def __init__(self): """App for creating Quad tree dynamically and executing range queries.""" self.tree = QuadTree(Region(0, 0, W, H)) self.match = None # for range query self.selectedRegion = None self.queryRect = None self.master = tkinter.Tk() self.master.title('Quad Tree Range Application') self.w = tkinter.Frame(self.master, width=W, height=H) self.canvas = tkinter.Canvas(self.w, width=W, height=H) self.paint() self.canvas.bind("<Button-1>", self.click) self.canvas.bind("<Button-3>", self.range) # when right mouse clicked self.canvas.bind("<ButtonRelease-3>", self.clear) self.canvas.bind("<B3-Motion>", self.range) # only when right mouse dragged # Different bindings on Macintosh platform self.canvas.bind("<Button-2>", self.range) # when right mouse clicked self.canvas.bind("<ButtonRelease-2>", self.clear) self.canvas.bind("<B2-Motion>", self.range) # only when right mouse dragged self.w.pack()
def __init__(self): """App for creating Quad tree dynamically and executing range queries.""" self.tree = QuadTree(Region(0,0,W,H)) self.match = None # for range query self.selectedRegion = None self.queryRect = None self.master = tkinter.Tk() self.master.title('Quad Tree Range Application') self.w = tkinter.Frame(self.master, width=W, height=H) self.canvas = tkinter.Canvas(self.w, width=W, height=H) self.paint() self.canvas.bind("<Button-1>", self.click) self.canvas.bind("<Button-3>", self.range) # when right mouse clicked self.canvas.bind("<ButtonRelease-3>", self.clear) self.canvas.bind("<B3-Motion>", self.range) # only when right mouse dragged # Different bindings on Macintosh platform self.canvas.bind("<Button-2>", self.range) # when right mouse clicked self.canvas.bind("<ButtonRelease-2>", self.clear) self.canvas.bind("<B2-Motion>", self.range) # only when right mouse dragged self.w.pack()
class QuadTreeApp: def __init__(self): """App for creating Quad tree dynamically and executing range queries.""" self.tree = QuadTree(Region(0, 0, W, H)) self.match = None # for range query self.selectedRegion = None self.queryRect = None self.master = tkinter.Tk() self.master.title('Quad Tree Range Application') self.w = tkinter.Frame(self.master, width=W, height=H) self.canvas = tkinter.Canvas(self.w, width=W, height=H) self.paint() self.canvas.bind("<Button-1>", self.click) self.canvas.bind("<Button-3>", self.range) # when right mouse clicked self.canvas.bind("<ButtonRelease-3>", self.clear) self.canvas.bind("<B3-Motion>", self.range) # only when right mouse dragged # Different bindings on Macintosh platform self.canvas.bind("<Button-2>", self.range) # when right mouse clicked self.canvas.bind("<ButtonRelease-2>", self.clear) self.canvas.bind("<B2-Motion>", self.range) # only when right mouse dragged self.w.pack() def toCartesian(self, y): """Convert tkinter point into Cartesian""" return self.w.winfo_height() - y def toTk(self, y): """Convert Cartesian into tkinter point.""" if y == maxValue: return 0 tk_y = self.w.winfo_height() if y != minValue: tk_y -= y return tk_y def clear(self, event): """End of range search.""" self.selectedRegion = None self.paint() def range(self, event): """Initiate a range search using a selected rectangular region.""" p = (event.x, self.toCartesian(event.y)) if self.selectedRegion is None: self.selectedStart = Region(p[X], p[Y], p[X], p[Y]) self.selectedRegion = self.selectedStart.unionPoint(p) self.paint() # return (node,status) where status is True if draining entire tree rooted at node. Draw these # all in Yellow using another inorder traversal for pair in self.tree.range(self.selectedRegion): if pair[1]: self.canvas.create_rectangle(pair[0].region.x_min, self.toTk(pair[0].region.y_min), pair[0].region.x_max, self.toTk(pair[0].region.y_max), fill='Red', stipple='gray12') else: p = pair[0][0] # ignore data and grab point self.canvas.create_rectangle(p[X] - RectangleSize, self.toTk(p[Y]) - RectangleSize, p[X] + RectangleSize, self.toTk(p[Y]) + RectangleSize, fill='Red') self.queryRect = self.canvas.create_rectangle( self.selectedRegion.x_min, self.toTk(self.selectedRegion.y_min), self.selectedRegion.x_max, self.toTk(self.selectedRegion.y_max), outline='Red', dash=(2, 4)) def click(self, event): """Add point to QuadTree.""" p = (event.x, self.toCartesian(event.y)) self.tree.add(p) self.paint() def visit(self, node): """ Visit node to paint properly.""" if node == None: return if node.points is None: r = node.region