# *************************************************************************** # * Copyright (c) 2011 Yorik van Havre * # * * # * This program is free software; you can redistribute it and/or modify * # * it under the terms of the GNU Lesser General Public License (LGPL) * # * as published by the Free Software Foundation; either version 2 of * # * the License, or (at your option) any later version. * # * for detail see the LICENCE text file. * # * * # * This program is distributed in the hope that it will be useful, * # * but WITHOUT ANY WARRANTY; without even the implied warranty of * # * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * # * GNU Library General Public License for more details. * # * * # * You should have received a copy of the GNU Library General Public * # * License along with this program; if not, write to the Free Software * # * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * # * USA * # * * # *************************************************************************** """Provides the Snapper class to define the snapping tools and modes. This module provides tools to handle point snapping and everything that goes with it (toolbar buttons, cursor icons, etc.). It also creates the Draft grid, which is actually a tracker defined by `gui_trackers.gridTracker`. """ ## @package gui_snapper # \ingroup draftguitools # \brief Provides the Snapper class to define the snapping tools and modes. # # This module provides tools to handle point snapping and # everything that goes with it (toolbar buttons, cursor icons, etc.). ## \addtogroup draftguitools # @{ import collections as coll import inspect import itertools import math import pivy.coin as coin import PySide.QtCore as QtCore import PySide.QtGui as QtGui import FreeCAD as App import FreeCADGui as Gui import Part import Draft import DraftVecUtils import DraftGeomUtils import draftguitools.gui_trackers as trackers from draftutils.init_tools import get_draft_snap_commands from draftutils.messages import _wrn from draftutils.translate import translate __title__ = "FreeCAD Draft Snap tools" __author__ = "Yorik van Havre" __url__ = "https://www.freecad.org" UNSNAPPABLES = ('Image::ImagePlane',) class Snapper: """Classes to manage snapping in Draft and Arch. The Snapper objects contains all the functionality used by draft and arch module to manage object snapping. It is responsible for finding snap points and displaying snap markers. Usually You only need to invoke it's snap() function, all the rest is taken care of. 3 functions are useful for the scriptwriter: snap(), constrain() or getPoint() which is an all-in-one combo. The individual snapToXXX() functions return a snap definition in the form [real_point,marker_type,visual_point], and are not meant to be used directly, they are all called when necessary by the general snap() function. The Snapper lives inside Gui once the Draft module has been loaded. """ def __init__(self): self.activeview = None self.lastObj = [] self.maxEdges = 0 self.radius = 0 self.constraintAxis = None self.basepoint = None self.affinity = None self.mask = None self.cursorMode = None if Draft.getParam("maxSnap", 0): self.maxEdges = Draft.getParam("maxSnapEdges", 0) self.snapStyle = Draft.getParam("snapStyle", 0) # we still have no 3D view when the draft module initializes self.tracker = None self.extLine = None self.grid = None self.constrainLine = None self.trackLine = None self.extLine2 = None self.radiusTracker = None self.dim1 = None self.dim2 = None self.snapInfo = None self.lastSnappedObject = None self.active = True self.forceGridOff = False self.lastExtensions = [] # the trackers are stored in lists because there can be several views, # each with its own set # view, grid, snap, extline, radius, dim1, dim2, trackLine, # extline2, crosstrackers self.trackers = [[], [], [], [], [], [], [], [], [], []] self.polarAngles = [90, 45] self.selectMode = False self.holdTracker = None self.holdPoints = [] self.running = False self.callbackClick = None self.callbackMove = None self.snapObjectIndex = 0 # snap keys, it's important that they are in this order for # saving in preferences and for properly restoring the toolbar self.snaps = ['Lock', # 0 'Near', # 1 former "passive" snap 'Extension', # 2 'Parallel', # 3 'Grid', # 4 "Endpoint", # 5 'Midpoint', # 6 'Perpendicular', # 7 'Angle', # 8 'Center', # 9 'Ortho', # 10 'Intersection', # 11 'Special', # 12 'Dimensions', # 13 'WorkingPlane' # 14 ] self.init_active_snaps() # the snapmarker has "dot","circle" and "square" available styles if self.snapStyle: self.mk = coll.OrderedDict([('passive', 'empty'), ('extension', 'empty'), ('parallel', 'empty'), ('grid', 'quad'), ('endpoint', 'quad'), ('midpoint', 'quad'), ('perpendicular', 'quad'), ('angle', 'quad'), ('center', 'quad'), ('ortho', 'quad'), ('intersection', 'quad'), ('special', 'quad')]) else: self.mk = coll.OrderedDict([('passive', 'circle'), ('extension', 'circle'), ('parallel', 'circle'), ('grid', 'circle'), ('endpoint', 'dot'), ('midpoint', 'square'), ('perpendicular', 'dot'), ('angle', 'square'), ('center', 'dot'), ('ortho', 'dot'), ('intersection', 'dot'), ('special', 'dot')]) self.cursors = \ coll.OrderedDict([('passive', ':/icons/Draft_Snap_Near.svg'), ('extension', ':/icons/Draft_Snap_Extension.svg'), ('parallel', ':/icons/Draft_Snap_Parallel.svg'), ('grid', ':/icons/Draft_Snap_Grid.svg'), ('endpoint', ':/icons/Draft_Snap_Endpoint.svg'), ('midpoint', ':/icons/Draft_Snap_Midpoint.svg'), ('perpendicular', ':/icons/Draft_Snap_Perpendicular.svg'), ('angle', ':/icons/Draft_Snap_Angle.svg'), ('center', ':/icons/Draft_Snap_Center.svg'), ('ortho', ':/icons/Draft_Snap_Ortho.svg'), ('intersection', ':/icons/Draft_Snap_Intersection.svg'), ('special', ':/icons/Draft_Snap_Special.svg')]) def init_active_snaps(self): """ set self.active_snaps according to user prefs """ self.active_snaps = [] param = App.ParamGet("User parameter:BaseApp/Preferences/Mod/Draft") snap_modes = param.GetString("snapModes", "100000000000000") # default value: only lock is ON i = 0 for snap in snap_modes: if bool(int(snap)): self.active_snaps.append(self.snaps[i]) i += 1 def cstr(self, lastpoint, constrain, point): """Return constraints if needed.""" if constrain or self.mask: fpt = self.constrain(point, lastpoint) else: self.unconstrain() fpt = point if self.radiusTracker: self.radiusTracker.update(fpt) return fpt def snap(self, screenpos, lastpoint=None, active=True, constrain=False, noTracker=False): """Return a snapped point from the given (x, y) screen position. snap(screenpos,lastpoint=None,active=True,constrain=False, noTracker=False): returns a snapped point from the given (x,y) screenpos (the position of the mouse cursor), active is to activate active point snapping or not (passive), lastpoint is an optional other point used to draw an imaginary segment and get additional snap locations. Constrain can be True to constrain the point against the closest working plane axis. Screenpos can be a list, a tuple or a coin.SbVec2s object. If noTracker is True, the tracking line is not displayed. """ if self.running: # do not allow concurrent runs return None self.running = True self.spoint = None if Draft.getParam("showSnapBar", True): toolbar = self.get_snap_toolbar() if toolbar: toolbar.show() self.snapInfo = None # Type conversion if needed if isinstance(screenpos, list): screenpos = tuple(screenpos) elif isinstance(screenpos, coin.SbVec2s): screenpos = tuple(screenpos.getValue()) elif not isinstance(screenpos, tuple): _wrn("Snap needs valid screen position (list, tuple or sbvec2s)") self.running = False return None # Setup trackers if needed self.setTrackers() # Get current snap radius self.radius = self.getScreenDist(Draft.getParam("snapRange", 8), screenpos) if self.radiusTracker: self.radiusTracker.update(self.radius) self.radiusTracker.off() # Activate snap if Draft.getParam("alwaysSnap", True): active = True if not self.active: active = False self.setCursor('passive') if self.tracker: self.tracker.off() if self.extLine2: self.extLine2.off() if self.extLine: self.extLine.off() if self.trackLine: self.trackLine.off() if self.dim1: self.dim1.off() if self.dim2: self.dim2.off() point = self.getApparentPoint(screenpos[0], screenpos[1]) # Set up a track line if we got a last point if lastpoint and self.trackLine: self.trackLine.p1(lastpoint) # Check if parallel to one of the edges of the last objects # or to a polar direction eline = None if active: point, eline = self.snapToPolar(point, lastpoint) point, eline = self.snapToExtensions(point, lastpoint, constrain, eline) # Check if we have an object under the cursor and try to # snap to it _view = Draft.get3DView() objectsUnderCursor = _view.getObjectsInfo((screenpos[0], screenpos[1])) if objectsUnderCursor: if self.snapObjectIndex >= len(objectsUnderCursor): self.snapObjectIndex = 0 self.snapInfo = objectsUnderCursor[self.snapObjectIndex] if self.snapInfo and "Component" in self.snapInfo: osnap = self.snapToObject(lastpoint, active, constrain, eline, point) if osnap: return osnap # Nothing has been snapped. # Check for grid snap and ext crossings if active: epoint = self.snapToCrossExtensions(point) if epoint: point = epoint else: point = self.snapToGrid(point) fp = self.cstr(lastpoint, constrain, point) if self.trackLine and lastpoint and (not noTracker): self.trackLine.p2(fp) self.trackLine.color.rgb = Gui.draftToolBar.getDefaultColor("line") self.trackLine.on() # Set the arch point tracking if lastpoint: self.setArchDims(lastpoint, fp) self.spoint = fp self.running = False return fp def cycleSnapObject(self): """Increase the index of the snap object by one.""" self.snapObjectIndex = self.snapObjectIndex + 1 def snapToObject(self, lastpoint, active, constrain, eline, point): """Snap to an object.""" parent = self.snapInfo.get('ParentObject', None) if parent: subname = self.snapInfo['SubName'] obj = parent.getSubObject(subname, retType=1) else: obj = App.ActiveDocument.getObject(self.snapInfo['Object']) parent = obj subname = self.snapInfo['Component'] if not obj: self.spoint = self.cstr(point) self.running = False return self.spoint snaps = [] self.lastSnappedObject = obj if obj and (Draft.getType(obj) in UNSNAPPABLES): return [] if hasattr(obj.ViewObject, "Selectable"): if not obj.ViewObject.Selectable: self.spoint = self.cstr(lastpoint, constrain, point) self.running = False return self.spoint if not active: # Passive snapping snaps = [self.snapToVertex(self.snapInfo)] else: # Active snapping point = App.Vector(self.snapInfo['x'], self.snapInfo['y'], self.snapInfo['z']) comp = self.snapInfo['Component'] shape = Part.getShape(parent, subname, needSubElement=True, noElementMap=True) if not shape.isNull(): snaps.extend(self.snapToSpecials(obj, lastpoint, eline)) if Draft.getType(obj) == "Polygon": # Special snapping for polygons: add the center snaps.extend(self.snapToPolygon(obj)) elif (Draft.getType(obj) == "BuildingPart" and self.isEnabled("Center")): # snap to the base placement of empty BuildingParts snaps.append([obj.Placement.Base, 'center', self.toWP(obj.Placement.Base)]) if (not self.maxEdges) or (len(shape.Edges) <= self.maxEdges): if "Edge" in comp: # we are snapping to an edge if shape.ShapeType == "Edge": edge = shape snaps.extend(self.snapToNear(edge, point)) snaps.extend(self.snapToEndpoints(edge)) snaps.extend(self.snapToMidpoint(edge)) snaps.extend(self.snapToPerpendicular(edge, lastpoint)) snaps.extend(self.snapToIntersection(edge)) snaps.extend(self.snapToElines(edge, eline)) et = DraftGeomUtils.geomType(edge) if et == "Circle": # the edge is an arc, we have extra options snaps.extend(self.snapToAngles(edge)) snaps.extend(self.snapToCenter(edge)) elif et == "Ellipse": # extra ellipse options snaps.extend(self.snapToCenter(edge)) elif "Face" in comp: # we are snapping to a face if shape.ShapeType == "Face": face = shape snaps.extend(self.snapToNearFace(face, point)) snaps.extend(self.snapToPerpendicularFace(face, lastpoint)) snaps.extend(self.snapToCenterFace(face)) elif "Vertex" in comp: # we are snapping to a vertex if shape.ShapeType == "Vertex": snaps.extend(self.snapToEndpoints(shape)) else: # `Catch-all` for other cases. Probably never executes # as objects with a Shape typically have edges, faces # or vertices. snaps.extend(self.snapToNearUnprojected(point)) elif Draft.getType(obj) == "Dimension": # for dimensions we snap to their 2 points: snaps.extend(self.snapToDim(obj)) elif Draft.getType(obj) == "Axis": for edge in obj.Shape.Edges: snaps.extend(self.snapToEndpoints(edge)) snaps.extend(self.snapToIntersection(edge)) elif Draft.getType(obj).startswith("Mesh::"): snaps.extend(self.snapToNearUnprojected(point)) snaps.extend(self.snapToEndpoints(obj.Mesh)) elif Draft.getType(obj).startswith("Points::"): # for points we only snap to points snaps.extend(self.snapToEndpoints(obj.Points)) elif (Draft.getType(obj) in ("WorkingPlaneProxy", "BuildingPart") and self.isEnabled("Center")): # snap to the center of WPProxies or to the base # placement of no empty BuildingParts snaps.append([obj.Placement.Base, 'center', self.toWP(obj.Placement.Base)]) elif Draft.getType(obj) == "SectionPlane": # snap to corners of section planes snaps.extend(self.snapToEndpoints(obj.Shape)) # updating last objects list if obj.Name in self.lastObj: self.lastObj.remove(obj.Name) self.lastObj.append(obj.Name) if len(self.lastObj) > 8: self.lastObj = self.lastObj[-8:] if not snaps: return None # calculating the nearest snap point shortest = 1000000000000000000 origin = App.Vector(self.snapInfo['x'], self.snapInfo['y'], self.snapInfo['z']) winner = None fp = point for snap in snaps: if (not snap) or (snap[0] is None): pass # print("debug: Snapper: invalid snap point: ",snaps) else: delta = snap[0].sub(origin) if delta.Length < shortest: shortest = delta.Length winner = snap if winner: # setting the cursors if self.tracker and not self.selectMode: self.tracker.setCoords(winner[2]) self.tracker.setMarker(self.mk[winner[1]]) self.tracker.on() # setting the trackline fp = self.cstr(lastpoint, constrain, winner[2]) if self.trackLine and lastpoint: self.trackLine.p2(fp) self.trackLine.color.rgb = Gui.draftToolBar.getDefaultColor("line") self.trackLine.on() # set the cursor self.setCursor(winner[1]) # set the arch point tracking if lastpoint: self.setArchDims(lastpoint, fp) # return the final point self.spoint = fp self.running = False return self.spoint def toWP(self, point): """Project the given point on the working plane, if needed.""" if self.isEnabled("WorkingPlane"): if hasattr(App, "DraftWorkingPlane"): return App.DraftWorkingPlane.projectPoint(point) return point def getApparentPoint(self, x, y): """Return a 3D point, projected on the current working plane.""" view = Draft.get3DView() pt = view.getPoint(x, y) if self.mask != "z": if hasattr(App,"DraftWorkingPlane"): if view.getCameraType() == "Perspective": camera = view.getCameraNode() p = camera.getField("position").getValue() dv = pt.sub(App.Vector(p[0], p[1], p[2])) else: dv = view.getViewDirection() return App.DraftWorkingPlane.projectPoint(pt, dv) return pt def snapToDim(self, obj): snaps = [] if obj.ViewObject: if hasattr(obj.ViewObject.Proxy, "p2") and hasattr(obj.ViewObject.Proxy, "p3"): snaps.append([obj.ViewObject.Proxy.p2, 'endpoint', self.toWP(obj.ViewObject.Proxy.p2)]) snaps.append([obj.ViewObject.Proxy.p3, 'endpoint', self.toWP(obj.ViewObject.Proxy.p3)]) return snaps def snapToExtensions(self, point, last, constrain, eline): """Return a point snapped to extension or parallel line. The parallel line of the last object, if any. """ tsnap = self.snapToHold(point) if tsnap: if self.tracker and not self.selectMode: self.tracker.setCoords(tsnap[2]) self.tracker.setMarker(self.mk[tsnap[1]]) self.tracker.on() if self.extLine: self.extLine.p1(tsnap[0]) self.extLine.p2(tsnap[2]) self.extLine.color.rgb = Gui.draftToolBar.getDefaultColor("line") self.extLine.on() self.setCursor(tsnap[1]) return tsnap[2], eline if self.isEnabled("Extension"): tsnap = self.snapToExtOrtho(last, constrain, eline) if tsnap: if (tsnap[0].sub(point)).Length < self.radius: if self.tracker and not self.selectMode: self.tracker.setCoords(tsnap[2]) self.tracker.setMarker(self.mk[tsnap[1]]) self.tracker.on() if self.extLine: self.extLine.p2(tsnap[2]) self.extLine.color.rgb = Gui.draftToolBar.getDefaultColor("line") self.extLine.on() self.setCursor(tsnap[1]) return tsnap[2], eline else: tsnap = self.snapToExtPerpendicular(last) if tsnap: if (tsnap[0].sub(point)).Length < self.radius: if self.tracker and not self.selectMode: self.tracker.setCoords(tsnap[2]) self.tracker.setMarker(self.mk[tsnap[1]]) self.tracker.on() if self.extLine: self.extLine.p2(tsnap[2]) self.extLine.color.rgb = Gui.draftToolBar.getDefaultColor("line") self.extLine.on() self.setCursor(tsnap[1]) return tsnap[2], eline for o in self.lastObj: if (self.isEnabled('Extension') or self.isEnabled('Parallel')): ob = App.ActiveDocument.getObject(o) if not ob: continue if not ob.isDerivedFrom("Part::Feature"): continue edges = ob.Shape.Edges if Draft.getType(ob) == "Wall": for so in [ob]+ob.Additions: if Draft.getType(so) == "Wall": if so.Base: edges.extend(so.Base.Shape.Edges) edges.reverse() if (not self.maxEdges) or (len(edges) <= self.maxEdges): for e in edges: if DraftGeomUtils.geomType(e) != "Line": continue np = self.getPerpendicular(e,point) if (np.sub(point)).Length < self.radius: if self.isEnabled('Extension'): if DraftGeomUtils.isPtOnEdge(np,e): continue if np != e.Vertexes[0].Point: p0 = e.Vertexes[0].Point if self.tracker and not self.selectMode: self.tracker.setCoords(np) self.tracker.setMarker(self.mk['extension']) self.tracker.on() if self.extLine: if self.snapStyle: dv = np.sub(p0) self.extLine.p1(p0.add(dv.multiply(0.5))) else: self.extLine.p1(p0) self.extLine.p2(np) self.extLine.color.rgb = Gui.draftToolBar.getDefaultColor("line") self.extLine.on() self.setCursor('extension') ne = Part.LineSegment(p0,np).toShape() # storing extension line for intersection calculations later if len(self.lastExtensions) == 0: self.lastExtensions.append(ne) elif len(self.lastExtensions) == 1: if not DraftGeomUtils.areColinear(ne,self.lastExtensions[0]): self.lastExtensions.append(self.lastExtensions[0]) self.lastExtensions[0] = ne else: if (not DraftGeomUtils.areColinear(ne,self.lastExtensions[0])) and \ (not DraftGeomUtils.areColinear(ne,self.lastExtensions[1])): self.lastExtensions[1] = self.lastExtensions[0] self.lastExtensions[0] = ne return np,ne elif self.isEnabled('Parallel'): if last: ve = DraftGeomUtils.vec(e) if not DraftVecUtils.isNull(ve): de = Part.LineSegment(last,last.add(ve)).toShape() np = self.getPerpendicular(de,point) if (np.sub(point)).Length < self.radius: if self.tracker and not self.selectMode: self.tracker.setCoords(np) self.tracker.setMarker(self.mk['parallel']) self.tracker.on() self.setCursor('parallel') return np,de return point,eline def snapToCrossExtensions(self, point): """Snap to the intersection of the last 2 extension lines.""" if self.isEnabled('Extension'): if len(self.lastExtensions) == 2: np = DraftGeomUtils.findIntersection(self.lastExtensions[0], self.lastExtensions[1], True, True) if np: for p in np: dv = point.sub(p) if (self.radius == 0) or (dv.Length <= self.radius): if self.tracker and not self.selectMode: self.tracker.setCoords(p) self.tracker.setMarker(self.mk['intersection']) self.tracker.on() self.setCursor('intersection') if self.extLine and self.extLine2: if DraftVecUtils.equals(self.extLine.p1(), self.lastExtensions[0].Vertexes[0].Point): p0 = self.lastExtensions[1].Vertexes[0].Point else: p0 = self.lastExtensions[0].Vertexes[0].Point if self.snapStyle: dv = p.sub(p0) self.extLine2.p1(p0.add(dv.multiply(0.5))) else: self.extLine2.p1(p0) self.extLine2.p2(p) self.extLine.p2(p) self.extLine.color.rgb = Gui.draftToolBar.getDefaultColor("line") self.extLine2.on() return p return None def snapToPolar(self,point,last): """Snap to polar lines from the given point.""" if self.isEnabled('Ortho') and (not self.mask): if last: vecs = [] if hasattr(App,"DraftWorkingPlane"): ax = [App.DraftWorkingPlane.u, App.DraftWorkingPlane.v, App.DraftWorkingPlane.axis] else: ax = [App.Vector(1, 0, 0), App.Vector(0, 1, 0), App.Vector(0, 0, 1)] for a in self.polarAngles: if a == 90: vecs.extend([ax[0], ax[0].negative()]) vecs.extend([ax[1], ax[1].negative()]) else: v = DraftVecUtils.rotate(ax[0], math.radians(a), ax[2]) vecs.extend([v, v.negative()]) v = DraftVecUtils.rotate(ax[1], math.radians(a), ax[2]) vecs.extend([v, v.negative()]) for v in vecs: if not DraftVecUtils.isNull(v): try: de = Part.LineSegment(last, last.add(v)).toShape() except Part.OCCError: return point, None np = self.getPerpendicular(de, point) if ((self.radius == 0) and (point.sub(last).getAngle(v) < 0.087)) \ or ((np.sub(point)).Length < self.radius): if self.tracker and not self.selectMode: self.tracker.setCoords(np) self.tracker.setMarker(self.mk['parallel']) self.tracker.on() self.setCursor('ortho') return np,de return point, None def snapToGrid(self, point): """Return a grid snap point if available.""" if self.grid: if self.grid.Visible: if self.isEnabled("Grid"): np = self.grid.getClosestNode(point) if np: dv = point.sub(np) if (self.radius == 0) or (dv.Length <= self.radius): if self.tracker and not self.selectMode: self.tracker.setCoords(np) self.tracker.setMarker(self.mk['grid']) self.tracker.on() self.setCursor('grid') return np return point def snapToEndpoints(self, shape): """Return a list of endpoints snap locations.""" snaps = [] if self.isEnabled("Endpoint"): if hasattr(shape, "Vertexes"): for v in shape.Vertexes: snaps.append([v.Point, 'endpoint', self.toWP(v.Point)]) elif hasattr(shape, "Point"): snaps.append([shape.Point, 'endpoint', self.toWP(shape.Point)]) elif hasattr(shape, "Points"): if len(shape.Points) and hasattr(shape.Points[0], "Vector"): for v in shape.Points: snaps.append([v.Vector, 'endpoint', self.toWP(v.Vector)]) else: for v in shape.Points: snaps.append([v, 'endpoint', self.toWP(v)]) return snaps def snapToMidpoint(self, shape): """Return a list of midpoints snap locations.""" snaps = [] if self.isEnabled("Midpoint"): if isinstance(shape, Part.Edge): mp = DraftGeomUtils.findMidpoint(shape) if mp: snaps.append([mp, 'midpoint', self.toWP(mp)]) return snaps def snapToNear(self, shape, point): """Return a list with a near snap location for an edge.""" if self.isEnabled("Near") and point: try: np = shape.Curve.projectPoint(point, "NearestPoint") except Exception: return [] return [[np, "passive", self.toWP(np)]] else: return [] def snapToNearFace(self, shape, point): """Return a list with a near snap location for a face.""" if self.isEnabled("Near") and point: try: np = shape.Surface.projectPoint(point, "NearestPoint") except Exception: return [] return [[np, "passive", self.toWP(np)]] else: return [] def snapToNearUnprojected(self, point): """Return a list with a near snap location that is not projected on the object.""" if self.isEnabled("Near") and point: return [[point, "passive", self.toWP(point)]] else: return [] def snapToPerpendicular(self, shape, last): """Return a list of perpendicular snap locations for an edge.""" if self.isEnabled("Perpendicular") and last: curv = shape.Curve try: prs = curv.projectPoint(last, "Parameter") except Exception: return [] snaps = [] for pr in prs: np = curv.value(pr) snaps.append([np, "perpendicular", self.toWP(np)]) return snaps else: return [] def snapToPerpendicularFace(self, shape, last): """Return a list of perpendicular snap locations for a face.""" if self.isEnabled("Perpendicular") and last: surf = shape.Surface try: prs = surf.projectPoint(last, "Parameters") except Exception: return [] snaps = [] for pr in prs: np = surf.value(pr[0], pr[1]) snaps.append([np, "perpendicular", self.toWP(np)]) return snaps else: return [] def snapToOrtho(self, shape, last, constrain): """Return a list of