问题 程序中有时会用到所谓Bounce Setting这种技巧,目的是为了解决一些变量的“来回”设置问题,譬如一个布尔变量,最直观的Bounce Setting方法大概是这个样子: if (boolFlag 总会不自觉的想起这个简洁美观的表达方式,近日在这里也看到了类似的代码,不过其中使用了整形变量1和0,相关的代码大概是这个样子: value = 1 - value; 看到之后突然觉得自己以前一直囿于布尔变量取非这么一种Bounce Setting的形式,而实际上,像上述的这种表达方法也是不错的思路,那么对于任意整数A、B,是否总是存在类似的这种表达式来优雅的完成Bounce Setting呢? 不知你看到这个表达式有什么想法,反正我是觉得挺好笑的,本来以为会是一个稍有繁复的公式,不想却是一个简单的能够一眼望穿的家伙,而自己一开始竟然也毫无察觉,着实好笑 :) 废话打住,依据上述公式,任意整数间的Bounce
Time Limit: 10 Sec Memory Limit: 259 MB Submit: 13753 Solved: 6983 [Submit][Status][Discuss] Description 某天,Lostmonkey发明了一种超级弹力装置,为了在他的绵羊朋友面前显摆,他邀请小绵羊一起玩个游戏。游戏一开始,Lostmonkey在地上沿着一条直线摆上n个装置,每个装置设定初始弹力系数ki,当绵羊达到第i个装置时,它会往后弹ki步,达到第i+ki个装置,若不存在第i+ki个装置,则绵羊被弹
用来实现弹跳小球 Baffle 用来实现底部的挡板 Game 用来控制小球和挡板 // 用于控制小球和挡板 class Game {} // 小球 class Bounce + this.bounce.radius >= this.baffle.x && this.bounce.x <= this.baffle.x + this.baffle.width; const isBetweenY = this.bounce.y + this.bounce.radius >= this.baffle.y; return isBetweenX & + this.bounce.radius >= this.baffle.x && this.bounce.x <= this.baffle.x + this.baffle.width ; const isBetweenY = this.bounce.y + this.bounce.radius >= this.baffle.y;
源代码演示: #include<stdio.h>//头文件 int main()//主函数 { double height,bounce_Height;//定义双精度浮点型变量 height =100;//赋初值 bounce_Height=height/2;//赋初值 int n;//定义整型变量 for(n=2;n<=10;n++) { height=height +2*bounce_Height;//第n次落地时共经过的米数 bounce_Height=bounce_Height/2;//第n次反跳高度 } printf("第10次落地时共经过 %f米\n",height); printf("第10次反弹%f米\n",bounce_Height); return 0; } 编译运行结果如下: 第10次落地时共经过299.609375米
*/ var bounce = 0; if (left1.solid && left1.bounce > bounce) bounce = left1.bounce ; if (left2.solid && left2.bounce > bounce) bounce = left2.bounce; if (right1.solid & & right1.bounce > bounce) bounce = right1.bounce; if (right2.solid && right2.bounce > bounce) = top1.bounce; if (top2.solid && top2.bounce > bounce) bounce = top2.bounce; if (bottom1 .solid && bottom1.bounce > bounce) bounce = bottom1.bounce; if (bottom2.solid && bottom2.bounce
*/ var bounce = 0; if (left1.solid && left1.bounce > bounce) bounce = left1.bounce; right1.bounce > bounce) bounce = right1.bounce; if (right2.solid && right2.bounce > bounce) bounce */ var bounce = 0; if (top1.solid && top1.bounce > bounce) bounce = top1.bounce; if (top2.solid && top2.bounce > bounce) bounce = top2.bounce; if (bottom1.solid && bottom1.bounce > bounce) bounce = bottom1.bounce; if (bottom2.solid && bottom2.bounce > bounce) bounce = bottom2
class func animate(springDuration duration: TimeInterval = 0.5, bounce bounce:弹性系数,取值范围 0 ~ 1,数值越大弹性效果越明显。 initialSpringVelocity:初始速度,数值越大初始速度越快。 delay:动画延迟执行的时间。 UIView动画 func animate() { // 3个不同参数的弹簧动画对比 UIView.animate(springDuration: 1.5, bounce 0) { self.redView.center.y = 300 } UIView.animate(springDuration: 1.5, bounce self.greenView.center.y = 300 } UIView.animate(springDuration: 1.5, bounce
">bounce-t bounce-b bounce-l</span , .ech-bounce-b, .ech-bounce-r, .ech-bounce-l { position: relative; transition: all .3s; :before, .ech-bounce-b:before, .ech-bounce-r:before, .ech-bounce-l:before { transition: all .3s; html bounce css .ech-bounce:hover { animation: bounce 1s ease; } { animation: bounce-in-b 1s; } .ec-bounce-in-t{ animation: bounce-in-t 1s; } @keyframes bounce-in-t
confirm-modal-backdrop" v-show="showModal">
text/css" rel="stylesheet"> <script src="dist/js/micron.min.js">script> HTML结构 例如你需要为一个按钮制作bounce 这是一个按钮 a> 你还可以通过data-micron-duration属性来控制CSS3 可用的easing效果有: linear ease-in ease-out ease-in-out <a href="#" class="button" data-micron="<em>bounce</em> 例如: <a href="#" class="button" data-micron="<em>bounce</em>" data-micron-bind="true" data-micron-id micron="shake" micron="fade" micron="jelly" micron="<em>bounce</em>" micron="tada" micron="groove" micron="swing
