class MyGLCanvas(GLCanvas):
def __init__(self, parent):
super(MyGLCanvas, self).__init__(parent)
try:
import numpy as np
self.shader = GLShader()
if nanogui.opengl:
self.shader.init(
# An identifying name
"a_simple_shader",
# Vertex shader
"""#version 330
uniform mat4 model_view_proj;
in vec3 position;
in vec3 color;
out vec4 frag_color;
void main() {
frag_color = vec4(color, 1.0);
gl_Position = model_view_proj * vec4(position, 1.0);
}""",
# Fragment shader
"""#version 330
out vec4 color;
in vec4 frag_color;
void main() {
color = frag_color;
}"""
)
else: # GLES 2
self.shader.init(
# An identifying name
"a_simple_shader",
# Vertex shader
"""precision highp float;
uniform mat4 model_view_proj;
attribute vec3 position;
attribute vec3 color;
varying vec4 frag_color;
void main() {
frag_color = vec4(color, 1.0);
gl_Position = model_view_proj * vec4(position, 1.0);
}""",
# Fragment shader
"""precision highp float;
varying vec4 frag_color;
void main() {
gl_FragColor = frag_color;
}"""
)
# Draw a cube
indices = np.array(
[[0, 3, 3, 6, 7, 5, 4, 1, 4, 3, 5, 2],
[1, 2, 2, 7, 6, 4, 5, 0, 0, 7, 6, 1],
[3, 1, 6, 3, 5, 7, 1, 4, 3, 4, 2, 5]],
dtype=np.int32)
positions = np.array(
[[-1, -1, 1, 1, -1, -1, 1, 1],
[1, 1, 1, 1, -1, -1, -1, -1],
[1, -1, -1, 1, 1, -1, -1, 1]],
dtype=np.float32)
colors = np.array(
[[1, 0, 1, 0, 1, 0, 0.5, 1],
[0, 1, 1, 0, 0, 1, 0.5, 0],
[0, 0, 0, 1, 1, 1, 0.5, 0.5]],
dtype=np.float32)
self.shader.bind()
self.shader.upload_indices(indices)
self.shader.upload_attrib("position", positions)
self.shader.upload_attrib("color", colors)
except ImportError:
self.shader = None
pass
def draw_gl(self):
if self.shader is not None:
import numpy as np
self.shader.bind()
current_time = time.time()
angle_x = self.rotation[0] * current_time
angle_y = self.rotation[1] * current_time
angle_z = self.rotation[2] * current_time
mvp_rot_x = np.matrix(
[[1, 0, 0, 0],
[0, np.cos(angle_x), -np.sin(angle_x), 0],
[0, np.sin(angle_x), np.cos(angle_x), 0],
[0, 0, 0, 1]],
dtype=np.float32)
mvp_rot_y = np.matrix(
[[np.cos(angle_y), 0, np.sin(angle_y), 0],
[0, 1, 0, 0],
[-np.sin(angle_y), 0, np.cos(angle_y), 0],
[0, 0, 0, 1]],
dtype=np.float32)
mvp_rot_z = np.matrix(
[[np.cos(angle_z), -np.sin(angle_z), 0, 0],
[np.sin(angle_z), np.cos(angle_z), 0, 0],
[0, 0, 1, 0],
[0, 0, 0, 1]],
dtype=np.float32)
mvp = mvp_rot_x * mvp_rot_y * mvp_rot_z
mvp[0:3, 0:3] *= 0.25
self.shader.set_uniform("model_view_proj", mvp)
gl.Enable(gl.DEPTH_TEST)
self.shader.draw_indexed(gl.TRIANGLES, 0, 12)
gl.Disable(gl.DEPTH_TEST)
class TestApp(Screen):
def __init__(self):
super(TestApp, self).__init__((1024, 768), "NanoGUI Test")
window = Window(self, "Button demo")
window.set_position((15, 15))
window.set_layout(GroupLayout())
Label(window, "Push buttons", "sans-bold")
b = Button(window, "Plain button")
def cb():
print("pushed!")
