Alec Albright – Project 03 – Dynamic Drawing

sketch

// Alec Albright
// Section B
// Project 3

var margin = 150;
var radius = 30;
var r = 0;
var g = 0;
var b = 0;
var rotation = 0;

function setup(){
    createCanvas(640, 480);
    angleMode(DEGREES);
}

function draw(){
    background("white");
    fill(r, g, b);

    // mapping angle of rotation to mouseY
    // as mouse moves up and down, shapes rotate
    rotation = map(mouseY, 0, height, 0, 360);

    // drawing hexagons with specified margin and rotation
    // center
    push();
    translate(width / 2, height / 2);
    rotate(rotation);
    hexagon(0, 0, radius);
    pop();
    // circle around center hexagon
    for(let i = 0; i < nvertex; i +=1){
        // finding exactly where the hexagon at hand is located
        // sin tells us where the y coordinate is
        var centerY = sin(angle) * margin;
        // cos tells us where the x coordinate is
        var centerX = cos(angle) * margin;
        // now draw the vertex at hand
        // setting up rotation for each individual hexagon
        push();
        translate(width / 2 + centerX, height / 2 + centerY);
        rotate(rotation);
        hexagon(centerX, centerY, radius);
        pop();
        // add the next portion of the angle
        angle = angle + (360 / 6)
    }
    
    // scaling mouseX to use the whole screen for size
    // as mouse moves right, shapes get bigger
    radius = map(mouseX, 0, width, 20, 70);
    
    // scaling color using whole screen
    // as mouse moves right, more red
    r = map(mouseX, 0, width, 0, 255);
    // as mouse moves down, more blue
    b = map(mouseY, 0, height, 0, 255);
    // as mouse moves left, more green
    g = 255 - map(mouseX, 0, width, 0, 255);

    // margin depends on mouseX, keeping same distance throughout
    margin = map(mouseX, 0, width, 50, 150);
}

// 6 vertices, as a hexagon has
var nvertex = 6;
// angle we're working at (when we get to TWO_PI, we're done)
var angle = 0;

function hexagon(x, y, radius){
    // draw a hexagon at (x, y) using beginShape()
    beginShape();
    // find each vertex's specific location
    for(let i = 0; i < nvertex; i += 1){
        // finding exactly where the vertex at hand is located
        // sin tells us where the y coordinate is
        var vertexY = y + sin(angle) * radius;
        // cos tells us where the x coordinate is
        var vertexX = x + cos(angle) * radius;
        // now draw the vertex at hand
        vertex(vertexX, vertexY)
        // add the next portion of the angle
        angle += (360 / 6)
    }
    // connect beginning and end points
    endShape(CLOSE)
}

My process for creating this visualization was most difficult in implementing a rotational element. The colors were fairly easily scaled, the size and distance were a bit more difficult, but adding the rotation was a long experiment that I eventually figured out, resulting in this very cool kaleidoscope effect!