ortho snap locations.""" snaps = [] if self.isEnabled("Ortho"): if constrain: if isinstance(shape, Part.Edge): if last: if DraftGeomUtils.geomType(shape) == "Line": if self.constraintAxis: tmpEdge = Part.LineSegment(last, last.add(self.constraintAxis)).toShape() # get the intersection points pt = DraftGeomUtils.findIntersection(tmpEdge, shape, True, True) if pt: for p in pt: snaps.append([p, 'ortho', self.toWP(p)]) return snaps def snapToExtOrtho(self, last, constrain, eline): """Return an ortho X extension snap location.""" if self.isEnabled("Extension") and self.isEnabled("Ortho"): if constrain and last and self.constraintAxis and self.extLine: tmpEdge1 = Part.LineSegment(last, last.add(self.constraintAxis)).toShape() tmpEdge2 = Part.LineSegment(self.extLine.p1(), self.extLine.p2()).toShape() # get the intersection points pt = DraftGeomUtils.findIntersection(tmpEdge1, tmpEdge2, True, True) if pt: return [pt[0], 'ortho', pt[0]] if eline: try: tmpEdge2 = Part.LineSegment(self.extLine.p1(), self.extLine.p2()).toShape() # get the intersection points pt = DraftGeomUtils.findIntersection(eline, tmpEdge2, True, True) if pt: return [pt[0], 'ortho', pt[0]] except Exception: return None return None def snapToHold(self, point): """Return a snap location that is orthogonal to hold points. Or if possible at crossings. """ if not self.holdPoints: return None if hasattr(App, "DraftWorkingPlane"): u = App.DraftWorkingPlane.u v = App.DraftWorkingPlane.v else: u = App.Vector(1, 0, 0) v = App.Vector(0, 1, 0) if len(self.holdPoints) > 1: # first try mid points if self.isEnabled("Midpoint"): l = list(self.holdPoints) for p1, p2 in itertools.combinations(l, 2): p3 = p1.add((p2.sub(p1)).multiply(0.5)) if (p3.sub(point)).Length < self.radius: return [p1, 'midpoint', p3] # then try int points ipoints = [] l = list(self.holdPoints) while len(l) > 1: p1 = l.pop() for p2 in l: i1 = DraftGeomUtils.findIntersection(p1, p1.add(u), p2, p2.add(v), True, True) if i1: ipoints.append([p1, i1[0]]) i2 = DraftGeomUtils.findIntersection(p1, p1.add(v), p2, p2.add(u), True, True) if i2: ipoints.append([p1, i2[0]]) for p in ipoints: if (p[1].sub(point)).Length < self.radius: return [p[0], 'ortho', p[1]] # then try to stick to a line for p in self.holdPoints: d = DraftGeomUtils.findDistance(point, [p, p.add(u)]) if d: if d.Length < self.radius: fp = point.add(d) return [p, 'extension', fp] d = DraftGeomUtils.findDistance(point, [p, p.add(v)]) if d: if d.Length < self.radius: fp = point.add(d) return [p, 'extension', fp] return None def snapToExtPerpendicular(self, last): """Return a perpendicular X extension snap location.""" if self.isEnabled("Extension") and self.isEnabled("Perpendicular"): if last and self.extLine: if self.extLine.p1() != self.extLine.p2(): tmpEdge = Part.LineSegment(self.extLine.p1(), self.extLine.p2()).toShape() np = self.getPerpendicular(tmpEdge, last) return [np, 'perpendicular', np] return None def snapToElines(self, e1, e2): """Return a snap at the infinite intersection of the given edges.""" snaps = [] if self.isEnabled("Intersection") and self.isEnabled("Extension"): if e1 and e2: # get the intersection points pts = DraftGeomUtils.findIntersection(e1, e2, True, True) if pts: for p in pts: snaps.append([p, 'intersection', self.toWP(p)]) return snaps def snapToAngles(self, shape): """Return a list of angle snap locations.""" snaps = [] if self.isEnabled("Angle"): place = App.Placement() place.Base = shape.Curve.Center place.Rotation = App.Rotation(App.Vector(1, 0, 0), App.Vector(0, 1, 0), shape.Curve.Axis, 'ZXY') rad = shape.Curve.Radius for deg in (0, 30, 45, 60, 90, 120, 135, 150, 180, 210, 225, 240, 270, 300, 315, 330): ang = math.radians(deg) cur = App.Vector(math.sin(ang) * rad, math.cos(ang) * rad, 0) cur = place.multVec(cur) snaps.append([cur, 'angle', self.toWP(cur)]) return snaps def snapToCenter(self, shape): """Return a list of center snap locations.""" snaps = [] if self.isEnabled("Center"): cen = shape.Curve.Center cen_wp = self.toWP(cen) if hasattr(shape.Curve, "Radius"): place = App.Placement() place.Base = cen place.Rotation = App.Rotation(App.Vector(1, 0, 0), App.Vector(0, 1, 0), shape.Curve.Axis, 'ZXY') rad = shape.Curve.Radius for deg in (15, 37.5, 52.5, 75, 105, 127.5, 142.5, 165, 195, 217.5, 232.5, 255, 285, 307.5, 322.5, 345): ang = math.radians(deg) cur = App.Vector(math.sin(ang) * rad, math.cos(ang) * rad, 0) cur = place.multVec(cur) snaps.append([cur, 'center', cen_wp]) else: snaps.append([cen, 'center', cen_wp]) return snaps def snapToCenterFace(self, shape): """Return a face center snap location.""" snaps = [] if self.isEnabled("Center"): pos = shape.CenterOfMass c = self.toWP(pos) snaps.append([pos, 'center', c]) return snaps def snapToIntersection(self, shape): """Return a list of intersection snap locations.""" snaps = [] if self.isEnabled("Intersection"): # get the stored objects to calculate intersections for o in self.lastObj: obj = App.ActiveDocument.getObject(o) if obj: if obj.isDerivedFrom("Part::Feature") or (Draft.getType(obj) == "Axis"): if (not self.maxEdges) or (len(obj.Shape.Edges) <= self.maxEdges): for e in obj.Shape.Edges: # get the intersection points try: if self.isEnabled("WorkingPlane") and hasattr(e,"Curve") and isinstance(e.Curve,(Part.Line,Part.LineSegment)) and hasattr(shape,"Curve") and isinstance(shape.Curve,(Part.Line,Part.LineSegment)): # get apparent intersection (lines projected on WP) p1 = self.toWP(e.Vertexes[0].Point) p2 = self.toWP(e.Vertexes[-1].Point) p3 = self.toWP(shape.Vertexes[0].Point) p4 = self.toWP(shape.Vertexes[-1].Point) pt = DraftGeomUtils.findIntersection(p1, p2, p3, p4, True, True) else: pt = DraftGeomUtils.findIntersection(e, shape) if pt: for p in pt: snaps.append([p, 'intersection', self.toWP(p)]) except Exception: pass # some curve types yield an error # when trying to read their types return snaps def snapToPolygon(self, obj): """Return a list of polygon center snap locations.""" snaps = [] if