812 lines
28 KiB
Python
812 lines
28 KiB
Python
# ##########################################################
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# FlatCAM: 2D Post-processing for Manufacturing #
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# http://flatcam.org #
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# File Author: Dennis Hayrullin #
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# Date: 2/5/2016 #
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# MIT Licence #
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# ##########################################################
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from vispy.visuals import CompoundVisual, LineVisual, MeshVisual, TextVisual, MarkersVisual
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from vispy.scene.visuals import VisualNode, generate_docstring, visuals
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from vispy.gloo import set_state
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from vispy.color import Color
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from shapely.geometry import Polygon, LineString, LinearRing
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import threading
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import numpy as np
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from appGUI.VisPyTesselators import GLUTess
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class FlatCAMLineVisual(LineVisual):
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def __init__(self, pos=None, color=(0.5, 0.5, 0.5, 1), width=1, connect='strip', method='gl', antialias=False):
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LineVisual.__init__(self, pos=pos, color=color, width=width, connect=connect,
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method=method, antialias=True)
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def clear_data(self):
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self._bounds = None
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self._pos = None
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self._changed['pos'] = True
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self.update()
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def _update_shape_buffers(data, triangulation='glu'):
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"""
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Translates Shapely geometry to internal buffers for speedup redraws
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:param data: dict
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Input shape data
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:param triangulation: str
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Triangulation engine
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"""
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mesh_vertices = [] # Vertices for mesh
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mesh_tris = [] # Faces for mesh
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mesh_colors = [] # Face colors
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line_pts = [] # Vertices for line
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line_colors = [] # Line color
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geo, color, face_color, tolerance = data['geometry'], data['color'], data['face_color'], data['tolerance']
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if geo is not None and not geo.is_empty:
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simplified_geo = geo.simplify(tolerance) if tolerance else geo # Simplified shape
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pts = [] # Shape line points
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tri_pts = [] # Mesh vertices
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tri_tris = [] # Mesh faces
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if type(geo) == LineString:
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# Prepare lines
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pts = _linestring_to_segments(list(simplified_geo.coords))
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elif type(geo) == LinearRing:
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# Prepare lines
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pts = _linearring_to_segments(list(simplified_geo.coords))
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elif type(geo) == Polygon:
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# Prepare polygon faces
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if face_color is not None:
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if triangulation == 'glu':
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gt = GLUTess()
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tri_tris, tri_pts = gt.triangulate(simplified_geo)
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else:
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print("Triangulation type '%s' isn't implemented. Drawing only edges." % triangulation)
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# Prepare polygon edges
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if color is not None:
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pts = _linearring_to_segments(list(simplified_geo.exterior.coords))
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for ints in simplified_geo.interiors:
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pts += _linearring_to_segments(list(ints.coords))
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# Appending data for mesh
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if len(tri_pts) > 0 and len(tri_tris) > 0:
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mesh_tris += tri_tris
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mesh_vertices += tri_pts
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face_color_rgba = Color(face_color).rgba
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# mesh_colors += [face_color_rgba] * (len(tri_tris) // 3)
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mesh_colors += [face_color_rgba for __ in range(len(tri_tris) // 3)]
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# Appending data for line
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if len(pts) > 0:
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line_pts += pts
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colo_rgba = Color(color).rgba
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# line_colors += [colo_rgba] * len(pts)
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line_colors += [colo_rgba for __ in range(len(pts))]
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# Store buffers
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data['line_pts'] = line_pts
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data['line_colors'] = line_colors
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data['mesh_vertices'] = mesh_vertices
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data['mesh_tris'] = mesh_tris
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data['mesh_colors'] = mesh_colors
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# Clear shapely geometry
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del data['geometry']
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return data
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def _linearring_to_segments(arr):
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# Close linear ring
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"""
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Translates linear ring to line segments
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:param arr: numpy.array
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Array of linear ring vertices
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:return: numpy.array
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Line segments
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"""
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if arr[0] != arr[-1]:
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arr.append(arr[0])
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return _linestring_to_segments(arr)
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def _linestring_to_segments(arr):
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"""
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Translates line strip to segments
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:param arr: numpy.array
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Array of line strip vertices
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:return: numpy.array
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Line segments
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"""
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return [arr[i // 2] for i in range(0, len(arr) * 2)][1:-1]
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class ShapeGroup(object):
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def __init__(self, collection):
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"""
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Represents group of shapes in collection
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:param collection: ShapeCollection
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Collection to work with
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"""
