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CNCCanvas.py
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CNCCanvas.py
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# -*- coding: ascii -*-
# $Id: CNCCanvas.py,v 1.7 2014/10/15 15:04:06 bnv Exp $
#
# Author: [email protected]
# Date: 24-Aug-2014
import math
import time
import bmath
try:
from Tkinter import *
import Tkinter
except ImportError:
from tkinter import *
import tkinter as Tkinter
from CNC import Tab, CNC
import Utils
import Camera
import tkExtra
# Probe mapping we need PIL and numpy
try:
from PIL import Image, ImageTk
import numpy
# Resampling image based on PIL library and converting to RGB.
# options possible: NEAREST, BILINEAR, BICUBIC, ANTIALIAS
RESAMPLE = Image.NEAREST # resize type
#RESAMPLE = Image.BILINEAR # resize type
except:
numpy = None
RESAMPLE = None
VIEW_XY = 0
VIEW_XZ = 1
VIEW_YZ = 2
VIEW_ISO1 = 3
VIEW_ISO2 = 4
VIEW_ISO3 = 5
VIEWS = ["X-Y", "X-Z", "Y-Z", "ISO1", "ISO2", "ISO3"]
INSERT_WIDTH2 = 3
GANTRY_R = 4
GANTRY_X = GANTRY_R*2 # 10
GANTRY_Y = GANTRY_R # 5
GANTRY_H = GANTRY_R*5 # 20
DRAW_TIME = 5 # Maximum draw time permitted
INSERT_COLOR = "Blue"
GANTRY_COLOR = "Red"
MARGIN_COLOR = "Magenta"
GRID_COLOR = "Gray"
BOX_SELECT = "Cyan"
TAB_COLOR = "DarkOrange"
WORK_COLOR = "Orange"
CAMERA_COLOR = "Cyan"
CANVAS_COLOR = "White"
ENABLE_COLOR = "Black"
DISABLE_COLOR = "LightGray"
SELECT_COLOR = "Blue"
SELECT2_COLOR = "DarkCyan"
PROCESS_COLOR = "Green"
MOVE_COLOR = "DarkCyan"
RULER_COLOR = "Green"
PROBE_TEXT_COLOR = "Green"
INFO_COLOR = "Gold"
SELECTION_TAGS = ("sel", "sel2", "sel3", "sel4")
ACTION_SELECT = 0
ACTION_SELECT_SINGLE = 1
ACTION_SELECT_AREA = 2
ACTION_SELECT_DOUBLE = 3
ACTION_PAN = 10
ACTION_ORIGIN = 11
ACTION_MOVE = 20
ACTION_ROTATE = 21
ACTION_GANTRY = 22
ACTION_WPOS = 23
ACTION_RULER = 30
ACTION_ADDORIENT = 31
#ACTION_ADDTAB = 40
SHIFT_MASK = 1
CONTROL_MASK = 4
ALT_MASK = 8
CONTROLSHIFT_MASK = SHIFT_MASK | CONTROL_MASK
CLOSE_DISTANCE = 5
MAXDIST = 10000
ZOOM = 1.25
S60 = math.sin(math.radians(60))
C60 = math.cos(math.radians(60))
DEF_CURSOR = ""
MOUSE_CURSOR = {
ACTION_SELECT : DEF_CURSOR,
ACTION_SELECT_AREA : "right_ptr",
ACTION_PAN : "fleur",
ACTION_ORIGIN : "cross",
# ACTION_ORBIT : "exchange",
# ACTION_ZOOM_IN : "sizing",
# ACTION_ZOOM_OUT : "sizing",
# ACTION_ZOOM_ON : "sizing",
# ACTION_VIEW_CENTER : "cross",
# ACTION_VIEW_MOVE : "fleur",
# ACTION_VIEW_ROTATE : "exchange",
# ACTION_ADDTAB : "tcross",
ACTION_MOVE : "hand1",
ACTION_ROTATE : "exchange",
ACTION_GANTRY : "target",
ACTION_WPOS : "diamond_cross",
ACTION_RULER : "tcross",
ACTION_ADDORIENT : "tcross",
# ACTION_EDIT : "pencil",
}
# ------------------------------------------------------------------------------
def mouseCursor(action):
return MOUSE_CURSOR.get(action, DEF_CURSOR)
#==============================================================================
# Raise an alarm exception
#==============================================================================
class AlarmException(Exception):
pass
#==============================================================================
# Drawing canvas
#==============================================================================
class CNCCanvas(Canvas):
def __init__(self, master, app, *kw, **kwargs):
Canvas.__init__(self, master, *kw, **kwargs)
# Global variables
self.view = 0
self.app = app
self.cnc = app.cnc
self.gcode = app.gcode
self.actionVar = IntVar()
# Canvas binding
self.bind('<Configure>', self.configureEvent)
self.bind('<Motion>', self.motion)
self.bind('<Button-1>', self.click)
self.bind('<B1-Motion>', self.buttonMotion)
self.bind('<ButtonRelease-1>', self.release)
