# # This program source code file is part of KiCad, a free EDA CAD application. # # Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # 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 General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, # MA 02110-1301, USA. # from __future__ import division import pcbnew import math class FootprintWizard(pcbnew.FootprintWizardPlugin): """! A class to simplify many aspects of footprint creation, leaving only the footprint specific routines to the wizards themselves. Inherit this class to make a new wizard. Provides simplified access to helpers like drawing functions, a transform matrix stack and simple parameter checking. Generally, you need to implement: GetValue() GenerateParameterList() CheckParameters() BuildThisFootprint() GetName() GetDescription() """ # Copy units from pcbnew uMM = pcbnew.uMM uMils = pcbnew.uMils uFloat = pcbnew.uFloat uInteger = pcbnew.uInteger uBool = pcbnew.uBool uRadians = pcbnew.uRadians uDegrees = pcbnew.uDegrees uPercent = pcbnew.uPercent uString = pcbnew.uString def __init__(self): pcbnew.FootprintWizardPlugin.__init__(self) self.GenerateParameterList() def GetName(self): """! Return the name of the footprint wizard """ raise NotImplementedError def GetDescription(self): """! Return the footprint wizard description """ raise NotImplementedError def GetValue(self): """! Return the value (name) of the generated footprint """ raise NotImplementedError def GenerateParameterList(self): """! Footprint parameter specification is done here """ raise NotImplementedError def CheckParameters(self): """! Any custom parameter checking should be performed here """ raise NotImplementedError def BuildThisFootprint(self): """! Draw the footprint. This is specific to each footprint class, you need to implement this to draw what you want """ raise NotImplementedError # Do not override this method! def BuildFootprint(self): """! Actually make the footprint. We defer all but the set-up to the implementing class """ self.buildmessages = "" self.module = pcbnew.FOOTPRINT(None) # create a new module # Perform default checks on all parameters for p in self.params: p.ClearErrors() p.Check() # use defaults self.CheckParameters() # User error checks if self.AnyErrors(): # Errors were detected! self.buildmessages = ("Cannot build footprint: " "Parameters have errors:\n") for p in self.params: if len(p.error_list) > 0: self.buildmessages += "['{page}']['{name}']:\n".format( page=p.page, name=p.name) for error in p.error_list: self.buildmessages += "\t" + error + "\n" return self.buildmessages = ( "Building new {name} footprint with the following parameters:\n" .format(name=self.name)) self.buildmessages += self.Show() self.draw = FootprintWizardDrawingAids( self.module) self.module.SetValue(self.GetValue()) self.module.SetReference("%s**" % self.GetReferencePrefix()) fpid = pcbnew.LIB_ID("", self.module.GetValue()) # the lib name (empty) and the name in library self.module.SetFPID(fpid) self.SetModule3DModel() # add a 3D module if specified thick = self.GetTextThickness() self.module.Reference().SetTextThickness(thick) self.module.Value().SetTextThickness(thick) self.BuildThisFootprint() # implementer's build function return def SetModule3DModel(self): """! If your plug-in sets a 3D model, override this function """ pass def GetTextSize(self): """! Get the default text size for the footprint. Override to change it. Defaults to IPC nominal of 1.0mm """ return pcbnew.FromMM(1.0) def GetTextThickness(self): """! Thicker than IPC guidelines (10% of text height = 0.12mm) as 5 wires/mm is a common silk screen limitation """ return pcbnew.FromMM(0.15) class FootprintWizardDrawingAids: """! Collection of handy functions to simplify drawing shapes from within footprint wizards A "drawing context" is provided which can be used to set and retain settings such as line thickness and layer. The DC also contains a "transform stack", which allows easy positioning and transforming of drawn elements without lots of geometric book-keeping. """ # directions (in degrees, compass-like) dirN = 0 dirNE = 45 dirE = 90 dirSE = 135 dirS = 180 dirSW = 225 dirW = 270 dirNW = 315 # Flip constants flipNone = 0 # no flip transform flipX = 1 # flip X values, i.e. about the Y-axis flipY = 2 # flip Y values, i.e. about the X-axis flipBoth = 3 # flip