PLz need some help with my first program.

retina_ma..

PLz need some help with my first program.

in Contributed Library Questions • 1 year ago

Hi there this is my first post. I am an art student in my second year, and I am currently trying to make my first installation with processing. what I am trying to do is create a program where by from the center of the screen multiple lines (branches) grow at a slow speed. Then through external sound i.e. external mic change direction. The bit i am having a lot of trouble with at the moment is creating a line that continues to grow and branch off in real time.

this is what i have got so far, i know its not even close but its something. any help would be much appreciated.

import toxi.geom.*;

import peasy.*;

PeasyCam cam;

branch sean;

void setup (){

size (600,600, P3D);

smooth();

cam = new PeasyCam(this, 100);

Vec3D v = new Vec3D (0,0,0);

Vec3D inivel = new Vec3D (1,0,0);

sean = new branch(v, inivel);

}

void draw() {

background(0);

noFill();

stroke(80);

box(600);

sean.run();

}

class branch {

Vec3D loc;

Vec3D oriLoc;

Vec3D vel;

branch(Vec3D _loc, Vec3D _vel){

loc =_loc;

oriLoc = loc.copy();

vel = _vel;

}

void run (){

display();

updateLoc();

// updateDir();

}

void updateLoc(){

loc. addSelf(vel);

}

void updateDir(){

float angle1 = radians(30);

vel. rotateZ (angle1);

}

void display(){

stroke(250,0,0);

strokeWeight(4);

point (loc.x, loc.y, loc.z);

stroke(250);

strokeWeight(1);

line (loc.x, loc.y, loc.z, oriLoc.x, oriLoc.y, oriLoc.z);

}

Replies(1)

Chrisir

Re: PLz need some help with my first program.

1 year ago

I made this...

try mouse left to add new line.

try mouse right to stop all lines.

import toxi.geom.*;
import peasy.*;
PeasyCam cam;
Branch[] branches = new Branch[333] ;
int currentMaxBranch = 1;
void setup () {
size (600, 600, P3D);
// smooth();
//
cam = new PeasyCam(this, 100);
//
Vec3D v = new Vec3D (0, 0, 0);
Vec3D inivel = new Vec3D (1, 0, 0);
branches[0] = new Branch(v, inivel);
}
// ----------
//
void draw() {
background(0);
//
noFill();
stroke(80);
box(600);
//
for (int i=0; i < currentMaxBranch; i++) {
branches[i].run();
} // for
//
} // func
//
void mousePressed() {
if (mouseButton==LEFT) {
// stop all and add new branch ***
// stop all
for (int i=0; i < currentMaxBranch; i++) {
branches[i].running=false;
} // for
// make new branch
Vec3D v = new Vec3D (0, 0, 0);
Vec3D inivel = new Vec3D (random(-1, 1), random(-1, 1), random(-1, 1));
branches[currentMaxBranch] = new Branch(v, inivel);
currentMaxBranch++;
} // if
else if (mouseButton==RIGHT)
{
// stop all
for (int i=0; i < currentMaxBranch; i++) {
branches[i].running=false;
} // for
} // else
} // func
//
void keyPressed() {
// Keyboard = stop all
for (int i=0; i < currentMaxBranch-1; i++) {
branches[i].running=false;
} // for
} // func
//
void printVector (String preText, Vec3D v) {
// print vector data
println(preText + v.x + ", " + v.x + ", " + v.z);
} // func
//
// ============================================================
//
class Branch {
//
Vec3D loc; // current location
Vec3D oriLoc; // location of origin
Vec3D vel; // direction of movement
boolean running = true; // still growing?
//
Branch(Vec3D _loc, Vec3D _vel) {
loc =_loc;
oriLoc = loc.copy();
vel = _vel;
}
//
void run () {
display();
if (running) {
updateLoc();
}
// updateDir();
}
//
void updateLoc() {
loc.addSelf(vel);
}
/*
void updateDir() {
float angle1 = radians(30);
vel.rotateZ (angle1);
}
*/
//
void display() {
if (running) {
stroke(250, 0, 0); // red
}
else {
stroke(0, 0, 250); // blue
}
strokeWeight(4);
point (loc.x, loc.y, loc.z);
stroke(250);
strokeWeight(1);
line ( oriLoc.x, oriLoc.y, oriLoc.z,
loc.x, loc.y, loc.z );
} // method
//
} // class
//

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