Hi, since four months learning Processing, at the moment I experiment with my webcam. Here is my question:

I capture my webcam and want reduce the opacity of the webcam signal but I dont know how. I guess in need a library or maybe there are another way? I hope you can give me a tip. Thanks for any help :)

Hi, I have a little question. I want that the yellow lines are half transparent in my pattern generator, but at the moment they are only transparent in the lower range. Where could be my error? Thanks for any answer or help

Code:

void setup(){

size(500,500);
}

void draw(){
  background(255,255,255);
  randomSeed(mouseX);


  int wert1 = 20;
  int wert2 = 20;

  for(int i = 0; i<wert1; i++){
  for(int j = 0; j<wert1; j++){
   
redlines(0, height/wert1*i, 500, mouseY/wert2, j*25, 0, j*25);
bluelines(0, height/wert2*i, 500, mouseY/wert1, j*25, 0, j*25);
yellowlines(width/wert2*j, 0, mouseY/wert1, 500, j*25, 0, j*25, 100);
 }
  }
}

void redlines (float x, float y, float breite, float hoehe, float rot, float gruen, float blau){
  noStroke();
  fill(255,105,105);
  rect(x,y,breite,hoehe+15);
}
void bluelines (float x, float y, float breite, float hoehe, float rot, float gruen, float blau){
  fill(105,105,252);
  rect(x,y+5,breite,hoehe+5);
  }
 
void yellowlines (float x, float y, float weite, float breite, float rot, float gruen, float blau, float trans){
  noStroke();
  fill(252,234,105, trans);
  rect(x,y,weite+12,breite);
}

Hi,

I m a little bit frustrated because I want to write a code for a pattern generator, with circles they should crossed by rectangles in the middle. But the rectangles are not in the right position and also I dont know how I can multiply them.
I know, its tiny problem, but I' m rookie.

Here is my code:

void setup(){
smooth();
size(500,500);
}

void draw(){
  background(0);
  randomSeed(mouseX);


  int wert1 = 20;
  int wert2 = 20;

  for(int i = 1; i<wert1; i++){
  for(int j = 1; j<wert1; j++){
   

form1(width/wert1*j,height/wert1*i,random(5, 35),i*25,j*25,0);;

form2(width/wert1*j,height/wert1*i,i/wert1,j/wert1,255,255,255);     
 }
  }
}

void form1(float x, float y, float r, float rot, float gruen, float blau){
  noStroke();
  fill(255,0,0);
  ellipse(x,y,r,r);
  fill(0,255,0);
  ellipse(x,y,11,11);
  }

void form2(float x, float y, float width, float height, float rot, float gruen, float blau){
  noStroke();         
  fill(255);
  rect(4,0,26,3);
  rect(0,26,3,26);
  }

Hello I am a beginner and learn for 3 weeks processing. Here is my question: I want shapes with gardients, for example a triangle with 3 or more colors. What is the right command für this problem? Thank you for answers.