我有一个名为 bubbels.js 的文件，在这个文件中有几个函数可以为指定的字符串生成气泡效果。
现在我有一个颜色选择器，因此用户可以选择一种颜色，然后生成名称的函数应该以用户指定的颜色生成名称。
经过大量测试后，我发现生成函数需要几个 rgb 代码来表示颜色。所以我制作了一个十六进制到 rgb 转换器，这样我就有了用户选择的 rgb 代码。我已将 rgb 放入一个 var 中，并想在生成函数中将其用作颜色。但是 rgb 是一个字符串，所以我按照最初的方式将它解析为一个整数数组。
现在问题来了: 生成名称的函数有效，但由于某种原因不采用用户指定的颜色，我不明白为什么它不采用用户颜色。
这就是我构建 rgb 数组的方式:
var colorPicker_Veld1 = "#" + document.getElementById("kleur1").value;
var colorPicker_Veld2 = "#" + document.getElementById("kleur2").value;
var colorPicker_Veld3 = "#" + document.getElementById("kleur3").value;
var colorPicker_Veld4 = "#" + document.getElementById("kleur4").value;
var colorPicker_Veld5 = "#" + document.getElementById("kleur5").value;
var red_r = hexToRgb(colorPicker_Veld1).r;
var red_g = hexToRgb(colorPicker_Veld1).g;
var red_b = hexToRgb(colorPicker_Veld1).b;
var parsedRed_r = parseInt(red_r);
var parsedRed_g = parseInt(red_g);
var parsedRed_b = parseInt(red_b);
var red = [parsedRed_r, parsedRed_g, parsedRed_b];
var orange_r = hexToRgb(colorPicker_Veld2).r;
var orange_g = hexToRgb(colorPicker_Veld2).g;
var orange_b = hexToRgb(colorPicker_Veld2).b;
var parsedOrange_r = parseInt(orange_r);
var parsedOrange_g = parseInt(orange_g);
var parsedOrange_b = parseInt(orange_b);
var orange = [parsedOrange_r, orange_g, orange_b];
我对每种颜色都这样做，然后我制作了一个看起来像这样的 var lettercolor:
var letterColors = [red, orange, green, blue, purple];
我给函数 drawName 的字母颜色和名称(来自文本框)，如下所示:
drawName(myName, letterColors);
drawName() 函数可以在 bubble.js 文件中找到，如下所示:
function Vector(x, y, z) {
this.x = x;
this.y = y;
this.z = z;
this.set = function (x, y) {
this.x = x;
this.y = y;
};
}
function PointCollection() {
this.mousePos = new Vector(0, 0);
this.pointCollectionX = 0;
this.pointCollectionY = 0;
this.points = [];
this.update = function () {
for (var i = 0; i < this.points.length; i++) {
var point = this.points[i];
var dx = this.mousePos.x - point.curPos.x;
var dy = this.mousePos.y - point.curPos.y;
var dd = (dx * dx) + (dy * dy);
var d = Math.sqrt(dd);
point.targetPos.x = d < 150 ? point.curPos.x - dx : point.originalPos.x;
point.targetPos.y = d < 150 ? point.curPos.y - dy : point.originalPos.y;
point.update();
}
};
this.shake = function () {
var randomNum = Math.floor(Math.random() * 5) - 2;
for (var i = 0; i < this.points.length; i++) {
var point = this.points[i];
var dx = this.mousePos.x - point.curPos.x;
var dy = this.mousePos.y - point.curPos.y;
var dd = (dx * dx) + (dy * dy);
var d = Math.sqrt(dd);
if (d < 50) {
this.pointCollectionX = Math.floor(Math.random() * 5) - 2;
this.pointCollectionY = Math.floor(Math.random() * 5) - 2;
}
point.draw(bubbleShape, this.pointCollectionX, this.pointCollectionY);
}
};
this.draw = function (bubbleShape, reset) {
for (var i = 0; i < this.points.length; i++) {
var point = this.points[i];
if (point === null)
continue;
if (window.reset) {
this.pointCollectionX = 0;
this.pointCollectionY = 0;
this.mousePos = new Vector(0, 0);
}
point.draw(bubbleShape, this.pointCollectionX, this.pointCollectionY, reset);
}
};
this.reset = function (bubbleShape) {};
}
function Point(x, y, z, size, color) {
this.curPos = new Vector(x, y, z);
this.color = color;
this.friction = document.Friction;
this.rotationForce = document.rotationForce;
this.springStrength = 0.1;
this.originalPos = new Vector(x, y, z);
this.radius = size;
this.size = size;
this.targetPos = new Vector(x, y, z);
this.velocity = new Vector(0.0, 0.0, 0.0);
