发布时间 : 星期六 文章HTML5+jQuery制作温馨浪漫爱心表白动画特效更新完毕开始阅读
this.angle = angle; this.bloom = bloom; this.growFactor = growFactor; this.r = 1; this.isfinished = false; //this.tanAngleA = Garden.random(-Garden.degrad(Garden.options.tanAngle), Garden.degrad(Garden.options.tanAngle)); //this.tanAngleB = Garden.random(-Garden.degrad(Garden.options.tanAngle), Garden.degrad(Garden.options.tanAngle)); } Petal.prototype = { draw: function () { var ctx = this.bloom.garden.ctx; var v1, v2, v3, v4; v1 = new Vector(0, this.r).rotate(Garden.degrad(this.startAngle)); v2 = v1.clone().rotate(Garden.degrad(this.angle)); v3 = v1.clone().mult(this.stretchA); //.rotate(this.tanAngleA); v4 = v2.clone().mult(this.stretchB); //.rotate(this.tanAngleB); ctx.strokeStyle = this.bloom.c; ctx.beginPath(); ctx.moveTo(v1.x, v1.y); ctx.bezierCurveTo(v3.x, v3.y, v4.x, v4.y, v2.x, v2.y); ctx.stroke(); }, render: function () { if (this.r <= this.bloom.r) { this.r += this.growFactor; // / 10; this.draw(); } else { this.isfinished = true; } } } function Bloom(p, r, c, pc, garden) { this.p = p; this.r = r; this.c = c; this.pc = pc; this.petals = []; this.garden = garden; this.init(); this.garden.addBloom(this); }
Bloom.prototype = { draw: function () { var p, isfinished = true; this.garden.ctx.save(); this.garden.ctx.translate(this.p.x, this.p.y); for (var i = 0; i < this.petals.length; i++) { p = this.petals[i]; p.render(); isfinished *= p.isfinished; } this.garden.ctx.restore(); if (isfinished == true) { this.garden.removeBloom(this); } }, init: function () { var angle = 360 / this.pc; var startAngle = Garden.randomInt(0, 90); for (var i = 0; i < this.pc; i++) { this.petals.push(new
Petal(Garden.random(Garden.options.petalStretch.min, Garden.options.petalStretch.max), Garden.random(Garden.options.petalStretch.min, Garden.options.petalStretch.max), startAngle + i * angle, angle, Garden.random(Garden.options.growFactor.min, Garden.options.growFactor.max), this)); } } } function Garden(ctx, element) { this.blooms = []; this.element = element; this.ctx = ctx; } Garden.prototype = { render: function () { for (var i = 0; i < this.blooms.length; i++) { this.blooms[i].draw(); } }, addBloom: function (b) { this.blooms.push(b); }, removeBloom: function (b) { var bloom;
for (var i = 0; i < this.blooms.length; i++) { bloom = this.blooms[i]; if (bloom === b) { this.blooms.splice(i, 1); return this; } } }, createRandomBloom: function (x, y) { this.createBloom(x, y, Garden.randomInt(Garden.options.bloomRadius.min, Garden.options.bloomRadius.max), Garden.randomrgba(Garden.options.color.rmin, Garden.options.color.rmax, Garden.options.color.gmin, Garden.options.color.gmax, Garden.options.color.bmin, Garden.options.color.bmax, Garden.options.color.opacity), Garden.randomInt(Garden.options.petalCount.min, Garden.options.petalCount.max)); }, createBloom: function (x, y, r, c, pc) { new Bloom(new Vector(x, y), r, c, pc, this); }, clear: function () { this.blooms = []; this.ctx.clearRect(0, 0, this.element.width, this.element.height); } } Garden.options = { petalCount: { min: 8, max: 15 }, petalStretch: { min: 0.1, max: 3 }, growFactor: { min: 0.1, max: 1 }, bloomRadius: { min: 8, max: 10 }, density: 10, growSpeed: 1000 / 60, color: {
{
rmin: 128, rmax: 255, gmin: 0, gmax: 128, bmin: 0, bmax: 128, opacity: 0.1 },
tanAngle: 60 };
Garden.random = function (min, max) {
return Math.random() * (max - min) + min; };
Garden.randomInt = function (min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min; };
Garden.circle = 2 * Math.PI;
Garden.degrad = function (angle) { return Garden.circle / 360 * angle; };
Garden.raddeg = function (angle) { return angle / Garden.circle * 360; };
Garden.rgba = function (r, g, b, a) {
return 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')'; };
Garden.randomrgba = function (rmin, rmax, gmin, gmax, bmin, bmax, a) { var r = Math.round(Garden.random(rmin, rmax)); var g = Math.round(Garden.random(gmin, gmax)); var b = Math.round(Garden.random(bmin, bmax)); var limit = 5; if (Math.abs(r - g) <= limit && Math.abs(g - b) <= limit && Math.abs(b - r) <= limit) };
return Garden.rgba(rmin, rmax, gmin, gmax, bmin, bmax, a); } else { return Garden.rgba(r, g, b, a); }