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-rw-r--r--kimesh/mesh_dialog.py695
1 files changed, 695 insertions, 0 deletions
diff --git a/kimesh/mesh_dialog.py b/kimesh/mesh_dialog.py
new file mode 100644
index 0000000..fbdbd7a
--- /dev/null
+++ b/kimesh/mesh_dialog.py
@@ -0,0 +1,695 @@
+from collections import defaultdict
+import dataclasses
+from contextlib import contextmanager
+import textwrap
+import random
+import math
+from itertools import count, islice
+import json
+from os import path
+
+import wx
+
+import pcbnew
+
+import matplotlib.cm
+import shapely
+from shapely import geometry
+from shapely.geometry import polygon
+from shapely import affinity
+import shapely.ops
+
+from . import mesh_plugin_dialog
+
+class GeneratorError(ValueError):
+ pass
+
+class AbortError(SystemError):
+ pass
+
+@dataclasses.dataclass
+class GeneratorSettings:
+ mesh_angle: float = 0.0 # deg
+ trace_width: float = 0.127 # mm
+ space_width: float = 0.127 # mm
+ edge_clearance: float = 1.5 # mm
+ anchor_exit: float = 0.0 # deg
+ anchor: str = None # Footprint designator
+ num_traces: int = 2
+ offset_x: float = 0.0 # mm
+ offset_y: float = 0.0 # mm
+ chamfer: float = 0.0 # unit fraction
+ target_layer_id:int = 0 # kicad layer id, populated later
+ mask_layer_id: int = 0 # kicad layer id, populated later
+ random_seed: str = None
+ randomness: float = 1.0
+
+ def serialize(self):
+ d = dataclasses.asdict(self)
+ d['kimesh_settings_version'] = '1.0.0'
+ return json.dumps(d).encode()
+
+ @classmethod
+ def deserialize(cls, data):
+ d = json.loads(data.decode())
+ version = d.pop('kimesh_settings_version')
+ vtup = tuple(map(int, version.split('.')))
+ if vtup > (2, 0, 0):
+ raise cls.VersionError("Project kimesh settings file is too new for this plugin's version.")
+ return cls(**d)
+
+ class VersionError(ValueError):
+ pass
+
+
+class MeshPluginMainDialog(mesh_plugin_dialog.MainDialog):
+ def __init__(self, board):
+ mesh_plugin_dialog.MainDialog.__init__(self, None)
+ self.board = board
+
+ self.m_cancelButton.Bind(wx.EVT_BUTTON, self.quit)
+ self.m_removeButton.Bind(wx.EVT_BUTTON, self.confirm_tearup_mesh)
+ self.m_removeAllButton.Bind(wx.EVT_BUTTON, self.confirm_tearup_mesh_all)
+ self.m_generateButton.Bind(wx.EVT_BUTTON, self.generate_mesh)
+ self.m_net_prefix.Bind(wx.EVT_TEXT, self.update_net_label)
+ # currently, BOARD.Remove() is b0rked and kicad crashes. Disable function for now.