self.bind('<Double-1>', self.double)
self.bind('<B2-Motion>', self.pan)
self.bind('<ButtonRelease-2>', self.panRelease)
self.bind("<Button-4>", self.mouseZoomIn)
self.bind("<Button-5>", self.mouseZoomOut)
self.bind("<MouseWheel>", self.wheel)
self.bind('<Shift-Button-4>', self.panLeft)
self.bind('<Shift-Button-5>', self.panRight)
self.bind('<Control-Button-4>', self.panUp)
self.bind('<Control-Button-5>', self.panDown)
self.bind('<Control-Key-Left>', self.panLeft)
self.bind('<Control-Key-Right>',self.panRight)
self.bind('<Control-Key-Up>', self.panUp)
self.bind('<Control-Key-Down>', self.panDown)
self.bind('<Escape>', self.actionCancel)
# self.bind('<Key-a>', lambda e,s=self : s.event_generate("<<SelectAll>>"))
# self.bind('<Key-A>', lambda e,s=self : s.event_generate("<<SelectNone>>"))
# self.bind('<Key-e>', lambda e,s=self : s.event_generate("<<Expand>>"))
# self.bind('<Key-f>', self.fit2Screen)
# self.bind('<Key-g>', self.setActionGantry)
# self.bind('<Key-l>', lambda e,s=self : s.event_generate("<<EnableToggle>>"))
# self.bind('<Key-m>', self.setActionMove)
# self.bind('<Key-n>', lambda e,s=self : s.event_generate("<<ShowInfo>>"))
# self.bind('<Key-o>', self.setActionOrigin)
# self.bind('<Key-r>', self.setActionRuler)
# self.bind('<Key-s>', self.setActionSelect)
## self.bind('<Key-t>', self.setActionAddTab)
# self.bind('<Key-x>', self.setActionPan)
self.bind('<Key>', self.handleKey)
self.bind('<Control-Key-S>', self.cameraSave)
self.bind('<Control-Key-t>', self.__test)
self.bind('<Control-Key-equal>',self.menuZoomIn)
self.bind('<Control-Key-minus>',self.menuZoomOut)
# self.bind('<Control-Key-x>', self.cut)
# self.bind('<Control-Key-c>', self.copy)
# self.bind('<Control-Key-v>', self.paste)
# self.bind('<Key-space>', self.commandFocus)
# self.bind('<Control-Key-space>',self.commandFocus)
# self.bind('<Control-Key-a>', self.selectAll)
self.x0 = 0.0
self.y0 = 0.0
self.zoom = 1.0
self.__tzoom = 1.0 # delayed zoom (temporary)
self._items = {}
self._x = self._y = 0
self._xp = self._yp = 0
self.action = ACTION_SELECT
self._mouseAction = None
self._inDraw = False # semaphore for parsing
self._gantry1 = None
self._gantry2 = None
self._select = None
self._margin = None
self._amargin = None
self._workarea = None
self._vector = None
self._lastActive = None
self._lastGantry = None
self._probeImage = None
self._probeTkImage= None
self._probe = None
self.camera = Camera.Camera("aligncam")
self.cameraAnchor = CENTER # Camera anchor location "" for gantry
self.cameraRotation = 0.0 # camera Z angle
self.cameraXCenter = 0.0 # camera X center offset
self.cameraYCenter = 0.0 # camera Y center offset
self.cameraScale = 10.0 # camera pixels/unit
self.cameraEdge = False # edge detection
self.cameraR = 1.5875 # circle radius in units (mm/inched)
self.cameraDx = 0 # camera shift vs gantry
self.cameraDy = 0
self.cameraZ = None # if None it will not make any Z movement for the camera
self.cameraSwitch = False # Look at spindle(False) or camera(True)
self._cameraAfter = None # Camera anchor location "" for gantry
self._cameraMaxWidth = 640 # on zoom over this size crop the image
self._cameraMaxHeight= 480
self._cameraImage = None
self._cameraHori = None # cross hair items
self._cameraVert = None
self._cameraCircle = None
self._cameraCircle2 = None
self._tab = None
self._tabRect = None
self.draw_axes = True # Drawing flags
self.draw_grid = True
self.draw_margin = True
self.draw_probe = True
self.draw_workarea= True
self.draw_paths = True
self.draw_rapid = True # draw rapid motions
self._wx = self._wy = self._wz = 0. # work position
self._dx = self._dy = self._dz = 0. # work-machine position