self.isEnabled("Center"): c = obj.Placement.Base for edge in obj.Shape.Edges: p1 = edge.Vertexes[0].Point p2 = edge.Vertexes[-1].Point v1 = p1.add((p2 - p1).scale(0.25, 0.25, 0.25)) v2 = p1.add((p2 - p1).scale(0.75, 0.75, 0.75)) snaps.append([v1, 'center', self.toWP(c)]) snaps.append([v2, 'center', self.toWP(c)]) return snaps def snapToVertex(self, info, active=False): p = App.Vector(info['x'], info['y'], info['z']) if active: if self.isEnabled("Near"): return [p, 'endpoint', self.toWP(p)] else: return [] elif self.isEnabled("Near"): return [p, 'passive', p] else: return [] def snapToSpecials(self, obj, lastpoint=None, eline=None): """Return special snap locations, if any.""" snaps = [] if self.isEnabled("Special"): if (Draft.getType(obj) == "Wall"): # special snapping for wall: snap to its base shape if it is linear if obj.Base: if not obj.Base.Shape.Solids: for v in obj.Base.Shape.Vertexes: snaps.append([v.Point, 'special', self.toWP(v.Point)]) elif (Draft.getType(obj) == "Structure"): # special snapping for struct: only to its base point if obj.Base: if not obj.Base.Shape.Solids: for v in obj.Base.Shape.Vertexes: snaps.append([v.Point, 'special', self.toWP(v.Point)]) else: b = obj.Placement.Base snaps.append([b, 'special', self.toWP(b)]) if obj.ViewObject.ShowNodes: for edge in obj.Proxy.getNodeEdges(obj): snaps.extend(self.snapToEndpoints(edge)) snaps.extend(self.snapToMidpoint(edge)) snaps.extend(self.snapToPerpendicular(edge, lastpoint)) snaps.extend(self.snapToIntersection(edge)) snaps.extend(self.snapToElines(edge, eline)) elif hasattr(obj, "SnapPoints"): for p in obj.SnapPoints: p2 = obj.Placement.multVec(p) snaps.append([p2, 'special', p2]) return snaps def getScreenDist(self, dist, cursor): """Return a distance in 3D space from a screen pixels distance.""" view = Draft.get3DView() p1 = view.getPoint(cursor) p2 = view.getPoint((cursor[0] + dist, cursor[1])) return (p2.sub(p1)).Length def getPerpendicular(self, edge, pt): """Return a point on an edge, perpendicular to the given point.""" dv = pt.sub(edge.Vertexes[0].Point) nv = DraftVecUtils.project(dv, DraftGeomUtils.vec(edge)) np = (edge.Vertexes[0].Point).add(nv) return np def setArchDims(self, p1, p2): """Show arc dimensions between 2 points.""" if self.isEnabled("Dimensions"): if not self.dim1: self.dim1 = trackers.archDimTracker(mode=2) if not self.dim2: self.dim2 = trackers.archDimTracker(mode=3) self.dim1.p1(p1) self.dim2.p1(p1) self.dim1.p2(p2) self.dim2.p2(p2) if self.dim1.Distance: self.dim1.on() if self.dim2.Distance: self.dim2.on() def get_cursor_size(self): # TODO Unfortunately, there's no way to get the cursor size in Qt # Either provide platform-specific implementation or make it a user preference # This should be in device-independent pixels return 32 def get_quarter_widget(self, mw): views = [] for w in mw.findChild(QtGui.QMdiArea).findChildren(QtGui.QWidget): if w.inherits("SIM::Coin3D::Quarter::QuarterWidget"): views.append(w) return views def device_pixel_ratio(self): device_pixel_ratio = 1 for w in self.get_quarter_widget(Gui.getMainWindow()): if int(QtCore.qVersion().split('.')[0]) > 4: device_pixel_ratio = w.devicePixelRatio() return device_pixel_ratio def get_cursor_with_tail(self, base_icon_name, tail_icon_name=None): base_icon = QtGui.QPixmap(base_icon_name) device_pixel_ratio = self.device_pixel_ratio() full_icon_size = self.get_cursor_size() new_icon_width = full_icon_size * device_pixel_ratio new_icon_height = 0.75 * full_icon_size * device_pixel_ratio new_icon = QtGui.QPixmap(new_icon_width, new_icon_height) new_icon.fill(QtCore.Qt.transparent) qp = QtGui.QPainter() qp.begin(new_icon) base_icon = base_icon.scaledToWidth(0.5 * full_icon_size * device_pixel_ratio) qp.drawPixmap(0, 0, base_icon) if tail_icon_name: tail_icon_width = 0.5 * full_icon_size * device_pixel_ratio tail_icon_x = 0.5 * full_icon_size * device_pixel_ratio tail_icon_y = 0.25 * full_icon_size * device_pixel_ratio tail_pixmap = QtGui.QPixmap(tail_icon_name).scaledToWidth(tail_icon_width) qp.drawPixmap(QtCore.QPoint(tail_icon_x, tail_icon_y), tail_pixmap) qp.end() cur_hot_x = 0.25 * full_icon_size * device_pixel_ratio cur_hot_y = 0.25 * full_icon_size * device_pixel_ratio if int(QtCore.qVersion().split('.')[0]) > 4: new_icon.setDevicePixelRatio(device_pixel_ratio) cur = QtGui.QCursor(new_icon, cur_hot_x, cur_hot_y) return cur def setCursor(self, mode=None): """Set or reset the cursor to the given mode or resets.""" if self.selectMode: for w in self.get_quarter_widget(Gui.getMainWindow()): w.unsetCursor() self.cursorMode = None elif not mode: for w in self.get_quarter_widget(Gui.getMainWindow()): w.unsetCursor() self.cursorMode = None else: if mode != self.cursorMode: base_icon_name = ":/icons/Draft_Cursor.svg" tail_icon_name = None if not (mode == 'passive'): tail_icon_name = self.cursors[mode] cur = self.get_cursor_with_tail(base_icon_name, tail_icon_name) for w in self.get_quarter_widget(Gui.getMainWindow()): w.setCursor(cur) self.cursorMode = mode def restack(self): """Lower the grid tracker so it doesn't obscure other objects.""" if self.grid: self.grid.lowerTracker() def off(self, hideSnapBar=False): """Finish snapping.""" if self.tracker: self.tracker.off() if self.trackLine: self.trackLine.off() if self.extLine: self.extLine.off() if self.extLine2: self.extLine2.off() if self.radiusTracker: self.radiusTracker.off() if self.dim1: self.dim1.off() if self.dim2: self.dim2.off() if self.grid: if not Draft.getParam("alwaysShowGrid", True): self.grid.off() if self.holdTracker: self.holdTracker.clear() self.holdTracker.off() self.unconstrain() self.radius = 0 self.setCursor() if hideSnapBar or Draft.getParam("hideSnapBar", False): toolbar = self.get_snap_toolbar() if toolbar: toolbar.hide() self.mask = None self.selectMode = False self.running = False self.holdPoints = [] self.lastObj = [] def setSelectMode(self, mode): """Set the snapper into select mode (hides snapping temporarily).""" self.selectMode = mode if not