https://github.com/NSchertler/GeneralizedMotorcycleGraph
Revision ebd9979c9a23db6f8fa7ed0167965a7ad432bb76 authored by Nico Schertler on 05 April 2017, 08:16:54 UTC, committed by Nico Schertler on 05 April 2017, 08:16:54 UTC
# Conflicts: # src/common.cpp # src/screen.cpp
Tip revision: ebd9979c9a23db6f8fa7ed0167965a7ad432bb76 authored by Nico Schertler on 05 April 2017, 08:16:54 UTC
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Tip revision: ebd9979
example1.py
# python/example1.py -- Python version of an example application that shows
# how to use the various widget classes. For a C++ implementation, see
# '../src/example1.cpp'.
#
# NanoGUI was developed by Wenzel Jakob <wenzel@inf.ethz.ch>.
# The widget drawing code is based on the NanoVG demo application
# by Mikko Mononen.
#
# All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE.txt file.
import nanogui
import math
import time
import gc
from nanogui import Color, Screen, Window, GroupLayout, BoxLayout, \
ToolButton, Label, Button, Widget, \
PopupButton, CheckBox, MessageDialog, VScrollPanel, \
ImagePanel, ImageView, ComboBox, ProgressBar, Slider, \
TextBox, ColorWheel, Graph, GridLayout, \
Alignment, Orientation, TabWidget, IntBox, GLShader
from nanogui import gl, glfw, entypo
class TestApp(Screen):
def __init__(self):
super(TestApp, self).__init__((1024, 768), "NanoGUI Test")
window = Window(self, "Button demo")
window.setPosition((15, 15))
window.setLayout(GroupLayout())
Label(window, "Push buttons", "sans-bold")
b = Button(window, "Plain button")
def cb():
print("pushed!")
b.setCallback(cb)
b = Button(window, "Styled", entypo.ICON_ROCKET)
b.setBackgroundColor(Color(0, 0, 1.0, 0.1))
b.setCallback(cb)
Label(window, "Toggle buttons", "sans-bold")
b = Button(window, "Toggle me")
b.setFlags(Button.Flags.ToggleButton)
def change_cb(state):
print("Toggle button state: %s" % str(state))
b.setChangeCallback(change_cb)
Label(window, "Radio buttons", "sans-bold")
b = Button(window, "Radio button 1")
b.setFlags(Button.Flags.RadioButton)
b = Button(window, "Radio button 2")
b.setFlags(Button.Flags.RadioButton)
Label(window, "A tool palette", "sans-bold")
tools = Widget(window)
tools.setLayout(BoxLayout(Orientation.Horizontal,
Alignment.Middle, 0, 6))
ToolButton(tools, entypo.ICON_CLOUD)
ToolButton(tools, entypo.ICON_FF)
ToolButton(tools, entypo.ICON_COMPASS)
ToolButton(tools, entypo.ICON_INSTALL)
Label(window, "Popup buttons", "sans-bold")
popupBtn = PopupButton(window, "Popup", entypo.ICON_EXPORT)
popup = popupBtn.popup()
popup.setLayout(GroupLayout())
Label(popup, "Arbitrary widgets can be placed here")
CheckBox(popup, "A check box")
popupBtn = PopupButton(popup, "Recursive popup", entypo.ICON_FLASH)
popup = popupBtn.popup()
popup.setLayout(GroupLayout())
CheckBox(popup, "Another check box")
window = Window(self, "Basic widgets")
window.setPosition((200, 15))
window.setLayout(GroupLayout())
Label(window, "Message dialog", "sans-bold")
tools = Widget(window)
tools.setLayout(BoxLayout(Orientation.Horizontal,
Alignment.Middle, 0, 6))
def cb2(result):
print("Dialog result: %i" % result)
b = Button(tools, "Info")
def cb():
dlg = MessageDialog(self, MessageDialog.Type.Information, "Title",
"This is an information message")
dlg.setCallback(cb2)
b.setCallback(cb)
b = Button(tools, "Warn")
def cb():
dlg = MessageDialog(self, MessageDialog.Type.Warning, "Title",
"This is a warning message")