+ self.m_removeButton.Disable()
+ self.m_removeAllButton.Disable()
+
+ self.tearup_confirm_dialog = wx.MessageDialog(self, "", style=wx.YES_NO | wx.NO_DEFAULT)
+
+ self.nets = { str(wxs) for wxs, netinfo in board.GetNetsByName().items() }
+ self.update_net_label(None)
+
+ self.Fit()
+
+ for i in range(pcbnew.PCB_LAYER_ID_COUNT):
+ name = board.GetLayerName(i)
+ self.m_layerChoice.Append(name)
+ self.m_maskLayerChoice.Append(name)
+ if name == 'User.Eco1':
+ self.m_maskLayerChoice.SetSelection(i)
+ elif name == 'B.Cu':
+ self.m_layerChoice.SetSelection(i)
+
+ if path.isfile(self.settings_fn()):
+ with open(self.settings_fn(), 'rb') as f:
+ try:
+ settings = GeneratorSettings.deserialize(f.read())
+
+ self.m_angleSpin.Value = settings.mesh_angle
+ self.m_traceSpin.Value = settings.trace_width
+ self.m_spaceSpin.Value = settings.space_width
+ self.m_exitSpin.Value = settings.anchor_exit
+ self.m_anchorInput.Value = settings.anchor
+ self.m_traceCountSpin.Value = settings.num_traces
+ self.m_offsetXSpin.Value = settings.offset_x
+ self.m_offsetYSpin.Value = settings.offset_y
+ self.m_chamferSpin.Value = settings.chamfer*100.0
+ self.m_layerChoice.SetSelection(settings.target_layer_id)
+ self.m_maskLayerChoice.SetSelection(settings.mask_layer_id)
+ self.m_seedInput.Value = settings.random_seed or ''
+ self.m_randomnessSpin.Value = settings.randomness*100.0
+ self.m_edgeClearanceSpin.Value = settings.edge_clearance
+
+ except GeneratorSettings.VersionError as e:
+ wx.MessageDialog(self, "Cannot load settings: {}.".format(e), "File I/O error").ShowModal()
+
+ self.SetMinSize(self.GetSize())
+
+ def get_matching_nets(self):
+ prefix = self.m_net_prefix.Value
+ return { net for net in self.nets if net.startswith(prefix) }
+
+ def net_names(self):
+ prefix = self.m_net_prefix.Value
+ for i in count():
+ yield f'{prefix}{i}'
+
+ def confirm_tearup_mesh_all(self, evt):
+ self.tearup_confirm_dialog.SetMessage('Do you really want to tear up all autorouted traces on this board? This stap cannot be undone!')
+ self.tearup_confirm_dialog.SetYesNoLabels("Tear up all autorouted traces", "Close")
+
+ if self.tearup_confirm_dialog.ShowModal() == wx.ID_YES:
+ self.tearup_mesh()
+
+ def confirm_tearup_mesh(self, evt):
+ matching = self.get_matching_nets()
+
+ if not str(self.m_net_prefix.Value):
+ message = "You have set an empty net prefix. This will match ALL {} nets on the board. Do you really want to tear up all autorouted tracks? This cannot be undone!"
+
+ else:
+ message = "Do you really want to tear up all autorouted traces of the {} matching nets on this board? This step cannot be undone!"
+
+ message = message.format(len(matching)) + "\n\nMatching nets:\n" + ", ".join(
+ '""' if not netname else (netname[:16] + '...' if len(netname) > 16 else netname)
+ for netname in (sorted(matching)[:5] + ['...'] if len(matching) > 5 else [])
+ )
+ self.tearup_confirm_dialog.SetMessage(message)
+ self.tearup_confirm_dialog.SetYesNoLabels("Tear up {} traces".format(len(matching)), "Close")
+
+ if self.tearup_confirm_dialog.ShowModal() == wx.ID_YES:
+ self.tearup_mesh(matching)
+
+ def tearup_mesh(self, matching=None):
+ count = 0
+ for track in self.board.GetTracks():
+ if not (track.GetStatus() & pcbnew.TRACK_AR):
+ continue
+
+ if matching is not None and track.GetNet().GetNetname() not in matching:
+ continue
+
+ count += 1
+ self.board.Remove(track)
+ print(f'Tore up {count} trace segments.')
