Generative Art

Generative Art 1

How many Ms are printed to the console?

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for (int a = 0; a < 1; a++) {println("M");

}

A. 0

B. 1

C. 2

D. 3

E. Syntax Error

What is printed to the console on the 10th frame?

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class Agent {int x;

Agent() {x = 0;

}

void update() {x = x + 1;

}}

Agent a = new Agent();

void draw() {a.update();println(f.a);

}

A. 0

B. 1

C. 9

D. 10

E. 11

Jackson Pollock

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Generative Art

Generative art refers to art that in whole or in part has been created with the use of an autonomous system. An autonomous system in this context is generally one that is non-human and can independently determine features of an artwork that would otherwise require decisions made directly by the artist.

https://en.wikipedia.org/wiki/Generative_art

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How To Draw With Code: Casey Reashttps://youtu.be/_8DMEHxOLQE

Generative Rules

1. start at random position with random N, S, E, or W direction

2. each frame, decide if the line should turn 90° clockwise

3. draw a line of random length in current direction

4. if the line leaves the canvas, kill it and start a new one

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1

2

3 4 5 6

7

8

9 10 11

1213

14

15

die

bornborn

Example of Generated Lines

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frame numbers

line left canvas

new line is “born” here heading E

line is “born” here heading N

Lines are Drawn by an “Agent”

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class Agent {float x;float y;// 0 is N, 1 is E, 2 is S, 3 is Wint direction;boolean dead;

Agent() {...

}

void update() {...

}}

way to keep track of

direction

Lines are Drawn by an “Agent”

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Agent a;

void setup() {...

// create agenta = new Agent();

}

void draw() {// update the agenta.update();

...}

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1. start at random position with random N, S, E, or W direction

Agent() {x = random(width);y = random(height);direction = int(random(0, 5));dead = false;

}

0, 1, 2, or 3

probability of changing direction

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2. each frame, decide if the line should turn 90° clockwise

void update() {...

// decide if it changes direction if (random(100) < probTurn) { direction = (direction + 1) % 4;

}

...modulo 4

wraps direction back to 0

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3. draw a line of random length in current direction

void update() { // save current positionint px = x;int py = y;

float step = random(1, maxStep);// step in the current directionif (direction == 0) {

y -= step;} else if (direction == 1) {

x += step;} else if (direction == 2) {

y += step;} else if (direction == 3) {

x -= step;}line(px, py, x, y);

change x or y depending on

current direction

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4. if the line leaves the canvas, kill it …

void update() {...// kill if it leaves the canvasif (x < 0 || x > width || y < 0 || y > height) {

dead = true;}

… and start a new one

void draw() {...// create a new agent if this one diedif (a.dead) {

a = new Agent(); }

generative1

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start at random position with random N, S, E, or W direction

each frame, decide if the line should turn 90° clockwise

draw a line of random length in current direction

if the line leaves the canvas, kill it and start a new one

generative2

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array of line "agents"each agent has a different shade

// update the agent

for (int i = 0; i < a.length; i++) {

a[i].update();

// create a new agent if died

if (a[i].dead) {

a[i] = new Agent();

}

}

generative3

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if ends of two lines touch, give weight of thinnest line to the other and kill the thin line

add colour using shifts from a base hue

fullScreen mode

generative3

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if ends of two lines touch, give weight of thinnest line to the other and kill the thin line

// if two agents touch

for (int i = 0; i < a.length; i++) {

for (int j = i + 1; j < a.length; j++) {;

float d = dist(a[i].x, a[i].y, a[j].x, a[j].y);

if (d < threshold) {

// kill smaller one and

// give weight to other

...

}

}

}

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generative4

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trigonometry for curvy agents

float px = x;

float py = y;

l += random(-maxStep, maxStep);

x = x + l * cos(t);

y = y + l * sin(t);

line(px, py, x, y);

t += probTurn;

Glen Marshal, Metamorphosishttps://vimeo.com/1747316

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Quayola, Iconographies #81 Adoration after Botticelli- http://www.quayola.com/iconographies-81/

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John Maeda, " The 10 Morisawa Posters"- http://tdctokyo.org/eng/?award=96-97_john_maeda#

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Generative Design: MIT Media Lab Identity - https://vimeo.com/20250134

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More Generative Art

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Bohnacker, H., Gross, B., & Laub, J. (2012). Generative Design: Visualize, Program, and Create with Processing. http://www.generative-gestaltung.de/code

Pearson, M. (2011). Generative Art (1 edition). Shelter Island, NY : London: Manning Publications.https://www.manning.com/books/generative-art