def __init__(self, max_r):
self.max_r = max_r
format = GeomVertexFormat.getV3c4()
vdata = GeomVertexData('point', format, Geom.UHDynamic)
self._pos_writer = GeomVertexWriter(vdata, 'vertex')
self._color_writer = GeomVertexWriter(vdata, 'color')
line_num = 60
vdata.setNumRows(line_num)
angles = np.linspace(0, np.pi * 2 - np.pi * 2 / line_num, line_num)
other_rgba = (0., 0., 0.3, 0.1)
other2_rgba = (0.1, 0.1, 0.4, 0.4)
axis_rgba = (0.2, 0.2, 0.5, 1.0)
max_r = 250
for indx, angle in enumerate(angles):
if indx % 5 == 0:
rgba = axis_rgba
else:
rgba = other_rgba
self._pos_writer.addData3d(0, 0, 0.)
self._color_writer.addData4f(rgba[0], rgba[1], rgba[2], rgba[3])
self._pos_writer.addData3d(max_r * np.sin(angle),
max_r * np.cos(angle), 0.)
self._color_writer.addData4f(rgba[0], rgba[1], rgba[2], rgba[3])
grnd_prmtv = GeomLines(Geom.UHStatic)
grnd_prmtv.addConsecutiveVertices(0, 2 * line_num)
grnd_prmtv.closePrimitive()
ground_geom = Geom(vdata)
ground_geom.addPrimitive(grnd_prmtv)
snode = GeomNode('ground_lines')
snode.addGeom(ground_geom)
self.points_node = base.render.attachNewNode(snode)
self.points_node.setTwoSided(True)
for rad in range(int(max_r)):
color = axis_rgba
pp = makeArc(angleDegrees=360,
numSteps=160,
scale=rad,
color=color)
tn = TextNode('dd')
tn.setText(str(rad))
tn.setTextScale(0.2)
tn.setTextColor(color)
text_geom = GeomNode('text')
text_geom.addChild(tn)
tp = NodePath(text_geom)
tp.setPos((0, rad - 0.2, 0))
tp.setHpr((0, -90, 0))
tp.reparentTo(self.points_node)
pp.reparentTo(self.points_node)