this.update = function () {
var dx = this.targetPos.x - this.curPos.x;
var dy = this.targetPos.y - this.curPos.y;
// Orthogonal vector is [-dy,dx]
var ax = dx * this.springStrength - this.rotationForce * dy;
var ay = dy * this.springStrength + this.rotationForce * dx;
this.velocity.x += ax;
this.velocity.x *= this.friction;
this.curPos.x += this.velocity.x;
this.velocity.y += ay;
this.velocity.y *= this.friction;
this.curPos.y += this.velocity.y;
var dox = this.originalPos.x - this.curPos.x;
var doy = this.originalPos.y - this.curPos.y;
var dd = (dox * dox) + (doy * doy);
var d = Math.sqrt(dd);
this.targetPos.z = d / 100 + 1;
var dz = this.targetPos.z - this.curPos.z;
var az = dz * this.springStrength;
this.velocity.z += az;
this.velocity.z *= this.friction;
this.curPos.z += this.velocity.z;
this.radius = this.size * this.curPos.z;
if (this.radius < 1) this.radius = 1;
};
/*this.draw = function (bubbleShape, dx, dy) {
ctx.fillStyle = this.color;
if (bubbleShape == "square") {
ctx.beginPath();
ctx.fillRect(this.curPos.x + dx, this.curPos.y + dy, this.radius * 1.5, this.radius * 1.5);
} else {
ctx.beginPath();
ctx.arc(this.curPos.x + dx, this.curPos.y + dy, this.radius, 0, Math.PI * 2, true);
ctx.fill();
}
};*/
this.draw = function (bubbleShape, dx, dy) {
ctx.fillStyle = this.color;
if (bubbleShape == "square") {
ctx.beginPath();
ctx.fillRect(this.curPos.x + dx, this.curPos.y + dy, this.radius * 1.5, this.radius * 1.5);
} else if (bubbleShape == "triangle") {
// driehoek
// start our path
ctx.beginPath();
// move to vertex A
ctx.moveTo(this.curPos.x + dx, this.curPos.y + dy);
// move to vertex B
ctx.lineTo(this.curPos.x + dx, this.curPos.y + dy + this.radius * 1.5);
// move to vertex C
ctx.lineTo(this.curPos.x + dx + this.radius * 1.5, this.curPos.y + dy + this.radius * 1.5);
// fill our shape
ctx.fill();
}
else if (bubbleShape == "heart") {
ctx.beginPath();
ctx.moveTo(this.curPos.x + dx + 0.8655 * this.radius, this.curPos.y + dy + 0.462 * this.radius);
ctx.bezierCurveTo(this.curPos.x + dx + 0.8655 * this.radius, this.curPos.y + dy + 0.4275 * this.radius, this.curPos.x + dx + 0.807 * this.radius, this.curPos.y + dy + 0.288 * this.radius, this.curPos.x + dx + 0.5775 * this.radius, this.curPos.y + dy + 0.288 * this.radius);
ctx.bezierCurveTo(this.curPos.x + dx + 0.231 * this.radius, this.curPos.y + dy + 0.288 * this.radius, this.curPos.x + dx + 0.231 * this.radius, this.curPos.y + dy + 0.721 * this.radius, this.curPos.x + dx + 0.231 * this.radius, this.curPos.y + dy + 0.721 * this.radius);
ctx.bezierCurveTo(this.curPos.x + dx + 0.231 * this.radius, this.curPos.y + dy + 0.923 * this.radius, this.curPos.x + dx + 0.462 * this.radius, this.curPos.y + dy + 1.177 * this.radius, this.curPos.x + dx + 0.8655 * this.radius, this.curPos.y + dy + 1.385 * this.radius);
ctx.bezierCurveTo(this.curPos.x + dx + 1.269 * this.radius, this.curPos.y + dy + 1.177 * this.radius, this.curPos.x + dx + 1.5 * this.radius, this.curPos.y + dy + 0.923 * this.radius, this.curPos.x + dx + 1.5 * this.radius, this.curPos.y + dy + 0.721 * this.radius);
ctx.bezierCurveTo(this.curPos.x + dx + 1.5 * this.radius, this.curPos.y + dy + 0.721 * this.radius, this.curPos.x + dx + 1.5 * this.radius, this.curPos.y + dy + 0.288 * this.radius, this.curPos.x + dx + 1.154 * this.radius, this.curPos.y + dy + 0.288 * this.radius);
