Class TextExpression

vispy/visuals/shaders/expression.py:17–50

Plain GLSL text to insert inline

class TextExpression(Expression):
    """Plain GLSL text to insert inline"""

    def __init__(self, text):
        super(TextExpression, self).__init__()
        if not isinstance(text, str):
            raise TypeError("Argument must be string.")
        self._text = text

    def __repr__(self):
        return '<TextExpression %r for at 0x%x>' % (self.text, id(self))

    def expression(self, names=None):
        return self._text

    @property
    def text(self):
        return self._text

    @text.setter
    def text(self, t):
        self._text = t
        self.changed()

    def __eq__(self, a):
        if isinstance(a, TextExpression):
            return a._text == self._text
        elif isinstance(a, str):
            return a == self._text
        else:
            return False

    def __hash__(self):
        return self._text.__hash__()


class FunctionCall(Expression):