Hello, A small question : sometimes I want to get the (x,y) hitcoords when clicking on an 309x34 pixels image, and I would like x to be an integer in [0, 308], but when self.canvas.ZoomToBB() has been used, sometimes the (x,y) coordinates are a bit "off" of some pixels.
For example, when using x = event.HitCoords[0] -
event.BoundingBox[0,0], the range I get for x is [-1.2598, 302.24277] =>
how to get [0,308] instead ?
Is there a parameter somewhere for HitCoords accuracy ? (high, medium,
etc.)
Best regards, Jo
____
import wx
from wx.lib.floatcanvas import FloatCanvas
class TestFrame(wx.Frame):
def __init__(self, *args, **kwargs):
wx.Frame.__init__(self, *args, **kwargs)
self.canvas =FloatCanvas.FloatCanvas(self, BackgroundColor = "DARK
SLATE BLUE")
MainSizer = wx.BoxSizer(wx.VERTICAL)
MainSizer.Add(self.canvas, 4, wx.EXPAND)
self.SetSizer(MainSizer)
img = wx.Image('mypng(309x34).png')
A = self.canvas.AddScaledBitmap(img, (0,0), Height=img.GetHeight(),
Position = 'tl')
A.Bind(FloatCanvas.EVT_FC_MOTION, self.OnMotion)
wx.CallAfter(self.canvas.ZoomToBB)
def OnMotion(self, event):
x, y = event.HitCoords[0] - event.BoundingBox[0,0],
event.BoundingBox[1,1] - event.HitCoords[1]
print x, y # the max range I can get for x is [-1.2598,
302.24277] => how to get [0,308] instead ?
app = wx.App(0)
frame = TestFrame(None, title="Image hitcoords", size=(300,200))
frame.Show(True)
app.MainLoop()
<<attachment: mypng(309x34).png>>
import wx
from wx.lib.floatcanvas import FloatCanvas
class TestFrame(wx.Frame):
def __init__(self, *args, **kwargs):
wx.Frame.__init__(self, *args, **kwargs)
self.canvas =FloatCanvas.FloatCanvas(self, BackgroundColor = "DARK SLATE BLUE")
MainSizer = wx.BoxSizer(wx.VERTICAL)
MainSizer.Add(self.canvas, 4, wx.EXPAND)
self.SetSizer(MainSizer)
img = wx.Image('mypng(309x34).png')
A = self.canvas.AddScaledBitmap(img, (0,0), Height=img.GetHeight(), Position = 'tl')
A.Bind(FloatCanvas.EVT_FC_MOTION, self.OnMotion)
wx.CallAfter(self.canvas.ZoomToBB)
def OnMotion(self, event):
x, y = event.HitCoords[0] - event.BoundingBox[0,0], event.BoundingBox[1,1] - event.HitCoords[1]
print x, y # the max range I can get for x is [-1.2598, 302.24277] => how to get [0,308] instead ?
app = wx.App(0)
frame = TestFrame(None, title="Image hitcoords", size=(300,200))
frame.Show(True)
app.MainLoop()
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