使路线和图像在拉斐尔js可以拖拉 [英] Making paths and images draggable in Raphael js

问题描述

是否可以使用Raphael js在页面之外拖放除了圆圈和矩形之外的对象？

Is it possible to be able to drag and drop objects other than just circles and rectangles around a page using Raphael js?

我想添加路径和图像然后你可以移动，但它的证明是棘手的。
我希望与拉斐尔一起工作，因为它支持触摸界面。

I want to add in paths and images which you can then move around but its proving tricky. I would like to work this out with Raphael because of its support with touch interfaces.

这里是代码

<script>
    window.onload = function () {
        var R = Raphael(0, 0, "100%", "100%"),
            r = R.circle(100, 100, 50).attr({fill: "hsb(0, 1, 1)", stroke: "none", opacity: .5}),
            g = R.circle(210, 100, 50).attr({fill: "hsb(.3, 1, 1)", stroke: "none", opacity: .5}),
            b = R.circle(320, 100, 50).attr({fill: "hsb(.6, 1, 1)", stroke: "#fff", "fill-opacity": 0, "stroke-width": 0.8, opacity: .5}),
            p = R.path("M 250 250 l 0 -50 l -50 0 l 0 -50 l -50 0 l 0 50 l -50 0 l 0 50 z") .attr({fill: "hsb(.8, 1, 1)", stroke: "none", opacity: .5});
        var start = function () {
            this.ox = this.attr("cx");
            this.oy = this.attr("cy");
            this.animate({r: 70, opacity: .25}, 500, ">");
        },
        move = function (dx, dy) {
            this.attr({cx: this.ox + dx, cy: this.oy + dy});
        },
        up = function () {
            this.animate({r: 50, opacity: .5}, 500, ">");
        };
        R.set(r, g, b, p).drag(move, start, up);
    };
</script>

推荐答案

这里（我发现）的关键是转换x和y三角形转换为路径对象理解的值。

The key here (that I found) is to convert the x and y deltas into translate values, which the path object understands.

http://www.nathancolgate.com/post/2946823151/drag-and-drop-paths-in-raphael-js

有效地相同的方法：

var paper = Raphael(10, 50, 320, 200);

var tri = paper.path("M0 0L0 20L25 10L0 0Z").attr("fill", "#ff0");
var rex = paper.rect(10, 20, 50, 50).attr("fill", "#ff0");

var start = function () {
  this.odx = 0;
  this.ody = 0;
  this.animate({"fill-opacity": 0.2}, 500);
},
move = function (dx, dy) {
  this.translate(dx - this.odx, dy - this.ody);
  this.odx = dx;
  this.ody = dy;
},
up = function () {
    this.animate({"fill-opacity": 1}, 500);
};

tri.drag(move, start, up);
rex.drag(move, start, up);

这篇关于使路线和图像在拉斐尔js可以拖拉的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！