b.set_callback(cb)
b = Button(window, "Styled", entypo.ICON_ROCKET)
b.set_background_color(Color(0, 0, 1.0, 0.1))
b.set_callback(cb)
Label(window, "Toggle buttons", "sans-bold")
b = Button(window, "Toggle me")
b.set_flags(Button.Flags.ToggleButton)
def change_cb(state):
print("Toggle button state: %s" % str(state))
b.set_change_callback(change_cb)
Label(window, "Radio buttons", "sans-bold")
b = Button(window, "Radio button 1")
b.set_flags(Button.Flags.RadioButton)
b = Button(window, "Radio button 2")
b.set_flags(Button.Flags.RadioButton)
Label(window, "A tool palette", "sans-bold")
tools = Widget(window)
tools.set_layout(BoxLayout(Orientation.Horizontal,
Alignment.Middle, 0, 6))
ToolButton(tools, entypo.ICON_CLOUD)
ToolButton(tools, entypo.ICON_CONTROLLER_FAST_FORWARD)
ToolButton(tools, entypo.ICON_COMPASS)
ToolButton(tools, entypo.ICON_INSTALL)
Label(window, "Popup buttons", "sans-bold")
popup_btn = PopupButton(window, "Popup", entypo.ICON_EXPORT)
popup = popup_btn.popup()
popup.set_layout(GroupLayout())
Label(popup, "Arbitrary widgets can be placed here")
CheckBox(popup, "A check box")
# popup right
popup_btn = PopupButton(popup, "Recursive popup", entypo.ICON_FLASH)
popup_right = popup_btn.popup()
popup_right.set_layout(GroupLayout())
CheckBox(popup_right, "Another check box")
# popup left
popup_btn = PopupButton(popup, "Recursive popup", entypo.ICON_FLASH)
popup_btn.set_side(Popup.Side.Left)
popup_left = popup_btn.popup()
popup_left.set_layout(GroupLayout())
CheckBox(popup_left, "Another check box");
window = Window(self, "Basic widgets")
window.set_position((200, 15))
window.set_layout(GroupLayout())
Label(window, "Message dialog", "sans-bold")
tools = Widget(window)
tools.set_layout(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.set_callback(cb2)
b.set_callback(cb)
b = Button(tools, "Warn")
def cb():
dlg = MessageDialog(self, MessageDialog.Type.Warning, "Title",
"This is a warning message")
dlg.set_callback(cb2)
b.set_callback(cb)
b = Button(tools, "Ask")
def cb():
dlg = MessageDialog(self, MessageDialog.Type.Warning, "Title",
"This is a question message", "Yes", "No",
True)
dlg.set_callback(cb2)
b.set_callback(cb)
import os
import sys
os.chdir(sys.path[0])
try:
icons = nanogui.load_image_directory(self.nvg_context(), "icons")
except:
try:
icons = nanogui.load_image_directory(self.nvg_context(), "../icons")
except:
icons = nanogui.load_image_directory(self.nvg_context(), "../resources/icons")
Label(window, "Image panel & scroll panel", "sans-bold")
image_panel_btn = PopupButton(window, "Image Panel")
image_panel_btn.set_icon(entypo.ICON_FOLDER)
popup = image_panel_btn.popup()
vscroll = VScrollPanel(popup)
img_panel = ImagePanel(vscroll)
img_panel.set_images(icons)
popup.set_fixed_size((245, 150))
img_window = Window(self, "Selected image")
img_window.set_position((710, 15))
img_window.set_layout(GroupLayout())
img_view = ImageView(img_window, icons[0][0])
def cb(i):
print("Selected item %i" % i)
img_view.bind_image(icons[i][0])
img_panel.set_callback(cb)
img_view.set_grid_threshold(3)
Label(window, "File dialog", "sans-bold")
tools = Widget(window)
tools.set_layout(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.set_callback(cb)
b = Button(tools, "Save")
def cb():
result = nanogui.file_dialog(valid, True)
print("File dialog result = %s" % result)
b.set_callback(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.set_checked(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.set_layout(BoxLayout(Orientation.Horizontal,
Alignment.Middle, 0, 20))
slider = Slider(panel)
slider.set_value(0.5)
slider.set_fixed_width(80)
text_box = TextBox(panel)
text_box.set_fixed_size((60, 25))
text_box.set_value("50")
text_box.set_units("%")
text_box.set_font_size(20)
text_box.set_alignment(TextBox.Alignment.Right)
def cb(value):
text_box.set_value("%i" % int(value * 100))
slider.set_callback(cb)
def cb(value):
print("Final slider value: %i" % int(value * 100))
slider.set_final_callback(cb)
window = Window(self, "Misc. widgets")
window.set_position((425, 15))
window.set_layout(GroupLayout())
tab_widget = TabWidget(window)
layer = tab_widget.create_tab("Color Wheel")
layer.set_layout(GroupLayout())
Label(layer, "Color wheel widget", "sans-bold")
ColorWheel(layer)
layer = tab_widget.create_tab("Function Graph")
layer.set_layout(GroupLayout())
Label(layer, "Function graph widget", "sans-bold")
graph = Graph(layer, "Some function")
graph.set_header("E = 2.35e-3")
graph.set_footer("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.set_values(values)
tab_widget.set_active_tab(0)
