<p>谢谢你非常完整的回答!
你的代码运行得很好。
为了设置多个阈值转换,我对你的类InfiniteLineWithBreak做了一些修改。
我只修改了<strong>init</strong>和paint方法:</p>
<pre><code>def __init__(self, listOfcouplesOfThresholdAndItsDate, pen=None):
pg.GraphicsObject.__init__(self)
self.listOfcouplesOfThresholdAndItsDate=listOfcouplesOfThresholdAndItsDate
self.maxRange = [None, None]
self.moving = False
self.movable = False
self.mouseHovering = False
pen = (200, 200, 100)
self.setPen(pen)
self.setHoverPen(color=(255,0,0), width=self.pen.width())
self.currentPen = self.pen
def paint(self, p, *args):
br = self.boundingRect()
p.setPen(self.currentPen)
if len(self.listOfcouplesOfThresholdAndItsDate)==0:
pass
elif len(self.listOfcouplesOfThresholdAndItsDate)==1:
threshold = self.listOfcouplesOfThresholdAndItsDate[0][1]
date = self.listOfcouplesOfThresholdAndItsDate[0][0]
p.drawLine(pg.Point(date, threshold), pg.Point(br.right(), threshold))
else:
threshold = self.listOfcouplesOfThresholdAndItsDate[0][1]
date = self.listOfcouplesOfThresholdAndItsDate[0][0]
i=0
for i in range(0, len(self.listOfcouplesOfThresholdAndItsDate)-2):
threshold = self.listOfcouplesOfThresholdAndItsDate[i][1]
date = self.listOfcouplesOfThresholdAndItsDate[i][0]
nexteDate = self.listOfcouplesOfThresholdAndItsDate[i+1][0]
nextThreshold = self.listOfcouplesOfThresholdAndItsDate[i+1][1]
p.drawLine(pg.Point(date, threshold), pg.Point(nexteDate, threshold))
p.drawLine(pg.Point(nexteDate, threshold), pg.Point(nexteDate, nextThreshold))
threshold = self.listOfcouplesOfThresholdAndItsDate[-2][1]
date = self.listOfcouplesOfThresholdAndItsDate[-2][0]
nexteDate = self.listOfcouplesOfThresholdAndItsDate[-1][0]
nextThreshold = self.listOfcouplesOfThresholdAndItsDate[-1][1]
p.drawLine(pg.Point(date, threshold), pg.Point(nexteDate, threshold))
p.drawLine(pg.Point(nexteDate, threshold), pg.Point(nexteDate, nextThreshold))
p.drawLine(pg.Point(nexteDate, nextThreshold), pg.Point(br.right(), nextThreshold))
</code></pre>
<p>此外,我还添加了一个方法,将一个新的阈值转换点附加到HersHoldAndItsDate的耦合列表中:</p>
^{pr2}$
<p>下面是它的一个示例:
<a href="http://i.stack.imgur.com/ivR0M.jpg" rel="nofollow">example of multiple thresholds</a></p>
<p>你觉得代码没问题吧?
谢谢你</p>