def __drawLink(self, vlink: VLink): """Draw a link.""" points = [] for i in vlink.points: vpoint = self.Points[i] if vpoint.type == 1 or vpoint.type == 2: coordinate = vpoint.c[0 if (vlink.name == vpoint.links[0]) else 1] x = coordinate[0] * self.zoom y = coordinate[1] * -self.zoom else: x = vpoint.cx * self.zoom y = vpoint.cy * -self.zoom points.append((x, y)) pen = QPen(vlink.color) pen.setWidth(self.linkWidth) self.painter.setPen(pen) brush = QColor(226, 219, 190) brush.setAlphaF(self.transparency) self.painter.setBrush(brush) #Rearrange: Put the nearest point to the next position. qpoints = convex_hull(points) if qpoints: self.painter.drawPolygon(*qpoints) self.painter.setBrush(Qt.NoBrush) if ((not self.showPointMark) or (vlink.name == 'ground') or (not qpoints)): return pen.setColor(Qt.darkGray) self.painter.setPen(pen) cenX = sum(p[0] for p in points) / len(points) cenY = sum(p[1] for p in points) / len(points) self.painter.drawText(QPointF(cenX, cenY), '[{}]'.format(vlink.name))
def __draw_link(self, vlink: VLink): """Draw a link.""" if vlink.name == 'ground' or (not vlink.points): return points = self.__points_pos(vlink) pen = QPen() # Rearrange: Put the nearest point to the next position. qpoints = convex_hull(points, as_qpoint=True) if (self.select_mode == SelectMode.Link and self.vlinks.index(vlink) in self.selections): pen.setWidth(self.link_width + 6) pen.setColor(Qt.black if self.monochrome else QColor(161, 16, 239)) self.painter.setPen(pen) self.painter.drawPolygon(*qpoints) pen.setWidth(self.link_width) pen.setColor(Qt.black if self.monochrome else QColor(*vlink.color)) self.painter.setPen(pen) brush = QColor(Qt.darkGray) if self.monochrome else QColor( 226, 219, 190) brush.setAlphaF(self.transparency) self.painter.setBrush(brush) self.painter.drawPolygon(*qpoints) self.painter.setBrush(Qt.NoBrush) if not self.show_point_mark: return pen.setColor(Qt.darkGray) self.painter.setPen(pen) p_count = len(points) cen_x = sum(p[0] for p in points) / p_count cen_y = sum(p[1] for p in points) / p_count self.painter.drawText(QRectF(cen_x - 50, cen_y - 50, 100, 100), Qt.AlignCenter, f'[{vlink.name}]')
def dxf_boundary(vpoints: Sequence[VPoint], radius: float, interval: float, version: str, file_name: str): """Create parts sketch in same file.""" vlinks = {} for i, vpoint in enumerate(vpoints): for link in vpoint.links: if link in vlinks: vlinks[link].append(i) else: vlinks[link] = [i] dwg = ezdxf.new(version) msp = dwg.modelspace() # Interval: Offset with x axis. interval += radius * 2 x_max = -interval # Draw link boundaries. for name in sorted(vlinks, key=lambda name: min(vpoints[p].cx for p in vlinks[name])): if name == 'ground': continue # Draw joint holes. x_min = min(vpoints[p].cx for p in vlinks[name]) centers = [(vpoints[p].cx if (interval is None) else x_max + interval + (vpoints[p].cx - x_min), vpoints[p].cy) for p in vlinks[name]] for coord in centers: msp.add_circle(coord, radius / 2) if interval is not None: x_max = max(coord[0] for coord in centers) # Sort the centers. centers_ch = convex_hull(centers) boundary = centers_ch.copy() for c in centers: if c not in centers_ch: centers_ch.append(c) centers = centers_ch # Draw boundary edges. boundary = boundaryloop(boundary, radius) for c1, c2 in boundary: msp.add_line((c1.x, c1.y), (c2.x, c2.y)) # Draw fillets. for i in range(len(boundary)): x, y = centers[i] c1 = boundary[i - 1][1] c2 = boundary[i][0] msp.add_arc(centers[i], radius, degrees(atan2(c1.y - y, c1.x - x)), degrees(atan2(c2.y - y, c2.x - x))) dwg.saveas(file_name)
