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Hover, tweeningSets, rebound, scroll time, debug

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This commit is contained in:
Tyler Hallada
2017-08-03 00:17:17 -04:00
parent 32f3166f52
commit d32e236e05
2 changed files with 207 additions and 77 deletions
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277
js/field.js
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@@ -21,25 +21,76 @@ var fpsGraphic;
var scrollDelta;
var pointShiftBiasX;
var pointShiftBiasY;
var resolution = 2;
var fpsEnabled = false;
var resolution = 1;
var debug = false;
var fpsEnabled = debug;
var allTweeningFns = [
linearTweening,
easeInSine,
easeOutSine,
easeInOutSine,
easeInQuad,
easeOutQuad,
easeInOutQuad,
easeInCubic,
easeOutCubic,
easeInOutCubic,
easeInExpo,
easeOutExpo,
easeInOutExpo,
easeInCirc,
easeOutCirc,
easeInOutCirc,
easeOutBounce,
easeInBounce,
easeInOutBounce,
easeInElastic,
easeOutElastic,
easeInOutElastic,
easeInBack,
easeOutBack,
easeInOutBack
];
var tweeningSets = {
linear: [0],
meandering: [1, 2, 3, 4, 5, 6, 7, 8, 9],
snappy: [10, 11, 12, 13, 14, 15],
bouncy: [16, 17, 18],
elastic: [19, 20, 21],
back: [22, 23, 24]
};
var click = null;
var hover = null;
var lastHover = null;
var clickEnd = false;
var clickPullRateStart = 0.02;
var clickMaxDistStart = 100;
var clickPullRateInc = 0.0005;
var clickPullRateMax = 0.1;
var clickMaxDistInc = 5;
var clickPullRateStart = 0.01;
var clickMaxDistStart = 50;
var clickPullRateInc = 0.005;
var clickPullRateMax = 0.3;
var clickMaxDistInc = 2;
var clickMaxDistMax = 5000;
var clickPullRate = clickPullRateStart;
var clickMaxDist = clickMaxDistStart;
var clickEndRebount = -10;
var clickPullRateEnd = -0.6;
var clickInertiaStart = -0.7;
var clickInertia = clickInertiaStart;
var clickInertiaEnd = 0.3;
var clickTweeningFnStart = null;
var clickTweeningFn = clickTweeningFnStart;
var clickTweeningFnEnd = 12;
var hoverPushRate = -0.05;
var hoverInertia = 0.8;
var hoverMaxDistStart = 75;
var hoverMaxDistMax = 1000;
var hoverMaxDist = hoverMaxDistStart;
var hoverTweeningFn = 5;
function randomInt (min, max) {
// inclusive of min and max
return Math.floor(Math.random() * (max - min + 1)) + min;
}
/* eslint-disable no-unused-vars */
function linearTweening (t, b, c, d) {
// t = current time
// b = start value
@@ -48,7 +99,6 @@ function linearTweening (t, b, c, d) {
return ((c * t) / d) + b;
}
/* eslint-disable no-unused-vars */
function easeOutBounce (t, b, c, d) {
if ((t /= d) < (1 / 2.75)) {
return c * (7.5625 * t * t) + b;
@@ -61,6 +111,15 @@ function easeOutBounce (t, b, c, d) {
}
}
function easeInBounce (t, b, c, d) {
return c - easeOutBounce(d - t, 0, c, d) + b;
}
function easeInOutBounce (t, b, c, d) {
if (t < d / 2) return easeInBounce(t * 2, 0, c, d) * 0.5 + b;
return easeOutBounce(t * 2 - d, 0, c, d) * 0.5 + c * 0.5 + b;
}
function easeInSine (t, b, c, d) {
return -c * Math.cos(t / d * (Math.PI / 2)) + c + b;
}
@@ -136,6 +195,22 @@ function easeInOutElastic (t, b, c, d) {
return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p) * 0.5 + c + b;
}
function easeInBack (t, b, c, d, s) {
if (s === undefined) s = 1.70158;
return c * (t /= d) * t * ((s + 1) * t - s) + b;
}
function easeOutBack (t, b, c, d, s) {
if (s === undefined) s = 1.70158;