+
+ def settings_fn(self):
+ return path.join(path.dirname(self.board.GetFileName()), 'last_kimesh_settings.json')
+
+ def generate_mesh(self, evt):
+ try:
+ settings = GeneratorSettings(
+ mesh_angle = float(self.m_angleSpin.Value),
+ trace_width = float(self.m_traceSpin.Value),
+ space_width = float(self.m_spaceSpin.Value),
+ edge_clearance = float(self.m_edgeClearanceSpin.Value),
+ anchor_exit = float(self.m_exitSpin.Value),
+ anchor = str(self.m_anchorInput.Value),
+ num_traces = int(self.m_traceCountSpin.Value),
+ offset_x = float(self.m_offsetXSpin.Value),
+ offset_y = float(self.m_offsetYSpin.Value),
+ chamfer = float(self.m_chamferSpin.Value)/100.0,
+ target_layer_id = self.m_layerChoice.GetSelection(),
+ mask_layer_id = self.m_maskLayerChoice.GetSelection(),
+ random_seed = str(self.m_seedInput.Value) or None,
+ randomness = float(self.m_randomnessSpin.Value)/100.0)
+ except ValueError as e:
+ return wx.MessageDialog(self, "Invalid input value: {}.".format(e), "Invalid input").ShowModal()
+
+ try:
+ with open(self.settings_fn(), 'wb') as f:
+ f.write(settings.serialize())
+ print('Saved settings to', f.name)
+ except:
+ wx.MessageDialog(self, "Cannot save settings: {}.".format(e), "File I/O error").ShowModal()
+
+ mesh_zones = []
+ for drawing in self.board.GetDrawings():
+ if drawing.GetLayer() == settings.mask_layer_id:
+ mesh_zones.append(drawing)
+
+ if not mesh_zones:
+ return wx.MessageDialog(self, "Error: Could not find any mesh zones on the outline pattern layer.").ShowModal()
+
+
+ outlines = pcbnew.SHAPE_POLY_SET()
+ self.board.GetBoardPolygonOutlines(outlines, "")
+ board_outlines = list(self.poly_set_to_shapely(outlines))
+ board_mask = shapely.ops.unary_union(board_outlines)
+ board_mask = board_mask.buffer(-settings.edge_clearance)
+
+ zone_outlines = [ outline for zone in mesh_zones for outline in self.poly_set_to_shapely(zone.GetPolyShape()) ]
+ zone_mask = shapely.ops.unary_union(zone_outlines)
+
+ mask = zone_mask.intersection(board_mask)
+
+ anchor = [ mod for mod in self.board.GetModules() if mod.GetReference() == settings.anchor ]
+ if len(anchor) == 0:
+ return wx.MessageDialog(self, f'Error: Could not find anchor footprint "{self.m_anchorInput.Value}".').ShowModal()
+ if len(anchor) > 1:
+ return wx.MessageDialog(self, f'Error: Multiple footprints with anchor footprint reference "{self.m_anchorInput.Value}".').ShowModal()
+ anchor, = anchor
+
+ try:
+ def warn(msg):
+ dialog = wx.MessageDialog(self, msg + '\n\nDo you want to abort mesh generation?',
+ "Mesh Generation Warning").ShowModal()
+ dialog = wx.MessageDialog(self, "", style=wx.YES_NO | wx.NO_DEFAULT)
+ dialog.SetYesNoLabels("Abort", "Ignore and continue")
+
+ if self.tearup_confirm_dialog.ShowModal() == wx.ID_YES:
+ raise AbortError()
+
+ nets = list(islice(self.net_names(), settings.num_traces))
+ self.generate_mesh_backend(mask, anchor, nets=nets, warn=warn, settings=settings)
+
+ except GeneratorError as e:
+ return wx.MessageDialog(self, str(e), "Mesh Generation Error").ShowModal()
+ except AbortError:
+ pass
+
+ def poly_set_to_shapely(self, poly_set):
+ for i in range(poly_set.OutlineCount()):
+ outline = poly_set.Outline(i)
+
+ def shape_line_chain_to_coords(line_chain):
+ points = []
+ for j in range(line_chain.PointCount()):
+ point = line_chain.CPoint(j)
+ points.append((pcbnew.ToMM(point.x), pcbnew.ToMM(point.y)))
+ return points
+
+ exterior = shape_line_chain_to_coords(outline)
+ interiors = [ shape_line_chain_to_coords(poly_set.Hole(i, j)) for j in range(poly_set.HoleCount(i)) ]
+ yield polygon.Polygon(exterior, interiors)
+
+ def generate_mesh_backend(self, mask, anchor, nets, warn=lambda s: None, settings=GeneratorSettings()):
+ anchor_outlines = list(self.poly_set_to_shapely(anchor.GetBoundingPoly()))
+ if len(anchor_outlines) == 0:
+ raise GeneratorError('Could not find any outlines for anchor {}'.format(anchor.GetReference()))
+ if len(anchor_outlines) > 1:
+ warn('Anchor {} has multiple outlines. Using first outline for trace start.')