X and Y values, equivalent to a 180-degree rotation xfrmIDENTITY = [1, 0, 0, 0, 1, 0] # no transform # these values come from our KiCad Library Convention 0.11 defaultLineThickness = pcbnew.FromMM(0.15) def DefaultGraphicLayer(self): return pcbnew.F_SilkS def DefaultTextValueLayer(self): return pcbnew.F_Fab def __init__(self, module): self.module = module # drawing context defaults self.dc = { 'layer': self.DefaultGraphicLayer(), 'lineThickness': self.defaultLineThickness, 'transforms': [], 'transform': self.xfrmIDENTITY } def PushTransform(self, mat): """! Add a transform to the top of the stack and recompute the overall transform @param mat: the transform matrix to add to the stack """ self.dc['transforms'].append(mat) self.RecomputeTransforms() def PopTransform(self, num=1): """! Remove a transform from the top of the stack and recompute the overall transform @param num: the number of transforms to pop from the stack. @return the last popped transform """ for i in range(num): mat = self.dc['transforms'].pop() self.RecomputeTransforms() return mat def ResetTransform(self): """! Reset the transform stack to the identity matrix. """ self.dc['transforms'] = [] self.RecomputeTransforms() def _ComposeMatricesWithIdentity(self, mats): """! Compose a sequence of matrices together by sequential pre-multiplication with the identity matrix. @param mats: list of matrices to compose @return: the composed transform matrix """ x = self.xfrmIDENTITY for mat in mats: # Pre-compose with each transform in turn x = [ x[0] * mat[0] + x[1] * mat[3], x[0] * mat[1] + x[1] * mat[4], x[0] * mat[2] + x[1] * mat[5] + x[2], x[3] * mat[0] + x[4] * mat[3], x[3] * mat[1] + x[4] * mat[4], x[3] * mat[2] + x[4] * mat[5] + x[5]] return x def RecomputeTransforms(self): """! Re-compute the transform stack into a single transform and store in the DC """ self.dc['transform'] = self._ComposeMatricesWithIdentity( self.dc['transforms']) def TransformTranslate(self, x, y, push=True): """! Set up and return a transform matrix representing a translation optionally pushing onto the stack ( 1 0 x ) ( 0 1 y ) @param x: translation in x-direction @param y: translation in y-direction @param push: add this transform to the current stack @return the generated transform matrix """ mat = [1, 0, x, 0, 1, y] if push: self.PushTransform(mat) return mat def TransformFlipOrigin(self, flip, push=True): """! Set up and return a transform matrix representing a horizontal, vertical or both flip about the origin @param flip: one of flipNone, flipX, flipY, flipBoth @param push: add this transform to the current stack @return the generated transform matrix """ mat = None if flip == self.flipX: mat = [-1, 0, 0, 0, 1, 0] elif flip == self.flipY: mat = [1, 0, 0, 0, -1, 0] elif flip == self.flipBoth: mat = [-1, 0, 0, 0, -1, 0] elif flip == self.flipNone: mat = self.xfrmIDENTITY else: raise ValueError if push: self.PushTransform(mat) return mat def TransformFlip(self, x, y, flip=flipNone, push=True): """! Set up and return a transform matrix representing a horizontal, vertical or both flip about a point (x,y) This is performed by a translate-to-origin, flip, translate- back sequence. @param x: the x coordinate of the flip point @param y: the y coordinate of the flip point @param flip: one of flipNone, flipX, flipY, flipBoth @param push: add this transform to the current stack @return the generated transform matrix """ mats = [self.TransformTranslate(x, y, push=False), self.TransformFlipOrigin(flip, push=False), self.TransformTranslate(-x, -y, push=False)] # Distil into a single matrix mat = self._ComposeMatricesWithIdentity(mats) if push: self.PushTransform(mat) return mat def TransformRotationOrigin(self, rot, push=True): """! Set up and return a transform matrix representing a rotation about the origin, and optionally push onto the stack ( cos(t) -sin(t) 0 ) ( sin(t) cos(t) 0 ) @param rot: the rotation angle in degrees @param push: add this transform to the current stack @return the generated transform matrix """ rads = rot * math.pi / 180 mat = [math.cos(rads), -math.sin(rads), 0, math.sin(rads), math.cos(rads), 0] if push: self.PushTransform(mat) return mat def TransformRotation(self, x, y, rot, push=True): """! Set up and return a transform matrix representing a rotation about the point (x,y), and optionally push onto the