Hover, tweeningSets, rebound, scroll time, debug
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267
js/field.js
267
js/field.js
@ -21,25 +21,76 @@ var fpsGraphic;
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var scrollDelta;
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var pointShiftBiasX;
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var pointShiftBiasY;
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var resolution = 2;
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var fpsEnabled = false;
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var resolution = 1;
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var debug = false;
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var fpsEnabled = debug;
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var allTweeningFns = [
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linearTweening,
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easeInSine,
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easeOutSine,
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easeInOutSine,
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easeInQuad,
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easeOutQuad,
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easeInOutQuad,
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easeInCubic,
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easeOutCubic,
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easeInOutCubic,
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easeInExpo,
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easeOutExpo,
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easeInOutExpo,
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easeInCirc,
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easeOutCirc,
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easeInOutCirc,
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easeOutBounce,
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easeInBounce,
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easeInOutBounce,
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easeInElastic,
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easeOutElastic,
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easeInOutElastic,
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easeInBack,
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easeOutBack,
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easeInOutBack
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];
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var tweeningSets = {
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linear: [0],
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meandering: [1, 2, 3, 4, 5, 6, 7, 8, 9],
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snappy: [10, 11, 12, 13, 14, 15],
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bouncy: [16, 17, 18],
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elastic: [19, 20, 21],
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back: [22, 23, 24]
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};
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var click = null;
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var hover = null;
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var lastHover = null;
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var clickEnd = false;
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var clickPullRateStart = 0.02;
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var clickMaxDistStart = 100;
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var clickPullRateInc = 0.0005;
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var clickPullRateMax = 0.1;
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var clickMaxDistInc = 5;
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var clickPullRateStart = 0.01;
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var clickMaxDistStart = 50;
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var clickPullRateInc = 0.005;
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var clickPullRateMax = 0.3;
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var clickMaxDistInc = 2;
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var clickMaxDistMax = 5000;
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var clickPullRate = clickPullRateStart;
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var clickMaxDist = clickMaxDistStart;
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var clickEndRebount = -10;
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var clickPullRateEnd = -0.6;
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var clickInertiaStart = -0.7;
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var clickInertia = clickInertiaStart;
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var clickInertiaEnd = 0.3;
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var clickTweeningFnStart = null;
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var clickTweeningFn = clickTweeningFnStart;
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var clickTweeningFnEnd = 12;
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var hoverPushRate = -0.05;
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var hoverInertia = 0.8;
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var hoverMaxDistStart = 75;
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var hoverMaxDistMax = 1000;
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var hoverMaxDist = hoverMaxDistStart;
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var hoverTweeningFn = 5;
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function randomInt (min, max) {
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// inclusive of min and max
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return Math.floor(Math.random() * (max - min + 1)) + min;
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}
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/* eslint-disable no-unused-vars */
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function linearTweening (t, b, c, d) {
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// t = current time
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// b = start value
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@ -48,7 +99,6 @@ function linearTweening (t, b, c, d) {
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return ((c * t) / d) + b;
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}
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/* eslint-disable no-unused-vars */
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function easeOutBounce (t, b, c, d) {
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if ((t /= d) < (1 / 2.75)) {
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return c * (7.5625 * t * t) + b;
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@ -61,6 +111,15 @@ function easeOutBounce (t, b, c, d) {
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}
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}
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function easeInBounce (t, b, c, d) {
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return c - easeOutBounce(d - t, 0, c, d) + b;
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}
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function easeInOutBounce (t, b, c, d) {
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if (t < d / 2) return easeInBounce(t * 2, 0, c, d) * 0.5 + b;
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return easeOutBounce(t * 2 - d, 0, c, d) * 0.5 + c * 0.5 + b;
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}
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function easeInSine (t, b, c, d) {
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return -c * Math.cos(t / d * (Math.PI / 2)) + c + b;
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}
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@ -136,6 +195,22 @@ function easeInOutElastic (t, b, c, d) {
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return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p) * 0.5 + c + b;
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}
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function easeInBack (t, b, c, d, s) {