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self._collection = collection
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self._indexes = []
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self._visible = True
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self._color = None
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def add(self, **kwargs):
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"""
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Adds shape to collection and store index in group
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:param kwargs: keyword arguments
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Arguments for ShapeCollection.add function
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"""
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key = self._collection.add(**kwargs)
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self._indexes.append(key)
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return key
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def remove(self, idx, update=False):
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self._indexes.remove(idx)
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self._collection.remove(idx, False)
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if update:
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self._collection.redraw([]) # Skip waiting results
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def clear(self, update=False):
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"""
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Removes group shapes from collection, clear indexes
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:param update: bool
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Set True to redraw collection
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"""
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for i in self._indexes:
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self._collection.remove(i, False)
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del self._indexes[:]
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if update:
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self._collection.redraw([]) # Skip waiting results
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def redraw(self, update_colors=None):
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"""
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Redraws shape collection
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"""
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if update_colors:
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self._collection.redraw(self._indexes, update_colors=update_colors)
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else:
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self._collection.redraw(self._indexes)
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@property
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def visible(self):
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"""
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Visibility of group
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:return: bool
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"""
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return self._visible
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@visible.setter
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def visible(self, value):
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"""
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Visibility of group
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:param value: bool
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"""
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self._visible = value
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for i in self._indexes:
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self._collection.data[i]['visible'] = value
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self._collection.redraw([])
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def update_visibility(self, state, indexes=None):
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if indexes:
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for i in indexes:
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if i in self._indexes:
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self._collection.data[i]['visible'] = state
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else:
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for i in self._indexes:
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self._collection.data[i]['visible'] = state
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self._collection.redraw([])
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class ShapeCollectionVisual(CompoundVisual):
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def __init__(self, linewidth=1, triangulation='vispy', layers=3, pool=None, **kwargs):
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"""
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Represents collection of shapes to draw on VisPy scene
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:param linewidth: float
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Width of lines/edges
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:param triangulation: str
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Triangulation method used for polygons translation
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'vispy' - VisPy lib triangulation
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'gpc' - Polygon2 lib
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:param layers: int
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Layers count
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Each layer adds 2 visuals on VisPy scene. Be careful: more layers cause less fps
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:param kwargs:
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"""
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self.data = {}
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self.last_key = -1
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# Thread locks
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self.key_lock = threading.Lock()
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self.results_lock = threading.Lock()
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self.update_lock = threading.Lock()
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# Process pool
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self.pool = pool
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self.results = {}
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self._meshes = [MeshVisual() for _ in range(0, layers)]
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# self._lines = [LineVisual(antialias=True) for _ in range(0, layers)]
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self._lines = [FlatCAMLineVisual(antialias=True) for _ in range(0, layers)]
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self._line_width = linewidth
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self._triangulation = triangulation
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visuals_ = [self._lines[i // 2] if i % 2 else self._meshes[i // 2] for i in range(0, layers * 2)]
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CompoundVisual.__init__(self, visuals_, **kwargs)
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for m in self._meshes:
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pass
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m.set_gl_state(polygon_offset_fill=True, polygon_offset=(1, 1), cull_face=False)
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for lne in self._lines:
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pass
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lne.set_gl_state(blend=True)
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self.freeze()
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def add(self, shape=None, color=None, face_color=None, alpha=None, visible=True,
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update=False, layer=1, tolerance=0.01, linewidth=None):
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"""
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Adds shape to collection
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:return:
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:param shape: shapely.geometry
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Shapely geometry object
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:param color: str, tuple
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Line/edge color
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:param face_color: str, tuple
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Polygon face color
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:param alpha: str
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Polygon transparency
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:param visible: bool
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Shape visibility
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:param update: bool
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Set True to redraw collection
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:param layer: int
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Layer number. 0 - lowest.
