From 7eac4894ed68b01656e6cbe717bf7d7e570a71d9 Mon Sep 17 00:00:00 2001 From: Tyler Hallada Date: Sun, 7 May 2017 20:44:46 -0400 Subject: [PATCH] Some cleaning up and organization, eslint --- .eslintrc.json | 12 + .eslintrc.yml | 4 + style.css => css/style.css | 4 + index.html | 7 +- js/easingFunctions.js | 111 +++++++++ js/field.js | 455 +++++++++++++++++++++++++++++++++++++ js/tutorial.js | 129 +++++++++++ notes.md | 5 + package.json | 24 ++ tutorial.js | 129 ----------- 10 files changed, 748 insertions(+), 132 deletions(-) create mode 100644 .eslintrc.json create mode 100644 .eslintrc.yml rename style.css => css/style.css (53%) create mode 100644 js/easingFunctions.js create mode 100644 js/field.js create mode 100644 js/tutorial.js create mode 100644 notes.md create mode 100644 package.json delete mode 100644 tutorial.js diff --git a/.eslintrc.json b/.eslintrc.json new file mode 100644 index 0000000..c2928fa --- /dev/null +++ b/.eslintrc.json @@ -0,0 +1,12 @@ +{ + "parserOptions": { + "ecmaVersion": 6, + "sourceType": "module", + "ecmaFeatures": { + "jsx": true + } + }, + "rules": { + "semi": "always" + } +} diff --git a/.eslintrc.yml b/.eslintrc.yml new file mode 100644 index 0000000..99ca42f --- /dev/null +++ b/.eslintrc.yml @@ -0,0 +1,4 @@ +extends: standard +plugins: + - standard + - promise diff --git a/style.css b/css/style.css similarity index 53% rename from style.css rename to css/style.css index dc02150..64880ab 100644 --- a/style.css +++ b/css/style.css @@ -2,3 +2,7 @@ padding: 0; margin: 0; } + +html { + overflow: hidden; +} diff --git a/index.html b/index.html index e8ff138..e3961b4 100644 --- a/index.html +++ b/index.html @@ -1,10 +1,11 @@ - Pixi.js stuff - + Proximity Structures + + - + diff --git a/js/easingFunctions.js b/js/easingFunctions.js new file mode 100644 index 0000000..e5b262e --- /dev/null +++ b/js/easingFunctions.js @@ -0,0 +1,111 @@ + +// These functions are taken from: https://github.com/danro/jquery-easing/blob/master/jquery.easing.js +// (with slight modifications to the function signatures) + +function linearTweening (t, b, c, d) { + // t = current time + // b = start value + // c = change in value + // d = duration + return ((c * t) / d) + b +} + +function easeOutBounce (t, b, c, d) { + if ((t /= d) < (1 / 2.75)) { + return c * (7.5625 * t * t) + b + } else if (t < (2 / 2.75)) { + return c * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75) + b + } else if (t < (2.5 / 2.75)) { + return c * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375) + b + } else { + return c * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375) + b + } +} + +function easeInSine (t, b, c, d) { + return -c * Math.cos(t / d * (Math.PI / 2)) + c + b +} + +function easeOutSine (t, b, c, d) { + return c * Math.sin(t / d * (Math.PI / 2)) + b +} + +function easeInOutSine (t, b, c, d) { + return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b +} + +function easeInQuad (t, b, c, d) { + return c * (t /= d) * t + b +} + +function easeOutQuad (t, b, c, d) { + return -c * (t /= d) * (t - 2) + b +} + +function easeInOutQuad (t, b, c, d) { + if ((t /= d / 2) < 1) return c / 2 * t * t + b + return -c / 2 * ((--t) * (t - 2) - 1) + b +} + +function easeInCubic (t, b, c, d) { + return c * (t /= d) * t * t + b +} + +function easeOutCubic (t, b, c, d) { + return c * ((t = t / d - 1) * t * t + 1) + b +} + +function easeInOutCubic (t, b, c, d) { + if ((t /= d / 2) < 1) return c / 2 * t * t * t + b + return c / 2 * ((t -= 