ctx.bezierCurveTo(this.curPos.x + dx + 0.9808 * this.radius, this.curPos.y + dy + 0.288 * this.radius, this.curPos.x + dx + 0.8655 * this.radius, this.curPos.y + dy + 0.4275 * this.radius, this.curPos.x + dx + 0.8655 * this.radius, this.curPos.y + dy + 0.462 * this.radius);
ctx.fill();
}
else if (bubbleShape=="target") {
ctx.beginPath();
for (var i=5;i>0;i--) {
ctx.arc(this.curPos.x + dx, this.curPos.y + dy, i*this.radius/5, 0, Math.PI * 2, i%2===0);
}
ctx.fill();
} else if (bubbleShape=="smiley") {
ctx.beginPath();
ctx.arc(this.curPos.x + dx, this.curPos.y + dy, this.radius, 0, Math.PI * 2, false);
ctx.arc(this.curPos.x + dx, this.curPos.y + dy, this.radius/5*4, Math.PI, 0, true);
ctx.arc(this.curPos.x + dx, this.curPos.y + dy, this.radius/5*3, Math.PI, 0, true);
ctx.arc(this.curPos.x+dx-(this.radius/3),this.curPos.y+dy-(this.radius/2),this.radius/6,0,Math.PI*2,true);
ctx.moveTo(this.curPos.x+dx+(this.radius/3),this.curPos.y+dy-(this.radius/2));
ctx.arc(this.curPos.x+dx+(this.radius/3),this.curPos.y+dy-(this.radius/2),this.radius/6,0,Math.PI*2,true);
ctx.fill();
}else if (bubbleShape=="4star") {
ctx.beginPath();
for (var ixVertex=0;ixVertex<=8;++ixVertex) {
var angle = ixVertex * Math.PI / 4 - Math.PI / 4;
var radius = ixVertex % 2 === 0 ? this.radius: this.radius/3;
ctx.lineTo(this.curPos.x + dx+ radius * Math.cos(angle), this.curPos.y + dy + radius * Math.sin(angle));
}
ctx.fill();
}
else if (bubbleShape=="5star") {
ctx.beginPath();
for (var ixVertex=0;ixVertex<=10;ixVertex++) {
var angle = ixVertex * Math.PI /5 - Math.PI/2;
var radius = ixVertex % 2 === 0 ? this.radius: this.radius/3;
ctx.lineTo(this.curPos.x + dx+ radius * Math.cos(angle), this.curPos.y + dy + radius * Math.sin(angle));
}
ctx.fill();
}
else if (bubbleShape=="pentagon") {
ctx.beginPath();
for (var ixVertex=0;ixVertex<=8;++ixVertex) {
var angle = ixVertex * 2*Math.PI / 8- Math.PI / 2;
//var radius = ixVertex % 2 === 0 ? this.radius: this.radius/3;
ctx.lineTo(this.curPos.x + dx+ this.radius * Math.cos(angle), this.curPos.y + dy + this.radius * Math.sin(angle));
}
ctx.fill();
}
else {
ctx.beginPath();
ctx.arc(this.curPos.x + dx, this.curPos.y + dy, this.radius, 0, Math.PI * 2, true);
ctx.fill();
}
};
}
function makeColor(hslList, fade) {
var hue = hslList[0] /*- 17.0 * fade / 1000.0*/ ;
var sat = hslList[1] /*+ 81.0 * fade / 1000.0*/ ;
var lgt = hslList[2] /*+ 58.0 * fade / 1000.0*/ ;
return "hsl(" + hue + "," + sat + "%," + lgt + "%)";
}
function phraseToHex(phrase) {
var hexphrase = "";
for (var i = 0; i < phrase.length; i++) {
hexphrase += phrase.charCodeAt(i).toString(16);
}
return hexphrase;
}
function initEventListeners() {
$(window).bind('resize', updateCanvasDimensions).bind('mousemove', onMove);
canvas.ontouchmove = function (e) {
e.preventDefault();
onTouchMove(e);
};
canvas.ontouchstart = function (e) {
e.preventDefault();
};
}
function updateCanvasDimensions() {
canvas.attr({
height: 500,
width: 1000
});
canvasWidth = canvas.width();
canvasHeight = canvas.height();
draw();
}
function onMove(e) {
if (pointCollection) {
pointCollection.mousePos.set(e.pageX - canvas.offset().left, e.pageY - canvas.offset().top);
}
}
function onTouchMove(e) {
if (pointCollection) {
pointCollection.mousePos.set(e.targetTouches[0].pageX - canvas.offset().left, e.targetTouches[0].pageY - canvas.offset().top);
}
}
function bounceName() {
shake();
setTimeout(bounceName, 30);
}
