--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/orpg/map/_fog.py	Tue Jul 14 16:41:58 2009 -0500
@@ -0,0 +1,92 @@
+from math import sqrt
+
+import wx
+
+import orpg.dirpath
+from orpg.orpgCore import *
+
+from _object import MapObject
+
+class FogLayer(MapObject):
+    def __init__(self, canvas):
+        MapObject.__init__(self, canvas=canvas)
+
+    def Draw(self, dc):
+        path = dc.CreatePath()
+        r, g, b = self.RGBHex.rgb_tuple(self.canvas.fogColor)
+        if self.canvas.toolWnd.gmToolBar.IsShown():
+            brush = wx.Brush(wx.Color(r, g, b, 128))
+        else:
+            brush = wx.Brush(wx.Color(r, g, b, 255))
+        dc.SetBrush(brush)
+
+        self.region = wx.Region(0, 0, self.canvas.size[0]+2, self.canvas.size[1]+2)
+
+        points = []
+        lp = 's'
+        for point in self.canvas.fogRegion:
+            if point == 's' or point == 'h':
+                if lp == 's' and len(points) > 0:
+                    self.region.XorRegion(wx.RegionFromPoints(points))
+                    self.region.SubtractRegion(wx.RegionFromPoints(points))
+                elif len(points) > 0:
+                    self.region.UnionRegion(wx.RegionFromPoints(points))
+                lp = point
+                points = []
+            else:
+                points.append((point.x, point.y))
+
+        if len(points) > 0:
+            if lp == 's':
+                self.region.XorRegion(wx.RegionFromPoints(points))
+                self.region.SubtractRegion(wx.RegionFromPoints(points))
+            else:
+                self.region.UnionRegion(wx.RegionFromPoints(points))
+
+        dc.ClipRegion(self.region)
+
+        dc.DrawRectangle(0, 0, self.canvas.size[0]+2, self.canvas.size[1]+2)
+
+        dc.SetBrush(wx.NullBrush)
+
+    def OnLeftDown(self, pos):
+        self.start = pos
+        self.lastPoint = pos
+        if self.canvas.toolWnd.currentFog == 'Show':
+            self.canvas.fogRegion.append('s')
+        else:
+            self.canvas.fogRegion.append('h')
+        self.canvas.fogRegion.append(pos)
+
+    def OnMotion(self, pos):
+        cdc = wx.ClientDC(self.canvas)
+        self.canvas.PrepareDC(cdc)
+
+        dc = wx.GraphicsContext.Create(cdc)
+        dc.Scale(self.canvas.zoomScale, self.canvas.zoomScale)
+
+        dc.SetPen(wx.WHITE_PEN)
+
+        path = dc.CreatePath()
+
+        xd = (self.lastPoint.x-pos.x)*(self.lastPoint.x-pos.x)
+        yd = (self.lastPoint.y-pos.y)*(self.lastPoint.y-pos.y)
+        distance = sqrt(xd+yd)
+
+        if distance > 5:
+            path.MoveToPoint(self.lastPoint.x, self.lastPoint.y)
+            path.AddLineToPoint(pos.x, pos.y)
+
+            self.canvas.fogRegion.append(pos)
+            self.lastPoint = pos
+
+        path.CloseSubpath()
+        dc.StrokePath(path)
+
+        dc.SetPen(wx.NullPen)
+
+    def OnLeftUp(self, pos):
+        self.canvas.fogRegion.append(pos)
+        self.canvas.fogRegion.append(self.start)
+        self.canvas.UpdateMap()
+