Class SvgProcessor

3d/scripts/svg_processor.py:50–330

Processes SVG files generated by OpenSCAD to prepare for laser cutting

class SvgProcessor(object):
    """
    Processes SVG files generated by OpenSCAD to prepare for laser cutting
    """

    def __init__(self, input_file):
        self.dom = minidom.parse(input_file)
        self.svg_node = self.dom.documentElement

    def set_dimensions(self, width, height):
        self.svg_node.attributes['width'].value = width
        self.svg_node.attributes['height'].value = height

    def set_viewbox(self, min_x, min_y, width, height):
        view_str = "{:.0f} {:.0f} {:.0f} {:.0f}".format(min_x, min_y, width, height)
        self.svg_node.attributes['viewBox'].value = view_str

    def get_viewbox(self):
        vb = self.svg_node.attributes['viewBox'].value.replace(',', '').split(' ')
        vb = [float(x) for x in vb]
        return tuple(vb)

    def apply_laser_cut_style(self):
        # Set fill and stroke for laser cutting
        for path in self.svg_node.getElementsByTagName('path'):
                SvgProcessor._apply_attributes(path, {
                    'fill': 'none',
                    'stroke': '#0000ff',
                    'stroke-width': '0.1',
                })

    def apply_laser_etch_style(self):
        # Set fill and stroke for laser etching
        for path in self.svg_node.getElementsByTagName('path'):
                SvgProcessor._apply_attributes(path, {
                    'fill': '#000000',
                    'stroke': 'none',
                })

    def apply_raster_render_style(self):
        # Set fill and stroke for rasterized rendering
        for path in self.svg_node.getElementsByTagName('path'):
                SvgProcessor._apply_attributes(path, {
                    'fill': 'none',
                    'stroke': '#000000',
                    'stroke-width': '0.2',
                })

    def import_paths(self, from_svg_processor):
        for path in from_svg_processor.svg_node.getElementsByTagName('path'):
            output_node = self.dom.importNode(path, True)
            self.svg_node.appendChild(output_node)

        vb = self.merge_viewbox(from_svg_processor.get_viewbox())
        self.set_viewbox(*vb)
        dimm = "{:.0f}mm"
        self.set_dimensions(dimm.format(vb[2]), dimm.format(vb[3]))