return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b;
}
function easeInOutBack (t, b, c, d, s) {
if (s === undefined) s = 1.70158;
if ((t /= d / 2) < 1) return c / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)) + b;
return c / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2) + b;
}
function easeInCirc (t, b, c, d) {
return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b;
}
@@ -215,12 +290,21 @@ function shiftColor (color, maxShiftAmt) {
}
/* from: https://stackoverflow.com/a/17130415 */
function getMousePos (canvas, evt, res) {
var rect = canvas.getBoundingClientRect();
return {
x: Math.round((evt.clientX - rect.left) / (rect.right - rect.left) * canvas.width / res),
y: Math.round((evt.clientY - rect.top) / (rect.bottom - rect.top) * canvas.height / res)
};
function getMousePos (evt, res) {
var canvas = document.getElementsByTagName('canvas')[0];
if (canvas !== undefined) {
var rect = canvas.getBoundingClientRect();
return {
x: Math.round((evt.clientX - rect.left) / (rect.right - rect.left) * canvas.width / res),
y: Math.round((evt.clientY - rect.top) / (rect.bottom - rect.top) * canvas.height / res)
};
}
}
function distancePos (point1, point2) {
var a = point1.x - point2.x;
var b = point1.y - point2.y;
return Math.sqrt(a * a + b * b);
}
function distance (point1, point2) {
@@ -237,7 +321,7 @@ function getRandomPoints (numPoints, maxX, maxY, tweeningFns) {
y = randomInt(0, maxY - 1);
cycleStart = randomInt(0, cycleDuration - 1);
color = randomColor();
easingFn = randomInt(0, tweeningFns.length - 1);
easingFn = tweeningFns[Math.floor(Math.random() * tweeningFns.length)];
points[i] = [x, y, cycleStart, color, easingFn];
}
return points;
@@ -280,7 +364,7 @@ function shiftPoints (points, maxShiftAmt, counter, tweeningFns) {
}
points.target[i][0] = candidateX;
points.target[i][1] = candidateY;
points.target[i][4] = randomInt(0, tweeningFns.length - 1);
points.target[i][4] = tweeningFns[Math.floor(Math.random() * tweeningFns.length)];
// FIXME: buggy, makes points jump around too fast
// points.target[i][2] = shiftPointCounter(points.original[i][2], maxShiftAmt);
}
@@ -292,15 +376,26 @@ function shiftPoints (points, maxShiftAmt, counter, tweeningFns) {
return points;
}
function pullPoints (points, clickPos, pullRate, maxDist, counter) {
var xDist, yDist;
function pullPoints (points, clickPos, pullRate, inertia, maxDist, counter, resetPoints, tweeningFn) {
var xDist, yDist, xTraveled, yTraveled;
for (var i = 0; i < points.target.length; i++) {
xDist = clickPos.x - points.target[i][0];
yDist = clickPos.y - points.target[i][1];
xTraveled = clickPos.x - points.original[i][0];
yTraveled = clickPos.y - points.original[i][1];
if (Math.abs(xDist) <= maxDist && Math.abs(yDist) <= maxDist) {
points.target[i][0] += Math.round(xDist * pullRate);
points.target[i][1] += Math.round(yDist * pullRate);
if (resetPoints) {
// Good for changing directions, reset the points original positions to their current positions
points.original[i][0] = points.tweened[i][0];
points.original[i][1] = points.tweened[i][1];
}
points.target[i][0] += Math.round((xDist + (inertia * xTraveled)) * pullRate);
points.target[i][1] += Math.round((yDist + (inertia * yTraveled)) * pullRate);
points.target[i][3] = shiftColor(points.original[i][3], disconnectedColorShiftAmt * 3);