dlg.setCallback(cb2)
b.setCallback(cb)
b = Button(tools, "Ask")
def cb():
dlg = MessageDialog(self, MessageDialog.Type.Warning, "Title",
"This is a question message", "Yes", "No",
True)
dlg.setCallback(cb2)
b.setCallback(cb)
import os
import sys
os.chdir(sys.path[0])
try:
icons = nanogui.loadImageDirectory(self.nvgContext(), "icons")
except:
try:
icons = nanogui.loadImageDirectory(self.nvgContext(), "../icons")
except:
icons = nanogui.loadImageDirectory(self.nvgContext(), "../resources/icons")
Label(window, "Image panel & scroll panel", "sans-bold")
imagePanelBtn = PopupButton(window, "Image Panel")
imagePanelBtn.setIcon(entypo.ICON_FOLDER)
popup = imagePanelBtn.popup()
vscroll = VScrollPanel(popup)
imgPanel = ImagePanel(vscroll)
imgPanel.setImages(icons)
popup.setFixedSize((245, 150))
img_window = Window(self, "Selected image")
img_window.setPosition((710, 15))
img_window.setLayout(GroupLayout())
imgView = ImageView(img_window, icons[0][0])
def cb(i):
print("Selected item %i" % i)
imgView.bindImage(icons[i][0])
imgPanel.setCallback(cb)
imgView.setGridThreshold(3)
Label(window, "File dialog", "sans-bold")
tools = Widget(window)
tools.setLayout(BoxLayout(Orientation.Horizontal,
Alignment.Middle, 0, 6))
b = Button(tools, "Open")
valid = [("png", "Portable Network Graphics"), ("txt", "Text file")]
def cb():
result = nanogui.file_dialog(valid, False)
print("File dialog result = %s" % result)
b.setCallback(cb)
b = Button(tools, "Save")
def cb():
result = nanogui.file_dialog(valid, True)
print("File dialog result = %s" % result)
b.setCallback(cb)
Label(window, "Combo box", "sans-bold")
ComboBox(window, ["Combo box item 1", "Combo box item 2",
"Combo box item 3"])
Label(window, "Check box", "sans-bold")
def cb(state):
print("Check box 1 state: %s" % state)
chb = CheckBox(window, "Flag 1", cb)
chb.setChecked(True)
def cb(state):
print("Check box 2 state: %s" % state)
CheckBox(window, "Flag 2", cb)
Label(window, "Progress bar", "sans-bold")
self.progress = ProgressBar(window)
Label(window, "Slider and text box", "sans-bold")
panel = Widget(window)
panel.setLayout(BoxLayout(Orientation.Horizontal,
Alignment.Middle, 0, 20))
slider = Slider(panel)
slider.setValue(0.5)
slider.setFixedWidth(80)
textBox = TextBox(panel)
textBox.setFixedSize((60, 25))
textBox.setValue("50")
textBox.setUnits("%")
textBox.setFontSize(20)
textBox.setAlignment(TextBox.Alignment.Right)
def cb(value):
textBox.setValue("%i" % int(value * 100))
slider.setCallback(cb)
def cb(value):
print("Final slider value: %i" % int(value * 100))
slider.setFinalCallback(cb)
window = Window(self, "Misc. widgets")
window.setPosition((425, 15))
window.setLayout(GroupLayout())
tabWidget = TabWidget(window)
layer = tabWidget.createTab("Color Wheel")
layer.setLayout(GroupLayout())
Label(layer, "Color wheel widget", "sans-bold")
ColorWheel(layer)
layer = tabWidget.createTab("Function Graph")
layer.setLayout(GroupLayout())
Label(layer, "Function graph widget", "sans-bold")
graph = Graph(layer, "Some function")
graph.setHeader("E = 2.35e-3")
graph.setFooter("Iteration 89")
values = [0.5 * (0.5 * math.sin(i / 10.0) +
0.5 * math.cos(i / 23.0) + 1)
for i in range(100)]
graph.setValues(values)
tabWidget.setActiveTab(0)
window = Window(self, "Grid of small widgets")
window.setPosition((425, 300))
layout = GridLayout(Orientation.Horizontal, 2,
Alignment.Middle, 15, 5)
layout.setColAlignment(