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if (s === undefined) s = 1.70158;
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return c * (t /= d) * t * ((s + 1) * t - s) + b;
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}
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function easeOutBack (t, b, c, d, s) {
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if (s === undefined) s = 1.70158;
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return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b;
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}
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function easeInOutBack (t, b, c, d, s) {
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if (s === undefined) s = 1.70158;
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if ((t /= d / 2) < 1) return c / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)) + b;
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return c / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2) + b;
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}
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function easeInCirc (t, b, c, d) {
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return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b;
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}
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@ -215,12 +290,21 @@ function shiftColor (color, maxShiftAmt) {
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}
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/* from: https://stackoverflow.com/a/17130415 */
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function getMousePos (canvas, evt, res) {
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function getMousePos (evt, res) {
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var canvas = document.getElementsByTagName('canvas')[0];
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if (canvas !== undefined) {
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var rect = canvas.getBoundingClientRect();
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return {
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x: Math.round((evt.clientX - rect.left) / (rect.right - rect.left) * canvas.width / res),
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y: Math.round((evt.clientY - rect.top) / (rect.bottom - rect.top) * canvas.height / res)
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};
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}
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}
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function distancePos (point1, point2) {
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var a = point1.x - point2.x;
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var b = point1.y - point2.y;
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return Math.sqrt(a * a + b * b);
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}
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function distance (point1, point2) {
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@ -237,7 +321,7 @@ function getRandomPoints (numPoints, maxX, maxY, tweeningFns) {
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y = randomInt(0, maxY - 1);
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cycleStart = randomInt(0, cycleDuration - 1);
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color = randomColor();
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easingFn = randomInt(0, tweeningFns.length - 1);
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easingFn = tweeningFns[Math.floor(Math.random() * tweeningFns.length)];
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points[i] = [x, y, cycleStart, color, easingFn];
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}
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return points;
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@ -280,7 +364,7 @@ function shiftPoints (points, maxShiftAmt, counter, tweeningFns) {
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}
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points.target[i][0] = candidateX;
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points.target[i][1] = candidateY;
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points.target[i][4] = randomInt(0, tweeningFns.length - 1);
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points.target[i][4] = tweeningFns[Math.floor(Math.random() * tweeningFns.length)];
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// FIXME: buggy, makes points jump around too fast
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// points.target[i][2] = shiftPointCounter(points.original[i][2], maxShiftAmt);
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}
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@ -292,15 +376,26 @@ function shiftPoints (points, maxShiftAmt, counter, tweeningFns) {
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return points;
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}
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function pullPoints (points, clickPos, pullRate, maxDist, counter) {
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var xDist, yDist;
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function pullPoints (points, clickPos, pullRate, inertia, maxDist, counter, resetPoints, tweeningFn) {
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var xDist, yDist, xTraveled, yTraveled;
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for (var i = 0; i < points.target.length; i++) {
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xDist = clickPos.x - points.target[i][0];
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yDist = clickPos.y - points.target[i][1];
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xTraveled = clickPos.x - points.original[i][0];
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yTraveled = clickPos.y - points.original[i][1];
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if (Math.abs(xDist) <= maxDist && Math.abs(yDist) <= maxDist) {
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points.target[i][0] += Math.round(xDist * pullRate);
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points.target[i][1] += Math.round(yDist * pullRate);
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if (resetPoints) {
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// Good for changing directions, reset the points original positions to their current positions
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points.original[i][0] = points.tweened[i][0];
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points.original[i][1] = points.tweened[i][1];
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}
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points.target[i][0] += Math.round((xDist + (inertia * xTraveled)) * pullRate);
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points.target[i][1] += Math.round((yDist + (inertia * yTraveled)) * pullRate);
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points.target[i][3] = shiftColor(points.original[i][3], disconnectedColorShiftAmt * 3);
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if (tweeningFn !== null) {
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// Also twitch the tweening function for all affected points for additional effect
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points.target[i][4] = tweeningFn;
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}
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}
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// TODO: define these magic numbers somewhere
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// If this point's cycle is near it's end, bump it up some ticks to make the animation smoother
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@ -310,9 +405,11 @@ function pullPoints (points, clickPos, pullRate, maxDist, counter) {
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}
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}
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function redistributeCycles (points) {
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function redistributeCycles (points, oldCycleDuration, cycleDuration) {
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var progress;
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for (var i = 0; i < points.original.length; i++) {
