

import ddf.minim.signals.*;

Minim minim;

AudioOutput out;

SineWave sine; // set to 440Hz 0.5 amplitude

boolean SoundPlaying = false;

int points = 5000;

int [] x;

int [] y;

int [] drawnC;

int [] strokes;

int index = 0;

color drawing = color (0,0,0);

color[] c = new color [10];

void setup() {

size(600, 600);

x = new int[points];

y = new int[points];

drawnC = new int[points];

strokes = new int[points];

c [0] = color (0, 0, 0);

c [1] = color (255, 0, 0);

c [2] = color (255, 125, 0);

c [3] = color (255, 255, 0);

c [4] = color (0, 255, 0);

c [5] = color (0, 0, 255);

c [6] = color (142, 47, 180);

c [7] = color (255, 0, 222);

c [8] = color (125, 125, 125);

c [9] = color (255, 255, 255);

minim = new Minim(this); //gives sound engine and gives sketch to minim

out = minim.getLineOut(Minim.STEREO, 2048); // gets a line out and writes to speaker

out.addSignal(sine); //connects ocsillator to speaker connection

}

void draw() {

background(255);

makeToolbox();

makeLines();

if (SoundPlaying==true) {

playSound();

}

void makeToolbox() {

// for color icons

int i = 0;

int s = 20;

pushStyle();

strokeWeight(1);

stroke (0);

for (int y = 0; y < 405 ; y += 30) {

if (i <= 9) {

// draw boxes

fill (c[i]);

i = i + 1;

rect (0, y, 30, 30);

}

else {

// draw stroke size circle

fill(255);

rect (0, y, 30, 30);

fill (drawing);

ellipse (15, y + 15, s, s);

s = s - 5;

}

popStyle();

}

void makeLines() {

stroke(drawing);

if ( mousePressed == true ) {

if ( mouseX > 30 || mouseY > 435) {

x[index] = mouseX;

y[index] = mouseY;

drawnC[index] = drawing;

strokes [index] = drawing;

index = index + 1;

if ( index >= points ) {

index = 0;

}

for (int i = 1; i < index; i = i + 1 ) {

stroke(drawnC[i]);

line(x[i-1], y[i-1], x[i], y[i]);

}

void playSound() {

//something with the Hz_the action

sine = new SineWave(440, 0.5, out.sampleRate());

// creates a Oscillator <set to 440Hz 0.5 amplitude/sample rate 44100 to match the line out>

}

void keyPressed() {

if ( key == ' ' ) {

SoundPlaying = true;

}

void mouseClicked() {

println(mouseX + " " + mouseY);

if(mouseX < 30 && mouseY < 285) {

int colorIndex = int( mouseY/30 );

drawing = c[colorIndex];

}

if(mouseX > 5 && mouseX < 25 && mouseY > 300 && mouseY < 330 ) {

strokeWeight (20);

}

if(mouseX > 5 && mouseX < 25 && mouseY > 330 && mouseY < 360 ) {

strokeWeight (14);

}

if(mouseX > 5 && mouseX < 25 && mouseY > 360 && mouseY < 390 ) {

strokeWeight (7);

}

if(mouseX > 5 && mouseX < 25 && mouseY > 390 && mouseY < 420 ) {

strokeWeight (1);

}

// always close Minim and close speakers to prevent crashing

void stop() {

out.close();

minim.stop();

super.stop();

}

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