I`m trying to find a way to start a effect that I made in this code to make the twisted "hole" that spins around the wire after some seconds or so. I can`t figure out what to place in the code and where.  Here is the code:

1. int pts = 30; //Speed of the
   float angle = 0;
   float radius = 90.0; //Size of the wire
   
   // lathe segments
   int segments = 60;
   float latheAngle = 100;
   float latheRadius = 50.50; //Twist inside the twist (MUST NOT BE OVER A RADIUS OF 1000!!! It will results in fatal error)
   //vertices
   PVector vertices[], vertices2[];
   
   // for shaded or wireframe rendering
   boolean isWireFrame =true; //transparent wire
   
   // for optional helix
   boolean isHelix = true; // Stretched wire
   float helixOffset = 10; // Lenght of the twist
   
   void setup(){
     size(1400, 2400, P3D);
   }
   
   void draw(){
     background(00,00,00,00);
     // basic lighting setup
     lights();
     // 2 rendering styles
     // wireframe or solid
     if (isWireFrame){
       stroke(211, 105, 3); // Color of the wire
       noFill();
     }
     else {
       noStroke();
       fill(150, 195, 145);
     }
     //center and spin toroid
     translate(width/2, height/200, -500);
   
     rotateX(frameCount*PI/250);
     rotateY(frameCount*PI/580);
     rotateZ(frameCount*PI/190);
   
     // initialize point arrays
     vertices = new PVector[pts+10];
     vertices2 = new PVector[pts+6000];// Twist of the
   
     // fill arrays
     for(int i=0; i<=pts; i++){
       vertices[i] = new PVector();
       vertices2[i] = new PVector();
       vertices[i].x = latheRadius + sin(radians(angle))*radius;
       if (isHelix){
         vertices[i].z = cos(radians(angle))*radius-(helixOffset*
           segments)/600000; // Starting spin effect
       }
       else{
         vertices[i].z = cos(radians(angle))*radius;
       }
       angle+=340.0/pts; // Twist effect
     }
   
     // draw toroid
     latheAngle = 0;
     for(int i=0; i<=segments; i++){
       beginShape(QUAD_STRIP);
       for(int j=0; j<=pts; j++){
         if (i>0){
           vertex(vertices2[j].x, vertices2[j].y, vertices2[j].z);
         }
         vertices2[j].x = cos(radians(latheAngle))*vertices[j].x;
         vertices2[j].y = sin(radians(latheAngle))*vertices[j].x; //Trying to make a cool effect with the shape
         vertices2[j].z = vertices[j].z;
         // optional helix offset
         if (isHelix){
           vertices[j].z+=helixOffset;
         }
         vertex(vertices2[j].x, vertices2[j].y, vertices2[j].z);
       }
       // create extra rotation for helix
       if (isHelix){
         latheAngle+=770.10/segments;
       }
       else {
         latheAngle+=330.20/segments;
       }
       endShape();
     }
   }
   
   
   
   
   
   
   
   
   
   
   
   
   

Thanks for any help in advance! :)

My code starts with:

1. import processing.opengl.*;
2. float a;
3.        
4. void setup() {
5.   size(500, 500, OPENGL);
6.   fill(#F6D81E);
7.   noStroke();
8.  
9. }

I have a 2D object wich I rotate with

1. void draw() {
2.   background(90);
3.   translate(width/2, height/2);
4.   rotateX(a);
5.   rotateY(a*5);
6.   rotateX(PI/5);

This is my object:

1.   rect(20, 20, 20, 20);
     rect(20, 20, 20, 20);
   

And then I want a little spotlight that moves around the scene. Is that possible? I tried

1. Set the view transform Push the matrix stack Set the model transform to update the light’s position Set the light position //glLightfv(GL_LIGHT_POSITION,…) Pop the matrix stack Send down the scene or model geometry Swap buffers.

But that didn`t worked. Any help would be great!

Thanks in advance :)

Now I have started on a new project. I want the scene to add more and more elements as a rectangel, by it self as the scene continue. If someone know what I mean :)  Hope someone can help me out. My code so far:

1. import processing.opengl.*;
   
   float a;
                 
   void setup() {
     size(800, 600, OPENGL);
     fill(1);
     noStroke();
   }
   
   
   void draw() {
     background(255);
     translate(width/2, height/2);
     rotateX(a);
     rotateY(a*3 );
    
     //Start rotate angels //
     rotateX(a);
     rotateY(a*5);
     rotateX(PI/2);
     rotateY(a*0);
     rotateY(a*1);
     rotate(a*1);
     rotateY(a*1);
     rotateY(a*0);
     rotateX(PI/2);
     rotateX(a);
     rotateY(a*1);
     rotateX(PI/2);
     rotateY(a*1);
     rotateY(a*1);
     // End rotate angels //
    
    
     // Rectangels
     rect(-100, -100, 100, 100);
     fill(sin(a)*204, 502, 0);
     fill(sin(a)*204, 202, 0);
     //End rectangels
    
    
    
     a += 0.01;
   }
   

Is this possible?

I want a zoom effect on my scene and I`m wondering if it is a zoom code for OpenGL in processing. I still work on this project:

1. import processing.opengl.*;
   
   float a;
                 
   void setup() {
     size(200, 200, OPENGL);
     fill(0);
     noStroke();
   }
   
     void draw() {
     background(900);
     translate(width/2, height/2);
     rotateX(a);
     rotateY(a*5);
     rotateX(PI/2);
     rotateY(a*10);
     rotateY(a*1);
     rotate(a*5);
     rotateY(a*1);
     rotateY(a*10);
    
    
   
    
     rect(20, 20, -20, 20); fill(sin(a)*100+178);
     rect(20, 20, -20, 20); fill(sin(a)*200+300);
     rect(50, 20, -20, 20); fill(sin(a)*100+100);
     rect(20, 50, -20, 20); fill(sin(a)*100+100);
    
     rect(-20, 20, -20, 20);
     rect(-20, 20, -20, 20);fill(sin(a)*100+100);
     rect(-50, 20, -20, 20);fill(sin(a)*100+100);
     rect(-20, 50, -20, 20);
    
     rect(-20, 20, -20, 20);fill(sin(a)*100+178);
     rect(-20, 20, -20, 20);fill(sin(a)*200+300);
     rect(-50, 20, -20, 20);fill(sin(a)*100+100);
     rect(-20, 50, -20, 20);fill(sin(a)*100+100);
    
     rect(20, 20, 20, -20);
     rect(20, 20, 20, -20); fill(sin(a)*500+500);
     rect(-50, 20, 20, -20); fill(sin(a)*500+500);
     rect(20, 20, 20, -20);
    
   
    
   a -= 0.01;
   }
   
      
   Thanks for any help :)
   
   

Hi! I am very new to Processing, and to this forum. I have a question for my OpenGL code.