2) * t * t + 2) + b +} + +function easeInExpo (t, b, c, d) { + return (t == 0) ? b : c * Math.pow(2, 10 * (t / d - 1)) + b +} + +function easeOutExpo (t, b, c, d) { + return (t == d) ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b +} + +function easeInOutExpo (t, b, c, d) { + if (t == 0) return b + if (t == d) return b + c + if ((t /= d / 2) < 1) return c / 2 * Math.pow(2, 10 * (t - 1)) + b + return c / 2 * (-Math.pow(2, -10 * --t) + 2) + b +} + +function easeInElastic (t, b, c, d) { + var s = 1.70158; var p = 0; var a = c + if (t == 0) return b; if ((t /= d) == 1) return b + c; if (!p) p = d * 0.3 + if (a < Math.abs(c)) { a = c; var s = p / 4 } else var s = p / (2 * Math.PI) * Math.asin(c / a) + return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b +} + +function easeOutElastic (t, b, c, d) { + var s = 1.70158; var p = 0; var a = c + if (t == 0) return b; if ((t /= d) == 1) return b + c; if (!p) p = d * 0.3 + if (a < Math.abs(c)) { a = c; var s = p / 4 } else var s = p / (2 * Math.PI) * Math.asin(c / a) + return a * Math.pow(2, -10 * t) * Math.sin((t * d - s) * (2 * Math.PI) / p) + c + b +} + +function easeInOutElastic (t, b, c, d) { + var s = 1.70158; var p = 0; var a = c + if (t == 0) return b; if ((t /= d / 2) == 2) return b + c; if (!p) p = d * (0.3 * 1.5) + if (a < Math.abs(c)) { a = c; var s = p / 4 } else var s = p / (2 * Math.PI) * Math.asin(c / a) + if (t < 1) return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b + return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p) * 0.5 + c + b +} + +function easeInCirc (t, b, c, d) { + return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b +} + +function easeOutCirc (t, b, c, d) { + return c * Math.sqrt(1 - (t = t / d - 1) * t) + b +} + +function easeInOutCirc (t, b, c, d) { + if ((t /= d / 2) < 1) return -c / 2 * (Math.sqrt(1 - t * t) - 1) + b + return c / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b +} diff --git a/js/field.js b/js/field.js new file mode 100644 index 0000000..3728bb1 --- /dev/null +++ b/js/field.js @@ -0,0 +1,455 @@ +var renderer, + stage, + screenWidth, + screenHeight, + counter, + totalScreenPixels, + cycleDuration, + connectionDistance, + connectionLimit, + pointShiftDistance, + colorShiftAmt, + disconnectedColorShiftAmt, + polygon, + startPoints, + polygonPoints, + tweeningFns, + lastLoop, + thisLoop, + fps, + fpsGraphic, + scrollDelta, + pointShiftBiasX, + pointShiftBiasY + +function randomInt (min, max) { + // inclusive of min and max + return Math.floor(Math.random() * (max - min + 1)) + min +} + +function linearTweening (t, b, c, d) { + // t = current time + // b = start value + // c = change in value + // d = duration + return ((c * t) / d) + b +} + +function easeOutBounce (t, b, c, d) { + if ((t /= d) < (1 / 2.75)) { + return c * (7.5625 * t * t) + b + } else if (t < (2 / 2.75)) { + return c * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75) + b + } else if (t < (2.5 / 2.75)) { + return c * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375) + b + } else { + return c * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375) + b + } +} + +function easeInSine (t, b, c, d) { + return -c * Math.cos(t / d * (Math.PI / 2)) + c + b +} + +function easeOutSine (t, b, c, d) { + return c * Math.sin(t / d * (Math.PI / 2)) + b +} + +function easeInOutSine (t, b, c, d) { + return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b +} + +function easeInQuad (t, b, c, d) { + return c * (t /= d) * t + b +} + +function easeOutQuad (t, b, c, d) { + return -c * (t /= d) * (t - 2) + b +} + +function easeInOutQuad (t, b, c, d) { + if ((t /= d / 2) < 1) return c / 2 * t * t + b + return -c / 2 * ((--t) * (t - 2) - 1) + b +} + +function easeInCubic (t, b, c, d) { + return c * (t /= d) * t * t + b +} + +function easeOutCubic (t, b, c, d) { + return c * ((t = t / d - 1) * t * t + 1) + b +} + +function easeInOutCubic (t, b, c, d) { + if ((t /= d / 2) < 1) return c / 2 * t * t * t + b + return c / 2 * ((t -= 2) * t * t + 2) + b +} + +function easeInExpo (t, b, c, d) { + return (t == 0) ? b : c * Math.pow(2, 10 * (t / d - 1)) + b +} + +function easeOutExpo (t, b, c, d) { + return (t == d) ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b +} + +function easeInOutExpo (t, b, c, d) { + if (t == 0) return b + if (t == d) return b + c + if ((t /= d / 2) < 1) return c / 2 * Math.pow(2, 10 * (t - 1)) + b + return c / 2 * (-Math.pow(2, -10 * --t) + 2) + b +} + +function easeInElastic (t, b, c, d) { + var s = 1.70158; var p = 0; var a = c + if (t == 0) return b; if ((t /= d) == 1) return b + c; if (!p) p = d * 0.3 + if (a < Math.abs(c)) { a = c; var s = p / 4 } else var s = p / (2 * Math.PI) * Math.asin(c / a) + return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b +} + +function easeOutElastic (t, b, c, d) { + var s = 1.70158; var p = 0; var a = c + if (t == 0) return b; if ((t /= d) == 1) return b + c; if (!p) p = d * 0.3 + if (a < Math.abs(c)) { a = c; var s = p / 4 } else var s = p / (2 * Math.PI) * Math.asin(c / a) + return a * Math.pow(2, -10 * t) * Math.sin((t * d - s) * (2 * Math.PI) / p) + c + b +} + +function easeInOutElastic (t, b, c, d) { + var s = 1.70158; var p = 0; var a = c + if (t == 0) return b; if ((t /= d / 2) == 2) return b + c; if (!p) p = d * (0.3 * 1.5) + if (a < Math.abs(c)) { a = c; var s = p / 4 } else var s = p / (2 * Math.PI) * Math.asin(c / a) + if (t < 1) return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b + return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p) * 0.5 + c + b +} + +function easeInCirc (t, b, c, d) { + return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b +} + +function easeOutCirc (t, b, c, d) { + return c * Math.sqrt(1 - (t = t / d - 1) * t) + b +} + +function easeInOutCirc (t, b, c, d) { + if ((t /= d / 2) < 1) return -c / 2 * (Math.sqrt(1 - t * t) - 1) + b + return c / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b +} + +// from: http://stackoverflow.com/a/5624139 +// modified to return integer literal +function rgbToHex (color) { + return parseInt(((1 << 24) + (color.r << 16) + (color.g << 8) + color.b).toString(16).slice(1), 16) +} + +/* Choose a random RGB color */ +function randomColor () { + return { + r: Math.floor(Math.random() * (255 + 1)), + g: Math.floor(Math.random() * (255 + 1)), + b: Math.floor(Math.random() * (255 + 1)) + } +} + +/* Find the average of two RGB colors and return one RGB of that color */ +function averageColor (color1, color2) { + return { + r: Math.round((color1.r + color2.r) / 2), + g: Math.round((color1.g + color2.g) / 2), + b: Math.round((color1.b + color2.b) / 2) + } +} + +/* + * Find the average of two RGB colors where color1 is weighted against color2 by the given weight. + * weight is a decimal between 0 and 1. + */ +function weightedAverageColor (color1, color2, weight) { + return { + r: Math.round(((color1.r * (2 * weight)) + (color2.r * (2 * (1 - weight)))) / 2), + g: Math.round(((color1.g * (2 * weight)) + (color2.g * (2 * (1 - weight)))) / 2), + b: Math.round(((color1.b * (2 * weight)) + (color2.b * (2 * (1 - weight)))) / 2) + } +} + +/* Darken the color by a factor of 0 to 1, where 1 is black and 0 is white */ +function shadeColor (color, shadeFactor) { + return { + r: Math.round(color.r * (1 - shadeFactor)), + g: Math.round(color.g * (1 - shadeFactor)), + b: Math.round(color.b * (1 - shadeFactor)) + } +} + +/* Given a color component (red, green, or blue int), randomly shift by configurable amount */ +function shiftColorComponent (component, maxShiftAmt) { + var shiftAmt = randomInt(maxShiftAmt * -1, maxShiftAmt), + newComponent = component + shiftAmt + if ((newComponent < 0) || (newComponent > 255)) { + newComponent = component - shiftAmt + } + return newComponent +} + +/* Randomly shift a RGB color by a configurable amount and return new RGB color */ +function shiftColor (color, maxShiftAmt) { + return { + r: shiftColorComponent(color.r, maxShiftAmt), + g: shiftColorComponent(color.g, maxShiftAmt), + b: shiftColorComponent(color.b, maxShiftAmt) + } +} + +function distance (point1, point2) { + var a = point1[0] - point2[0] + var b = point1[1] - point2[1] + return Math.sqrt(a * a + b * b) +} + +function getRandomPoints (numPoints, maxX, maxY, tweeningFns) { + var points = [], + i, x, y, cycleStart, easingFn + for (i = 0; i < numPoints; i++) { + x = randomInt(0, maxX - 1) + y = randomInt(0, maxY - 1) + cycleStart = randomInt(0, cycleDuration - 1) + color = randomColor() + easingFn = randomInt(0, tweeningFns.length - 1) + points[i] = [x, y, cycleStart, color, easingFn] + } + return points +} + +function shiftPointCounter (original, maxShiftAmt) { + var shiftAmt = randomInt(maxShiftAmt * -1, 0), + newCounter = original + shiftAmt + if (newCounter < 0) { + newCounter = cycleDuration + shiftAmt + } + return newCounter +} + +function shiftPoints (points, maxShiftAmt, counter, tweeningFns) { + var i, shiftX, shiftY, candidateX, candidateY + for (i = 0; i < points.original.length; i++) { + if (points.target[i][2] >= cycleDuration) { + // cycleDuration was reduced and now this point's cycle is out of bounds. Randomly pick a new valid one. + points.target[i][2] = randomInt(0, cycleDuration - 1) + } + if (points.target[i][2] === counter) { + points.original[i] = points.target[i].slice() + shiftX = randomInt(maxShiftAmt * -1, maxShiftAmt) + shiftY = randomInt(maxShiftAmt * -1, maxShiftAmt) + if (((shiftX < 0) && (pointShiftBiasX === 1)) || ((shiftX > 0) && (pointShiftBiasX === -1))) { + shiftX = shiftX * -1 + } + if (((shiftY < 0) && (pointShiftBiasY === 1)) || ((shiftY > 0) && (pointShiftBiasY === -1))) { + shiftY = shiftY * -1 + } + candidateX = points.original[i][0] + shiftX + candidateY = points.original[i][1] + shiftY + if ((candidateX > screenWidth) || (candidateX < 0)) { + candidateX = points.original[i][0] - shiftX + } + if ((candidateY > screenHeight) || (candidateY < 0)) { + candidateY = points.original[i][1] - shiftY + } + points.target[i][0] = candidateX + points.target[i][1] = candidateY + points.target[i][4] = randomInt(0, tweeningFns.length - 1) + // FIXME: buggy, makes points jump around too fast + // points.target[i][2] = shiftPointCounter(points.original[i][2], maxShiftAmt); + } + } + // clear pointShiftBiases now that they have been "used" + pointShiftBiasX = 0 + pointShiftBiasY = 0 + + return points +} + +function redistributeCycles (points) { + for (i = 0; i < points.original.length; i++) { + points.target[i][2] = randomInt(0, cycleDuration - 1) + } + return points +} + +function relativeCounter (counter, targetStart) { + var relCounter = counter - targetStart + if (relCounter < 0) { + return cycleDuration + relCounter + } + return relCounter +} + +function drawPolygon (polygon, points, counter, tweeningFns) { + var i, j, easingFn, avgColor, connectionCount, dist, proximity + // calculate vectors + for (i = 0; i < points.original.length; i++) { + easingFn = tweeningFns[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) + } + // draw lines + for (i = 0; i < points.original.length; i++) { + connectionCount = 0 + for (j = i + 1; j < points.original.length; j++) { + // TODO pick the N (connectionLimit) closest connections instead of the first N that occur sequentially. + if (connectionCount >= connectionLimit) break + dist = distance(points.tweened[i], points.tweened[j]) + connectivity = dist / connectionDistance + if ((j !== i) && (dist <= connectionDistance)) { + // find average color of both points + if ((points.tweened[i][2] === counter) || (points.tweened[j][2] === counter)) { + // avgColor = shiftColor(avgColor, Math.round(colorShiftAmt * (1 - connectivity))); + points.tweened[i][3] = weightedAverageColor(points.tweened[i][3], points.tweened[j][3], connectivity) + points.tweened[j][3] = weightedAverageColor(points.tweened[j][3], points.tweened[i][3], connectivity) + } + avgColor = averageColor(points.tweened[i][3], points.tweened[j][3]) + shadedColor = shadeColor(avgColor, connectivity) + polygon.lineStyle(1, rgbToHex(shadedColor), 1) + + polygon.moveTo(points.tweened[i][0], points.tweened[i][1]) + polygon.lineTo(points.tweened[j][0], points.tweened[j][1]) + connectionCount = connectionCount + 1 + } + } + + if (connectionCount === 0) { + points.tweened[i][3] = shiftColor(points.tweened[i][3], disconnectedColorShiftAmt) + } + + // draw vectors + polygon.lineStyle(1, rgbToHex(points.tweened[i][3]), 1) + polygon.drawCircle(points.tweened[i][0], points.tweened[i][1], 1) + } +} + +function loop () { + screenWidth = document.documentElement.clientWidth + screenHeight = document.documentElement.clientHeight + renderer.resize(screenWidth, screenHeight) + + polygon.clear() + + drawPolygon(polygon, polygonPoints, counter, tweeningFns) + + counter += 1 + counter = counter % cycleDuration + + if (counter === 0) { + thisLoop = new Date() + fps = Math.round((1000 / (thisLoop - lastLoop)) * cycleDuration) + fpsGraphic.setText(fps.toString()) + lastLoop = thisLoop + } + + polygonPoints = shiftPoints(polygonPoints, pointShiftDistance, counter, tweeningFns) + + // var mousePosition = renderer.plugins.interaction.mouse.global; + // triangle.x = mousePosition.x; + // triangle.y = mousePosition.y; + + // If user scrolled, modify cycleDuration by amount scrolled + if (scrollDelta !== 0) { + cycleDuration = cycleDuration + scrollDelta + if (cycleDuration < 1) { + cycleDuration = 1 + } + scrollDelta = 0 + polygonPoints = redistributeCycles(polygonPoints) + } + + // Tell the `renderer` to `render` the `stage` + renderer.render(stage) + requestAnimationFrame(loop) +} + +function loopStart () { + screenWidth = document.documentElement.clientWidth + screenHeight = document.documentElement.clientHeight + // Create the renderer + renderer = PIXI.autoDetectRenderer(screenWidth, screenHeight, {antialias: true, resolution: 2}) + + // Add the canvas to the HTML document + document.body.appendChild(renderer.view) + + // Create a container object called the `stage` + stage = new