+
+ width_per_trace = settings.trace_width + settings.space_width
+ grid_cell_width = width_per_trace * settings.num_traces * 2
+
+ mask_rotated = affinity.rotate(mask, -settings.mesh_angle, origin=mask.centroid)
+ bbox = mask_rotated.bounds
+
+ grid_origin = (bbox[0] + settings.offset_x - grid_cell_width, bbox[1] + settings.offset_y - grid_cell_width)
+ grid_rows = int((bbox[3] - grid_origin[1]) / grid_cell_width + 2)
+ grid_cols = int((bbox[2] - grid_origin[0]) / grid_cell_width + 2)
+ print(f'generating grid of size {grid_rows} * {grid_cols}')
+
+ grid = []
+ for y in range(grid_rows):
+ row = []
+ for x in range(grid_cols):
+ cell = polygon.Polygon([(0, 0), (0, 1), (1, 1), (1, 0)])
+ cell = affinity.scale(cell, grid_cell_width, grid_cell_width, origin=(0, 0))
+ cell = affinity.translate(cell, grid_origin[0] + x*grid_cell_width, grid_origin[1] + y*grid_cell_width)
+ cell = affinity.rotate(cell, settings.mesh_angle, origin=mask.centroid)
+ row.append(cell)
+ grid.append(row)
+
+ exit_line = affinity.rotate(geometry.LineString([(0,0), (0,-100000)]), settings.anchor_exit, origin=(0, 0))
+ exit_line = affinity.translate(exit_line, anchor_outlines[0].centroid.x, anchor_outlines[0].centroid.y)
+ possible_exits = []
+ for y, row in enumerate(grid):
+ for x, cell in enumerate(row):
+ if any(ol.overlaps(cell) for ol in anchor_outlines): # cell lies on outline
+ if exit_line.crosses(cell): # cell lies on exit line
+ possible_exits.append((cell, (x, y)))
+ if len(possible_exits) == 0:
+ raise GeneratorError('Cannot find an exit. This is a bug, please report.')
+ exit_cell = possible_exits[0] # might overlap multiple if not orthogonal
+
+ num_valid = 0
+ with DebugOutput('dbg_grid.svg') as dbg:
+ dbg.add(mask, color='#00000020')
+
+ for y, row in enumerate(grid):
+ for x, cell in enumerate(row):
+ if mask.contains(cell):
+ if cell == exit_cell[0]:
+ color = '#ff00ff80'
+ elif any(ol.overlaps(cell) for ol in anchor_outlines):
+ color = '#ffff0080'
+ elif any(ol.contains(cell) for ol in anchor_outlines):
+ color = '#ff000080'
+ else:
+ num_valid += 1
+ color = '#00ff0080'
+ elif mask.overlaps(cell):
+ color = '#ffff0080'
+ else:
+ color = '#ff000080'
+ dbg.add(cell, color=color)
+
+ for foo in anchor_outlines:
+ dbg.add(foo, color='#0000ff00', stroke_width=0.05, stroke_color='#000000ff')
+
+ def is_valid(cell):
+ if not mask.contains(cell):
+ return False
+ if any(ol.overlaps(cell) for ol in anchor_outlines):
+ return False
+ if any(ol.contains(cell) for ol in anchor_outlines):
+ return False
+ return True
+
+ def iter_neighbors(x, y):
+ if x > 0:
+ yield x-1, y, 0b0100
+ if x < grid_cols:
+ yield x+1, y, 0b0001
+ if y > 0:
+ yield x, y-1, 0b1000
+ if y < grid_rows:
+ yield x, y+1, 0b0010
+
+ def reciprocal(mask):
+ return {
+ 0b0001: 0b0100,
+ 0b0010: 0b1000,
+ 0b0100: 0b0001,
+ 0b1000: 0b0010,
+ 0b0000: 0b0000
+ }[mask]
+
+ rnd_state = random.Random(settings.random_seed)