self._vx0 = self._vy0 = self._vz0 = 0 # vector move coordinates
self._vx1 = self._vy1 = self._vz1 = 0 # vector move coordinates
self._orientSelected = None
#self.config(xscrollincrement=1, yscrollincrement=1)
self.reset()
self.initPosition()
# ----------------------------------------------------------------------
def reset(self):
self.zoom = 1.0
# ----------------------------------------------------------------------
# Set status message
# ----------------------------------------------------------------------
def status(self, msg):
#self.event_generate("<<Status>>", data=msg.encode("utf8"))
self.event_generate("<<Status>>", data=msg)
# ----------------------------------------------------------------------
def setMouseStatus(self, event):
data="%.4f %.4f %.4f" % self.canvas2xyz(self.canvasx(event.x), self.canvasy(event.y))
self.event_generate("<<Coords>>", data=data)
# ----------------------------------------------------------------------
# Update scrollbars
# ----------------------------------------------------------------------
def _updateScrollBars(self):
"""Update scroll region for new size"""
bb = self.bbox('all')
if bb is None: return
x1,y1,x2,y2 = bb
dx = x2-x1
dy = y2-y1
# make it 3 times bigger in each dimension
# so when we zoom in/out we don't touch the borders
self.configure(scrollregion=(x1-dx,y1-dy,x2+dx,y2+dy))
# ----------------------------------------------------------------------
def handleKey(self, event):
ctrl = event.state & CONTROL_MASK
if event.char == "a":
self.event_generate("<<SelectAll>>")
elif event.char == "A":
self.event_generate("<<SelectNone>>")
elif event.char == "e":
self.event_generate("<<Expand>>")
elif event.char == "f":
self.fit2Screen()
elif event.char == "g":
self.setActionGantry()
elif event.char == "l":
self.event_generate("<<EnableToggle>>")
elif event.char == "m":
self.setActionMove()
elif event.char == "n":
self.event_generate("<<ShowInfo>>")
elif event.char == "o":
self.setActionOrigin()
elif event.char == "r":
self.setActionRuler()
elif event.char == "s":
self.setActionSelect()
# elif event.char == "t":
# self.setActionAddTab()
elif event.char == "x":
self.setActionPan()
elif event.char == "z":
self.menuZoomIn()
elif event.char == "Z":
self.menuZoomOut()
# ----------------------------------------------------------------------
def setAction(self, action):
self.action = action
self.actionVar.set(action)
self._mouseAction = None
self.config(cursor=mouseCursor(self.action), background="White")
# ----------------------------------------------------------------------
def actionCancel(self, event=None):
if self.action != ACTION_SELECT or \
(self._mouseAction != ACTION_SELECT and self._mouseAction is not None):
self.setAction(ACTION_SELECT)
return "break"
#self.draw()
# ----------------------------------------------------------------------
def setActionSelect(self, event=None):
self.setAction(ACTION_SELECT)
self.status(_("Select objects with mouse"))
# ----------------------------------------------------------------------
def setActionPan(self, event=None):
self.setAction(ACTION_PAN)
self.status(_("Pan viewport"))
# ----------------------------------------------------------------------
def setActionOrigin(self, event=None):
self.setAction(ACTION_ORIGIN)
self.status(_("Click to set the origin (zero)"))
# ----------------------------------------------------------------------
def setActionMove(self, event=None):
self.setAction(ACTION_MOVE)
self.status(_("Move graphically objects"))
# ----------------------------------------------------------------------
def setActionGantry(self, event=None):
self.setAction(ACTION_GANTRY)