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:param tolerance: float
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Geometry simplifying tolerance
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:param linewidth: int
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Width of the line
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:return: int
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Index of shape
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"""
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# Get new key
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self.key_lock.acquire(True)
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self.last_key += 1
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key = self.last_key
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self.key_lock.release()
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# Prepare data for translation
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self.data[key] = {'geometry': shape, 'color': color, 'alpha': alpha, 'face_color': face_color,
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'visible': visible, 'layer': layer, 'tolerance': tolerance}
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if linewidth:
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self._line_width = linewidth
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# Add data to process pool if pool exists
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try:
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self.results[key] = self.pool.map_async(_update_shape_buffers, [self.data[key]])
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except Exception:
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self.data[key] = _update_shape_buffers(self.data[key])
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if update:
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self.redraw() # redraw() waits for pool process end
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return key
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def remove(self, key, update=False):
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"""
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Removes shape from collection
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:param key: int
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Shape index to remove
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:param update:
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Set True to redraw collection
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"""
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# Remove process result
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self.results_lock.acquire(True)
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if key in list(self.results.copy().keys()):
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del self.results[key]
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self.results_lock.release()
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# Remove data
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del self.data[key]
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if update:
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self.__update()
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def clear(self, update=False):
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"""
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Removes all shapes from collection
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:param update: bool
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Set True to redraw collection
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"""
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self.data.clear()
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if update:
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self.__update()
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def update_visibility(self, state: bool, indexes=None) -> None:
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# Lock sub-visuals updates
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self.update_lock.acquire(True)
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if indexes is None:
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for k, data in list(self.data.items()):
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self.data[k]['visible'] = state
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else:
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for k, data in list(self.data.items()):
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if k in indexes:
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self.data[k]['visible'] = state
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self.update_lock.release()
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def update_color(self, new_mesh_color=None, new_line_color=None, indexes=None):
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if new_mesh_color is None and new_line_color is None:
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return
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if not self.data:
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return
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# if a new color is empty string then make it None so it will not be updated
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# if a new color is valid then transform it here in a format palatable
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mesh_color_rgba = None
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line_color_rgba = None
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if new_mesh_color:
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if new_mesh_color != '':
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mesh_color_rgba = Color(new_mesh_color).rgba
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else:
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new_mesh_color = None
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if new_line_color:
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if new_line_color != '':