+ def skewed_random_iter(it, mask, randomness):
+ l = list(it)
+ if rnd_state.random() < 1.0 - randomness:
+ for x, y, m in l:
+ if m == mask:
+ yield x, y, m
+ break
+ l.remove((x, y, m))
+ rnd_state.shuffle(l)
+ yield from l
+
+ def add_track(segment:geometry.LineString, net=None):
+ coords = list(segment.coords)
+ for (x1, y1), (x2, y2) in zip(coords, coords[1:]):
+ if (x1, y1) == (x2, y2): # zero-length track due to zero chamfer
+ continue
+ track = pcbnew.TRACK(self.board)
+ track.SetStatus(track.GetStatus() | pcbnew.TRACK_AR)
+ track.SetStart(pcbnew.wxPoint(pcbnew.FromMM(x1), pcbnew.FromMM(y1)))
+ track.SetEnd(pcbnew.wxPoint(pcbnew.FromMM(x2), pcbnew.FromMM(y2)))
+ track.SetWidth(pcbnew.FromMM(settings.trace_width))
+ track.SetLayer(settings.target_layer_id)
+ if net is not None:
+ track.SetNet(net)
+ self.board.Add(track)
+
+ netinfos = []
+ for name in nets:
+ ni = pcbnew.NETINFO_ITEM(self.board, name)
+ self.board.Add(ni)
+ netinfos.append(ni)
+
+ not_visited = { (x, y) for x in range(grid_cols) for y in range(grid_rows) if is_valid(grid[y][x]) }
+ num_to_visit = len(not_visited)
+ track_count = 0
+ with DebugOutput('dbg_cells.svg') as dbg_cells,\
+ DebugOutput('dbg_composite.svg') as dbg_composite,\
+ DebugOutput('dbg_tiles.svg') as dbg_tiles,\
+ DebugOutput('dbg_traces.svg') as dbg_traces:
+ dbg_cells.add(mask, color='#00000020')
+ dbg_composite.add(mask, color='#00000020')
+ dbg_traces.add(mask, color='#00000020')
+ dbg_tiles.add(mask, color='#00000020')
+
+ TILE_COLORS = {
+ 0b0000: '#ffcc00ff',
+ 0b0001: '#d40000ff',
+ 0b0010: '#d40000ff',
+ 0b0011: '#ff6600ff',
+ 0b0100: '#d40000ff',
+ 0b0101: '#00d400ff',
+ 0b0110: '#ff6600ff',
+ 0b0111: '#00ccffff',
+ 0b1000: '#d40000ff',
+ 0b1001: '#ff6600ff',
+ 0b1010: '#00d400ff',
+ 0b1011: '#00ccffff',
+ 0b1100: '#ff6600ff',
+ 0b1101: '#00ccffff',
+ 0b1110: '#00ccffff',
+ 0b1111: '#ffcc00ff'}
+ x, y = exit_cell[1]
+ visited = 0
+ key = 0
+ entry_dir = 0
+ stack = []
+ depth = 0
+ max_depth = 0
+ i = 0
+ past_tiles = {}
+ def dump_output(i):
+ with DebugOutput(f'per-tile/step{i}.svg') as dbg_per_tile:
+ dbg_per_tile.add(mask, color='#00000020')
+ for foo in anchor_outlines:
+ dbg_per_tile.add(foo, color='#00000080', stroke_width=0.05, stroke_color='#00000000')
+
+ for le_y, row in enumerate(grid):
+ for le_x, cell in enumerate(row):
+ if mask.contains(cell):
+ if cell == exit_cell[0]:
+ color = '#ff00ff80'
+ elif any(ol.overlaps(cell) for ol in anchor_outlines):
+ color = '#ffff0080'
+ elif any(ol.contains(cell) for ol in anchor_outlines):
+ color = '#ff000080'
+ else:
+ color = '#00ff0080'
+ elif mask.overlaps(cell):
+ color = '#ffff0080'
+ else:
+ color = '#ff000080'
+ dbg_per_tile.add(cell, color=color)
+
+ for (le_x, le_y), (stroke_color, segments) in past_tiles.items():
+ for segment in segments:
+ segment = affinity.scale(segment, grid_cell_width, grid_cell_width, origin=(0, 0))