stack This is performed by a translate-to-origin, rotate, translate- back sequence @param x: the x coordinate of the rotation centre @param y: the y coordinate of the rotation centre @param rot: the rotation angle in degrees @param push: add this transform to the current stack @return the generated transform matrix """ mats = [self.TransformTranslate(x, y, push=False), self.TransformRotationOrigin(rot, push=False), self.TransformTranslate(-x, -y, push=False)] # Distil into a single matrix mat = self._ComposeMatricesWithIdentity(mats) if push: self.PushTransform(mat) return mat def TransformScaleOrigin(self, sx, sy=None, push=True): """! Set up and return a transform matrix representing a scale about the origin, and optionally push onto the stack ( sx 0 0 ) ( 0 sy 0 ) @param sx: the scale factor in the x direction @param sy: the scale factor in the y direction @param push: add this transform to the current stack @return the generated transform matrix """ if sy is None: sy = sx mat = [sx, 0, 0, 0, sy, 0] if push: self.PushTransform(mat) return mat def TransformPoint(self, x, y, mat=None): """! Return a point (x, y) transformed by the given matrix, or if that is not given, the drawing context transform @param x: the x coordinate of the point to transform @param y: the y coordinate of the point to transform @param mat: the transform matrix to use or None to use the current DC's @return: the transformed point as a VECTOR2I """ if not mat: mat = self.dc['transform'] return pcbnew.VECTOR2I( (int)(x * mat[0] + y * mat[1] + mat[2]), (int)(x * mat[3] + y * mat[4] + mat[5]) ) def SetLineThickness(self, lineThickness): """! Set the current pen lineThickness used for subsequent drawing operations @param lineThickness: the new line thickness to set """ self.dc['lineThickness'] = lineThickness def SetLineTickness(self, lineThickness): """! Old version of SetLineThickness. Does the same thing, but is is only here for compatibility with old scripts. Set the current pen lineThickness used for subsequent drawing operations @param lineThickness: the new line thickness to set """ self.SetLineThickness(lineThickness) def GetLineThickness(self): """! Get the current drawing context line thickness """ return self.dc['lineThickness'] def SetLayer(self, layer): """! Set the current drawing layer, used for subsequent drawing operations """ self.dc['layer'] = layer def GetLayer(self): """! Return the current drawing layer, used for drawing operations """ return self.dc['layer'] def Line(self, x1, y1, x2, y2): """! Draw a line from (x1, y1) to (x2, y2) """ outline = pcbnew.FP_SHAPE(self.module) outline.SetWidth(self.GetLineThickness()) outline.SetLayer(self.GetLayer()) outline.SetShape(pcbnew.S_SEGMENT) start = self.TransformPoint(x1, y1) end = self.TransformPoint(x2, y2) outline.SetStartEnd(start, end) self.module.Add(outline) def Circle(self, x, y, r, filled=False): """! Draw a circle at (x,y) of radius r If filled is true, the thickness and radius of the line will be set such that the circle appears filled @param x: the x coordinate of the arc centre @param y: the y coordinate of the arc centre @param r: the circle's radius @param filled: True to draw a filled circle, False to use the current DC line thickness """ circle = pcbnew.FP_SHAPE(self.module) start = self.TransformPoint(x, y) if filled: circle.SetWidth(r) end = self.TransformPoint(x, y + r/2) else: circle.SetWidth(self.dc['lineThickness']) end = self.TransformPoint(x, y + r) circle.SetLayer(self.dc['layer']) circle.SetShape(pcbnew.S_CIRCLE) circle.SetStartEnd(start, end) self.module.Add(circle) def MyCmp(self, n1, n2): """ replace the cmp() of python2 """ if n1 < n2: return -1 if n1 > n2: return 1 return 0 def Arc(self, cx, cy, sx, sy, angle): """! Draw an arc based on centre, start and angle The transform matrix is applied Note that this won't work properly if the result is not a circular arc (e.g. a horizontal scale) @param cx: the x coordinate of the arc centre @param cy: the y coordinate of the arc centre @param sx: the x coordinate of the arc start point @param sy: the y coordinate of the arc start point @param angle: the arc's central angle (in deci-degrees) """ arc = pcbnew.FP_SHAPE(self.module) arc.SetShape(pcbnew.SHAPE_T_ARC) arc.SetWidth(self.dc['lineThickness']) center = self.TransformPoint(cx, cy) start = self.TransformPoint(sx, sy) arc.SetLayer(self.dc['layer']) # check if the angle needs to be reverse (a flip scaling) if self.MyCmp(self.dc['transform'][0], 0) != self.MyCmp(self.dc['transform'][4], 0): angle = -angle arc.SetCenter(center) arc.SetStart(start) arc.SetArcAngleAndEnd(angle, True) arc.SetLocalCoord() self.module.Add(arc) def HLine(self, x, y, l): """! Draw a horizontal line from (x,y), rightwards @param x: line start x coordinate @param y: line start y coordinate @param l: line length """ self.Line(x, y, x + l, y) def VLine(self, x, y, l): """! Draw a vertical line from (x1,y1), downwards @param x: line start x coordinate @param y: line start y coordinate @param l: line length """ self.Line(x, y, x, y + l) def Polyline(self, pts, mirrorX=None, mirrorY=None): """! Draw a polyline, optionally mirroring around the given points @param pts: list of polyline vertices (list of (x, y)) @param mirrorX: x coordinate of mirror point (None for no x-flip) @param mirrorY: y coordinate of mirror point (None for no y-flip) """ def _PolyLineInternal(pts): if len(pts) < 2: return for i in range(0, len(pts) - 1): self.Line(pts[i][0], pts[i][1], pts[i+1][0], pts[i+1][1]) _PolyLineInternal(pts) # original if mirrorX is not None and mirrorY is not None: self.TransformFlip(mirrorX, mirrorY, self.flipBoth) # both _PolyLineInternal(pts) self.PopTransform() elif mirrorX is not None: self.TransformFlip(mirrorX, 0, self.flipX) _PolyLineInternal(pts) self.PopTransform() elif mirrorY is not None: self.TransformFlip(0, mirrorY, self.flipY) _PolyLineInternal(pts) self.PopTransform() def Reference(self, x, y, size, orientation_degree=0): """! Draw the module's reference as the given point. The actual setting of the reference is not done in this drawing aid - that is up to the wizard @param x: the x position of the reference @param y: the y position of the reference @param size: the text size (in both directions) @param orientation_degree: text orientation in degrees """ text_size = pcbnew.VECTOR2I(size, size) self.module.Reference().SetPos0(self.TransformPoint(x, y)) self.module.Reference().SetPosition( self.module.Reference().GetPos0()) self.module.Reference().SetTextSize(text_size) self.module.Reference().SetTextAngle( pcbnew.EDA_ANGLE( orientation_degree, pcbnew.DEGREES_T ) ) def Value(self, x, y, size, orientation_degree=0): """! As for references, draw the module's value @param x: the x position of the value @param y: the y position of the value @param size: the text size (in both directions) @param orientation_degree: text orientation in degrees """ text_size = pcbnew.VECTOR2I(size, size) self.module.Value().SetPos0(self.TransformPoint(x, y)) self.module.Value().SetPosition(self.module.Value().GetPos0()) self.module.Value().SetTextSize(text_size) self.module.Value().SetLayer(self.DefaultTextValueLayer()) self.module.Value().SetTextAngle( pcbnew.EDA_ANGLE( orientation_degree, pcbnew.DEGREES_T ) ) def Box(self, x, y, w, h): """! Draw a rectangular box, centred at (x,y), with given width and height @param x: the x coordinate of the box's centre @param y: the y coordinate of the box's centre @param w: the width of the box @param h: the height of the box """ pts = [[x - w/2, y - h/2], # left [x + w/2, y - h/2], # right [x + w/2, y + h/2], # bottom [x - w/2, y + h/2], # top [x - w/2, y - h/2]] # close self.Polyline(pts) def NotchedCircle(self, x, y, r, notch_w, notch_h, rotate=0): """! Circle radius r centred at (x, y) with a raised or depressed notch at the top Notch height is measured from the top of the circle radius @param x: the x coordinate of the circle's centre @param y: the y coordinate of the circle's centre @param r: the radius of the circle @param notch_w: the width of the notch @param notch_h: the height of the notch @param rotate: the rotation of the whole figure, in degrees """ self.TransformRotation(x, y, rotate) # find the angle where the notch vertical meets the circle angle_intercept = math.asin(notch_w/(2 * r)) # and find the co-ords of this point sx = math.sin(angle_intercept) * r sy = -math.cos(angle_intercept) * r # NOTE: this may be out by a factor of ten one day arc_angle = (math.pi * 2 - angle_intercept * 2) * (1800/math.pi) self.Arc(x, y, sx, sy, arc_angle) pts = [[sx, sy], [sx, -r - notch_h], [-sx, -r - notch_h], [-sx, sy]] self.Polyline(pts) self.PopTransform() def NotchedBox(self, x, y, w, h, notchW, notchH, rotate=0): """! Draw a box with a notch in the centre of the top edge @param x: the x coordinate of the circle's centre @param y: the y coordinate of the circle's centre @param w: the width of the box @param h: the height of the box @param notchW: the width of the notch @param notchH: the height of the notch @param rotate: the rotation of the whole figure, in degrees """ self.TransformRotation(x, y, rotate) # limit to half the overall width notchW = min(x + w/2, notchW) # draw notch self.Polyline([ # three sides of box (x - w/2, y - h/2), (x - w/2, y + h/2), (x + w/2, y + h/2), (x + w/2, y - h/2), # the notch (notchW/2, y - h/2), (notchW/2, y - h/2 + notchH), (-notchW/2, y - h/2 + notchH), (-notchW/2, y - h/2), (x - w/2, y - h/2) ]) self.PopTransform() def BoxWithDiagonalAtCorner(self, x, y, w, h, setback=pcbnew.FromMM(1.27), flip=flipNone): """! Draw a box with a diagonal at the top left corner. @param x: the x coordinate of the circle's centre @param y: the y coordinate of the circle's centre @param w: the width of the box @param h: the height of the box @param setback: the set-back of the diagonal, in both x and y @param flip: one of flipNone, flipX, flipY or flipBoth to change the diagonal corner """ self.TransformFlip(x, y, flip, push=True) pts = [[x - w/2 + setback, y - h/2], [x - w/2, y - h/2 + setback], [x - w/2, y + h/2], [x + w/2, y + h/2], [x + w/2, y - h/2], [x - w/2 + setback, y - h/2]] self.Polyline(pts) self.PopTransform() def BoxWithOpenCorner(self, x, y, w, h, setback=pcbnew.FromMM(1.27), flip=flipNone): """! Draw a box with an opening at the top left corner @param x: the x coordinate of the circle's centre @param y: the y coordinate of the circle's centre @param w: the width of the box @param h: the height of the box @param setback: the set-back of the opening, in both x and y @param flip: one of flipNone, flipX, flipY or flipBoth to change the open corner position """ self.TransformTranslate(x, y) self.TransformFlipOrigin(flip) pts = [[- w/2, - h/2 + setback], [- w/2, + h/2], [+ w/2, + h/2], [+ w/2, - h/2], [- w/2 + setback, - h/2]] self.Polyline(pts) self.PopTransform(num=2) def RoundedBox(self, x, y, w, h, rad): """! Draw a box with rounded corners (i.e. a 90-degree circular arc) :param x: the x coordinate of the box's centre :param y: the y coordinate of the box's centre :param w: the width of the box :param h: the height of the box :param rad: the radius of the corner rounds """ x_inner = w - rad * 2 y_inner = h - rad * 2 x_left = x - w / 2 y_top = y - h / 2 # Draw straight sections self.HLine(x_left + rad, y_top, x_inner) self.HLine(x_left + rad, -y_top, x_inner) self.VLine(x_left, y_top + rad, y_inner) self.VLine(-x_left, y_top + rad, y_inner) # corner arcs ninety_deg = 90 * 10 # deci-degs cx = x - w / 2 + rad cy = y - h / 2 + rad # top left self.Arc(+cx, +cy, +x_left, +cy, +ninety_deg) self.Arc(-cx, +cy, -x_left, +cy, -ninety_deg) self.Arc(+cx, -cy, +x_left, -cy, -ninety_deg) self.Arc(-cx, -cy, -x_left, -cy, +ninety_deg) def ChamferedBox(self, x, y, w, h, chamfer_x, chamfer_y): """! Draw a box with chamfered corners. :param x: the x coordinate of the box's centre :param y: the y coordinate of the box's centre :param w: the width of the box :param h: the height of the box :param chamfer_x: the size of the chamfer set-back in the x direction :param chamfer_y: the size of the chamfer set-back in the y direction """ # outermost dimensions x_left = x - w / 2 y_top = y - h / 2 # x and y coordinates of inner edges of chamfers x_inner = x_left + chamfer_x y_inner = y_top + chamfer_y pts = [ [+x_inner, +y_top], [-x_inner, +y_top], [-x_left, +y_inner], [-x_left, -y_inner], [-x_inner, -y_top], [+x_inner, -y_top], [+x_left, -y_inner], [+x_left, +y_inner], [+x_inner, +y_top], ] self.draw.Polyline(pts) def MarkerArrow(self, x, y, direction=dirN, width=pcbnew.FromMM(1)): """! Draw a marker arrow facing in the given direction, with the point at (x,y) @param x: x position of the arrow tip @param y: y position of the arrow tip @param direction: arrow direction in degrees (0 is "north", can use dir* shorthands) @param width: arrow width """ self.TransformTranslate(x, y) self.TransformRotationOrigin(direction) pts = [[0, 0], [width / 2, width / 2], [-width / 2, width / 2], [0, 0]] self.Polyline(pts) self.PopTransform(2)