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The convention when importing numpy is to use `import numpy as np` Fixes: unconventional-import-alias (ICN001) Ruff rule: https://docs.astral.sh/ruff/rules/unconventional-import-alias/
96 lines
2.1 KiB
Python
96 lines
2.1 KiB
Python
#!/usr/bin/env python
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"""
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This demonstrates how to use FloatCanvas with a coordinate system where
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Y is increased down, instead of up. This is a standard system for
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images, for instance.
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Note that there are some problems with doing this for bitmaps and text: things that require positioning.
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I'm sure it can be fixed, but I don't have a need for it, so I haven't taken the time yet.
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-chb
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"""
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import wx
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## import the installed version
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from wx.lib.floatcanvas import NavCanvas, FloatCanvas
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## import a local version
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#import sys
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#sys.path.append("..")
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#from floatcanvas import NavCanvas, FloatCanvas
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import numpy as np
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def YDownProjection(CenterPoint):
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return np.array((1,-1))
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class DrawFrame(wx.Frame):
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"""
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A frame used for the FloatCanvas Demo
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"""
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def __init__(self, *args, **kwargs):
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wx.Frame.__init__(self, *args, **kwargs)
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self.CreateStatusBar()
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# Add the Canvas
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Canvas = NavCanvas.NavCanvas(self,-1,
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size = (500,500),
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ProjectionFun = YDownProjection,
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Debug = 0,
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BackgroundColor = "DARK SLATE BLUE",
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).Canvas
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self.Canvas = Canvas
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Point = (0,0)
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Box = Canvas.AddRectangle(Point,
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(80,100),
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FillColor = "blue"
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)
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Canvas.AddText("%s"%(Point,), Point, Position="cr")
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Canvas.AddPoint(Point, Diameter=3, Color = "red")
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Point = (0,100)
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Canvas.AddText("%s"%(Point,), Point, Position="cr")
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Canvas.AddPoint(Point, Diameter=3, Color = "red")
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self.Canvas.Bind(FloatCanvas.EVT_MOTION, self.OnMove )
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self.Show()
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Canvas.ZoomToBB()
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def OnMove(self, event):
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"""
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Updates the status bar with the world coordinates
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"""
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self.SetStatusText("%.2f, %.2f"%tuple(event.Coords))
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app = wx.App(False)
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F = DrawFrame(None, title="FloatCanvas Demo App", size=(700,700) )
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app.MainLoop()
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