[Pyobjc-dev] Bridging NSRectFillList()

[Bill B. <bb...@co...>]

I added bridge code for NSRectFillList() in _AppKit.m.     For 
example....

     def drawRect_(self, aRect):
         if self.backingStore:
             self.backingStore.draw()
         else:
             self.eraseView_(aRect)

         for pointArray, rectCount, color in self.pointsCountsAndColors:
             color.set()
             NSRectFillList(pointArray, rectCount)

         self.pointsCountsAndColors = []
         self.backingStore = 
NSBitmapImageRep.alloc().initWithFocusedViewRect_(self.bounds())

... where pointArray was created as ....

         pointsArray = array.array('f', [0.0,0.0,1.0,1.0] * len(points))
         rectCount = 0
         for p in points:
             x = int(round(p[0]))
             y = int(round(p[1]))
             if (x >= 0) and (x < pixelsWide) and (y >= 0) and (y < 
pixelsHigh):
                 pointsArray[ (rectCount * 4) ] = x
                 pointsArray[ (rectCount * 4) + 1 ] = y
                 rectCount += 1

         self.pointsCountsAndColors.append((pointsArray, rectCount, 
aColor))

... the rectCount argument is optional.  In this case, I preallocate 
the array to the maximum number of points and then count only the 
points that fall within the bounds of the view.

In any case, this pattern of bridging is very, very fast and the 
addition to _AppKit.m is quite straightforward.

b.bum