PIXI.Container() + + renderer.view.style.position = 'absolute' + renderer.view.style.display = 'block' + renderer.autoResize = true + + counter = 0 + totalScreenPixels = screenWidth + screenHeight + cycleDuration = 60 + connectionDistance = Math.min(Math.round(totalScreenPixels / 16), 75) + connectionLimit = 10 + pointShiftDistance = Math.round(totalScreenPixels / 45) + colorShiftAmt = 80 + disconnectedColorShiftAmt = 10 + polygon = new PIXI.Graphics() + tweeningFns = [ + linearTweening, + easeInSine, + easeOutSine, + easeInOutSine, + easeInQuad, + easeOutQuad, + easeInOutQuad, + easeInCubic, + easeOutCubic, + easeInOutCubic + // easeOutBounce, + // easeInElastic, + // easeOutElastic, + // easeInOutElastic, + // easeInExpo, + // easeOutExpo, + // easeInOutExpo, + // easeInCirc, + // easeOutCirc, + // easeInOutCirc + ] + startPoints = getRandomPoints(Math.round(totalScreenPixels / 6), screenWidth, screenHeight, tweeningFns) + polygonPoints = { + original: startPoints, + target: JSON.parse(JSON.stringify(startPoints)), + tweened: JSON.parse(JSON.stringify(startPoints)) + } + stage.addChild(polygon) + + fpsGraphic = new PIXI.Text('0', {font: '25px monospace', fill: 'yellow'}) + fpsGraphic.x = 0 + fpsGraphic.y = 0 + stage.addChild(fpsGraphic) + + lastLoop = new Date() + + scrollDelta = 0 + + requestAnimationFrame(loop) +} + +window.onload = loopStart + +window.addEventListener('mousewheel', function (e) { + scrollDelta = scrollDelta + ((e.deltaY / 100) * 3) +}) + +// TODO: use jquery PEP to allow user to "pull" at a point elastically +// window.addEventListener('click', function(e) { +// }); + +window.addEventListener('keydown', function (e) { + if (e.keyCode === 37) { // left + pointShiftBiasX = -1 + } else if (e.keyCode === 38) { // up + pointShiftBiasY = -1 + } else if (e.keyCode === 39) { // right + pointShiftBiasX = 1 + } else if (e.keyCode === 40) { // down + pointShiftBiasY = 1 + } +}) diff --git a/js/tutorial.js b/js/tutorial.js new file mode 100644 index 0000000..110303b --- /dev/null +++ b/js/tutorial.js @@ -0,0 +1,129 @@ +// Create the renderer +var renderer = PIXI.autoDetectRenderer(256, 256, {antialias: true}) + +// Add the canvas to the HTML document +document.body.appendChild(renderer.view) + +// Create a container object called the `stage` +var stage = new PIXI.Container() + +renderer.view.style.position = 'absolute' +renderer.view.style.display = 'block' +renderer.autoResize = true +renderer.resize(window.innerWidth, window.innerHeight) + +var counter = 0, + cycleDuration = 60, + tri = { + original: [ + [0, 0], + [-50, 50], + [50, 50] + ], + target: [ + [0, 0], + [-50, 50], + [50, 50] + ] + }, + triangle = new PIXI.Graphics() + +stage.addChild(triangle) + +function randomInt (min, max) { + return Math.floor(Math.random() * (max - min + 1)) + min +} + +function linearTweening (t, b, c, d) { + // t = current time + // b = start value + // c = change in value + // d = duration + return ((c * t) / d) + b +} + +function easeOutBounce (t, b, c, d) { + if ((t /= d) < (1 / 2.75)) { + return c * (7.5625 * t * t) + b + } else if (t < (2 / 2.75)) { + return c * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75) + b + } else if (t < (2.5 / 2.75)) { + return c * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375) + b + } else { + return c * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375) + b + } +} + +function easeInOutExpo (t, b, c, d) { + if (t == 0) return b + if (t == d) return b + c + if ((t /= d / 2) < 1) return c / 2 * Math.pow(2, 10 * (t - 1)) + b + return c / 2 * (-Math.pow(2, -10 * --t) + 2) + b +} + +function drawLine (x1, y1, x2, y2) { + var line = new PIXI.Graphics() + line.lineStyle(1, 0xFFFFFF, 1) + line.moveTo(x1, y1) + line.lineTo(x2, y2) + line.x = x1 + line.y = y1 + stage.addChild(line) +} + +function drawShiftingTriangle (triangle, originalPoints, targetPoints, counter, easingFn) { + var i = 0 + if (counter === 0) { + // Given originalPoints, randomly shifts them by some amount, draws it, and returns new array of points + var newPoints = [] + // Start new cycle. New original is old target. New target is newly generated newPoints. + originalPoints = targetPoints + + for (i = 0; i < originalPoints.length; i++) { + newPoints[i] = [originalPoints[i][0] + randomInt(-10, 10), + originalPoints[i][1] + randomInt(-10, 10)] + } + targetPoints = newPoints + } + triangle.lineStyle(1, 0xFAFAFA, 1) + // triangle.beginFill(0x66FF33); + for (i = 0; i < 4; i++) { + if (i === 0) { + triangle.moveTo(easingFn(counter, originalPoints[0][0], targetPoints[0][0] - originalPoints[0][0], cycleDuration), + easingFn(counter, originalPoints[0][1], targetPoints[0][1] - originalPoints[0][1], cycleDuration)) + } else if (i === 3) { + triangle.lineTo(easingFn(counter, originalPoints[0][0], targetPoints[0][0] - originalPoints[0][0], cycleDuration), + easingFn(counter, originalPoints[0][1], targetPoints[0][1] - originalPoints[0][1], cycleDuration)) + } else { + triangle.lineTo(easingFn(counter, originalPoints[i][0], targetPoints[i][0] - originalPoints[i][0], cycleDuration), + easingFn(counter, originalPoints[i][1], targetPoints[i][1] - originalPoints[i][1], cycleDuration)) + } + } + // triangle.endFill(); + + return { + original: originalPoints, + target: targetPoints + } +} + +function loop () { + requestAnimationFrame(loop) + + triangle.clear() + + // drawLine(0, 0, counter, counter); + tri = drawShiftingTriangle(triangle, tri.original, tri.target, counter, linearTweening) + + counter += 1 + counter = counter % cycleDuration + + var mousePosition = renderer.plugins.interaction.mouse.global + triangle.x = mousePosition.x + triangle.y = mousePosition.y + + // Tell the `renderer` to `render` the `stage` + renderer.render(stage) +} + +loop() diff --git a/notes.md b/notes.md new file mode 100644 index 0000000..2b87525 --- /dev/null +++ b/notes.md @@ -0,0 +1,5 @@ +Space the dots out more. Don't let them get close. + +Rotate the dots around the page in a circular pattern. + + diff --git a/package.json b/package.json new file mode 100644 index 0000000..cd999fc --- /dev/null +++ b/package.json @@ -0,0 +1,24 @@ +{ + "name": "proximity-structures", + "version": "1.0.0", + "description": "", + "main": "index.js", + "scripts": { + "eslint": "eslint", + "test": "echo \"Error: no test specified\" && exit 1" + }, + "repository": { + "type": "git", + "url": "git@git.hallada.net:pixi.git" + }, + "author": "Tyler Hallada", + "license": "ISC", + "devDependencies": { + "eslint": "^3.17.0", + "eslint-config-airbnb-base": "^11.1.1", + "eslint-config-standard": "^7.0.0", + "eslint-plugin-import": "^2.2.0", + "eslint-plugin-promise": "^3.5.0", + "eslint-plugin-standard": "^2.1.1" + } +} diff --git a/tutorial.js b/tutorial.js deleted file mode 100644 index 0d6d040..0000000 --- a/tutorial.js +++ /dev/null @@ -1,129 +0,0 @@ -//Create the renderer -var renderer = PIXI.autoDetectRenderer(256, 256, {antialias: true}); - -//Add the canvas to the HTML document -document.body.appendChild(renderer.view); - -//Create