# Dummy tab used to represent the last tab button.
tab_widget.create_tab("+")
def tab_cb(index):
if index == (tab_widget.tab_count() - 1):
global counter
# When the "+" tab has been clicked, simply add a new tab.
tabName = "Dynamic {0}".format(counter)
layer_dyn = tab_widget.create_tab(index, tabName)
layer_dyn.set_layout(GroupLayout())
Label(layer_dyn, "Function graph widget", "sans-bold")
graph_dyn = Graph(layer_dyn, "Dynamic function")
graph_dyn.set_header("E = 2.35e-3")
graph_dyn.set_footer("Iteration {0}".format(index*counter))
values_dyn = [0.5 * abs((0.5 * math.sin(i / 10.0 + counter)) +
(0.5 * math.cos(i / 23.0 + 1 + counter)))
for i in range(100)]
graph_dyn.set_values(values_dyn)
counter += 1
# We must invoke perform layout from the screen instance to keep everything in order.
# This is essential when creating tabs dynamically.
self.perform_layout()
# Ensure that the newly added header is visible on screen
tab_widget.ensure_tab_visible(index)
tab_widget.set_callback(tab_cb)
tab_widget.set_active_tab(0)
window = Window(self, "Grid of small widgets")
window.set_position((425, 300))
layout = GridLayout(Orientation.Horizontal, 2,
Alignment.Middle, 15, 5)
layout.set_col_alignment(
[Alignment.Maximum, Alignment.Fill])
layout.set_spacing(0, 10)
window.set_layout(layout)
Label(window, "Floating point :", "sans-bold")
float_box = TextBox(window)
float_box.set_editable(True)
float_box.set_fixed_size((100, 20))
float_box.set_value("50")
float_box.set_units("GiB")
float_box.set_default_value("0.0")
float_box.set_font_size(16)
float_box.set_format("[-]?[0-9]*\\.?[0-9]+")
Label(window, "Positive integer :", "sans-bold")
int_box = IntBox(window)
int_box.set_editable(True)
int_box.set_fixed_size((100, 20))
int_box.set_value(50)
int_box.set_units("Mhz")
int_box.set_default_value("0")
int_box.set_font_size(16)
int_box.set_format("[1-9][0-9]*")
int_box.set_spinnable(True)
int_box.set_min_value(1)
int_box.set_value_increment(2)
Label(window, "Checkbox :", "sans-bold")
cb = CheckBox(window, "Check me")
cb.set_font_size(16)
cb.set_checked(True)
Label(window, "Combo box :", "sans-bold")
cobo = ComboBox(window, ["Item 1", "Item 2", "Item 3"])
cobo.set_font_size(16)
cobo.set_fixed_size((100, 20))
Label(window, "Color picker :", "sans-bold");
cp = ColorPicker(window, Color(255, 120, 0, 255));
cp.set_fixed_size((100, 20));
def cp_final_cb(color):
print(
"ColorPicker Final Callback: [{0}, {1}, {2}, {3}]".format(color.r,
color.g,
color.b,
color.w)
)
cp.set_final_callback(cp_final_cb)
# setup a fast callback for the color picker widget on a new window
# for demonstrative purposes
window = Window(self, "Color Picker Fast Callback")
window.set_position((425, 300))
layout = GridLayout(Orientation.Horizontal, 2,
Alignment.Middle, 15, 5)
layout.set_col_alignment(
[Alignment.Maximum, Alignment.Fill])
layout.set_spacing(0, 10)
window.set_layout(layout)
window.set_position((425, 500))
Label(window, "Combined: ");
b = Button(window, "ColorWheel", entypo.ICON_500PX)
Label(window, "Red: ")
red_int_box = IntBox(window)
red_int_box.set_editable(False)
Label(window, "Green: ")
green_int_box = IntBox(window)
green_int_box.set_editable(False)
Label(window, "Blue: ")
blue_int_box = IntBox(window)
blue_int_box.set_editable(False)
Label(window, "Alpha: ")
alpha_int_box = IntBox(window)
def cp_fast_cb(color):
b.set_background_color(color)
b.set_text_color(color.contrasting_color())
red = int(color.r * 255.0)
red_int_box.set_value(red)
green = int(color.g * 255.0)
green_int_box.set_value(green)
blue = int(color.b * 255.0)
blue_int_box.set_value(blue)
