Created
February 22, 2021 02:56
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Exemplo de captura baseado no filtro de video do PCD Brasil
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// Baseado no código do PCD 2021 Brasil! | |
// https://github.com/Processing-Brasil/PCD-Brasil-2021-FiltroVideo/blob/main/linhasPCD/linhasPCD.pde | |
// Obrigado Monica, Guilherme e Carlos. | |
import processing.video.*; | |
Capture video; | |
int vEspaco = 10; | |
float precisao = 2; | |
void setup() { | |
size(800, 600); | |
video = new Capture(this, width, height); | |
video.start(); | |
} | |
void captureEvent(Capture c) { | |
c.read(); | |
} | |
void draw() { | |
background(0); | |
image(video, 0, 0); | |
stroke(255); | |
strokeWeight(2); | |
video.loadPixels(); | |
float zoom = max((float)width/(float)video.width, (float)height/(float)video.height); | |
scale(zoom); | |
background(#e6e6d8); | |
noFill(); | |
float tempo = (float)frameCount / 10.0; | |
//ondas | |
stroke(#ff666c); | |
for (int y = -vEspaco; y < video.height + vEspaco; y += vEspaco * 2) { | |
float comprimento = 0; | |
beginShape(); | |
for (int x = 0; x < video.width; x += 2) { | |
float y_sin = sin(comprimento + tempo) * vEspaco * 2 + y; | |
vertex(x, y_sin); | |
comprimento += 0.1; | |
} | |
endShape(); | |
} | |
//video em frequencias | |
for (int y = 0; y < video.height; y+=vEspaco) { | |
float x = 0; | |
float _y = y; | |
float fase = noise(y) * TWO_PI; | |
noFill(); | |
stroke(#004aa3); | |
beginShape(); | |
while (x < video.width) { | |
color col = video.get(floor(x), y); | |
float r = red(col); | |
float g = green(col); | |
float b = blue(col); | |
float intensidade = 1 - ((r + g + b) / 765); | |
_y = y + sin(fase - intensidade - tempo) * vEspaco / 2 + vEspaco / 2; | |
vertex(x, _y); | |
x += precisao / (intensidade + 0.01) / 5; | |
fase += 0.5; | |
} | |
vertex(video.width, _y); | |
endShape(); | |
} | |
} | |
void keyPressed() { | |
if (key == 'a') { | |
vEspaco = vEspaco + 5; | |
} | |
if ((key == 'z') && (vEspaco > 5)) { | |
vEspaco = vEspaco - 5; | |
} | |
} |
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