René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ScadInterface","articleBody":"```python\r\n#scad_interface.py\r\nfrom .solidpython import OpenSCADObject\r\nclass ConstantOpenSCADObject(OpenSCADObject):\r\n    def __init__(self, code):\r\n        super().__init__(\"not valid openscad code !?!?!\", {})\r\n        self.code = code\r\n\r\n    def _render(self, render_holes=42):\r\n        return self.code\r\n\r\nclass ScadInterface:\r\n    def __init__(self):\r\n        self.header = ''\r\n\r\n    def register_customizer_var(self, name, value, options=''):\r\n        self.header += f'{name} = {value}; //{options}\\n'\r\n\r\n    def set_global_var(self, name, value):\r\n        self.header += f'{name} = {value};\\n'\r\n\r\n    def get_header_str(self):\r\n        return self.header\r\n\r\n    def register_font(self, filename):\r\n        self.header += f'use \u003c{filename}\u003e\\n'\r\n\r\n    @staticmethod\r\n    def get(name):\r\n        return self.inline(name)\r\n\r\n    @staticmethod\r\n    def inline(code):\r\n        return scad_inline(code)\r\n\r\ndef scad_inline(code):\r\n    return OpenSCADConstant(code)\r\n\r\n#scad_render\r\ndef scad_render(root, file_header = '', scad_interface=None):\r\n    [...]\r\n    if scad_interface != None:\r\n        file_header += scad_interface.get_header_str()\r\n\r\n    return file_header + includes + scad_body \\\r\n                       + extensions_footer_str\r\n\r\n```\r\n\r\nThese 50 lines are able to close #180, #178, #165 and #61.\r\n\r\nIf possible I would **not** let OpenSCADConstant inherit from OpenSCADObject and use duck typing instead. But since the master is full of \"typing-stuff\" I'm afraid it'll crash it.\r\n\r\nExample usage of the Interface:\r\n[customizer support](https://github.com/jeff-dh/SolidPython/blob/exp_solid/solid/examples/10-customizer.py)\r\n[fonts](https://github.com/jeff-dh/SolidPython/blob/exp_solid/solid/examples/11-fonts.py)\r\n[animation](https://github.com/jeff-dh/SolidPython/blob/exp_solid/solid/examples/12-animation.py)\r\n\r\nThis can also be used to set global `$fn, $fa, $fs`.\r\n\r\nAnd I guess it would make the `header` parameter for `scad_render` obsolete, right?\r\nAny thing else you would like to *inject* into the header can be done trough the `ScadInterface`.","author":{"url":"https://github.com/jeff-dh","@type":"Person","name":"jeff-dh"},"datePublished":"2021-06-01T22:50:45.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":11},"url":"https://github.com/181/SolidPython/issues/181"}