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102 lines
3.2 KiB
Python
102 lines
3.2 KiB
Python
############################################################
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# FlatCAM: 2D Post-processing for Manufacturing #
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# http://caram.cl/software/flatcam #
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# Author: Juan Pablo Caram (c) #
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# Date: 2/5/2014 #
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# MIT Licence #
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############################################################
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from PyQt4 import QtCore
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import logging
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from VisPyCanvas import VisPyCanvas
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from VisPyVisuals import ShapeGroup, ShapeCollection
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from vispy.scene.visuals import Markers, Text
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import numpy as np
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from vispy.geometry import Rect
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import multiprocessing
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log = logging.getLogger('base')
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class PlotCanvas(QtCore.QObject):
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"""
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Class handling the plotting area in the application.
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"""
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def __init__(self, container, app):
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"""
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The constructor configures the Matplotlib figure that
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will contain all plots, creates the base axes and connects
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events to the plotting area.
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:param container: The parent container in which to draw plots.
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:rtype: PlotCanvas
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"""
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super(PlotCanvas, self).__init__()
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self.app = app
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# Options
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self.x_margin = 15 # pixels
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self.y_margin = 25 # Pixels
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# Parent container
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self.container = container
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# Attach to parent
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self.vispy_canvas = VisPyCanvas()
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self.vispy_canvas.create_native()
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self.vispy_canvas.native.setParent(self.app.ui)
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self.container.addWidget(self.vispy_canvas.native)
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self.shape_collection = self.new_shape_collection(processes=multiprocessing.cpu_count())
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self.shape_collection.parent = self.vispy_canvas.view.scene
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def vis_connect(self, event_name, callback):
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return getattr(self.vispy_canvas.events, event_name).connect(callback)
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def vis_disconnect(self, event_name, callback):
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getattr(self.vispy_canvas.events, event_name).disconnect(callback)
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def zoom(self, factor, center=None):
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"""
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Zooms the plot by factor around a given
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center point. Takes care of re-drawing.
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:param factor: Number by which to scale the plot.
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:type factor: float
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:param center: Coordinates [x, y] of the point around which to scale the plot.
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:type center: list
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:return: None
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"""
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self.vispy_canvas.view.camera.zoom(factor, center)
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def new_shape_group(self):
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return ShapeGroup(self.shape_collection) # TODO: Make local shape collection
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def new_shape_collection(self, **kwargs):
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return ShapeCollection(**kwargs)
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def new_cursor(self):
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return Markers(pos=np.empty((0, 2)))
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def new_annotation(self):
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return Text(parent=self.vispy_canvas.view.scene)
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def fit_view(self, rect=None):
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if not rect:
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rect = Rect(0, 0, 10, 10)
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try:
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rect.left, rect.right = self.shape_collection.bounds(axis=0)
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rect.bottom, rect.top = self.shape_collection.bounds(axis=1)
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except TypeError:
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pass
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self.vispy_canvas.view.camera.rect = rect
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def clear(self):
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pass
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