def catch(link: VLink) -> bool: """Detection function for links. + Is polygon: Using Qt polygon geometry. + If just a line: Create a range for mouse detection. """ points = self.__points_pos(link) if len(points) > 2: polygon = QPolygonF(convex_hull(points, as_qpoint=True)) else: polygon = QPolygonF( convex_hull([(x + self.sr, y + self.sr) for x, y in points] + [(x - self.sr, y - self.sr) for x, y in points], as_qpoint=True)) if rect: return polygon.intersects( QPolygonF(self.selector.to_rect(self.zoom))) else: return polygon.containsPoint( QPointF(self.selector.x, -self.selector.y) * self.zoom, Qt.WindingFill)
def slvs_part(vpoints: List[VPoint], radius: float, file_name: str): """Generate a linkage sketch by specified radius.""" # Translate min_x = min(vpoint.cx for vpoint in vpoints) min_y = min(vpoint.cy for vpoint in vpoints) centers = [(vpoint.cx - min_x, vpoint.cy - min_y) for vpoint in vpoints] # Synchronous the point coordinates after using convex hull. centers_ch: List[_Coord] = convex_hull(centers) _boundary = centers_ch.copy() for c in centers: if c not in centers_ch: centers_ch.append(c) centers = centers_ch del vpoints, min_x, min_y # Frame (p1, p2, p3) -> ((p1, p2), (p3, p1), (p3, p2)) frame: List[_CoordsPair] = [tuple(Coordinate(*c) for c in centers[:2])] for c in centers[2:]: frame.append((frame[0][0], Coordinate(*c))) frame.append((frame[0][1], Coordinate(*c))) # Boundary boundary = boundaryloop(_boundary, radius) del _boundary # Writer object. writer = SlvsWriter() writer.script_group.pop() writer.group_normal(0x3, "boundary") # Add "Param". def add_param(edges: Sequence[_CoordsPair]): """Add param by pair of coordinates.""" for edge in edges: writer.param_num += 0x10 for coord in edge: writer.param_val(writer.param_num, coord.x) writer.param_num += 1 writer.param_val(writer.param_num, coord.y) writer.param_num += 2 writer.param_shift16() def arc_coords(index: int, _cx: float, _cy: float) -> Iterator[_Coord]: yield from ( (_cx, _cy), (boundary[index - 1][1].x, boundary[index - 1][1].y), (boundary[index][0].x, boundary[index][0].y), ) add_param(frame) add_param(boundary) # Circles for x, y in centers: writer.param_num += 0x10 writer.param_val(writer.param_num, x) writer.param_num += 1 writer.param_val(writer.param_num, y) # Shift to 0x40 writer.param_num += 0x2f writer.param_val(writer.param_num, radius / 2) writer.param_shift16() # Arc for i in range(len(boundary)): cx, cy = centers[i] writer.param_num += 0x10 for x, y in arc_coords(i, cx, cy): writer.param_val(writer.param_num, x) writer.param_num += 1 writer.param_val(writer.param_num, y) writer.param_num += 2 writer.param_shift16() # Group 2: point_count = len(centers) # The number of same points. point_num = [[] for _ in range(point_count)] # The number of same lines. line_num = [[] for _ in range(len(frame))] def segment_processing(edges: Sequence[_CoordsPair]): """Add edges to workplane. (No any constraint.)""" # Add "Request". for _ in range(len(edges)): writer.request_line(writer.request_num) writer.request_num += 1 def edges_is_frame() -> Iterator[int]: """Number code of frame.""" yield 0 yield 1 k = 2 while True: for code in (0, 1): yield code yield k k += 1 def edges_is_boundary() -> Iterator[int]: """Number code of boundary.""" k = 0 while True: yield k k += 1 k %= len(point_num) yield k # Add "Entity". if edges is frame: p_count = edges_is_frame() else: p_count = edges_is_boundary() for