Created
October 8, 2018 19:58
-
-
Save LadyScream/4877fda0e95fed1ae34c3473febefe1e to your computer and use it in GitHub Desktop.
3D Pendulum tracing a path
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
boolean recording = false; | |
ArrayList<Pendulum> pendulums; | |
int frame; | |
float time; | |
void setup(){ | |
size(720, 720, P3D); | |
pendulums = new ArrayList<Pendulum>(); | |
pendulums.add(new Pendulum(0, 0, 0, 150, PI/64, PI/32)); | |
pendulums.add(new Pendulum(pendulums.get(pendulums.size()-1), 75, PI/64, PI/128)); | |
pendulums.add(new Pendulum(pendulums.get(pendulums.size()-1), 37.5, PI/256, PI/128)); | |
time = 0; | |
frame = 1; | |
} | |
void draw(){ | |
if (time < TWO_PI || !recording){ | |
background(28); | |
translate(width/2, height/2, 0); | |
//rotateX(map(mouseY, 0, height, -PI, PI)); | |
//rotateY(map(mouseX, 0, width, -PI, PI)); | |
rotateX(PI/4); | |
rotateZ(sin(time)*PI); | |
for (int i = 0; i < pendulums.size(); i++){ | |
pendulums.get(i).update(); | |
stroke(255, 200); | |
fill(255, 100); | |
if (i == pendulums.size() - 1) { | |
stroke(255); | |
strokeWeight(3); | |
pendulums.get(i).shape.draw(); | |
println(pendulums.get(i).shape.vertexes.size()); | |
fill(255, 200, 200); | |
} | |
pendulums.get(i).draw(); | |
} | |
time += TWO_PI/513; | |
if (recording) save(frame+".gif"); | |
frame++; | |
} | |
} | |
class Pendulum{ | |
float cx, cy, cz, px, py, pz, size; | |
float theta, phi, tc, pc; | |
Pendulum parent; | |
Shape shape; | |
Pendulum(float xa, float ya, float za, float sizea, float tca, float pca){ | |
cx = xa; | |
cy = ya; | |
cz = za; | |
size = sizea; | |
tc = tca; | |
pc = pca; | |
shape = new Shape(); | |
} | |
Pendulum(Pendulum parenta, float sizea, float tca, float pca){ | |
size = sizea; | |
tc = tca; | |
pc = pca; | |
shape = new Shape(); | |
parent = parenta; | |
cx = parent.px; | |
cy = parent.py; | |
cz = parent.pz; | |
theta = parent.theta; | |
phi = parent.phi; | |
} | |
void update(){ | |
px = size * sin(theta) * cos(phi); | |
py = size * sin(theta) * sin(phi); | |
pz = size * cos(theta); | |
theta += tc; | |
phi += pc; | |
if (parent != null) { | |
px = size * sin(theta+parent.theta) * cos(phi+parent.phi); | |
py = size * sin(theta+parent.theta) * sin(phi+parent.phi); | |
pz = size * cos(theta+parent.theta); | |
cx = parent.px; | |
cy = parent.py; | |
cz = parent.pz; | |
} | |
if (parent != null){ | |
shape.addPoint(new PVector(parent.cx+px+cx, parent.cy+py+cy, parent.cz+pz+cz)); | |
} else { | |
shape.addPoint(new PVector(cx+px, cy+py, cz+pz)); | |
} | |
theta = theta % TWO_PI; | |
phi = phi % TWO_PI; | |
} | |
void draw(){ | |
pushMatrix(); | |
if (parent == null) { | |
translate(cx, cy, cz); | |
} else { | |
translate(parent.px+parent.cx, parent.py+parent.cy, parent.pz+parent.cz); | |
} | |
strokeWeight(1); | |
line(0, 0, 0, px, py, pz); | |
noStroke(); | |
translate(px, py, pz); | |
sphere(5); | |
popMatrix(); | |
} | |
} | |
class Shape{ | |
ArrayList<PVector> vertexes; | |
Shape(){ | |
vertexes = new ArrayList<PVector>(); | |
} | |
void addPoint(PVector p){ | |
vertexes.add(p); | |
} | |
void draw(){ | |
beginShape(); | |
noFill(); | |
stroke(255, 200, 200); | |
for(PVector p: vertexes){ | |
vertex(p.x, p.y, p.z); | |
} | |
endShape(); | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment