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Fade text out

[6 Replies]
- 08-May-2013 02:04 PM
- Forum: Programming Questions
I have a sketch that randomly pulls words from a .txt document and places them in random spots on the sketch. I want the words to fade out after a few seconds, but can't figure out how. Here is the code:

float r;

float g;

float b;

float a;

float diam;

float x;

float y;

void setup() {

size(1280,720, P3D);

background(0);

smooth();

frameRate(2);

// textSize(30);



PFont font;

font = loadFont("SansSerif-48.vlw");

textFont(font, 40);



fill(255);

text("I'M SORRY.", 30, 50);

text("I'M HAPPY.", 30, 86);

textSize(15);

}

void draw() {

// Each time through draw(), new random numbers are picked for a new ellipse.

r = random(125,255);

g = random(125,255);

b = random(125,255);

a = random(0,255);



x = random(0,1280);

y = random(100,720);



String[] wordy=loadStrings("http://thepanthernaut.com/happyregrets/answers.txt");

//diam = random(20);

// x = random(width);

// y = random(height);



// Use values to draw an ellipse

noStroke();

fill(r,g,b,a);

int index = int (random(wordy.length));

text(wordy[index],x,y);





}

I want the words to act like they do in the following sketch, but need them to appear on the sketch more often than one at a time:

PFont font;

int counter;

final int DISPLAY_TIME = 3000; // 2000 ms = 2 seconds

int lastTime; // When the current image was first displayed

float rx = 120;

float ry = 160;

float alphaVal = 255;

float a = 1.5;

void setup() {

size(640, 480);

background(255);

font = loadFont("Calibri-48.vlw");

textFont(font);

textSize(random(22, 35));

fill(66, 190, 255);

lastTime = millis();

}

void draw()

{

background(255);

if (millis() - lastTime >= DISPLAY_TIME) // Time to display next image

{

counter = int(random(wordy.length));

textSize(random(20, 30));

rx = random(10, 220);

ry = random(10, 120);

alphaVal = 255;

lastTime = millis();

}

fill(66, 140, 255, alphaVal);

text(wordy[counter], rx, ry, 400, 300);

alphaVal -= a;



// if (alphaVal < 0 || alphaVal > 255) {

// a *= -1;

// }

}

String[] wordy=loadStrings("http://thepanthernaut.com/happyregrets/answers.txt");



Help is very appreciated!

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