mode: self.setCursor() else: if self.trackLine: self.trackLine.off() def setAngle(self, delta=None): """Keep the current angle.""" if delta: self.mask = delta elif isinstance(self.mask, App.Vector): self.mask = None elif self.trackLine: if self.trackLine.Visible: self.mask = self.trackLine.p2().sub(self.trackLine.p1()) def constrain(self, point, basepoint=None, axis=None): """Return a constrained point. constrain(point,basepoint=None,axis=None: Returns a constrained point. Axis can be "x","y" or "z" or a custom vector. If None, the closest working plane axis will be picked. Basepoint is the base point used to figure out from where the point must be constrained. If no basepoint is given, the current point is used as basepoint. """ # without the Draft module fully loaded, no axes system!" if not hasattr(App, "DraftWorkingPlane"): return point point = App.Vector(point) # setup trackers if needed if not self.constrainLine: if self.snapStyle: self.constrainLine = trackers.lineTracker(scolor=Gui.draftToolBar.getDefaultColor("snap")) else: self.constrainLine = trackers.lineTracker(dotted=True) # setting basepoint if not basepoint: if not self.basepoint: self.basepoint = point else: self.basepoint = basepoint delta = point.sub(self.basepoint) # setting constraint axis if self.mask: self.affinity = self.mask if not self.affinity: self.affinity = App.DraftWorkingPlane.getClosestAxis(delta) if isinstance(axis, App.Vector): self.constraintAxis = axis elif axis == "x": self.constraintAxis = App.DraftWorkingPlane.u elif axis == "y": self.constraintAxis = App.DraftWorkingPlane.v elif axis == "z": self.constraintAxis = App.DraftWorkingPlane.axis else: if self.affinity == "x": self.constraintAxis = App.DraftWorkingPlane.u elif self.affinity == "y": self.constraintAxis = App.DraftWorkingPlane.v elif self.affinity == "z": self.constraintAxis = App.DraftWorkingPlane.axis elif isinstance(self.affinity, App.Vector): self.constraintAxis = self.affinity else: self.constraintAxis = None if not self.constraintAxis: return point # calculating constrained point cdelta = DraftVecUtils.project(delta, self.constraintAxis) npoint = self.basepoint.add(cdelta) # setting constrain line if self.constrainLine: if point != npoint: self.constrainLine.p1(point) self.constrainLine.p2(npoint) self.constrainLine.on() else: self.constrainLine.off() return npoint def unconstrain(self): """Unset the basepoint and the constrain line.""" self.basepoint = None self.affinity = None if self.constrainLine: self.constrainLine.off() def getPoint(self, last=None, callback=None, movecallback=None, extradlg=None, title=None, mode="point"): """Get a 3D point from the screen. getPoint([last],[callback],[movecallback],[extradlg],[title]): gets a 3D point from the screen. You can provide an existing point, in that case additional snap options and a tracker are available. You can also pass a function as callback, which will get called with the resulting point as argument, when a point is clicked, and optionally another callback which gets called when the mouse is moved. If the operation gets cancelled (the user pressed Escape), no point is returned. Example: def cb(point): if point: print "got a 3D point: ",point Gui.Snapper.getPoint(callback=cb) If the callback function accepts more than one argument, it will also receive the last snapped object. Finally, a qt widget can be passed as an extra taskbox. title is the title of the point task box mode is the dialog box you want (default is point, you can also use wire and line) If getPoint() is invoked without any argument, nothing is done but the callbacks are removed, so it can be used as a cancel function. """ self.pt = None self.lastSnappedObject = None self.holdPoints = [] self.ui = Gui.draftToolBar self.view = Draft.get3DView() # remove any previous leftover callbacks if self.callbackClick: self.view.removeEventCallbackPivy(coin.SoMouseButtonEvent.getClassTypeId(), self.callbackClick) if self.callbackMove: self.view.removeEventCallbackPivy(coin.SoLocation2Event.getClassTypeId(), self.callbackMove) self.callbackClick = None self.callbackMove = None def move(event_cb): event = event_cb.getEvent() mousepos = event.getPosition() ctrl = event.wasCtrlDown() shift = event.wasShiftDown() self.pt = Gui.Snapper.snap(mousepos, lastpoint=last, active=ctrl, constrain=shift) if hasattr(App, "DraftWorkingPlane"): self.ui.displayPoint(self.pt, last, plane=App.DraftWorkingPlane, mask=Gui.Snapper.affinity) if movecallback: movecallback(self.pt, self.snapInfo) def getcoords(point, global_mode=True, relative_mode=False): """Get the global coordinates from a point.""" # Same algorithm as in validatePoint in DraftGui.py. ref = App.Vector(0, 0, 0) if global_mode is False and hasattr(App, "DraftWorkingPlane"): point = App.DraftWorkingPlane.getGlobalRot(point) ref = App.DraftWorkingPlane.getGlobalCoords(ref) if relative_mode is True and last is not None: ref = last self.pt = point + ref accept() def click(event_cb): event = event_cb.getEvent() if event.getButton() == 1: if event.getState() == coin.SoMouseButtonEvent.DOWN: accept() def accept(): if self.callbackClick: self.view.removeEventCallbackPivy(coin.SoMouseButtonEvent.getClassTypeId(), self.callbackClick) if self.callbackMove: self.view.removeEventCallbackPivy(coin.SoLocation2Event.getClassTypeId(), self.callbackMove) self.callbackClick = None self.callbackMove = None Gui.Snapper.off() self.ui.offUi() if callback: if len(inspect.getfullargspec(callback).args) > 1: obj = None if self.snapInfo and ("Object" in self.snapInfo) and self.snapInfo["Object"]: obj = App.ActiveDocument.getObject(self.snapInfo["Object"]) callback(self.pt, obj) else: callback(self.pt) self.pt = None def cancel(): if self.callbackClick: self.view.removeEventCallbackPivy(coin.SoMouseButtonEvent.getClassTypeId(), self.callbackClick) if self.callbackMove: self.view.removeEventCallbackPivy(coin.SoLocation2Event.getClassTypeId(), self.callbackMove) self.callbackClick = None