How can i connect points?

Programming Questions

braoude

in Programming Questions • 1 years ago

Hey guys,

First Iam a very beginner on processing and I realy need your help.

Questions:

1)In the case below, how can I connect 1 poin t( when a line end and the other begin) to the four last one?

2) I would like to draw in 3D not only 2D.

THANK YOU IN ADVANCE

import peasy.*;

import processing.opengl.*;

float ax,ay;

int distance = 40;

void setup() {

size(500,500);

smooth();

background(255);

ax = 500/2;

ay = 500/2;

}

void draw() {

float x = ax + random(-distance,distance);

float y = ay + random(-distance,distance);

line(ax,ay,x,y);

ax = x;

ay = y;

}

void keyPressed() {

if (key == ' ') {

background(255);

ax = width/2;

ay = height/2;

}

Replies(4)

jbum

Re: How can i connect points?

1 years ago

Here I'm using an array to keep track of the last 4 points, and connecting the new point to the last 4 points. I'm not sure if this is what you were trying to accomplish, but we'll see...

Copy code

float ax,ay;
int distance = 40;
int maxPoints = 4;
PVector[] vectors = new PVector[maxPoints];
int ctr = 0;
int tctr = 0;
void setup() {
size(500,500);
smooth();
background(255);
ax = width/2;
ay = height/2;
}
void draw() {
float x = ax + random(-distance,distance);
float y = ay + random(-distance,distance);
for (int i = 0; i < min(tctr, maxPoints); ++i) {
line(vectors[i].x,vectors[i].y,x,y);
}
vectors[ctr] = new PVector(x,y);
ctr = (ctr + 1) % maxPoints;
tctr += 1;
ax = x;
ay = y;
}
void keyPressed() {
if (key == ' ') {
background(255);
tctr = 0;
ctr = 0;
ax = width/2;
ay = height/2;
}
}

braoude

Re: How can i connect points?

1 years ago

WOW AMAZING THANK YOU VERY MUCH.

I have two further questions in order to realize my project. It would amazingly amazing to have an answer.lol

1) I would like to see it in 3D with the same random proliferation on "z" . ( I already tryed with an OPENGL and a peasycam, but i am not allowed to rotate around the drawing).

2) I would like to have an organic metaball following the lines.

I hope the questions make sens >>>>

BELOW I JOINED THE FINAL RESULT I DESIGNED ON GRASSHOPPER,

(the problem with grasshopper: there is know random/loop tool like processing and the time of metaball calculation is VERY VERY VERY LONG).

IT WOULD BE AMAZING FOR THE PROJECT TO JUMP TOTALY ONTO PROCESSING, i m sure it's possible.

PS: It's the fisrt time I share my work on a blog and I'm realy happy to have a constructive disccusion with you jbum!

Jan Vanto..

Re: Re: How can i connect points?

1 years ago

If you want to achieve something similar to your grasshopper work, you can work with the Toxiclibs library ( http://toxiclibs.org/). This library works with isosurfaces to create a metaball-like effect. The higher the resolution of your metaball grid, the slower it will be. This is probably not a limitation of grasshopper.

Another library you can use to create something like this is Hemesh ( http://hemesh.wblut.com/). Check the Ref_HEC_FromFrame sketch that's included with the library to create your structure. You can make a smoother mesh from that with the CatmullClark subdividor.

braoude

Re: How can i connect points?

1 years ago

Thank you for the references!

I'll study it but it seems a bit difficult to me.

If any body knows how to implement it in my script. YOUR ARE MORE THAN WELCOME

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