alpha = int(color.w * 255.0)
alpha_int_box.set_value(alpha)
cp.set_callback(cp_fast_cb)
self.perform_layout()
try:
import numpy as np
self.shader = GLShader()
if nanogui.opengl:
self.shader.init(
# An identifying name
"a_simple_shader",
# Vertex shader
"""#version 330
uniform mat4 model_view_proj;
in vec3 position;
void main() {
gl_Position = model_view_proj * vec4(position, 1.0);
}""",
"""#version 330
out vec4 color;
uniform float intensity;
void main() {
color = vec4(vec3(intensity), 1.0);
}"""
)
else: # GLES2
self.shader.init(
# An identifying name
"a_simple_shader",
# Vertex shader
"""precision highp float;
uniform mat4 model_view_proj;
attribute vec3 position;
void main() {
gl_Position = model_view_proj * vec4(position, 1.0);
}""",
"""precision highp float;
uniform float intensity;
void main() {
gl_FragColor = 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.upload_indices(indices)
self.shader.upload_attrib("position", positions)
self.shader.set_uniform("intensity", 0.5)
except ImportError:
self.shader = None
pass
def draw(self, ctx):
self.progress.set_value(math.fmod(time.time() / 10, 1))
super(TestApp, self).draw(ctx)
def draw_contents(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.set_uniform("model_view_proj", mvp)
self.shader.draw_indexed(gl.TRIANGLES, 0, 2)
super(TestApp, self).draw_contents()
def keyboard_event(self, key, scancode, action, modifiers):
if super(TestApp, self).keyboard_event(key, scancode,
action, modifiers):
return True
if key == glfw.KEY_ESCAPE and action == glfw.PRESS:
self.set_visible(False)
return True
return False
class TestApp(Screen):
def __init__(self):
super(TestApp, self).__init__((1024, 768), "NanoGUI Test")
window = Window(self, "Button demo")
window.set_position((15, 15))
window.set_layout(GroupLayout())
Label(window, "Push buttons", "sans-bold")
b = Button(window, "Plain button")
def cb():
print("pushed!")
b.set_callback(cb)
b = Button(window, "Styled", entypo.ICON_ROCKET)
b.set_background_color(Color(0, 0, 1.0, 0.1))
b.set_callback(cb)
Label(window, "Toggle buttons", "sans-bold")
b = Button(window, "Toggle me")
b.set_flags(Button.Flags.ToggleButton)
def change_cb(state):
print("Toggle button state: %s" % str(state))
b.set_change_callback(change_cb)
Label(window, "Radio buttons", "sans-bold")
b = Button(window, "Radio button 1")
b.set_flags(Button.Flags.RadioButton)
b = Button(window, "Radio button 2")
b.set_flags(Button.Flags.RadioButton)
Label(window, "A tool palette", "sans-bold")
tools = Widget(window)
tools.set_layout(
BoxLayout(Orientation.Horizontal, Alignment.Middle, 0, 6))
ToolButton(tools, entypo.ICON_CLOUD)
ToolButton(tools, entypo.ICON_CONTROLLER_FAST_FORWARD)
ToolButton(tools, entypo.ICON_COMPASS)
ToolButton(tools, entypo.ICON_INSTALL)
Label(window, "Popup buttons", "sans-bold")
popup_btn = PopupButton(window, "Popup", entypo.ICON_EXPORT)
popup = popup_btn.popup()
popup.set_layout(GroupLayout())
Label(popup, "Arbitrary widgets can be placed here")
CheckBox(popup, "A check box")
# popup right
popup_btn = PopupButton(popup, "Recursive popup", entypo.ICON_FLASH)
popup_right = popup_btn.popup()
popup_right.set_layout(GroupLayout())
CheckBox(popup_right, "Another check box")
# popup left
popup_btn = PopupButton(popup, "Recursive popup", entypo.ICON_FLASH)
popup_btn.set_side(Popup.Side.Left)
popup_left = popup_btn.popup()
popup_left.set_layout(GroupLayout())
CheckBox(popup_left, "Another check box")
window = Window(self, "Basic widgets")
window.set_position((200, 15))
window.set_layout(GroupLayout())
Label(window, "Message dialog", "sans-bold")
tools = Widget(window)