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line_color_rgba = Color(new_line_color).rgba
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else:
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new_line_color = None
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mesh_colors = [[] for _ in range(0, len(self._meshes))] # Face colors
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line_colors = [[] for _ in range(0, len(self._meshes))] # Line colors
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line_pts = [[] for _ in range(0, len(self._lines))] # Vertices for line
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# Lock sub-visuals updates
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self.update_lock.acquire(True)
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# Merge shapes buffers
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if indexes is None:
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for k, data in list(self.data.items()):
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if data['visible'] and 'line_pts' in data:
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if new_mesh_color and new_mesh_color != '':
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dim_mesh_tris = (len(data['mesh_tris']) // 3)
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if dim_mesh_tris != 0:
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try:
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mesh_colors[data['layer']] += [mesh_color_rgba] * dim_mesh_tris
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self.data[k]['face_color'] = new_mesh_color
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data['mesh_colors'] = [mesh_color_rgba for __ in range(len(data['mesh_colors']))]
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except Exception as e:
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print("VisPyVisuals.ShapeCollectionVisual.update_color(). "
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"Create mesh colors --> Data error. %s" % str(e))
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if new_line_color and new_line_color != '':
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dim_line_pts = (len(data['line_pts']))
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if dim_line_pts != 0:
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try:
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line_pts[data['layer']] += data['line_pts']
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line_colors[data['layer']] += [line_color_rgba] * dim_line_pts
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self.data[k]['color'] = new_line_color
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data['line_colors'] = [mesh_color_rgba for __ in range(len(data['line_colors']))]
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except Exception as e:
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print("VisPyVisuals.ShapeCollectionVisual.update_color(). "
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"Create line colors --> Data error. %s" % str(e))
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else:
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for k, data in list(self.data.items()):
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if data['visible'] and 'line_pts' in data:
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dim_mesh_tris = (len(data['mesh_tris']) // 3)
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dim_line_pts = (len(data['line_pts']))
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if k in indexes:
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if new_mesh_color and new_mesh_color != '':
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if dim_mesh_tris != 0:
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try:
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mesh_colors[data['layer']] += [mesh_color_rgba] * dim_mesh_tris
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self.data[k]['face_color'] = new_mesh_color
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data['mesh_colors'] = [mesh_color_rgba for __ in range(len(data['mesh_colors']))]
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except Exception as e:
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print("VisPyVisuals.ShapeCollectionVisual.update_color(). "
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"Create mesh colors --> Data error. %s" % str(e))
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if new_line_color and new_line_color != '':
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if dim_line_pts != 0:
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try:
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line_pts[data['layer']] += data['line_pts']
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line_colors[data['layer']] += [line_color_rgba] * dim_line_pts
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self.data[k]['color'] = new_line_color
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data['line_colors'] = [mesh_color_rgba for __ in range(len(data['line_colors']))]
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except Exception as e:
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print("VisPyVisuals.ShapeCollectionVisual.update_color(). "
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"Create line colors --> Data error. %s" % str(e))
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else:
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if dim_mesh_tris != 0:
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try:
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mesh_colors[data['layer']] += [Color(data['face_color']).rgba] * dim_mesh_tris
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except Exception as e:
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print("VisPyVisuals.ShapeCollectionVisual.update_color(). "
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"Create mesh colors --> Data error. %s" % str(e))
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if dim_line_pts != 0:
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try:
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line_pts[data['layer']] += data['line_pts']