+ segment = affinity.translate(segment, grid_origin[0] + le_x*grid_cell_width, grid_origin[1] + le_y*grid_cell_width)
+ segment = affinity.rotate(segment, settings.mesh_angle, origin=mask.centroid)
+ dbg_per_tile.add(segment, stroke_width=settings.trace_width, color='#ff000000', stroke_color=stroke_color)
+
+ armed = False
+ while not_visited or stack:
+ print(f'iteration {i}: {len(not_visited)}, {len(stack)}')
+ for n_x, n_y, bmask in skewed_random_iter(iter_neighbors(x, y), entry_dir, settings.randomness):
+ if (n_x, n_y) in not_visited:
+ dbg_composite.add(grid[n_y][n_x], color=('visit_depth', depth), opacity=1.0)
+ dbg_cells.add(grid[n_y][n_x], color=('visit_depth', depth), opacity=1.0)
+ key |= bmask
+ stack.append((x, y, key, bmask, depth))
+ not_visited.remove((n_x, n_y))
+ visited += 1
+ depth += 1
+ i += 1
+ armed = True
+ max_depth = max(depth, max_depth)
+
+ past_tiles[x, y] = (TILE_COLORS[key],
+ [segment
+ for segment, _net in Pattern.render(key, settings.num_traces, settings.chamfer) ])
+
+ x, y, key, entry_dir = n_x, n_y, reciprocal(bmask), bmask
+ #dump_output(i)
+ break
+ else:
+ stroke_color = TILE_COLORS[key]
+ past_tiles[x, y] = (stroke_color,
+ [segment
+ for segment, _net in Pattern.render(key, settings.num_traces, settings.chamfer) ])
+ for segment, net in Pattern.render(key, settings.num_traces, settings.chamfer):
+ segment = affinity.scale(segment, grid_cell_width, grid_cell_width, origin=(0, 0))
+ segment = affinity.translate(segment, grid_origin[0] + x*grid_cell_width, grid_origin[1] + y*grid_cell_width)
+ segment = affinity.rotate(segment, settings.mesh_angle, origin=mask.centroid)
+ dbg_composite.add(segment, stroke_width=settings.trace_width, color='#ff000000', stroke_color='#ffffff60')
+ dbg_traces.add(segment, stroke_width=settings.trace_width, color='#ff000000', stroke_color='#000000ff')
+ dbg_tiles.add(segment, stroke_width=settings.trace_width, color='#ff000000', stroke_color=stroke_color)
+ add_track(segment, netinfos[net]) # FIXME (works, disabled for debug)
+ track_count += 1
+ if not stack:
+ break
+ if armed:
+ i += 1
+ #dump_output(i)
+ armed = False
+ *stack, (x, y, key, entry_dir, depth) = stack
+
+ dbg_cells.scale_colors('visit_depth', max_depth)
+ dbg_composite.scale_colors('visit_depth', max_depth)
+
+ for foo in anchor_outlines:
+ dbg_cells.add(foo, color='#00000080', stroke_width=0.05, stroke_color='#00000000')
+ dbg_traces.add(foo, color='#00000080', stroke_width=0.05, stroke_color='#00000000')
+ dbg_composite.add(foo, color='#00000080', stroke_width=0.05, stroke_color='#00000000')
+ dbg_tiles.add(foo, color='#00000080', stroke_width=0.05, stroke_color='#00000000')
+
+
+ print(f'Added {track_count} trace segments.')
+
+ #pcbnew.Refresh()
+ #self.tearup_mesh()
+ # TODO generate
+
+ def update_net_label(self, evt):
+ self.m_netLabel.SetLabel('Like: ' + ', '.join(islice(self.net_names(), 3)) + ', ...')