function bounceBubbles() {
draw();
update();
setTimeout(bounceBubbles, 30);
}
function draw(reset) {
var tmpCanvas = canvas.get(0);
if (tmpCanvas.getContext === null) {
return;
}
ctx = tmpCanvas.getContext('2d');
ctx.clearRect(0, 0, canvasWidth, canvasHeight);
bubbleShape = typeof bubbleShape !== 'undefined' ? bubbleShape : "circle";
if (pointCollection) {
pointCollection.draw(bubbleShape, reset);
}
}
function shake() {
var tmpCanvas = canvas.get(0);
if (tmpCanvas.getContext === null) {
return;
}
ctx = tmpCanvas.getContext('2d');
ctx.clearRect(0, 0, canvasWidth, canvasHeight);
bubbleShape = typeof bubbleShape !== 'undefined' ? bubbleShape : "circle";
if (pointCollection) {
pointCollection.shake(bubbleShape);
}
}
function update() {
if (pointCollection)
pointCollection.update();
}
function drawName(name, letterColors) {
updateCanvasDimensions();
var g = [];
var offset = 0;
function addLetter(cc_hex, ix, letterCols) {
if (typeof letterCols !== 'undefined') {
if (Object.prototype.toString.call(letterCols) === '[object Array]' && Object.prototype.toString.call(letterCols[0]) === '[object Array]') {
letterColors = letterCols;
}
if (Object.prototype.toString.call(letterCols) === '[object Array]' && typeof letterCols[0] === "number") {
letterColors = [letterCols];
}
} else {
// if undefined set black
letterColors = [[0, 0, 27]];
}
if (document.alphabet.hasOwnProperty(cc_hex)) {
var chr_data = document.alphabet[cc_hex].P;
var bc = letterColors[ix % letterColors.length];
for (var i = 0; i < chr_data.length; ++i) {
point = chr_data[i];
g.push(new Point(point[0] + offset,
point[1],
0.0,
point[2],
makeColor(bc, point[3])));
}
offset += document.alphabet[cc_hex].W;
}
}
var hexphrase = phraseToHex(name);
var col_ix = -1;
for (var i = 0; i < hexphrase.length; i += 2) {
var cc_hex = "A" + hexphrase.charAt(i) + hexphrase.charAt(i + 1);
if (cc_hex != "A20") {
col_ix++;
}
addLetter(cc_hex, col_ix, letterColors);
}
for (var j = 0; j < g.length; j++) {
g[j].curPos.x = (canvasWidth / 2 - offset / 2) + g[j].curPos.x;
g[j].curPos.y = (canvasHeight / 2 - 105) + g[j].curPos.y;
g[j].originalPos.x = (canvasWidth / 2 - offset / 2) + g[j].originalPos.x;
g[j].originalPos.y = (canvasHeight / 2 - 105) + g[j].originalPos.y;
}
pointCollection = new PointCollection();
pointCollection.points = g;
initEventListeners();
}
window.reset = false;
$(window).mouseleave(function () {
window.reset = true;
});
$(window).mouseenter(function () {
window.reset = false;
});
var canvas = $("#myCanvas");
var canvasHeight;
var canvasWidth;
var ctx;
var pointCollection;
document.rotationForce = 0.0;
document.Friction = 0.85;
var white = [0, 0, 100];
var black = [0, 0, 27];
var red = [0, 100, 63];//var orange = [parsedOrange_r, orange_g, orange_b];
var orange = [40, 100, 60];//var orange = [parsedOrange_r, orange_g, orange_b];
var green = [75, 100, 40];
var blue = [196, 77, 55];
var purple = [280, 50, 60];
setTimeout(updateCanvasDimensions, 30);
谁能给我解释一下为什么 drawName 函数不想使用用户指定的颜色。
可以在以下位置找到“工作”示例: http://amandovledder.eu/bubbel
最佳答案
错误是颜色字符串格式之一。 bubbels.js 中的函数 makeColor 返回 hsl(hue, sat%, lum%) 形式的色调饱和度亮度字符串，用作颜色值。然而，调用代码为其提供了一个 RGB 值数组。可以通过修改 makeColor 来返回代表调用它的数组的 rgb 字符串来使代码(如在大棒中)工作:
function makeColor(rgb)
{
return "rgb(" + rgb[0] + "," + rgb[1] + "," + rgb[2] + ")";
}
关于javascript - 采用对象数组的函数拒绝自制数组，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33322104/