Javascript Fabric.js-将对象创建附加到鼠标单击
创建新结构对象时,可以指定其在画布上显示的位置。有没有办法将生成的对象附加到鼠标上,然后单击或触摸该对象 例如,生成画布上显示的圆的方法Javascript Fabric.js-将对象创建附加到鼠标单击,javascript,fabricjs,Javascript,Fabricjs,创建新结构对象时,可以指定其在画布上显示的位置。有没有办法将生成的对象附加到鼠标上,然后单击或触摸该对象 例如,生成画布上显示的圆的方法 var circle = new fabric.Circle({ radius: 20, fill: 'green', left: 100, top: 100 }); 更新对象的位置以匹配鼠标位置和鼠标上的位置非常容易:向上克隆该对象并将其放置在画布上 var circle = new fabric.Circle({ radius: 20, fill
var circle = new fabric.Circle({
radius: 20, fill: 'green', left: 100, top: 100
});
更新对象的位置以匹配鼠标位置和鼠标上的位置非常容易:向上克隆该对象并将其放置在画布上
var circle = new fabric.Circle({
radius: 20, fill: 'green', left: 100, top: 100
});
var canvas=newfabric.canvas'c';
var mousecursor=new fabric.Circle{
左:0,,
排名:0,
半径:5,
填充:“9f9”,
originX:'对',
原文:'底部',
}
canvas.addmousecursor;
canvas.on'mouse:move',functionobj{
mousecursor.top=obj.e.y-mousecursor.radius;
mousecursor.left=对象e.x-mousecursor.radius;
canvas.renderAll
}
canvas.on'mouse:out',functionobj{
//将圆圈移出屏幕
mousecursor.top=-100;
mousecursor.left=-100;
canvas.renderAll
}
canvas.on'mouse:up',functionobj{
canvas.addmousecursor.clone
canvas.renderAll
}
帆布{
边框:1px实心ccc;
}
更新对象的位置以匹配鼠标位置和鼠标上的位置非常容易:向上克隆该对象并将其放置在画布上
var circle = new fabric.Circle({
radius: 20, fill: 'green', left: 100, top: 100
});
var canvas=newfabric.canvas'c';
var mousecursor=new fabric.Circle{
左:0,,
排名:0,
半径:5,
填充:“9f9”,
originX:'对',
原文:'底部',
}
canvas.addmousecursor;
canvas.on'mouse:move',functionobj{
mousecursor.top=obj.e.y-mousecursor.radius;
mousecursor.left=对象e.x-mousecursor.radius;
canvas.renderAll
}
canvas.on'mouse:out',functionobj{
//将圆圈移出屏幕
mousecursor.top=-100;
mousecursor.left=-100;
canvas.renderAll
}
canvas.on'mouse:up',functionobj{
canvas.addmousecursor.clone
canvas.renderAll
}
帆布{
边框:1px实心ccc;
}
var canvas=newfabric.canvas'c';
var mousecursor=new fabric.Circle{
左:0,,
排名:0,
半径:50,
填充:“9f9”,
originX:'对',
原文:'底部',
}
canvas.addmousecursor;
canvas.on'mouse:move',functionobj{
mousecursor.top=obj.e.y;
mousecursor.left=obj.e.x;
canvas.renderAll
}
帆布{
边框:1px实心ccc;
}
var canvas=newfabric.canvas'c';
var mousecursor=new fabric.Circle{
左:0,,
排名:0,
半径:50,
填充:“9f9”,
originX:'对',
原文:'底部',
}
canvas.addmousecursor;
canvas.on'mouse:move',functionobj{
mousecursor.top=obj.e.y;
mousecursor.left=obj.e.x;
canvas.renderAll
}
帆布{
边框:1px实心ccc;
}
@kangax-有想法吗?@kangax-有想法吗?太好了!对不起,我之前忘记接受这个答案了。谢谢!你有没有考虑过画布平移和缩放的例子?太好了!对不起,我之前忘记接受这个答案了。谢谢!你有没有考虑过画布平移和缩放的例子?