+
+ def quit(self, evt):
+ self.Destroy()
+
+
+class Pattern:
+ @staticmethod
+ def render(key, n, cd=0):
+ yield from Pattern.LUT[key](n, cd=math.tan(math.pi/8) * cd)
+
+ def draw_I(n, cd):
+ for i in range(n):
+ sp = (i+0.5) * (1/(2*n))
+ yield geometry.LineString([(sp, 0), (sp, 1)]), i
+ sp = (2*n-1-i+0.5) * (1/(2*n))
+ yield geometry.LineString([(sp, 0), (sp, 1)]), i
+
+ def draw_U(n, cd):
+ pitch = (1/(2*n))
+ cd *= pitch # chamfer depth
+ for i in range(n):
+ sp = (i+0.5) * pitch
+ yield geometry.LineString([(sp, 0), (sp, 1-sp-cd), (sp+cd, 1-sp), (1-sp-cd, 1-sp), (1-sp, 1-sp-cd), (1-sp, 0)]), i
+
+ def draw_L(n, cd):
+ pitch = (1/(2*n))
+ cd *= pitch # chamfer depth
+ for i in range(n):
+ sp = (i+0.5) * pitch
+ yield geometry.LineString([(sp, 0), (sp, 1-sp-cd), (sp+cd, 1-sp), (1, 1-sp)]), i
+ sp = (2*n-1-i+0.5) * pitch
+ yield geometry.LineString([(sp, 0), (sp, 1-sp-cd), (sp+cd, 1-sp), (1, 1-sp)]), i
+
+ def draw_T(n, cd):
+ pitch = (1/(2*n))
+ cd *= pitch # chamfer depth
+ for i in range(n):
+ sp = (i+0.5) * pitch
+ # through line
+ yield geometry.LineString([(0, sp), (1, sp)]), i
+ # two corners on the opposite side
+ yield geometry.LineString([(0, 1-sp), (sp-cd, 1-sp), (sp, 1-sp+cd), (sp, 1)]), i
+ yield geometry.LineString([(1-sp, 1), (1-sp, 1-sp+cd), (1-sp+cd, 1-sp), (1, 1-sp)]), i
+
+ def draw_X(n, cd):
+ pitch = (1/(2*n))
+ cd *= pitch # chamfer depth
+ for i in range(n):
+ sp = (i+0.5) * pitch
+ yield geometry.LineString([(0, sp), (sp-cd, sp), (sp, sp-cd), (sp, 0)]), i
+ yield geometry.LineString([(1-sp, 0), (1-sp, sp-cd), (1-sp+cd, sp), (1, sp)]), i
+ yield geometry.LineString([(0, 1-sp), (sp-cd, 1-sp), (sp, 1-sp+cd), (sp, 1)]), i
+ yield geometry.LineString([(1-sp, 1), (1-sp, 1-sp+cd), (1-sp+cd, 1-sp), (1, 1-sp)]), i
+
+ def rotate(pattern, deg):
+ def wrapper(n, *args, **kwargs):
+ for segment, net in pattern(n, *args, **kwargs):
+ yield affinity.rotate(segment, deg, origin=(0.5, 0.5)), net
+ return wrapper
+
+ def raise_error(n, *args, **kwargs):
+ #raise ValueError('Tried to render invalid cell. This is a bug.')