if (tweeningFn !== null) {
// Also twitch the tweening function for all affected points for additional effect
points.target[i][4] = tweeningFn;
}
}
// TODO: define these magic numbers somewhere
// If this point's cycle is near it's end, bump it up some ticks to make the animation smoother
@@ -310,9 +405,11 @@ function pullPoints (points, clickPos, pullRate, maxDist, counter) {
}
}
function redistributeCycles (points) {
function redistributeCycles (points, oldCycleDuration, cycleDuration) {
var progress;
for (var i = 0; i < points.original.length; i++) {
points.target[i][2] = randomInt(0, cycleDuration - 1);
progress = points.target[i][2] / oldCycleDuration;
points.target[i][2] = Math.round(progress * cycleDuration);
}
return points;
}
@@ -329,7 +426,7 @@ function drawPolygon (polygon, points, counter, tweeningFns) {
var i, j, easingFn, avgColor, shadedColor, connectionCount, dist, connectivity;
// calculate vectors
for (i = 0; i < points.original.length; i++) {
easingFn = tweeningFns[points.target[i][4]];
easingFn = allTweeningFns[points.target[i][4]];
points.tweened[i][0] = easingFn(relativeCounter(counter, points.target[i][2]), points.original[i][0], points.target[i][0] - points.original[i][0], cycleDuration);
points.tweened[i][1] = easingFn(relativeCounter(counter, points.target[i][2]), points.original[i][1], points.target[i][1] - points.original[i][1], cycleDuration);
}
@@ -377,10 +474,22 @@ function loop () {
if (click !== null) {
if (clickEnd) {
clickPullRate *= clickEndRebount;
clickPullRate = clickPullRateEnd;
clickInertia = clickInertiaEnd;
clickTweeningFn = clickTweeningFnEnd;
if (debug) {
polygon.lineStyle(1, 0xDC143C, 1);
polygon.drawCircle(click.x, click.y, clickMaxDist);
}
} else {
if (debug) {
polygon.lineStyle(1, 0x483D8B, 1);
polygon.drawCircle(click.x, click.y, clickMaxDist);
}
}
// a pointer event is occuring and needs to affect the points
pullPoints(polygonPoints, click, clickPullRate, clickMaxDist, counter);
pullPoints(polygonPoints, click, clickPullRate, clickInertia, clickMaxDist, counter, clickEnd, clickTweeningFn);
// slightly increase effect amount for next loop if click is still occuring
if (clickMaxDist <= clickMaxDistMax) {
@@ -395,10 +504,27 @@ function loop () {
clickEnd = false;
clickMaxDist = clickMaxDistStart;
clickPullRate = clickPullRateStart;
clickInertia = clickInertiaStart;
clickTweeningFn = clickTweeningFnStart;
}
} else if (hover !== null) {
if (lastHover !== null) {
hoverMaxDist += Math.min(Math.round(distancePos(hover, lastHover)), hoverMaxDistMax);
}
if (debug) {
polygon.lineStyle(1, 0xBDB76B, 1);
polygon.drawCircle(hover.x, hover.y, hoverMaxDist);
}
pullPoints(polygonPoints, hover, hoverPushRate, hoverInertia, hoverMaxDist, counter, false, hoverTweeningFn);
hoverMaxDist = hoverMaxDistStart;
lastHover = hover;
}
// polygon.beginFill(0x00FF00);
drawPolygon(polygon, polygonPoints, counter, tweeningFns);
// polygon.endFill();
counter += 1;
counter = counter % cycleDuration;
@@ -418,12 +544,13 @@ function loop () {
// If user scrolled, modify cycleDuration by amount scrolled
if (scrollDelta !== 0) {
cycleDuration = cycleDuration + scrollDelta;
var oldCycleDuration = cycleDuration;
cycleDuration = Math.round(cycleDuration + scrollDelta);
if (cycleDuration < 1) {
cycleDuration = 1;
}
