thallada/proximity-structures
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Dynamically add/remove points as numPoints changes

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This commit is contained in:
Tyler Hallada 2017-08-13 15:11:44 -04:00
parent dd47eef459
commit e8d7f8b62c
2 changed files with 33 additions and 7 deletions
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36
js/proximity.js
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@ -461,11 +461,7 @@ function createSprite () {
); );
} }
/* POINT OPERATION FUNCTIONS */ function clearSprites () {
function getRandomPoints (numPoints, maxX, maxY, maxZ, tweeningFns) {
var i, x, y, z, color, cycleStart, easingFn, sprite;
var points = [];
if (sprites.length > 0) { if (sprites.length > 0) {
// need to clear out old sprites // need to clear out old sprites
for (i = 0; i < sprites.length; i++) { for (i = 0; i < sprites.length; i++) {
@ -473,6 +469,13 @@ function getRandomPoints (numPoints, maxX, maxY, maxZ, tweeningFns) {
} }
sprites = []; sprites = [];
} }
}
/* POINT OPERATION FUNCTIONS */
function getRandomPoints (numPoints, maxX, maxY, maxZ, tweeningFns) {
var i, x, y, z, color, cycleStart, easingFn, sprite;
var points = [];
for (i = 0; i < numPoints; i++) { for (i = 0; i < numPoints; i++) {
x = randomInt(0, maxX - 1); x = randomInt(0, maxX - 1);
y = randomInt(0, maxY - 1); y = randomInt(0, maxY - 1);
@ -491,6 +494,26 @@ function getRandomPoints (numPoints, maxX, maxY, maxZ, tweeningFns) {
return points; return points;
} }
function addOrRemovePoints (numPoints, points) {
/* Given new value numPoints, remove or add new random points to match new count. */
var deletedSprites, newPoints;
if (points.target.length > numPoints) {
points.original.splice(numPoints - 1);
points.target.splice(numPoints - 1);
points.tweened.splice(numPoints - 1);
deletedSprites = sprites.splice(numPoints - 1);
for (var i = 0; i < deletedSprites.length; i++) {
stage.removeChild(deletedSprites[i]);
}
} else if (points.target.length < numPoints) {
newPoints = getRandomPoints(numPoints - points.target.length, screenWidth, screenHeight, zRange, tweeningFns);
points.original = points.original.concat(newPoints);
points.target = points.target.concat(JSON.parse(JSON.stringify(newPoints)));
points.tweened = points.tweened.concat(JSON.parse(JSON.stringify(newPoints)));
}
return points;
}
function shiftPoints (points, maxShiftAmt, counter, tweeningFns) { function shiftPoints (points, maxShiftAmt, counter, tweeningFns) {
var i, shiftX, shiftY, candidateX, candidateY; var i, shiftX, shiftY, candidateX, candidateY;
for (i = 0; i < points.original.length; i++) { for (i = 0; i < points.original.length; i++) {
@ -687,6 +710,7 @@ function loop () {
if (reset === true) { if (reset === true) {
var newPoints; var newPoints;
clearSprites();
newPoints = getRandomPoints(numPoints, screenWidth, screenHeight, zRange, tweeningFns); newPoints = getRandomPoints(numPoints, screenWidth, screenHeight, zRange, tweeningFns);
polygonPoints = { polygonPoints = {
original: newPoints, original: newPoints,
@ -1028,12 +1052,14 @@ window.onload = function () {
pointsNumRange.value = numPoints; pointsNumRange.value = numPoints;
pointsNumRange.addEventListener('input', function (e) { pointsNumRange.addEventListener('input', function (e) {
numPoints = parseInt(this.value, 10); numPoints = parseInt(this.value, 10);
polygonPoints = addOrRemovePoints(numPoints, polygonPoints);
}); });
var pointsNumInput = document.getElementsByName('pointsNumInput')[0]; var pointsNumInput = document.getElementsByName('pointsNumInput')[0];
pointsNumInput.value = numPoints; pointsNumInput.value = numPoints;
pointsNumInput.addEventListener('input', function (e) { pointsNumInput.addEventListener('input', function (e) {
numPoints = parseInt(this.value, 10); numPoints = parseInt(this.value, 10);
polygonPoints = addOrRemovePoints(numPoints, polygonPoints);
}); });
var maxTravelRange = document.getElementsByName('maxTravelRange')[0]; var maxTravelRange = document.getElementsByName('maxTravelRange')[0];

4
notes.md
View File

@ -13,8 +13,8 @@ larger the polygon) the more dark the color is shaded.
Add a bunch of dials and switches to the UI to tweak the different configurable Add a bunch of dials and switches to the UI to tweak the different configurable
values. values.
* Mostly implemented, need to add dials for click and hover vars * Mostly implemented, need to add dials for click and hover vars
* Make point count slider add/remove points dynamically without having to * ~~Make point count slider add/remove points dynamically without having to
reset. reset.~~
* Make increasing cycleDuration auto randomize point cycles? * Make increasing cycleDuration auto randomize point cycles?
* Save config to local storage and add a reset config to defaults button * Save config to local storage and add a reset config to defaults button
* Allow sharing configs * Allow sharing configs