Add more and more elements as the scene continue in OpenGL

Core Library Questions

fronter

Add more and more elements as the scene continue in OpenGL

in Core Library Questions • 2 years ago

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:

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;
}

Replies(5)

aux.ie

Re: Add more and more elements as the scene continue in OpenGL

2 years ago

Remove

background(255);

from your draw function and put it in your setup() function and test to see if thats what you're looking for.

Final code should be...

import processing.opengl.*;
float a;
void setup() {
size(800, 600, OPENGL);
fill(1);
noStroke();
background(255);
}
void draw() {
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;
}

fronter

Re: Add more and more elements as the scene continue in OpenGL

2 years ago

The rectangels, ends up in a mess if I do that. But I want the scene to add a rectangle one by one, if that explains it better :)

mr.t

Re: Add more and more elements as the scene continue in OpenGL

2 years ago

so you simply would like to slow it down!?

try setting the frameRate lower with frameRate(1);
either in setup or draw.
this would equal a framerate of 1 frame per second.

or you want to see the rectangles more clear?

then a strokecolor might help.

// Rectangels
fill(sin(a)*204, 502, 0);
stroke(0);
rect(-100, -100, 100, 100);

tfguy44

Re: Add more and more elements as the scene continue in OpenGL

2 years ago

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
fill(sin(a)*204, 502, 0);
fill(sin(a)*204, 202, 0);
rect(-100, -100, 100, 100);
//End rectangels
// Rectangles that appear after the sketch has been running for a while.
if( millis() > 5000){
fill(sin(a)*204, 502, 200);
fill(sin(a)*204, 202, 200);
rect(100, -100, 100, 100);
}
if( millis() > 10000){
fill(sin(a)*204, 30, 0);
fill(sin(a)*204, 30, 0);
rect(0, 0, 100, 100);
}
a += 0.01;
}

fronter

Re: Add more and more elements as the scene continue in OpenGL

2 years ago

I can try to explain it with this: Its starts with only one rectangle. And after some seconds it adds another one and so on. Is that possible to do with OpenGL?

Edit: tfguy44 got my point :) I will play around with it and add different patterns.

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