scrollDelta = 0;
polygonPoints = redistributeCycles(polygonPoints);
polygonPoints = redistributeCycles(polygonPoints, oldCycleDuration, cycleDuration);
}
// Tell the `renderer` to `render` the `stage`
@@ -456,28 +583,7 @@ function loopStart () {
// colorShiftAmt = 80;
disconnectedColorShiftAmt = 10;
polygon = new window.PIXI.Graphics();
tweeningFns = [
linearTweening,
easeInSine,
easeOutSine,
easeInOutSine,
easeInQuad,
easeOutQuad,
easeInOutQuad,
easeInCubic,
easeOutCubic,
easeInOutCubic
// easeOutBounce,
// easeInElastic,
// easeOutElastic,
// easeInOutElastic,
// easeInExpo,
// easeOutExpo,
// easeInOutExpo,
// easeInCirc,
// easeOutCirc,
// easeInOutCirc
];
tweeningFns = tweeningSets.meandering;
startPoints = getRandomPoints(Math.round(totalScreenPixels / 6), screenWidth, screenHeight, tweeningFns);
polygonPoints = {
original: startPoints,
@@ -501,43 +607,22 @@ function loopStart () {
window.requestAnimationFrame(loop);
}
function updateClickPos (event) {
var canvas = document.getElementsByTagName('canvas')[0];
click = getMousePos(canvas, event, resolution);
}
window.onload = loopStart;
/* MOUSE AND TOUCH EVENTS */
// FIXME: buggy :(
window.addEventListener('mousewheel', function (e) {
// scrollDelta = scrollDelta + ((e.deltaY / 100) * 3);
// FIXME: buggy :(
});
window.addEventListener('mousedown', function (e) {
updateClickPos(e);
});
window.addEventListener('mousemove', function (e) {
if (click !== null) {
updateClickPos(e);
}
});
window.addEventListener('mouseup', function (e) {
clickEnd = true;
});
window.addEventListener('mouseleave', function (e) {
clickEnd = true;
scrollDelta = scrollDelta + ((e.deltaY / 100) * 3);
});
window.addEventListener('touchstart', function (e) {
updateClickPos(e.changedTouches[0]);
click = getMousePos(e.changedTouches[0], resolution);
});
window.addEventListener('touchmove', function (e) {
if (click !== null) {
updateClickPos(e.changedTouches[0]);
click = getMousePos(e.changedTouches[0], resolution);
}
});
@@ -549,6 +634,32 @@ window.addEventListener('touchcancel', function (e) {
clickEnd = true;
});
window.addEventListener('mousedown', function (e) {
click = getMousePos(e, resolution);
});
window.addEventListener('mousemove', function (e) {
var pos = getMousePos(e, resolution);
if (click !== null) {
click = pos;
}
hover = pos;
});
window.addEventListener('mouseup', function (e) {
clickEnd = true;
hover = null;
lastHover = null;
});
window.addEventListener('mouseleave', function (e) {
clickEnd = true;
hover = null;
lastHover = null;
});
/* KEYBOARD EVENTS */
window.addEventListener('keydown', function (e) {
if (e.keyCode === 37) { // left
pointShiftBiasX = -1;
@@ -558,6 +669,18 @@ window.addEventListener('keydown', function (e) {
pointShiftBiasX = 1;
} else if (e.keyCode === 40) { // down
pointShiftBiasY = 1;
} else if (e.keyCode === 49) { // 1
tweeningFns = tweeningSets.linear;
} else if (e.keyCode === 50) { // 2
tweeningFns = tweeningSets.meandering;
} else if (e.keyCode === 51) { // 3
tweeningFns = tweeningSets.snappy;
} else if (e.keyCode === 52) { // 4
tweeningFns = tweeningSets.bouncy;
} else if (e.keyCode === 53) { // 5
tweeningFns = tweeningSets.elastic;
} else if (e.keyCode === 54) { // 6
tweeningFns = tweeningSets.back;
} else if (e.keyCode === 70) { // f
// toggle fpsCounter
if (fpsEnabled) {