self.config(background="seashell")
self.status(_("Move CNC gantry to mouse location"))
# ----------------------------------------------------------------------
def setActionWPOS(self, event=None):
self.setAction(ACTION_WPOS)
self.config(background="ivory")
self.status(_("Set mouse location as current machine position (X/Y only)"))
# ----------------------------------------------------------------------
def setActionRuler(self, event=None):
self.setAction(ACTION_RULER)
self.status(_("Drag a ruler to measure distances"))
# ----------------------------------------------------------------------
def setActionAddMarker(self, event=None):
self.setAction(ACTION_ADDORIENT)
self.status(_("Add an orientation marker"))
# # ----------------------------------------------------------------------
# def setActionAddTab(self, event=None):
# self.setAction(ACTION_ADDTAB)
# self.status(_("Draw a square tab"))
# ----------------------------------------------------------------------
# Convert canvas cx,cy coordinates to machine space
# ----------------------------------------------------------------------
def canvas2Machine(self, cx, cy):
u = cx / self.zoom
v = cy / self.zoom
if self.view == VIEW_XY:
return u, -v, None
elif self.view == VIEW_XZ:
return u, None, -v
elif self.view == VIEW_YZ:
return None, u, -v
elif self.view == VIEW_ISO1:
return 0.5*(u/S60+v/C60), 0.5*(u/S60-v/C60), None
elif self.view == VIEW_ISO2:
return 0.5*(u/S60-v/C60), -0.5*(u/S60+v/C60), None
elif self.view == VIEW_ISO3:
return -0.5*(u/S60+v/C60), -0.5*(u/S60-v/C60), None
# ----------------------------------------------------------------------
# Image (pixel) coordinates to machine
# ----------------------------------------------------------------------
def image2Machine(self, x, y):
return self.canvas2Machine(self.canvasx(x), self.canvasy(y))
# ----------------------------------------------------------------------
# Move gantry to mouse location
# ----------------------------------------------------------------------
def actionGantry(self, x, y):
u,v,w = self.image2Machine(x,y)
self.app.goto(u,v,w)
self.setAction(ACTION_SELECT)
# ----------------------------------------------------------------------
# Set the work coordinates to mouse location
# ----------------------------------------------------------------------
def actionWPOS(self, x, y):
u,v,w = self.image2Machine(x,y)
self.app.dro.wcsSet(u,v,w)
self.setAction(ACTION_SELECT)
# ----------------------------------------------------------------------
# Add an orientation marker at mouse location
# ----------------------------------------------------------------------
def actionAddOrient(self, x, y):
cx,cy = self.snapPoint(self.canvasx(x), self.canvasy(y))
u,v,w = self.canvas2Machine(cx,cy)
if u is None or v is None:
self.status(_("ERROR: Cannot set X-Y marker with the current view"))
return
self._orientSelected = len(self.gcode.orient)
self.gcode.orient.add(CNC.vars["wx"], CNC.vars["wy"], u, v)
self.event_generate("<<OrientSelect>>", data=self._orientSelected)
#self.drawOrient()
self.setAction(ACTION_SELECT)
# ----------------------------------------------------------------------
# Find item selected
# ----------------------------------------------------------------------
def click(self, event):
self.focus_set()
self._x = self._xp = event.x
self._y = self._yp = event.y
if event.state & CONTROLSHIFT_MASK == CONTROLSHIFT_MASK:
self.actionGantry(event.x, event.y)
return
elif self.action == ACTION_SELECT:
#if event.state & CONTROLSHIFT_MASK == CONTROLSHIFT_MASK:
#self._mouseAction = ACTION_SELECT
#else:
self._mouseAction = ACTION_SELECT_SINGLE
elif self.action in (ACTION_MOVE, ACTION_RULER):
