Width and Height.

The ‘width’ and ‘height’ variables contain the width and height of the display window as defined in the size() function.

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void setup() {
  size(640, 360);
}

void draw() {
  background(127);
  noStroke();
  for (int i = 0; i < height; i += 20) {
    fill(129, 206, 15);
    rect(0, i, width, 10);
    fill(255);
    rect(i, 0, 10, height);
  }
}

Functions Used

fill()

Sets the color used to fill shapes

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size()

Defines the dimension of the display window width and height in units of pixels

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rect()

Draws a rectangle to the screen

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setup()

The setup() function is run once, when the program starts

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draw()

Called directly after setup(), the draw() function continuously executes the lines of code contained inside its block until the program is stopped or noLoop() is called

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noStroke()

Disables drawing the stroke (outline)

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background()

The background() function sets the color used for the background of the Processing window

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