def draw_init(self, backgroundImg=False, fontsize=14, fontColor="white"):
gloo.clear(color="#231e1f")
# gloo.set_state("translucent", depth_test=False,blend=True)
try:
self.text.clear()
except:
pass
self.selected_point = -1
self.fontsize = fontsize
panzoom = PanZoomTransform(self.canvas)
if backgroundImg:
self.im = read_png("timg.png")
self.image = ImageVisual(self.im, method="subdivide")
self.image.update = self.canvas.update
self.image.transform = STTransform(
scale=(2 / self.image.size[0], 2 / self.image.size[1]),
translate=(-1, -1),
)
else:
self.image = None
self.markers = PointCollection(
"agg",
vertex=self.pvertex,
fragment=self.pfragment,
color="shared",
size="local",
transform=panzoom,
)
self.lines = PathCollection(
mode="agg",
vertex=self.lvertex,
fragment=self.lfragment,
color="shared",
linewidth="global",
transform=panzoom,
)
self.markers.update.connect(self.canvas.update)
self.lines.update.connect(self.canvas.update)
self.text = TextVisual(u"", color="white")
self.text.font_size = self.fontsize
self.text.visible = False
self.textpos = None
self.canvas.events.draw.connect(self.on_draw)
self.canvas.events.resize.connect(self.on_resize)
self.canvas.events.mouse_press.connect(self.on_mouse_press)
self.canvas.show()
def __init__(self):
prog = MultiProgram(vcode='', fcode='')
self.points = PointCollection("agg", color="shared", program=prog)
visuals.Visual.__init__(self, program=prog)
# -*- coding: utf-8 -*-
# vispy: testskip
import sys
import numpy as np
from vispy import app, gloo
from vispy.visuals.collections import PointCollection
from vispy.visuals.transforms import PanZoomTransform
canvas = app.Canvas(size=(800, 600), show=True, keys='interactive')
gloo.set_viewport(0, 0, canvas.size[0], canvas.size[1])
gloo.set_state("translucent", depth_test=False)
panzoom = PanZoomTransform(canvas)
points = PointCollection("agg", color="shared", transform=panzoom)
points.append(np.random.normal(0.0, 0.5, (10000, 3)), itemsize=5000)
points["color"] = (1, 0, 0, 1), (0, 0, 1, 1)
points.update.connect(canvas.update)
@canvas.connect
def on_draw(event):
gloo.clear('white')
points.draw()
@canvas.connect
def on_resize(event):
width, height = event.size
gloo.set_viewport(0, 0, width, height)