i = self.canvasx(event.x)
j = self.canvasy(event.y)
if self.action == ACTION_RULER and self._vector is not None:
# Check if we hit the existing ruler
coords = self.coords(self._vector)
if abs(coords[0]-i)<=CLOSE_DISTANCE and abs(coords[1]-j<=CLOSE_DISTANCE):
# swap coordinates
coords[0],coords[2] = coords[2], coords[0]
coords[1],coords[3] = coords[3], coords[1]
self.coords(self._vector, *coords)
self._vx0, self._vy0, self._vz0 = self.canvas2xyz(coords[0], coords[1])
self._mouseAction = self.action
return
elif abs(coords[2]-i)<=CLOSE_DISTANCE and abs(coords[3]-j<=CLOSE_DISTANCE):
self._mouseAction = self.action
return
if self._vector: self.delete(self._vector)
if self.action == ACTION_MOVE:
# Check if we clicked on a selected item
try:
for item in self.find_overlapping(i-CLOSE_DISTANCE, j-CLOSE_DISTANCE,
i+CLOSE_DISTANCE, j+CLOSE_DISTANCE):
tags = self.gettags(item)
if "sel" in tags or "sel2" in tags or \
"sel3" in tags or "sel4" in tags:
break
else:
self._mouseAction = ACTION_SELECT_SINGLE
return
fill = MOVE_COLOR
arrow = LAST
except:
self._mouseAction = ACTION_SELECT_SINGLE
return
else:
fill = RULER_COLOR
arrow = BOTH
self._vector = self.create_line((i,j,i,j), fill=fill, arrow=arrow)
self._vx0, self._vy0, self._vz0 = self.canvas2xyz(i,j)
self._mouseAction = self.action
# Move gantry to position
elif self.action == ACTION_GANTRY:
self.actionGantry(event.x,event.y)
# Move gantry to position
elif self.action == ACTION_WPOS:
self.actionWPOS(event.x,event.y)
# Add orientation marker
elif self.action == ACTION_ADDORIENT:
self.actionAddOrient(event.x,event.y)
# Set coordinate origin
elif self.action == ACTION_ORIGIN:
i = self.canvasx(event.x)
j = self.canvasy(event.y)
x,y,z = self.canvas2xyz(i,j)
self.app.insertCommand(_("origin %g %g %g")%(x,y,z),True)
self.setActionSelect()
elif self.action == ACTION_PAN:
self.pan(event)
# # Add tab
# elif self.action == ACTION_ADDTAB:
# i = self.canvasx(event.x)
# j = self.canvasy(event.y)
# x,y,z = self.canvas2xyz(i,j)
# x = round(x,CNC.digits)
# y = round(y,CNC.digits)
# z = round(z,CNC.digits)
# # use the same z as the last tab added in gcode
# if self.gcode.tabs: z = self.gcode.tabs[-1].z
# self._tab = Tab(x,y,x,y,z)
# self._tabRect = self._drawRect(
# self._tab.x-self._tab.dx, self._tab.y-self._tab.dy,
# self._tab.x+self._tab.dx, self._tab.y+self._tab.dy,
# fill=TAB_COLOR)
# self._mouseAction = self.action
# ----------------------------------------------------------------------
# Canvas motion button 1
# ----------------------------------------------------------------------
def buttonMotion(self, event):
if self._mouseAction == ACTION_SELECT_AREA:
self.coords(self._select,
self.canvasx(self._x),
self.canvasy(self._y),
self.canvasx(event.x),
self.canvasy(event.y))
elif self._mouseAction in (ACTION_SELECT_SINGLE, ACTION_SELECT_DOUBLE):
if abs(event.x-self._x)>4 or abs(event.y-self._y)>4:
self._mouseAction = ACTION_SELECT_AREA
self._select = self.create_rectangle(
self.canvasx(self._x),
self.canvasy(self._y),
self.canvasx(event.x),
self.canvasy(event.y),
outline=BOX_SELECT)
elif self._mouseAction in (ACTION_MOVE, ACTION_RULER):
coords = self.coords(self._vector)
i = self.canvasx(event.x)
j = self.canvasy(event.y)
coords[-2] = i
coords[-1] = j
self.coords(self._vector, *coords)
if self._mouseAction == ACTION_MOVE:
self.move("sel", event.x-self._xp, event.y-self._yp)
self.move("sel2", event.x-self._xp, event.y-self._yp)
self.move("sel3", event.x-self._xp, event.y-self._yp)
self.move("sel4", event.x-self._xp, event.y-self._yp)
self._xp = event.x
self._yp = event.y
self._vx1, self._vy1, self._vz1 = self.canvas2xyz(i,j)
dx=self._vx1-self._vx0