*/ var bounce = 0; if (left1.solid && left1.bounce > bounce) bounce = left1.bounce ; if (left2.solid && left2.bounce > bounce) bounce = left2.bounce; if (right1.solid & & right1.bounce > bounce) bounce = right1.bounce; if (right2.solid && right2.bounce > bounce) = top1.bounce; if (top2.solid && top2.bounce > bounce) bounce = top2.bounce; if (bottom1 .solid && bottom1.bounce > bounce) bounce = bottom1.bounce; if (bottom2.solid && bottom2.bounce
Sprite { private var ball:Ball; private var vx:Number; private var vy:Number; private var bounce ; } else if (ball.x - ball.radius < left) { ball.x=left+ball.radius; vx*=bounce; } //垂直方向边界检测 if (ball.y+ball.radius>bottom) { ball.y=bottom-ball.radius; vy*=bounce; } else if (ball.y - ball.radius < top) { ball.y=top+ball.radius; vy*=bounce; } } private ; } else if (ball.x - ball.radius < left) { ball.x=left+ball.radius; vx*=bounce; }
show">切换</button> <transition name="<em>bounce</em>">
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</transition>获取运动块 var timer = null; // 初始化一个计时器 var speed = 0; // 初始化一个速度 btn.onclick = function(){ bounce (move, "marginLeft", 600) } function bounce(ele, prop, targetVal) { var startVal = parseInt(getStyle // 获取控制按钮 var move = document.getElementById("move"); // 获取运动块 btn.onclick = function(){ bounce (move, "marginLeft", 600) } function bounce(ele, prop, targetVal) { var startVal = parseInt(getStyle (move, "marginLeft", 600); btn.judge = true; }; } function bounce(ele, prop, targetVal) {
MESSAGE_CONTROLS]); end end %------------重置------------ %恢复初始值 function resetGame bounce ([newX - PLOT_W, newY - GOAL_TOP]); else %右墙余下部分 bounce([-1 * abs(ballVector ([newX, newY - GOAL_TOP]); else %左墙余下部分 bounce([abs(ballVector(1)), ballVector (2)]); end %顶部 elseif (newY > (PLOT_H - BALL_RADIUS)) bounce([ballVector(1) , -1 * (Y_FACTOR + abs(ballVector(2)))]); %底部 elseif (newY < BALL_RADIUS) bounce([
keyframes #{$animationName} { @content; } } // 由于是 translate 布局,这里改变定位使用 translate @mixin animate-bounce ($name:'bounce', $time: 1.5s, $animateFunc: linear) { animation: $name $time ? 62%; transform: translate(-20%, -50%) rotateZ(26deg); } } } } // 盒子弹跳 .box-bounce { @include animate-bounce('bounce'); } .box-cover-fly{ @include animate-box-cover-fly('box-cover-fly
{ visibility: visible; -webkit-animation: cd-bounce-1 0.6s; -moz-animation: cd-bounce-1 0.6s; animation { visibility: visible; -webkit-animation: cd-bounce-2 0.6s; -moz-animation: cd-bounce-2 0.6s; animation : cd-bounce-2 0.6s; } } @media only screen and (min-width: 1170px) { /* inverse bounce effect on even content blocks */ .cssanimations .cd-timeline-block:nth-child(even) .cd-timeline-content.bounce-in { -webkit-animation: cd-bounce-2-inverse 0.6s; -moz-animation: cd-bounce-2-inverse 0.6s; animation: cd-bounce
ctx.arc(this.pos.x, this.pos.y, this.radius, 0, Math.PI*2); ctx.fill(); } }; bounce 下落落地反弹对象, 即上面雨水反弹的水滴, 你也可后期拓展为反弹的碎石片或者烟尘 定义的十分简单,这里就不做详细说明 var Bounce = function(x, y) { var dist ,则需要在drops数组中清楚该实例对象 if (drop.pos.y >= canvas.height) { //如果需要回弹,则在bouncess数组中加入bounce = bounces[i]; bounce.update(); bounce.draw(); if (bounce.pos.y > 最后说下不足的地方和后期的工作哈: 0、该组件目前对外接口不够多,可调节的范围并不是很多,抽象不是很彻底 1、 setStyle 设置 基本样式 2、 Drop 和Bounce 对象的 update 和
){//结束之后删除div $(".mask").remove(); },2000);}) }) }) //抖动(shake) //闪烁(flash) // 弹跳(bounce flip) // 旋转(rotateIn/rotateOut) // 淡入淡出(fadeIn/fadeOut) // 缩放(zoom) // animated 类似于全局变量,它定义了动画的持续时间;bounce 有些动画效果最后会让元素不可见,比如淡出、向左滑动等等,可能你又需要将 class 删除,比如: //$(function(){ // $('#dowebok').addClass('animated bounce '); // setTimeout(function(){ // $('#dowebok').removeClass('bounce'); // }, 1000); //}); });
边缘行为 /// public const string WRAP = "wrap"; public const string BOUNCE = "bounce"; public Vehicle() { _postion = new Vector2D(0, 0); == WRAP) { wrap(); } else if (_edgeBehavior == BOUNCE ) { bounce(); } x = position.x; y = _position = _position.add(_velocity); 接着检测是否在边缘,是的话调用wrap或者bounce函数。