所需的输出例如:当红色蒙版矩形移动到其中一个“孔”后面时,孔需要更改填充(或其他一些attr)。
当moving_rect进入/离开孔元素区域时,是否可以添加某种触发事件?
在行动中: https://jsfiddle.net/qwertasyx/n9v7L95j/
此处也是片段:
var draw = SVG('myDrawing').size('100%',200);
var rect_group = draw.group()
//we dont want to see this
var background = rect_group.rect(200,150).center(250,100).fill('#000')
// we want too see through those 'holes'
var hole1 = rect_group.rect(40,40).center(290,70 ).fill('#fff')
var hole2 = rect_group.rect(40,40).center(290,130).fill('#fff')
var hole3 = rect_group.rect(40,40).center(220,70 ).fill('#fff')
var hole4 = rect_group.rect(40,40).center(220,130).fill('#fff')
// object that we see through the holes
var moving_rect = draw.rect(40,40).fill('red').center(250,100)
//mask obj
var mask = draw.mask()
$('#mask').on('click',function(e){
mask.add(rect_group)
moving_rect.maskWith(mask)
})
$('#animate').on('click',function(e){ moving_rect.animate(250).move(160,40).animate(250).move(250,40).animate(250).move(300,80).animate(250).move(250,160).animate(250).center(250,100)
})
svg{
border-style: solid;
border-width: 1px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/svg.js/2.6.5/svg.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!--
Bootstrap docs: https://getbootstrap.com/docs
-->
<div class="container-fluid">
<div class="row">
<div class="col-12">
<h5>Example svg -> click button for animation </h5><button id="mask" class="btn btn-primary">mask rect</button> <button id="animate" class="btn btn-primary">animate</button>
</div>
</div>
</div>
<div class="container-fluid">
<div class="row">
<div class="col-12">
<div id="myDrawing"></div>
</div>
</div>
</div>
<hr>
答案 0 :(得分:0)
所以我制作了一个解决方案,在每个动画步骤中检查其中一个矩形(孔)是否与移动的矩形相交。 如果检测到交叉点,则会更改“孔”的填充颜色。
// animate()...
.duringAll(function () {
// get box of the rectangle
var bbox = this.bbox()
// intersection function. You should define it somewhere outside
// instead of redefining every time
var intersect = function(boxA, boxB) {
return (boxA.x < boxB.x2 && boxA.x2 > boxB.x &&
boxA.y < boxB.y2 && boxA.y2 > boxB.y)
}
// go trough the boxes of every hole defined before
boxes.forEach(function (el, index) {
if(intersect(bbox, el)) {
// change color of fill on intersection
rects[index].fill('#555')
} else {
rects[index].fill('#fff')
}
})
})
工作小提琴: https://jsfiddle.net/Fuzzy/n9v7L95j/5/
取而代之的是举办一场活动。你可以去:
this.fire('intersection', {index: index})
// then bind with
moving_rect.on('intersection', function (ev) {
var index = ev.detail.index
// do somthing
rects[index].fill('#333')
})