+ return []
+
+ LUT = {
+ 0b0000: raise_error,
+ 0b0001: rotate(draw_U, 90),
+ 0b0010: rotate(draw_U, 180),
+ 0b0011: rotate(draw_L, 90),
+ 0b0100: rotate(draw_U, -90),
+ 0b0101: rotate(draw_I, -90),
+ 0b0110: rotate(draw_L, 180),
+ 0b0111: draw_T,
+ 0b1000: draw_U,
+ 0b1001: draw_L,
+ 0b1010: draw_I,
+ 0b1011: rotate(draw_T, -90),
+ 0b1100: rotate(draw_L, -90),
+ 0b1101: rotate(draw_T, 180),
+ 0b1110: rotate(draw_T, 90),
+ 0b1111: draw_X
+ }
+
+
+def virihex(val, max=1.0, alpha=1.0):
+ r, g, b, _a = matplotlib.cm.viridis(val/max)
+ r, g, b, a = [ int(round(0xff*c)) for c in [r, g, b, alpha] ]
+ return f'#{r:02x}{g:02x}{b:02x}{a:02x}'
+
+@contextmanager
+def DebugOutput(filename):
+ filename = path.join('/tmp', filename)
+ with open(filename, 'w') as f:
+ wrapper = DebugOutputWrapper(f)
+ yield wrapper
+ wrapper.save()
+
+class DebugOutputWrapper:
+ def __init__(self, f):
+ self.f = f
+ self.objs = []
+
+ def scale_colors(self, group, max_value):
+ self.objs = [
+ (obj,
+ (virihex(color[1], max=max_value) if isinstance(color, tuple) and color[0] == group else color,
+ *rest))
+ for obj, (color, *rest) in self.objs ]
+
+ def add(self, obj, color=None, stroke_width=0, stroke_color=None, opacity=1.0):
+ self.objs.append((obj, (color, stroke_color, stroke_width, opacity)))
+
+ def gen_svg(self, obj, fill_color=None, stroke_color=None, stroke_width=None, opacity=1.0):
+ fill_color = fill_color or '#ff0000aa'
+ stroke_color = stroke_color or '#000000ff'
+ stroke_width = 0 if stroke_width is None else stroke_width
+
+ if isinstance(obj, geometry.MultiPolygon):
+ out = ''
+ for geom in obj.geoms:
+ out += gen_svg(geom, fill_color, stroke_color, stroke_width, opacity)
+ return out
+
+ elif isinstance(obj, polygon.Polygon):
+ exterior_coords = [ ["{},{}".format(*c) for c in obj.exterior.coords] ]
+ interior_coords = [ ["{},{}".format(*c) for c in interior.coords] for interior in obj.interiors ]
+ all_coords = exterior_coords + interior_coords
+ path = " ".join([
+ "M {0} L {1} z".format(coords[0], " L ".join(coords[1:]))
+ for coords in all_coords])
+
+ elif isinstance(obj, geometry.LineString):
+ all_coords = [ ["{},{}".format(*c) for c in obj.coords] ]
+ path = " ".join([
+ "M {0} L {1}".format(coords[0], " L ".join(coords[1:]))
+ for coords in all_coords])
+ else:
+ raise ValueError(f'Unhandled shapely object type {type(obj)}')
+
+ return (f'<path fill-rule="evenodd" fill="{fill_color}" opacity="{opacity}" stroke="{stroke_color}" '
+ f'stroke-width="{stroke_width}" d="{path}" />')
+
+ def save(self, margin:'unit'=5, scale:'px/unit'=10):
+ #specify margin in coordinate units
+ margin = 5
+
+ bboxes = [ list(obj.bounds) for obj, _style in self.objs ]
+ min_x = min( bbox[0] for bbox in bboxes ) - margin
+ min_y = min( bbox[1] for bbox in bboxes ) - margin
+ max_x = max( bbox[2] for bbox in bboxes ) + margin
+ max_y = max( bbox[3] for bbox in bboxes ) + margin
+
+ width = max_x - min_x
+ height = max_y - min_y
+
+ props = {
+ 'version': '1.1',
+ 'baseProfile': 'full',
+ 'width': '{width:.0f}px'.format(width = width*scale),
+ 'height': '{height:.0f}px'.format(height = height*scale),
+ 'viewBox': '%.1f,%.1f,%.1f,%.1f' % (min_x, min_y, width, height),
+ 'xmlns': 'http://www.w3.org/2000/svg',
+ 'xmlns:ev': 'http://www.w3.org/2001/xml-events',
+ 'xmlns:xlink': 'http://www.w3.org/1999/xlink'
+ }
+
+ self.f.write(textwrap.dedent(r'''
+ <?xml version="1.0" encoding="utf-8" ?>
+ <svg {attrs:s}>
+ {data}
+ </svg>
+ ''').format(
+ attrs = ' '.join(['{key:s}="{val:s}"'.format(key = key, val = props[key]) for key in props]),
+ data = '\n'.join(self.gen_svg(obj, *style) for obj, style in self.objs)
+ ).strip())
+
+def show_dialog(board):
+ dialog = MeshPluginMainDialog(board)
+ dialog.ShowModal()
+ return dialog