dy=self._vy1-self._vy0
dz=self._vz1-self._vz0
self.status(_("dx=%g dy=%g dz=%g length=%g angle=%g")\
% (dx,dy,dz,math.sqrt(dx**2+dy**2+dz**2),
math.degrees(math.atan2(dy,dx))))
elif self._mouseAction == ACTION_PAN:
self.pan(event)
# Resize tab
# elif self._mouseAction == ACTION_ADDTAB:
# i = self.canvasx(event.x)
# j = self.canvasy(event.y)
# x,y,z = self.canvas2xyz(i,j)
# x = round(x,CNC.digits)
# y = round(y,CNC.digits)
# self._tab.xmax = x
# self._tab.ymax = y
# self._rectCoords(self._tabRect,
# self._tab.x-self._tab.dx, self._tab.y-self._tab.dy,
# self._tab.x+self._tab.dx, self._tab.y+self._tab.dy)
self.setMouseStatus(event)
# ----------------------------------------------------------------------
# Canvas release button1. Select area
# ----------------------------------------------------------------------
def release(self, event):
if self._mouseAction in (ACTION_SELECT_SINGLE,
ACTION_SELECT_DOUBLE,
ACTION_SELECT_AREA):
if self._mouseAction == ACTION_SELECT_AREA:
#if event.state & SHIFT_MASK == 0:
if self._x < event.x: # From left->right enclosed
closest = self.find_enclosed(
self.canvasx(self._x),
self.canvasy(self._y),
self.canvasx(event.x),
self.canvasy(event.y))
else: # From right->left overlapping
closest = self.find_overlapping(
self.canvasx(self._x),
self.canvasy(self._y),
self.canvasx(event.x),
self.canvasy(event.y))
self.delete(self._select)
self._select = None
items = []
for i in closest:
try: items.append(self._items[i])
except: pass
elif self._mouseAction in (ACTION_SELECT_SINGLE, ACTION_SELECT_DOUBLE):
closest = self.find_closest( self.canvasx(event.x),
self.canvasy(event.y),
CLOSE_DISTANCE)
items = []
for i in closest:
try:
items.append(self._items[i])
#i = None
except KeyError:
tags = self.gettags(i)
if "Orient" in tags:
self.selectMarker(i)
return
#i = self.find_below(i)
pass
if not items: return
self.app.select(items, self._mouseAction==ACTION_SELECT_DOUBLE,
event.state&CONTROL_MASK==0)
self._mouseAction = None
elif self._mouseAction == ACTION_MOVE:
i = self.canvasx(event.x)
j = self.canvasy(event.y)
self._vx1, self._vy1, self._vz1 = self.canvas2xyz(i,j)
dx=self._vx1-self._vx0
dy=self._vy1-self._vy0
dz=self._vz1-self._vz0
self.status(_("Move by %g, %g, %g")%(dx,dy,dz))
self.app.insertCommand(("move %g %g %g")%(dx,dy,dz),True)
elif self._mouseAction == ACTION_PAN:
self.panRelease(event)
# # Finalize tab
# elif self._mouseAction == ACTION_ADDTAB:
# self._tab.correct()
# self.gcode.addUndo(self.gcode.addTabUndo(-1,self._tab))
# self._tab = None
# self._tabRect = None
# self.setActionSelect()
# self.event_generate("<<TabAdded>>")
# ----------------------------------------------------------------------
def double(self, event):
#self.app.selectBlocks()
self._mouseAction = ACTION_SELECT_DOUBLE
# ----------------------------------------------------------------------
def motion(self, event):
self.setMouseStatus(event)
#-----------------------------------------------------------------------
# Testing routine
#-----------------------------------------------------------------------
def __test(self, event):
i = self.canvasx(event.x)
j = self.canvasy(event.y)
x,y,z = self.canvas2xyz(i,j)
blocks = self.app.editor.getSelectedBlocks()
from bmath import Vector
P = Vector(x,y)
# for bid in blocks:
# for path in self.gcode.toPath(bid):
# print path
# print path.isInside(P)
# ----------------------------------------------------------------------
# Snap to the closest point if any
# ----------------------------------------------------------------------
def snapPoint(self, cx, cy):
xs,ys = None,None
if CNC.inch:
dmin = (self.zoom/25.4)**2 # 1mm maximum distance ...
