add text, circle, ring geometry

[shensquared]

the Ring and Circle geometries were added back in summer and they do load successfully. The new Text is just mimicking that modification.

[rdeits]

Cool! Is this still giving the same error you mentioned in #28 ?

[shensquared]

yes, this is what's giving me the missing uuid error

[rdeits]

What's the full error message?

[shensquared]

close this PR as we are attempting a different approach in meshcat-dev/meshcat#43

[gnthibault]

@shensquared sorry to bring this again, but where can I find examples of how to use either text, circles or plane in meshcat python ? Is there a generic class that can be used to create those geometries ?

EDIT: ok somehow I found my way out:

class Circle(Geometry):
    """
    from https://threejs.org/docs/#api/en/geometries/RingGeometry
    """
    def __init__(self, radius, nb_segment=20):
        """
        innerRadius — Default is 0.5.
        outerRadius — Default is 1.
        thetaSegments — Number of segments. A higher number means the ring will be more round. Minimum is 3. Default is 8.
        phiSegments — Minimum is 1. Default is 1.
        thetaStart — Starting angle. Default is 0.
        thetaLength — Central angle. Default is Math.PI * 2.
        """
        Geometry.__init__(self)
        self.innerRadius = radius
        self.outerRadius = radius
        self.thetaSegments = nb_segment
        self.phiSegments = 1
        self.thetaStart = 0
        self.thetaLength = 2*np.pi

    def lower(self, object_data):
        return {
            u"uuid": self.uuid,
            u"type": u"RingGeometry",
            u"innerRadius": self.innerRadius,
            u"outerRadius": self.outerRadius,
            u"thetaSegments": self.thetaSegments,
            u"phiSegments": self.phiSegments,
            u"thetaStart": self.thetaStart,
            u"thetaLength": self.thetaLength
        }