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e66cfb4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | import dash
from dash import dcc, html, Input, Output
import plotly.graph_objects as go
import numpy as np
# --- 1. ?????? ---
def f(x, y):
return 4 - x**2 - 2*y**2
def df_dx(x, y): # ? x ??
return -2 * x
def df_dy(x, y): # ? y ??
return -4 * y
# --- 2. ??? Dash App ---
app = dash.Dash(__name__)
# --- 3. ???? (Layout) ---
app.layout = html.Div([
html.H2("????????? (Python?)", style={'textAlign': 'center'}),
# ????
html.Div([
html.Div([
html.Label("?? a ?:"),
dcc.Input(id='input-a', type='number', value=1, step=0.1),
], style={'marginRight': '20px', 'display': 'inline-block'}),
html.Div([
html.Label("?? b ?:"),
dcc.Input(id='input-b', type='number', value=1, step=0.1),
], style={'marginRight': '20px', 'display': 'inline-block'}),
# ?? Checklist ??????
dcc.Checklist(
id='toggle-switches',
options=[
{'label': ' ???? C1 (x??)', 'value': 'show_c1'},
{'label': ' ???? T1', 'value': 'show_t1'},
{'label': ' ???? C2 (y??)', 'value': 'show_c2'},
{'label': ' ???? T2', 'value': 'show_t2'},
],
value=[], # ?????
inline=True
)
], style={'padding': '20px', 'backgroundColor': '#f9f9f9'}),
# ??????
html.Div(id='slope-info', style={'padding': '10px', 'fontSize': '18px', 'fontWeight': 'bold'}),
# 3D ???
dcc.Graph(id='3d-surface-plot', style={'height': '80vh'})
])
# --- 4. ???? (??????) ---
@app.callback(
[Output('3d-surface-plot', 'figure'),
Output('slope-info', 'children')],
[Input('input-a', 'value'),
Input('input-b', 'value'),
Input('toggle-switches', 'value')]
)
def update_graph(a, b, toggles):
# ??????????????????
if a is None: a = 1
if b is None: b = 1
# ?? P ???
z_val = f(a, b)
# --- ?????? ---
x_range = np.linspace(-3, 3, 50)
y_range = np.linspace(-3, 3, 50)
X, Y = np.meshgrid(x_range, y_range)
Z = f(X, Y)
fig = go.Figure()
# 1. ??? (???)
fig.add_trace(go.Surface(z=Z, x=X, y=Y, colorscale='Viridis', opacity=0.6, showscale=False, name='??'))
# 2. ? P ?
fig.add_trace(go.Scatter3d(
x=[a], y=[b], z=[z_val],
mode='markers', marker=dict(size=6, color='black'),
name=f'P({a},{b})'
))
# --- ?? C1 ? T1 (? x ??) ---
slope_x = df_dx(a, b)
info_text = []
if 'show_c1' in toggles:
# C1: ?? y=b, x ??
t = np.linspace(-3, 3, 50)
fig.add_trace(go.Scatter3d(
x=t, y=[b]*50, z=f(t, b),
mode='lines', line=dict(color='red', width=5),
name='C1 (?? y=b)'
))
if 'show_t1' in toggles:
# T1: ?? (?????????)
# ????? (1, 0, slope_x)
t_tan = np.linspace(-1.5, 1.5, 10) # ????
x_tan = a + t_tan
y_tan = [b] * 10
z_tan = z_val + slope_x * t_tan
fig.add_trace(go.Scatter3d(
x=x_tan, y=y_tan, z=z_tan,
mode='lines', line=dict(color='red', width=4, dash='dash'),
name=f'T1 ?? (m={slope_x:.2f})'
))
info_text.append(f"x???? (fx) = {slope_x:.2f}")
# --- ?? C2 ? T2 (? y ??) ---
slope_y = df_dy(a, b)
if 'show_c2' in toggles:
# C2: ?? x=a, y ??
t = np.linspace(-3, 3, 50)
fig.add_trace(go.Scatter3d(
x=[a]*50, y=t, z=f(a, t),
mode='lines', line=dict(color='blue', width=5),
name='C2 (?? x=a)'
))
if 'show_t2' in toggles:
# T2 ??
# ????? (0, 1, slope_y)
t_tan = np.linspace(-1.5, 1.5, 10)
x_tan = [a] * 10
y_tan = b + t_tan
z_tan = z_val + slope_y * t_tan
fig.add_trace(go.Scatter3d(
x=x_tan, y=y_tan, z=z_tan,
mode='lines', line=dict(color='blue', width=4, dash='dash'),
name=f'T2 ?? (m={slope_y:.2f})'
))
info_text.append(f"y???? (fy) = {slope_y:.2f}")
# --- ????????? ---
fig.update_layout(
scene=dict(
xaxis=dict(range=[-3, 3]),
yaxis=dict(range=[-3, 3]),
zaxis=dict(range=[-5, 5]),
aspectratio=dict(x=1, y=1, z=0.7)
),
margin=dict(l=0, r=0, b=0, t=0)
)
return fig, " | ".join(info_text) if info_text else "????????????"
# --- 5. ????? ---
if __name__ == '__main__':
app.run(debug=True) |