index, edge in enumerate(edges): writer.entity_line(writer.entity_num) for j, coord in enumerate(edge): writer.entity_num += 1 point_num[next(p_count)].append(writer.entity_num) writer.entity_point_2d(writer.entity_num, coord.x, coord.y) line_num[index].append(writer.entity_num) writer.entity_shift16() segment_processing(frame) center_num = [nums[0] for nums in point_num] # Add "Constraint". # Same point constraint. for p in point_num: for p_ in p[1:]: writer.constraint_point(writer.constraint_num, p[0], p_) writer.constraint_num += 1 for i, (n1, n2) in enumerate(line_num): p1, p2 = frame[i] writer.constraint_distance(writer.constraint_num, n1, n2, p1.distance(p2)) writer.constraint_num += 1 # Add "Constraint" of position. for i in range(2): c = frame[0][i] writer.constraint_fix(writer.constraint_num, point_num[i][0], c.x, c.y) if i == 1: writer.script_constraint.pop() writer.constraint_num += 1 else: writer.constraint_num += 2 # Group 3: writer.set_group(0x3) # The number of same points. point_num = [[] for _ in range(len(boundary))] # The number of same lines. line_num = [[] for _ in range(len(boundary))] # The number of circles. circles = [] segment_processing(boundary) def add_circle(index: int, _x: float, _y: float): """Add circle""" # Add "Request" writer.request_circle(writer.request_num) writer.request_num += 1 # Add "Entity" writer.entity_circle(writer.entity_num) circles.append(writer.entity_num) writer.entity_num += 1 writer.entity_point_2d(writer.entity_num, _x, _y) num = writer.entity_num # Shift to 0x20 writer.entity_num += 0x1f writer.entity_normal_2d(writer.entity_num, num) # Shift to 0x40 writer.entity_num += 0x20 writer.entity_distance(writer.entity_num, radius / 2) writer.entity_shift16() # Add "Constraint" for centers. writer.constraint_point(writer.constraint_num, num, center_num[index]) writer.constraint_num += 1 # Add "Constraint" for diameter. if index == 0: writer.constraint_diameter(writer.constraint_num, circles[-1], radius) else: writer.constraint_equal_radius(writer.constraint_num, circles[-1], circles[0]) writer.constraint_num += 1 def add_arc(index: int, _cx: float, _cy: float): """Add arc""" # Add "Request" writer.request_arc(writer.request_num) writer.request_num += 1 # Add "Entity" writer.entity_arc(writer.entity_num) circles.append(writer.entity_num) p3 = [] for ax, ay in arc_coords(index, _cx, _cy): writer.entity_num += 1 writer.entity_point_2d(writer.entity_num, ax, ay) p3.append(writer.entity_num) writer.entity_num += 0x3d writer.entity_normal_2d(writer.entity_num, p3[0]) writer.entity_shift16() # Add "Constraint" for three points. num1, num2 = point_num[index] if (num1 % 16) < (num2 % 16): num1, num2 = num2, num1 for j, num in enumerate(( center_num[index], num1, num2, )): writer.constraint_point(writer.constraint_num, p3[j], num) writer.constraint_num += 1 # Add "Constraint" for diameter. if index == 0: writer.constraint_diameter(writer.constraint_num, circles[-1], radius * 2) else: writer.constraint_equal_radius(writer.constraint_num, circles[-1], circles[0]) writer.constraint_num += 1 # Add "Constraint" for become tangent line. for j, num in enumerate((num1 - num1 % 16, num2 - num2 % 16)): r = j == 1 writer.constraint_arc_line_tangent(writer.constraint_num, circles[-1], num, reversed=r) writer.constraint_num += 1 for i, (x, y) in enumerate(centers): add_circle(i, x, y) circles.clear() for i in range(len(boundary)): x, y = centers[i] add_arc(i, x, y) # Write file. writer.save(file_name)