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points.target[i][2] = randomInt(0, cycleDuration - 1);
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progress = points.target[i][2] / oldCycleDuration;
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points.target[i][2] = Math.round(progress * cycleDuration);
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}
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return points;
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}
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@ -329,7 +426,7 @@ function drawPolygon (polygon, points, counter, tweeningFns) {
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var i, j, easingFn, avgColor, shadedColor, connectionCount, dist, connectivity;
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// calculate vectors
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for (i = 0; i < points.original.length; i++) {
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easingFn = tweeningFns[points.target[i][4]];
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easingFn = allTweeningFns[points.target[i][4]];
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points.tweened[i][0] = easingFn(relativeCounter(counter, points.target[i][2]), points.original[i][0], points.target[i][0] - points.original[i][0], cycleDuration);
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points.tweened[i][1] = easingFn(relativeCounter(counter, points.target[i][2]), points.original[i][1], points.target[i][1] - points.original[i][1], cycleDuration);
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}
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@ -377,10 +474,22 @@ function loop () {
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if (click !== null) {
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if (clickEnd) {
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clickPullRate *= clickEndRebount;
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clickPullRate = clickPullRateEnd;
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clickInertia = clickInertiaEnd;
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clickTweeningFn = clickTweeningFnEnd;
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if (debug) {
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polygon.lineStyle(1, 0xDC143C, 1);
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polygon.drawCircle(click.x, click.y, clickMaxDist);
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}
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} else {
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if (debug) {
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polygon.lineStyle(1, 0x483D8B, 1);
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polygon.drawCircle(click.x, click.y, clickMaxDist);
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}
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}
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// a pointer event is occuring and needs to affect the points
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pullPoints(polygonPoints, click, clickPullRate, clickMaxDist, counter);
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pullPoints(polygonPoints, click, clickPullRate, clickInertia, clickMaxDist, counter, clickEnd, clickTweeningFn);
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// slightly increase effect amount for next loop if click is still occuring
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if (clickMaxDist <= clickMaxDistMax) {
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@ -395,10 +504,27 @@ function loop () {
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clickEnd = false;
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clickMaxDist = clickMaxDistStart;
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clickPullRate = clickPullRateStart;
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clickInertia = clickInertiaStart;
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clickTweeningFn = clickTweeningFnStart;
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}
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} else if (hover !== null) {
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if (lastHover !== null) {
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hoverMaxDist += Math.min(Math.round(distancePos(hover, lastHover)), hoverMaxDistMax);
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}
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if (debug) {
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polygon.lineStyle(1, 0xBDB76B, 1);
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polygon.drawCircle(hover.x, hover.y, hoverMaxDist);
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}
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pullPoints(polygonPoints, hover, hoverPushRate, hoverInertia, hoverMaxDist, counter, false, hoverTweeningFn);
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hoverMaxDist = hoverMaxDistStart;
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lastHover = hover;
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}
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// polygon.beginFill(0x00FF00);
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drawPolygon(polygon, polygonPoints, counter, tweeningFns);
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// polygon.endFill();
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counter += 1;
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counter = counter % cycleDuration;
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@ -418,12 +544,13 @@ function loop () {
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// If user scrolled, modify cycleDuration by amount scrolled
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if (scrollDelta !== 0) {
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cycleDuration = cycleDuration + scrollDelta;
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var oldCycleDuration = cycleDuration;
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cycleDuration = Math.round(cycleDuration + scrollDelta);
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if (cycleDuration < 1) {
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cycleDuration = 1;
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}
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scrollDelta = 0;
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polygonPoints = redistributeCycles(polygonPoints);
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polygonPoints = redistributeCycles(polygonPoints, oldCycleDuration, cycleDuration);
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}
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// Tell the `renderer` to `render` the `stage`
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@ -456,28 +583,7 @@ function loopStart () {
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// colorShiftAmt = 80;
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disconnectedColorShiftAmt = 10;
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polygon = new window.PIXI.Graphics();
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tweeningFns = [
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linearTweening,
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easeInSine,
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easeOutSine,
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easeInOutSine,
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easeInQuad,
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easeOutQuad,
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easeInOutQuad,
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easeInCubic,
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easeOutCubic,
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easeInOutCubic
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// easeOutBounce,
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// easeInElastic,
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// easeOutElastic,
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// easeInOutElastic,
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// easeInExpo,
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// easeOutExpo,