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line_colors[data['layer']] += [Color(data['color']).rgba] * dim_line_pts
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except Exception as e:
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print("VisPyVisuals.ShapeCollectionVisual.update_color(). "
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"Create line colors --> Data error. %s" % str(e))
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# Updating meshes
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if new_mesh_color and new_mesh_color != '':
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for i, mesh in enumerate(self._meshes):
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if mesh_colors[i]:
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try:
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mesh._meshdata.set_face_colors(colors=np.asarray(mesh_colors[i]))
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mesh.mesh_data_changed()
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except Exception as e:
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print("VisPyVisuals.ShapeCollectionVisual.update_color(). "
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"Apply mesh colors --> Data error. %s" % str(e))
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# Updating lines
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if new_line_color and new_line_color != '':
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for i, line in enumerate(self._lines):
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if len(line_pts[i]) > 0:
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try:
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line._color = np.asarray(line_colors[i])
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line._changed['color'] = True
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line.update()
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except Exception as e:
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print("VisPyVisuals.ShapeCollectionVisual.update_color(). "
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"Apply line colors --> Data error. %s" % str(e))
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else:
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line.clear_data()
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self.update_lock.release()
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def __update(self):
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"""
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Merges internal buffers, sets data to visuals, redraws collection on scene
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"""
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mesh_vertices = [[] for _ in range(0, len(self._meshes))] # Vertices for mesh
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mesh_tris = [[] for _ in range(0, len(self._meshes))] # Faces for mesh
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mesh_colors = [[] for _ in range(0, len(self._meshes))] # Face colors
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line_pts = [[] for _ in range(0, len(self._lines))] # Vertices for line
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line_colors = [[] for _ in range(0, len(self._lines))] # Line color
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# Lock sub-visuals updates
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self.update_lock.acquire(True)
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# Merge shapes buffers
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for data in list(self.data.values()):
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if data['visible'] and 'line_pts' in data:
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try:
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line_pts[data['layer']] += data['line_pts']
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line_colors[data['layer']] += data['line_colors']
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mesh_tris[data['layer']] += [x + len(mesh_vertices[data['layer']]) for x in data['mesh_tris']]
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mesh_vertices[data['layer']] += data['mesh_vertices']
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mesh_colors[data['layer']] += data['mesh_colors']
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except Exception as e:
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print("VisPyVisuals.ShapeCollectionVisual._update() --> Data error. %s" % str(e))
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# Updating meshes
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for i, mesh in enumerate(self._meshes):
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if len(mesh_vertices[i]) > 0:
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set_state(polygon_offset_fill=False)
|
|
faces_array = np.asarray(mesh_tris[i], dtype=np.uint32)
|
|
mesh.set_data(
|
|
vertices=np.asarray(mesh_vertices[i]),
|
|
faces=faces_array.reshape((-1, 3)),
|
|
face_colors=np.asarray(mesh_colors[i])
|
|
)
|
|
else:
|
|
mesh.set_data()
|
|
|
|
mesh._bounds_changed()
|
|
|
|
# Updating lines
|
|
for i, line in enumerate(self._lines):
|
|
if len(line_pts[i]) > 0:
|
|
line.set_data(
|
|
pos=np.asarray(line_pts[i]),
|
|
color=np.asarray(line_colors[i]),
|
|
width=self._line_width,
|
|
connect='segments')
|
|
else:
|
|
line.clear_data()
|
|
|
|
line._bounds_changed()
|
|
|
|
self._bounds_changed()
|
|
self.update_lock.release()
|
|
|
|
def redraw(self, indexes=None, update_colors=None):
|
|
"""
|
|
Redraws collection
|
|
:param indexes: list
|
|
Shape indexes to get from process pool
|
|
:param update_colors:
|
|
"""
|
|
# Only one thread can update data
|
|
self.results_lock.acquire(True)
|
|
|
|
for i in list(self.data.keys()) if not indexes else indexes:
|
|
if i in list(self.results.keys()):
|
|
try:
|
|
self.results[i].wait() # Wait for process results
|
|
if i in self.data:
|
|
self.data[i] = self.results[i].get()[0] # Store translated data
|
|
del self.results[i]
|
|
except Exception as e:
|
|
print("VisPyVisuals.ShapeCollectionVisual.redraw() --> Data error = %s. Indexes = %s" %
|
|
(str(e), str(indexes)))
|
|
|
|
self.results_lock.release()
|
|
|
|
