draw a new line at the end of last line

Programming Questions

oliver

draw a new line at the end of last line

in Programming Questions • 2 years ago

hi – i'm quite new to processing and have come accross a simple problem i'm not able to solve.

i would like to draw a very very simple random tree whereby a random line is drawn, followed by a next random line who's starting coordinates equal the ending coordinates of the last line, so that an endless, jagged line is drawn.

how can i loop the code, so that it always draws a new line linked up to the last line?

i'd be very greatful for any help or ideas.

Replies(4)

amnon.owed

Re: draw a new line at the end of last line

2 years ago

Just remember the old x and y position.

Code example:

float px,py;
int distance = 40;
void setup() {
size(500,500);
smooth();
background(255);
px = width/2;
py = height/2;
}
void draw() {
float x = px + random(-distance,distance);
float y = py + random(-distance,distance);
line(px,py,x,y);
px = x;
py = y;
}
void keyPressed() {
if (key == ' ') {
background(255);
px = width/2;
py = height/2;
}
}

braoude

Re: Re: draw a new line at the end of last line

1 years ago

Hey guys,

I'am also new to processing, the question and obviosuly the answer realy interest me and may be you can help me in a further question i'd like to resolve:

1) how can I connect a point (end/begining of the line) to the four previous one?

I hope my question makes sens

Thanks a lot in advance.

oliver

Re: draw a new line at the end of last line

2 years ago

perfect! thanks a lot for your help!

PhiLho

Re: draw a new line at the end of last line

1 years ago

@braoude (we cannot comment on comments...): just memorize the n last points in an array.

Top Reply