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// easeInOutExpo,
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// easeInCirc,
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// easeOutCirc,
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// easeInOutCirc
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];
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tweeningFns = tweeningSets.meandering;
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startPoints = getRandomPoints(Math.round(totalScreenPixels / 6), screenWidth, screenHeight, tweeningFns);
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polygonPoints = {
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original: startPoints,
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@ -501,43 +607,22 @@ function loopStart () {
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window.requestAnimationFrame(loop);
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}
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function updateClickPos (event) {
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var canvas = document.getElementsByTagName('canvas')[0];
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click = getMousePos(canvas, event, resolution);
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}
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window.onload = loopStart;
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/* MOUSE AND TOUCH EVENTS */
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// FIXME: buggy :(
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window.addEventListener('mousewheel', function (e) {
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// scrollDelta = scrollDelta + ((e.deltaY / 100) * 3);
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// FIXME: buggy :(
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});
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window.addEventListener('mousedown', function (e) {
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updateClickPos(e);
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});
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window.addEventListener('mousemove', function (e) {
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if (click !== null) {
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updateClickPos(e);
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}
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});
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window.addEventListener('mouseup', function (e) {
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clickEnd = true;
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});
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window.addEventListener('mouseleave', function (e) {
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clickEnd = true;
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scrollDelta = scrollDelta + ((e.deltaY / 100) * 3);
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});
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window.addEventListener('touchstart', function (e) {
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updateClickPos(e.changedTouches[0]);
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click = getMousePos(e.changedTouches[0], resolution);
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});
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window.addEventListener('touchmove', function (e) {
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if (click !== null) {
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updateClickPos(e.changedTouches[0]);
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click = getMousePos(e.changedTouches[0], resolution);
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}
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});
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@ -549,6 +634,32 @@ window.addEventListener('touchcancel', function (e) {
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clickEnd = true;
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});
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window.addEventListener('mousedown', function (e) {
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click = getMousePos(e, resolution);
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});
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window.addEventListener('mousemove', function (e) {
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var pos = getMousePos(e, resolution);
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if (click !== null) {
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click = pos;
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}
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hover = pos;
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});
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window.addEventListener('mouseup', function (e) {
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clickEnd = true;
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hover = null;
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lastHover = null;
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});
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window.addEventListener('mouseleave', function (e) {
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clickEnd = true;
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hover = null;
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lastHover = null;
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});
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/* KEYBOARD EVENTS */
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window.addEventListener('keydown', function (e) {
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if (e.keyCode === 37) { // left
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pointShiftBiasX = -1;
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@ -558,6 +669,18 @@ window.addEventListener('keydown', function (e) {
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pointShiftBiasX = 1;
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} else if (e.keyCode === 40) { // down
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pointShiftBiasY = 1;
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} else if (e.keyCode === 49) { // 1
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tweeningFns = tweeningSets.linear;
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} else if (e.keyCode === 50) { // 2
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tweeningFns = tweeningSets.meandering;
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} else if (e.keyCode === 51) { // 3
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tweeningFns = tweeningSets.snappy;
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} else if (e.keyCode === 52) { // 4
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tweeningFns = tweeningSets.bouncy;
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} else if (e.keyCode === 53) { // 5
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tweeningFns = tweeningSets.elastic;
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} else if (e.keyCode === 54) { // 6
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tweeningFns = tweeningSets.back;
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} else if (e.keyCode === 70) { // f
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// toggle fpsCounter
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if (fpsEnabled) {
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7
notes.md
7
notes.md
@ -14,3 +14,10 @@ Click events:
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* Continue with drawPolygon
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Make a better points data structure with x and y keys.
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For debugging, display a line of the intended path for each point.
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* Run the whole tween function in one tick, drawing a single pixel along
|
||||
|
||||
If lines make a connected polygon, shade the inside of it with the average color
|
||||
of all vertices composing the polygon. The more distant the points (and the
|
||||
larger the polygon) the more dark the color is shaded.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user