if update_colors is None or update_colors is False:
|
|
self.__update()
|
|
else:
|
|
try:
|
|
self.update_color(
|
|
new_mesh_color=update_colors[0],
|
|
new_line_color=update_colors[1],
|
|
indexes=indexes
|
|
)
|
|
except Exception as e:
|
|
print("VisPyVisuals.ShapeCollectionVisual.redraw() --> Update colors error = %s." % str(e))
|
|
|
|
def lock_updates(self):
|
|
self.update_lock.acquire(True)
|
|
|
|
def unlock_updates(self):
|
|
self.update_lock.release()
|
|
|
|
|
|
class TextGroup(object):
|
|
def __init__(self, collection):
|
|
self._collection = collection
|
|
self._index = None
|
|
self._visible = None
|
|
|
|
def set(self, **kwargs):
|
|
"""
|
|
Adds text to collection and store index
|
|
:param kwargs: keyword arguments
|
|
Arguments for TextCollection.add function
|
|
"""
|
|
self._index = self._collection.add(**kwargs)
|
|
|
|
def clear(self, update=False):
|
|
"""
|
|
Removes text from collection, clear index
|
|
:param update: bool
|
|
Set True to redraw collection
|
|
"""
|
|
|
|
if self._index is not None:
|
|
self._collection.remove(self._index, False)
|
|
self._index = None
|
|
|
|
if update:
|
|
self._collection.redraw()
|
|
|
|
def redraw(self):
|
|
"""
|
|
Redraws text collection
|
|
"""
|
|
self._collection.redraw()
|
|
|
|
@property
|
|
def visible(self):
|
|
"""
|
|
Visibility of group
|
|
:return: bool
|
|
"""
|
|
return self._visible
|
|
|
|
@visible.setter
|
|
def visible(self, value):
|
|
"""
|
|
Visibility of group
|
|
:param value: bool
|
|
"""
|
|
self._visible = value
|
|
if self._index:
|
|
try:
|
|
self._collection.data[self._index]['visible'] = value
|
|
except KeyError as e:
|
|
print("VisPyVisuals.TextGroup.visible --> KeyError --> %s" % str(e))
|
|
pass
|
|
self._collection.redraw()
|
|
|
|
|
|
class TextCollectionVisual(TextVisual):
|
|
|
|
def __init__(self, **kwargs):
|
|
"""
|
|
Represents collection of shapes to draw on VisPy scene
|
|
:param kwargs: keyword arguments
|
|
Arguments to pass for TextVisual
|
|
"""
|
|
self.data = {}
|
|
self.last_key = -1
|
|
self.lock = threading.Lock()
|
|
self.method = 'gpu'
|
|
super(TextCollectionVisual, self).__init__(**kwargs)
|
|
|
|
self.freeze()
|
|
|
|
def add(self, text, pos, visible=True, update=True, font_size=9, color='black'):
|
|
"""
|
|
Adds array of text to collection
|
|
:param text: list
|
|
Array of strings ['str1', 'str2', ... ]
|
|
:param pos: list
|
|
Array of string positions [(0, 0), (10, 10), ... ]
|
|
:param visible: bool
|
|
| Set True to make it visible
|
|
:param update: bool
|
|
Set True to redraw collection
|
|
:param font_size: int
|
|
Set font size to redraw collection
|
|
:param color: string
|
|
Set font color to redraw collection
|
|
:return: int
|
|
Index of array
|
|
"""
|
|
# Get new key
|
|
self.lock.acquire(True)
|
|
self.last_key += 1
|
|
key = self.last_key
|
|
self.lock.release()
|
|
|
|
# Prepare data for translation
|
|
self.data[key] = {'text': text, 'pos': pos, 'visible': visible, 'font_size': font_size, 'color': color}
|
|
|
|
if update:
|
|
self.redraw()
|
|
|
|
return key
|
|
|
|
def remove(self, key, update=False):
|
|
"""
|
|
Removes shape from collection
|
|
:param key: int
|
|
Shape index to remove
|
|
:param update:
|
|
Set True to redraw collection
|
|
"""
|
|
del self.data[key]
|
|
|
|
if update:
|
|
self.__update()
|
|
|
|
def clear(self, update=False):
|
|
"""
|
|
Removes all shapes from collection
|
|
:param update: bool
|
|
Set True to redraw collection
|
|
"""
|
|
self.data.clear()
|
|
if update:
|
|
self.__update()
|
|
|
|
def __update(self):
|
|
"""
|
|
Merges internal buffers, sets data to visuals, redraws collection on scene
|
|
"""
|
|
labels = []
|
|
pos = []
|
|
font_s = 9
|
|
color = 'black'
|
|
|
|
# Merge buffers
|
|
for data in list(self.data.values()):
|
|
if data['visible']:
|
|
try:
|
|
labels += data['text']
|
|
pos += data['pos']
|
|
font_s = data['font_size']
|
|
color = data['color']
|
|
except Exception as e:
|
|
print("VisPyVisuals.TextCollectionVisual._update() --> Data error. %s" % str(e))
|
|
|
|
# Updating text
|
|
if len(labels) > 0:
|
|
self.text = labels
|
|
self.pos = pos
|
|
self.font_size = font_s
|
|
self.color = color
|
|
else:
|
|
self.text = None
|
|
self.pos = (0, 0)
|
|
|
|
self._bounds_changed()
|
|
|
|
def redraw(self):
|
|
"""
|
|
Redraws collection
|
|
"""
|
|
self.__update()
|
|
|
|
|
|
# Add 'enabled' property to visual nodes
|
|
def create_fast_node(subclass):
|
|
# Create a new subclass of Node.
|
|
|
|
# Decide on new class name
|
|
clsname = subclass.__name__
|
|
if not (clsname.endswith('Visual') and
|
|
issubclass(subclass, visuals.BaseVisual)):
|
|
raise RuntimeError('Class "%s" must end with Visual, and must '
|
|
'subclass BaseVisual' % clsname)
|
|
clsname = clsname[:-6]
|
|
|
|
# Generate new docstring based on visual docstring
|
|
try:
|
|
doc = generate_docstring(subclass, clsname)
|
|
except Exception:
|
|
# If parsing fails, just return the original Visual docstring
|
|
doc = subclass.__doc__
|
|
|
|
# New __init__ method
|
|
def __init__(self, *args, **kwargs):
|
|
parent = kwargs.pop('parent', None)
|
|
name = kwargs.pop('name', None)
|
|
self.name = name # to allow __str__ before Node.__init__
|
|
self._visual_superclass = subclass
|
|
|
|
# parent: property,
|
|
# _parent: attribute of Node class
|
|
# __parent: attribute of fast_node class
|
|
self.__parent = parent
|
|
self._enabled = False
|
|
|
|
subclass.__init__(self, *args, **kwargs)
|
|
self.unfreeze()
|
|
VisualNode.__init__(self, parent=parent, name=name)
|
|
self.freeze()
|
|
|
|
# Create new class
|
|
cls = type(clsname, (VisualNode, subclass),
|
|
{'__init__': __init__, '__doc__': doc})
|
|
|
|
# 'Enabled' property clears/restores 'parent' property of Node class
|
|
# Scene will be painted quicker than when using 'visible' property
|
|
def get_enabled(self):
|
|
return self._enabled
|
|
|
|
def set_enabled(self, enabled):
|
|
if enabled:
|
|
self.parent = self.__parent # Restore parent
|
|
else:
|
|
if self.parent: # Store parent
|
|
self.__parent = self.parent
|
|
self.parent = None
|
|
|
|
cls.enabled = property(get_enabled, set_enabled)
|
|
|
|
return cls
|
|
|
|
|
|
ShapeCollection = create_fast_node(ShapeCollectionVisual)
|
|
TextCollection = create_fast_node(TextCollectionVisual)
|
|
Cursor = create_fast_node(MarkersVisual)
|