[Alignment.Maximum, Alignment.Fill])
layout.setSpacing(0, 10)
window.setLayout(layout)
Label(window, "Floating point :", "sans-bold")
floatBox = TextBox(window)
floatBox.setEditable(True)
floatBox.setFixedSize((100, 20))
floatBox.setValue("50")
floatBox.setUnits("GiB")
floatBox.setDefaultValue("0.0")
floatBox.setFontSize(16)
floatBox.setFormat("[-]?[0-9]*\\.?[0-9]+")
Label(window, "Positive integer :", "sans-bold")
intBox = IntBox(window)
intBox.setEditable(True)
intBox.setFixedSize((100, 20))
intBox.setValue(50)
intBox.setUnits("Mhz")
intBox.setDefaultValue("0")
intBox.setFontSize(16)
intBox.setFormat("[1-9][0-9]*")
intBox.setSpinnable(True)
intBox.setMinValue(1)
intBox.setValueIncrement(2)
Label(window, "Checkbox :", "sans-bold")
cb = CheckBox(window, "Check me")
cb.setFontSize(16)
cb.setChecked(True)
Label(window, "Combo box :", "sans-bold")
cobo = ComboBox(window, ["Item 1", "Item 2", "Item 3"])
cobo.setFontSize(16)
cobo.setFixedSize((100, 20))
Label(window, "Color button :", "sans-bold")
popupBtn = PopupButton(window, "", 0)
popupBtn.setBackgroundColor(Color(1, 0.47, 0, 1))
popupBtn.setFontSize(16)
popupBtn.setFixedSize((100, 20))
popup = popupBtn.popup()
popup.setLayout(GroupLayout())
colorwheel = ColorWheel(popup)
colorwheel.setColor(popupBtn.backgroundColor())
colorBtn = Button(popup, "Pick")
colorBtn.setFixedSize((100, 25))
c = colorwheel.color()
colorBtn.setBackgroundColor(c)
def cb(value):
colorBtn.setBackgroundColor(value)
colorwheel.setCallback(cb)
def cb(pushed):
if (pushed):
popupBtn.setBackgroundColor(colorBtn.backgroundColor())
popupBtn.setPushed(False)
colorBtn.setChangeCallback(cb)
self.performLayout()
try:
import numpy as np
self.shader = GLShader()
self.shader.init(
# An identifying name
"a_simple_shader",
# Vertex shader
"""#version 330
uniform mat4 modelViewProj;
in vec3 position;
void main() {
gl_Position = modelViewProj * vec4(position, 1.0);
}""",
"""#version 330
out vec4 color;
uniform float intensity;
void main() {
color = vec4(vec3(intensity), 1.0);
}"""
)
# Draw 2 triangles
indices = np.array(
[[0, 2], [1, 3], [2, 0]],
dtype=np.int32)
positions = np.array(
[[-1, 1, 1, -1],
[-1, -1, 1, 1],
[0, 0, 0, 0]],
dtype=np.float32)
self.shader.bind()
self.shader.uploadIndices(indices)
self.shader.uploadAttrib("position", positions)
self.shader.setUniform("intensity", 0.5)
except ImportError:
self.shader = None
pass
def draw(self, ctx):
self.progress.setValue(math.fmod(time.time() / 10, 1))
super(TestApp, self).draw(ctx)
def drawContents(self):
if self.shader is not None:
import numpy as np
self.shader.bind()
angle = time.time()
mvp = np.array(
[[np.cos(angle), -np.sin(angle), 0, 0],
[np.sin(angle), np.cos(angle), 0, 0],
[0, 0, 1, 0],
[0, 0, 0, 1]],
dtype=np.float32
)
mvp[0:3, 0:3] *= 0.25
mvp[0, :] *= self.size()[1] / self.size()[0]
self.shader.setUniform("modelViewProj", mvp)
self.shader.drawIndexed(gl.TRIANGLES, 0, 2)
super(TestApp, self).drawContents()
def keyboardEvent(self, key, scancode, action, modifiers):
if super(TestApp, self).keyboardEvent(key, scancode,
action, modifiers):
return True
if key == glfw.KEY_ESCAPE and action == glfw.PRESS:
self.setVisible(False)
return True
return False
if __name__ == "__main__":
nanogui.init()
test = TestApp()
test.drawAll()
test.setVisible(True)
nanogui.mainloop()
del test
gc.collect()
nanogui.shutdown()
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