else:
dmin = (self.zoom)**2
dmin = (CLOSE_DISTANCE*self.zoom)**2
# ... and if we are closer than 5pixels
for item in self.find_closest(cx, cy, CLOSE_DISTANCE):
try:
bid,lid = self._items[item]
except KeyError:
continue
# Very cheap and inaccurate approach :)
coords = self.coords(item)
x = coords[0] # first
y = coords[1] # point
d = (cx-x)**2 + (cy-y)**2
if d<dmin:
dmin = d
xs,ys = x,y
x = coords[-2] # last
y = coords[-1] # point
d = (cx-x)**2 + (cy-y)**2
if d<dmin:
dmin = d
xs,ys = x,y
# I need to check the real code and if
# an arc check also the center?
if xs is not None:
return xs, ys
else:
return cx, cy
#----------------------------------------------------------------------
# Get margins of selected items
#----------------------------------------------------------------------
def getMargins(self):
bbox = self.bbox("sel")
if not bbox: return None
x1,y1,x2,y2 = bbox
dx = (x2-x1-1)/self.zoom
dy = (y2-y1-1)/self.zoom
return dx,dy
#----------------------------------------------------------------------
def xview(self, *args):
ret = Canvas.xview(self, *args)
if args: self.cameraPosition()
return ret
#----------------------------------------------------------------------
def yview(self, *args):
ret = Canvas.yview(self, *args)
if args: self.cameraPosition()
return ret
#----------------------------------------------------------------------
def configureEvent(self, event):
self.cameraPosition()
# ----------------------------------------------------------------------
def pan(self, event):
if self._mouseAction == ACTION_PAN:
self.scan_dragto(event.x, event.y, gain=1)
self.cameraPosition()
else:
self.config(cursor=mouseCursor(ACTION_PAN))
self.scan_mark(event.x, event.y)
self._mouseAction = ACTION_PAN
# ----------------------------------------------------------------------
def panRelease(self, event):
self._mouseAction = None
self.config(cursor=mouseCursor(self.action))
# ----------------------------------------------------------------------
def panLeft(self, event=None):
self.xview(SCROLL, -1, UNITS)
def panRight(self, event=None):
self.xview(SCROLL, 1, UNITS)
def panUp(self, event=None):
self.yview(SCROLL, -1, UNITS)
def panDown(self, event=None):
self.yview(SCROLL, 1, UNITS)
# ----------------------------------------------------------------------
# Delay zooming to cascade multiple zoom actions
# ----------------------------------------------------------------------
def zoomCanvas(self, x, y, zoom):
self._tx = x
self._ty = y
self.__tzoom *= zoom
self.after_idle(self._zoomCanvas)
# ----------------------------------------------------------------------
# Zoom on screen position x,y by a factor zoom
# ----------------------------------------------------------------------
def _zoomCanvas(self, event=None): #x, y, zoom):
x = self._tx
y = self._ty
zoom = self.__tzoom
#def zoomCanvas(self, x, y, zoom):
self.__tzoom = 1.0
self.zoom *= zoom
x0 = self.canvasx(0)
y0 = self.canvasy(0)
for i in self.find_all():
self.scale(i, 0, 0, zoom, zoom)
# Update last insert
if self._lastGantry:
self._drawGantry(*self.plotCoords([self._lastGantry])[0])
else:
self._drawGantry(0,0)
self._updateScrollBars()
x0 -= self.canvasx(0)
y0 -= self.canvasy(0)
# Perform pin zoom
dx = self.canvasx(x) * (1.0-zoom)
dy = self.canvasy(y) * (1.0-zoom)
# Drag to new location to center viewport
self.scan_mark(0,0)
self.scan_dragto(int(round(dx-x0)), int(round(dy-y0)), 1)
# Resize probe image if any
if self._probe:
