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Bounce inside a Pyramid or a Sphere

[3 Replies]
- 25-Apr-2013 11:52 AM
- Forum: Programming Questions
how can i make a ball bouncing inside a pyramid?
how can i make a ball bouncing inside a circle?

//Bouncing Ball in 3D Canvas

//Mohamed Naeim

// Press 'e' to end the code

// Press 's' to capture a pdf

// to navigate, Press rightMouseButton to zoom

// to navigate, Press LeftMouseButton to Rotate

// to navigate, Press ScrollButton to Pan

import processing.opengl.*;

import processing.pdf.*;

import peasy.test.*;

import peasy.org.apache.commons.math.*;

import peasy.*;

import peasy.org.apache.commons.math.geometry.*;

Unit[] a = new Unit[1];

Unit[] b;

Unit[] c;

int n;

int d;

PeasyCam cam;

Whitebox whitebox;

boolean saveToggle = false;

void setup() {

size(400, 400, OPENGL);

n = 10;

d = 20;

b = new Unit[n];

a[0]= new Unit(random(-100, 100), random(-100, 100), random(-100, 100), random(-5, 5), random(-5, 5), random(-5, 5), random(10, 50));

for ( int i = 0; i < n; i++) {

b[i] = new Unit(random(-100, 100), random(-100, 100), random(-100, 100), random(-5, 5), random(-5, 5), random(-5, 5),random(10, 50));

a = (Unit[])append(a, b[i]);

}

whitebox = new Whitebox();

cam = new PeasyCam(this, 1000);

cam.setMinimumDistance(50);

cam.setMaximumDistance(1500);

frameRate(30);

}

void draw() {

if (saveToggle) {

PGraphicsPDF file = (PGraphicsPDF)beginRaw(PDF, "picture3D.pdf");

file.noStroke();

file.fill(0);

file.rect(0, 0, width, height);

}

background(100);

whitebox.display();

whitebox.canvasaxis();

for (int j = 0; j < a.length; j++) {

pushMatrix();

a[j].move();

a[j].display();

popMatrix();

}

if (saveToggle) {

endRaw();

saveToggle = false;

}

}

void keyPressed() {

if (key == 'e') {

println(" got to go");

exit();

}

if ( key == 's') {

saveToggle = true;

}

}

class Unit {

PVector loc;

PVector spd;

float r;

float x, y, z;

float v, u, w;

Unit ( float v_, float u_, float w_, float x_, float y_, float z_, float r_) {

x = x_;

y = y_;

z = z_;

v = v_;

u = u_;

w = w_;

r = r_;

loc = new PVector(v, u, w);

spd = new PVector(x, y, z);

//r = 50;

}

void display() {

stroke(150,0,0);

strokeWeight(1);

noFill();

//fill(255, 100);

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

sphere(r);

}

void move() {

loc.add(spd);



if ((loc.x < (-200+(r)))&&(spd.x < 0)) {

spd.x *= -1;

}

if ((loc.y < (-200+(r)))&&(spd.y < 0)) {

spd.y *= -1;

}

if ((loc.z < (-200+(r)))&&(spd.z < 0)) {

spd.z *= -1;

}

if ((loc.x > (200-(r)))&&(spd.x > 0)) {

spd.x *= -1;

}

if ((loc.y > (200-(r)))&&(spd.y > 0)) {

spd.y *= -1;

}

if ((loc.z > (200-(r)))&&(spd.z > 0)) {

spd.z *= -1;

}

}

}

class Whitebox{



Whitebox(){

}

void display() {

stroke(255);

strokeWeight(2);

noFill();

box(400, 400, 400);

}

void canvasaxis(){



// Y-Axis Blue Line

stroke(0, 0, 255);

noFill();

rectMode(CENTER);

//rect(0, 0, 400, 400);

strokeWeight(5);

line(-500, 250, -250,

-500, 0, -250);

text("Y - Axis", -500, 0, -250);

//Z-Zxis Green Line

stroke(0, 255, 0);

noFill();

rectMode(CENTER);

rotateY(PI/2);

//rect(0, 0, 400, 400);

strokeWeight(5);

rotateY(-PI/2);

line(-500, 250, -250,

-500, 250, 0);

text("Z - Axis", -500, 250, 0);

//x-Axis Red Line

stroke(255, 0, 0);

noFill();

rectMode(CENTER);

rotateX(PI/2);

//rect(0, 0, 400, 400);

rotateX(-PI/2);

strokeWeight(5);

line(-500, 250, -250,

-250, 250, -250);

text("X - Axis", -250, 250, -250);

}

}

bounce inside triangle or Circle

[4 Replies]
- 25-Apr-2013 08:11 AM
- Forum: Programming Questions
Hi,
how can i bounce a circle inside a triangle?

or

how can i bounce a circle inside another circle?

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