self.canvas.create_rectangle(r.x_min, self.toTk(r.y_min), r.x_max, self.toTk(r.y_max)) self.canvas.create_line(r.x_min, self.toTk(node.origin[Y]), r.x_max, self.toTk(node.origin[Y]), fill='black', dash=(2, 4)) self.canvas.create_line(node.origin[X], self.toTk(r.y_min), node.origin[X], self.toTk(r.y_max), fill='black', dash=(2, 4)) for n in node.children: self.visit(n) else: for p in node.points: self.canvas.create_rectangle(p[X] - RectangleSize, self.toTk(p[Y]) - RectangleSize, p[X] + RectangleSize, self.toTk(p[Y]) + RectangleSize, fill='Black') def prepare(self, event): """prepare to add points.""" if self.label: self.label.destroy() self.label = None self.canvas.pack() def paint(self): """Paint Quad tree by visiting all nodes, or show introductory message.""" if self.tree.root: self.canvas.delete(tkinter.ALL) self.visit(self.tree.root) else: self.label = tkinter.Label(self.w, width=100, height=40, text="Click To Add Points") self.label.bind("<Button-1>", self.prepare) self.label.pack()
class QuadTreeApp: def __init__(self): """App for creating Quad tree dynamically and executing range queries.""" self.tree = QuadTree(Region(0,0,W,H)) self.match = None # for range query self.selectedRegion = None self.queryRect = None self.master = tkinter.Tk() self.master.title('Quad Tree Range Application') self.w = tkinter.Frame(self.master, width=W, height=H) self.canvas = tkinter.Canvas(self.w, width=W, height=H) self.paint() self.canvas.bind("<Button-1>", self.click) self.canvas.bind("<Button-3>", self.range) # when right mouse clicked self.canvas.bind("<ButtonRelease-3>", self.clear) self.canvas.bind("<B3-Motion>", self.range) # only when right mouse dragged # Different bindings on Macintosh platform self.canvas.bind("<Button-2>", self.range) # when right mouse clicked self.canvas.bind("<ButtonRelease-2>", self.clear) self.canvas.bind("<B2-Motion>", self.range) # only when right mouse dragged self.w.pack() def toCartesian(self, y): """Convert tkinter point into Cartesian""" return self.w.winfo_height() - y def toTk(self,y): """Convert Cartesian into tkinter point.""" if y == maxValue: return 0 tk_y = self.w.winfo_height() if y != minValue: tk_y -= y return tk_y def clear(self, event): """End of range search.""" self.selectedRegion = None self.paint() def range(self, event): """Initiate a range search using a selected rectangular region.""" p = (event.x, self.toCartesian(event.y)) if self.selectedRegion is None: self.selectedStart = Region(p[X],p[Y], p[X],p[Y]) self.selectedRegion = self.selectedStart.unionPoint(p) self.paint() # return (node,status) where status is True if draining entire tree rooted at node. Draw these # all in Yellow using another inorder traversal for pair in self.tree.range(self.selectedRegion): if pair[1]: self.canvas.create_rectangle(pair[0].region.x_min, self.toTk(pair[0].region.y_min), pair[0].region.x_max, self.toTk(pair[0].region.y_max), fill='Red', stipple='gray12') else: p = pair[0][0] # ignore data and grab point self.canvas.create_rectangle(p[X] - RectangleSize, self.toTk(p[Y]) - RectangleSize, p[X] + RectangleSize, self.toTk(p[Y]) + RectangleSize, fill='Red') self.queryRect = self.canvas.create_rectangle(self.selectedRegion.x_min, self.toTk(self.selectedRegion.y_min), self.selectedRegion.x_max, self.toTk(self.selectedRegion.y_max), outline='Red', dash=(2, 4)) def click(self, event): """Add point to QuadTree.""" p = (event.x, self.toCartesian(event.y)) self.tree.add(p) self.paint() def visit (self, node): """ Visit node to paint properly.""" if node == None: return if node.points is None: r = node.region self.canvas.create_rectangle(r.x_min, self.toTk(r.y_min), r.x_max, self.toTk(r.y_max)) self.canvas.create_line(r.x_min, self.toTk(node.origin[Y]), r.x_max, self.toTk(node.origin[Y]), fill='black', dash=(2, 4)) self.canvas.create_line(node.origin[X], self.toTk(r.y_min), node.origin[X], self.toTk(r.y_max), fill='black', dash=(2, 4)) for n in node.children: self.visit(n) else: for p in node.points: self.canvas.create_rectangle(p[X] - RectangleSize, self.toTk(p[Y]) - RectangleSize, p[X] + RectangleSize, self.toTk(p[Y]) + RectangleSize, fill='Black') def prepare(self, event): """prepare to add points.""" if self.label: self.label.destroy() self.label = None self.canvas.pack() def paint(self): """Paint Quad tree by visiting all nodes, or show introductory message.""" if self.tree.root: self.canvas.delete(tkinter.ALL) self.visit(self.tree.root) else: self.label = tkinter.Label(self.w, width=100, height = 40, text="Click To Add Points") self.label.bind("<Button-1>", self.prepare) self.label.pack()