tools.set_layout(
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.set_callback(cb2)
b.set_callback(cb)
b = Button(tools, "Warn")
def cb():
dlg = MessageDialog(self, MessageDialog.Type.Warning, "Title",
"This is a warning message")
dlg.set_callback(cb2)
b.set_callback(cb)
b = Button(tools, "Ask")
def cb():
dlg = MessageDialog(self, MessageDialog.Type.Warning, "Title",
"This is a question message", "Yes", "No",
True)
dlg.set_callback(cb2)
b.set_callback(cb)
import os
import sys
os.chdir(sys.path[0])
try:
icons = nanogui.load_image_directory(self.nvg_context(), "icons")
except:
try:
icons = nanogui.load_image_directory(self.nvg_context(),
"../icons")
except:
icons = nanogui.load_image_directory(self.nvg_context(),
"../resources/icons")
Label(window, "Image panel & scroll panel", "sans-bold")
image_panel_btn = PopupButton(window, "Image Panel")
image_panel_btn.set_icon(entypo.ICON_FOLDER)
popup = image_panel_btn.popup()
vscroll = VScrollPanel(popup)
img_panel = ImagePanel(vscroll)
img_panel.set_images(icons)
popup.set_fixed_size((245, 150))
img_window = Window(self, "Selected image")
img_window.set_position((710, 15))
img_window.set_layout(GroupLayout())
img_view = ImageView(img_window, icons[0][0])
def cb(i):
print("Selected item %i" % i)
img_view.bind_image(icons[i][0])
img_panel.set_callback(cb)
img_view.set_grid_threshold(3)
Label(window, "File dialog", "sans-bold")
tools = Widget(window)
tools.set_layout(
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.set_callback(cb)
b = Button(tools, "Save")
def cb():
result = nanogui.file_dialog(valid, True)
print("File dialog result = %s" % result)
b.set_callback(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.set_checked(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.set_layout(
BoxLayout(Orientation.Horizontal, Alignment.Middle, 0, 20))
slider = Slider(panel)
slider.set_value(0.5)
slider.set_fixed_width(80)
text_box = TextBox(panel)
text_box.set_fixed_size((60, 25))
text_box.set_value("50")
text_box.set_units("%")
text_box.set_font_size(20)
text_box.set_alignment(TextBox.Alignment.Right)
def cb(value):
text_box.set_value("%i" % int(value * 100))
slider.set_callback(cb)
def cb(value):
print("Final slider value: %i" % int(value * 100))
slider.set_final_callback(cb)
window = Window(self, "Misc. widgets")
window.set_position((425, 15))
window.set_layout(GroupLayout())
tab_widget = TabWidget(window)
layer = tab_widget.create_tab("Color Wheel")
layer.set_layout(GroupLayout())
Label(layer, "Color wheel widget", "sans-bold")
ColorWheel(layer)
layer = tab_widget.create_tab("Function Graph")
layer.set_layout(GroupLayout())
Label(layer, "Function graph widget", "sans-bold")
graph = Graph(layer, "Some function")
graph.set_header("E = 2.35e-3")
graph.set_footer("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.set_values(values)
tab_widget.set_active_tab(0)
# Dummy tab used to represent the last tab button.
tab_widget.create_tab("+")
def tab_cb(index):
if index == (tab_widget.tab_count() - 1):
global counter
# When the "+" tab has been clicked, simply add a new tab.
tabName = "Dynamic {0}".format(counter)
layer_dyn = tab_widget.create_tab(index, tabName)
layer_dyn.set_layout(GroupLayout())
Label(layer_dyn, "Function graph widget", "sans-bold")
graph_dyn = Graph(layer_dyn, "Dynamic function")
graph_dyn.set_header("E = 2.35e-3")
graph_dyn.set_footer("Iteration {0}".format(index * counter))
values_dyn = [
0.5 * abs((0.5 * math.sin(i / 10.0 + counter)) +
(0.5 * math.cos(i / 23.0 + 1 + counter)))
for i in range(100)
]
graph_dyn.set_values(values_dyn)