self.callbackMove = None Gui.Snapper.off() self.ui.offUi() if callback: if len(inspect.getfullargspec(callback).args) > 1: callback(None, None) else: callback(None) # adding callback functions if mode == "line": interface = self.ui.lineUi elif mode == "wire": interface = self.ui.wireUi else: interface = self.ui.pointUi if callback: if title: interface(title=title, cancel=cancel, getcoords=getcoords, extra=extradlg, rel=bool(last)) else: interface(cancel=cancel,getcoords=getcoords,extra=extradlg,rel=bool(last)) self.callbackClick = self.view.addEventCallbackPivy(coin.SoMouseButtonEvent.getClassTypeId(),click) self.callbackMove = self.view.addEventCallbackPivy(coin.SoLocation2Event.getClassTypeId(),move) def get_snap_toolbar(self): """Get the snap toolbar.""" if not (hasattr(self, "toolbar") and self.toolbar): mw = Gui.getMainWindow() self.toolbar = mw.findChild(QtGui.QToolBar, "Draft snap") if self.toolbar: # Make sure the Python generated BIM snap toolbar shows up in the # toolbar area context menu after switching back to that workbench: self.toolbar.toggleViewAction().setVisible(True) return self.toolbar # Code required for the BIM workbench which has to work with FC0.20 # and FC0.21/1.0. The code relies on the Snapping menu in the BIM WB # to create the actions. self.toolbar = QtGui.QToolBar(mw) mw.addToolBar(QtCore.Qt.TopToolBarArea, self.toolbar) self.toolbar.setObjectName("Draft snap") self.toolbar.setWindowTitle(translate("Workbench", "Draft snap")) for cmd in get_draft_snap_commands(): if cmd == "Separator": self.toolbar.addSeparator() else: action = Gui.Command.get(cmd).getAction()[0] self.toolbar.addAction(action) return self.toolbar def toggleGrid(self): """Toggle FreeCAD Draft Grid.""" Gui.runCommand("Draft_ToggleGrid") def showradius(self): """Show the snap radius indicator.""" self.radius = self.getScreenDist(Draft.getParam("snapRange", 8), (400, 300)) if self.radiusTracker: self.radiusTracker.update(self.radius) self.radiusTracker.on() def isEnabled(self, snap): """Returns true if the given snap is on""" if "Lock" in self.active_snaps and snap in self.active_snaps: return True else: return False def toggle_snap(self, snap, set_to = None): """Sets the given snap on/off according to the given parameter""" if set_to: # set mode if set_to is True: if not snap in self.active_snaps: self.active_snaps.append(snap) status = True elif set_to is False: if snap in self.active_snaps: self.active_snaps.remove(snap) status = False else: # toggle mode, default if not snap in self.active_snaps: self.active_snaps.append(snap) status = True elif snap in self.active_snaps: self.active_snaps.remove(snap) status = False self.save_snap_state() return status def save_snap_state(self): """ Save snap state to user preferences to be restored in next session. """ param = App.ParamGet("User parameter:BaseApp/Preferences/Mod/Draft") snap_modes = "" for snap in self.snaps: if snap in self.active_snaps: snap_modes += "1" else: snap_modes += "0" param.SetString("snapModes",snap_modes) def show(self): """Show the toolbar and the grid.""" toolbar = self.get_snap_toolbar() if toolbar: if Draft.getParam("showSnapBar", True): toolbar.show() else: toolbar.hide() if Gui.ActiveDocument: self.setTrackers() if not App.ActiveDocument.Objects: if Gui.ActiveDocument.ActiveView: if Gui.ActiveDocument.ActiveView.getCameraType() == 'Orthographic': c = Gui.ActiveDocument.ActiveView.getCameraNode() if c.orientation.getValue().getValue() == (0.0, 0.0, 0.0, 1.0): p = App.ParamGet("User parameter:BaseApp/Preferences/Mod/Draft") h = p.GetInt("defaultCameraHeight",0) if h: c.height.setValue(h) def hide(self): """Hide the toolbar.""" if hasattr(self, "toolbar") and self.toolbar: self.toolbar.hide() self.toolbar.toggleViewAction().setVisible(False) def setGrid(self, tool=False): """Set the grid, if visible.""" self.setTrackers() if self.grid and (not self.forceGridOff): if self.grid.Visible: self.grid.set(tool) def setTrackers(self, tool=False): """Set the trackers.""" v = Draft.get3DView() if v and (v != self.activeview): if v in self.trackers[0]: i = self.trackers[0].index(v) self.grid = self.trackers[1][i] self.tracker = self.trackers[2][i] self.extLine = self.trackers[3][i] self.radiusTracker = self.trackers[4][i] self.dim1 = self.trackers[5][i] self.dim2 = self.trackers[6][i] self.trackLine = self.trackers[7][i] self.extLine2 = self.trackers[8][i] self.holdTracker = self.trackers[9][i] else: if Draft.getParam("grid", True): self.grid = trackers.gridTracker() if Draft.getParam("alwaysShowGrid", True) or tool: self.grid.on() else: self.grid.off() else: self.grid = None self.tracker = trackers.snapTracker() self.trackLine = trackers.lineTracker() if self.snapStyle: c = Gui.draftToolBar.getDefaultColor("snap") self.extLine = trackers.lineTracker(scolor=c) self.extLine2 = trackers.lineTracker(scolor=c) else: self.extLine = trackers.lineTracker(dotted=True) self.extLine2 = trackers.lineTracker(dotted=True) self.radiusTracker = trackers.radiusTracker() self.dim1 = trackers.archDimTracker(mode=2) self.dim2 = trackers.archDimTracker(mode=3) self.holdTracker = trackers.snapTracker() self.holdTracker.setMarker("cross") self.holdTracker.clear() self.trackers[0].append(v) self.trackers[1].append(self.grid) self.trackers[2].append(self.tracker) self.trackers[3].append(self.extLine) self.trackers[4].append(self.radiusTracker) self.trackers[5].append(self.dim1) self.trackers[6].append(self.dim2) self.trackers[7].append(self.trackLine) self.trackers[8].append(self.extLine2) self.trackers[9].append(self.holdTracker) self.activeview = v if tool and self.grid and (not self.forceGridOff): self.grid.set(tool) def addHoldPoint(self): """Add hold snap point to list of hold points.""" if self.spoint and self.spoint not in self.holdPoints: if self.holdTracker: self.holdTracker.addCoords(self.spoint) self.holdTracker.color.rgb = Gui.draftToolBar.getDefaultColor("line") self.holdTracker.on() self.holdPoints.append(self.spoint) ## @}