self._projectProbeImage()
self.itemconfig(self._probe, image=self._probeTkImage)
self.cameraUpdate()
# ----------------------------------------------------------------------
# Return selected objects bounding box
# ----------------------------------------------------------------------
def selBbox(self):
x1 = None
for tag in ("sel","sel2","sel3","sel4"):
bb = self.bbox(tag)
if bb is None:
continue
elif x1 is None:
x1,y1,x2,y2 = bb
else:
x1 = min(x1,bb[0])
y1 = min(y1,bb[1])
x2 = max(x2,bb[2])
y2 = max(y2,bb[3])
if x1 is None:
return self.bbox('all')
return x1,y1,x2,y2
# ----------------------------------------------------------------------
# Zoom to Fit to Screen
# ----------------------------------------------------------------------
def fit2Screen(self, event=None):
bb = self.selBbox()
if bb is None: return
x1,y1,x2,y2 = bb
try:
zx = float(self.winfo_width()) / (x2-x1)
except:
return
try:
zy = float(self.winfo_height()) / (y2-y1)
except:
return
if zx > 1.0:
self.__tzoom = min(zx,zy)
else:
self.__tzoom = max(zx,zy)
self._tx = self._ty = 0
self._zoomCanvas()
# Find position of new selection
x1,y1,x2,y2 = self.selBbox()
xm = (x1+x2)//2
ym = (y1+y2)//2
sx1,sy1,sx2,sy2 = map(float,self.cget("scrollregion").split())
midx = float(xm-sx1) / (sx2-sx1)
midy = float(ym-sy1) / (sy2-sy1)
a,b = self.xview()
d = (b-a)/2.0
self.xview_moveto(midx-d)
a,b = self.yview()
d = (b-a)/2.0
self.yview_moveto(midy-d)
self.cameraPosition()
# ----------------------------------------------------------------------
def menuZoomIn(self, event=None):
x = int(self.cget("width" ))//2
y = int(self.cget("height"))//2
self.zoomCanvas(x, y, 2.0)
# ----------------------------------------------------------------------
def menuZoomOut(self, event=None):
x = int(self.cget("width" ))//2
y = int(self.cget("height"))//2
self.zoomCanvas(x, y, 0.5)
# ----------------------------------------------------------------------
def mouseZoomIn(self, event):
self.zoomCanvas(event.x, event.y, ZOOM)
# ----------------------------------------------------------------------
def mouseZoomOut(self, event):
self.zoomCanvas(event.x, event.y, 1.0/ZOOM)
# ----------------------------------------------------------------------
def wheel(self, event):
self.zoomCanvas(event.x, event.y, pow(ZOOM,(event.delta//120)))
# ----------------------------------------------------------------------
# Change the insert marker location
# ----------------------------------------------------------------------
def activeMarker(self, item):
if item is None: return
b,i = item
if i is None: return
block = self.gcode[b]
item = block.path(i)
if item is not None and item != self._lastActive:
if self._lastActive is not None:
self.itemconfig(self._lastActive, arrow=NONE)
self._lastActive = item
self.itemconfig(self._lastActive, arrow=LAST)
#----------------------------------------------------------------------
# Display gantry
#----------------------------------------------------------------------
def gantry(self, wx, wy, wz, mx, my, mz):
self._lastGantry = (wx,wy,wz)
self._drawGantry(*self.plotCoords([(wx,wy,wz)])[0])
if self._cameraImage and self.cameraAnchor==NONE:
self.cameraPosition()
dx = wx-mx
dy = wy-my
dz = wz-mz
if abs(dx-self._dx) > 0.0001 or \
abs(dy-self._dy) > 0.0001 or \
abs(dz-self._dz) > 0.0001:
self._dx = dx
self._dy = dy
self._dz = dz
if not self.draw_workarea: return
xmin = self._dx-CNC.travel_x
ymin = self._dy-CNC.travel_y