counter += 1
# We must invoke perform layout from the screen instance to keep everything in order.
# This is essential when creating tabs dynamically.
self.perform_layout()
# Ensure that the newly added header is visible on screen
tab_widget.ensure_tab_visible(index)
tab_widget.set_callback(tab_cb)
tab_widget.set_active_tab(0)
window = Window(self, "Grid of small widgets")
window.set_position((425, 300))
layout = GridLayout(Orientation.Horizontal, 2, Alignment.Middle, 15, 5)
layout.set_col_alignment([Alignment.Maximum, Alignment.Fill])
layout.set_spacing(0, 10)
window.set_layout(layout)
Label(window, "Floating point :", "sans-bold")
float_box = TextBox(window)
float_box.set_editable(True)
float_box.set_fixed_size((100, 20))
float_box.set_value("50")
float_box.set_units("GiB")
float_box.set_default_value("0.0")
float_box.set_font_size(16)
float_box.set_format("[-]?[0-9]*\\.?[0-9]+")
Label(window, "Positive integer :", "sans-bold")
int_box = IntBox(window)
int_box.set_editable(True)
int_box.set_fixed_size((100, 20))
int_box.set_value(50)
int_box.set_units("Mhz")
int_box.set_default_value("0")
int_box.set_font_size(16)
int_box.set_format("[1-9][0-9]*")
int_box.set_spinnable(True)
int_box.set_min_value(1)
int_box.set_value_increment(2)
Label(window, "Checkbox :", "sans-bold")
cb = CheckBox(window, "Check me")
cb.set_font_size(16)
cb.set_checked(True)
Label(window, "Combo box :", "sans-bold")
cobo = ComboBox(window, ["Item 1", "Item 2", "Item 3"])
cobo.set_font_size(16)
cobo.set_fixed_size((100, 20))
Label(window, "Color picker :", "sans-bold")
cp = ColorPicker(window, Color(255, 120, 0, 255))
cp.set_fixed_size((100, 20))
def cp_final_cb(color):
print("ColorPicker Final Callback: [{0}, {1}, {2}, {3}]".format(
color.r, color.g, color.b, color.w))
cp.set_final_callback(cp_final_cb)
# setup a fast callback for the color picker widget on a new window
# for demonstrative purposes
window = Window(self, "Color Picker Fast Callback")
window.set_position((425, 300))
layout = GridLayout(Orientation.Horizontal, 2, Alignment.Middle, 15, 5)
layout.set_col_alignment([Alignment.Maximum, Alignment.Fill])
layout.set_spacing(0, 10)
window.set_layout(layout)
window.set_position((425, 500))
Label(window, "Combined: ")
b = Button(window, "ColorWheel", entypo.ICON_500PX)
Label(window, "Red: ")
red_int_box = IntBox(window)
red_int_box.set_editable(False)
Label(window, "Green: ")
green_int_box = IntBox(window)
green_int_box.set_editable(False)
Label(window, "Blue: ")
blue_int_box = IntBox(window)
blue_int_box.set_editable(False)
Label(window, "Alpha: ")
alpha_int_box = IntBox(window)
def cp_fast_cb(color):
b.set_background_color(color)
b.set_text_color(color.contrasting_color())
red = int(color.r * 255.0)
red_int_box.set_value(red)
green = int(color.g * 255.0)
green_int_box.set_value(green)
blue = int(color.b * 255.0)
blue_int_box.set_value(blue)
alpha = int(color.w * 255.0)
alpha_int_box.set_value(alpha)
cp.set_callback(cp_fast_cb)
self.perform_layout()
try:
import numpy as np
self.shader = GLShader()
if nanogui.opengl:
self.shader.init(
# An identifying name
"a_simple_shader",
# Vertex shader
"""#version 330
uniform mat4 model_view_proj;
in vec3 position;
void main() {
gl_Position = model_view_proj * vec4(position, 1.0);
}""",
"""#version 330
out vec4 color;
uniform float intensity;
void main() {
color = vec4(vec3(intensity), 1.0);
}""")
else: # GLES2
self.shader.init(
# An identifying name
"a_simple_shader",
# Vertex shader
"""precision highp float;
uniform mat4 model_view_proj;
attribute vec3 position;
void main() {
gl_Position = model_view_proj * vec4(position, 1.0);
}""",
"""precision highp float;
uniform float intensity;
void main() {
gl_FragColor = 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.upload_indices(indices)
self.shader.upload_attrib("position", positions)
self.shader.set_uniform("intensity", 0.5)
except ImportError:
self.shader = None
pass
def draw(self, ctx):
self.progress.set_value(math.fmod(time.time() / 10, 1))
super(TestApp, self).draw(ctx)
def draw_contents(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.set_uniform("model_view_proj", mvp)
self.shader.draw_indexed(gl.TRIANGLES, 0, 2)
super(TestApp, self).draw_contents()
def keyboard_event(self, key, scancode, action, modifiers):
if super(TestApp, self).keyboard_event(key, scancode, action,
modifiers):
return True
if key == glfw.KEY_ESCAPE and action == glfw.PRESS:
self.set_visible(False)
return True
return False