a container object called the `stage` -var stage = new PIXI.Container(); - -renderer.view.style.position = "absolute"; -renderer.view.style.display = "block"; -renderer.autoResize = true; -renderer.resize(window.innerWidth, window.innerHeight); - -var counter = 0, - cycleDuration = 60, - tri = { - original: [ - [0, 0], - [-50, 50], - [50, 50] - ], - target: [ - [0, 0], - [-50, 50], - [50, 50] - ] - }, - triangle = new PIXI.Graphics(); - -stage.addChild(triangle); - -function randomInt(min, max) { - return Math.floor(Math.random() * (max - min + 1)) + min; -} - -function linearTweening(t, b, c, d) { - // t = current time - // b = start value - // c = change in value - // d = duration - return ((c * t) / d) + b; -} - -function easeOutBounce(t, b, c, d) { - if ((t/=d) < (1/2.75)) { - return c*(7.5625*t*t) + b; - } else if (t < (2/2.75)) { - return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b; - } else if (t < (2.5/2.75)) { - return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b; - } else { - return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b; - } -} - -function easeInOutExpo(t, b, c, d) { - if (t==0) return b; - if (t==d) return b+c; - if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b; - return c/2 * (-Math.pow(2, -10 * --t) + 2) + b; -} - -function drawLine(x1, y1, x2, y2) { - var line = new PIXI.Graphics(); - line.lineStyle(1, 0xFFFFFF, 1); - line.moveTo(x1, y1); - line.lineTo(x2, y2); - line.x = x1; - line.y = y1; - stage.addChild(line); -} - -function drawShiftingTriangle(triangle, originalPoints, targetPoints, counter, easingFn) { - var i = 0; - if (counter === 0) { - // Given originalPoints, randomly shifts them by some amount, draws it, and returns new array of points - var newPoints = []; - // Start new cycle. New original is old target. New target is newly generated newPoints. - originalPoints = targetPoints; - - for (i = 0; i < originalPoints.length; i++) { - newPoints[i] = [originalPoints[i][0] + randomInt(-10, 10), - originalPoints[i][1] + randomInt(-10, 10)]; - } - targetPoints = newPoints; - } - triangle.lineStyle(1, 0xFAFAFA, 1); - // triangle.beginFill(0x66FF33); - for (i = 0; i < 4; i++) { - if (i === 0) { - triangle.moveTo(easingFn(counter, originalPoints[0][0], targetPoints[0][0] - originalPoints[0][0], cycleDuration), - easingFn(counter, originalPoints[0][1], targetPoints[0][1] - originalPoints[0][1], cycleDuration)); - } else if (i === 3) { - triangle.lineTo(easingFn(counter, originalPoints[0][0], targetPoints[0][0] - originalPoints[0][0], cycleDuration), - easingFn(counter, originalPoints[0][1], targetPoints[0][1] - originalPoints[0][1], cycleDuration)); - } else { - triangle.lineTo(easingFn(counter, originalPoints[i][0], targetPoints[i][0] - originalPoints[i][0], cycleDuration), - easingFn(counter, originalPoints[i][1], targetPoints[i][1] - originalPoints[i][1], cycleDuration)); - } - } - // triangle.endFill(); - - return { - original: originalPoints, - target: targetPoints - }; -} - -function loop(){ - requestAnimationFrame(loop); - - triangle.clear(); - - // drawLine(0, 0, counter, counter); - tri = drawShiftingTriangle(triangle, tri.original, tri.target, counter, linearTweening); - - counter += 1; - counter = counter % cycleDuration; - - var mousePosition = renderer.plugins.interaction.mouse.global; - triangle.x = mousePosition.x; - triangle.y = mousePosition.y; - - //Tell the `renderer` to `render` the `stage` - renderer.render(stage); -} - -loop();