def __init__(self):
super().__init__(None)
self.resize(640, 480)
# Creat button and hook it up
self._button = QtWidgets.QPushButton("Add a line", self)
self._button.clicked.connect(self._on_button_click)
# Create canvas, renderer and a scene object
self._canvas = WgpuCanvas(parent=self)
self._renderer = gfx.WgpuRenderer(self._canvas)
self._scene = gfx.Scene()
self._camera = gfx.OrthographicCamera(110, 110)
# Hook up the animate callback
self._canvas.request_draw(self.animate)
layout = QtWidgets.QHBoxLayout()
self.setLayout(layout)
layout.addWidget(self._button)
layout.addWidget(self._canvas)
binding = Binding("u_stdinfo", "buffer/uniform",
render_info.stdinfo_uniform)
shader.define_binding(0, 0, binding)
return [
{
"render_shader": shader,
"primitive_topology": "triangle-strip",
"indices": range(4),
"bindings0": {
0: binding
},
},
]
# %% Setup scene
canvas = WgpuCanvas()
renderer = gfx.WgpuRenderer(canvas)
scene = gfx.Scene()
t1 = Square(None, SquareMaterial())
scene.add(t1)
camera = gfx.NDCCamera() # This example does not even use the camera
if __name__ == "__main__":
print(__doc__)
canvas.request_draw(lambda: renderer.render(scene, camera))
run()
"""
Display a lot of line objects. Because of the architecture of wgpu,
this is still performant.
"""
import time # noqa
import numpy as np
from wgpu.gui.auto import WgpuCanvas, run
import pygfx as gfx
canvas = WgpuCanvas(max_fps=999)
renderer = gfx.WgpuRenderer(canvas, show_fps=True)
scene = gfx.Scene()
# Define number of vertices
cols = 20
rows = 50
nvertices = 30000
use_thin_lines = True
print(nvertices * rows * cols, "vertices in total")
x = np.linspace(0.05, 0.95, nvertices, dtype=np.float32)
for row in range(rows):
for col in range(cols):
y = np.sin(x * 25) * 0.45 + np.random.normal(0, 0.02, len(x)).astype(np.float32)
positions = np.column_stack([x, y, np.zeros_like(x)])