完整源代码位于：http://codepen.io/geewhizbang/full/XKLdLE/
我想让笔画宽度沿着蛇的长度变化。在蛇的末尾之前，笔划宽度应该逐渐减小到零。
但如果我写一个函数来做这件事，它就不知道“（d）”
gameBoard.append('path')
.attr("id", snakeId)
.attr("d", interpolator(data))
.attr('stroke-width', snakeStroke + 2)
.attr('fill', 'none')
.attr('stroke', config.snakeOutlineColor);
gameBoard.append('path')
.attr("d", interpolator(data))
.attr('stroke-width', snakeStroke)
.attr('fill', 'none')
.attr('stroke', config.snakeColor);
答案 0 :(得分：1)
您可以在开始和结束时使用标记来制作头部和尾部，并且可以使用精心设计的stroke-dasharray和过滤器组合来破解可变宽度笔划 - 这是一个示例。
（但正如罗伯特上面所说 - 只是画一条路并填充它更容易！）
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