...
| Code Block | ||||||
|---|---|---|---|---|---|---|
| ||||||
var pos = [];
var targetPos = [];
var mousePos = [];
var arrayLength = 5;
function setup() {
createCanvas(1000, 600);
fill(0);
for (var i = 0; i< arrayLength; i++) {
pos[i] = createVector(0, 0);
targetPos[i] = createVector(0, 0);
}
mousePos = createVector(width/2, height/2);
}
function draw() {
mousePos.set(mouseX, mouseY);
background(255);
for (var i = 0; i < pos.length; i++) {
targetPos[i].set(mousePos);
targetPos[i].sub(pos[i]); // find the vector between mouse position and ellipse position
targetPos[i].mult((i*0.02) + 0.05); // each step in the animation will move this percentage of the distance to the target position
pos[i].add(targetPos[i]);
fill(125,255,23);
ellipse(pos[i].x, pos[i].y, 60, 60);
}
}
|
...
Exercise Solution Using Arrays and Classes
| Code Block | ||||||
|---|---|---|---|---|---|---|
| ||||||
let shape = [];
var arrayLength = 60;
function setup() {
createCanvas(1000, 600);
fill(0);
for (var i= 0; i < arrayLength; i++) {
shape[i] = new myShape((i*0.02) + 0.02);
}
}
function draw() {
background(255);
for (var i= 0; i < shape.length; i++) {
shape[i].update();
}
}
class myShape {
constructor(_speed) {
this.pos = createVector(0,0);
this.targetPos = createVector(0,0);
this.mousePos = createVector(width/2, height/2);
this.speed = _speed;
}
update() {
this.mousePos.set(mouseX, mouseY);
this.targetPos.set(this.mousePos);
this.targetPos.sub(this.pos); // find the vector between mouse position and ellipse position
this.targetPos.mult(this.speed); // each step in the animation will move this percentage of the distance to the target position
this.pos.add(this.targetPos);
pushMatrix();
translate(this.pos.x, this.pos.y);
rotate(calcAngle(this.pos, this.mousePos));
triangle(0,0,-5,20,5,20);
popMatrix();
}
calcAngle(p1, p2)
{
return -atan2(p1.x - p2.x,p1.y - p2.y);
}
}
|
...