I can't seem to append points to the end of a line dynamically - the added points are invisible until I add a new display object to the scene.
This works to get the result I need:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | local function updateLine(self) if(self.circle ~= nil) then self.circle:removeSelf(); end self.circle = display.newCircle(0,0,1); self.circle.isVisible = false; self.group:insert(self.circle); end local function drawLine(self) --....................................... -- Somewhere along the way self.lineTrace was initialized -- ...................................... local curPoint = self.vector[curPointNumber]; self.lineTrace:append(curPoint[1], curPoint[2]); updateLine(self); end -- Then I call this drawLine method in response to touch events |
Came up with this bit:
1 2 3 | local function updateLine(self) self.lineTrace.width = (self.lineTraceWidth * 2 + 1) - self.lineTrace.width; end |
views:1518 update：2011/9/28 8:56:32