app.py

import streamlit as st
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.patches import Polygon, Circle

# Functions (including calculate_distance) are properly defined here

# Function to calculate the distance between two points
def calculate_distance(x1, y1, x2, y2):
    return np.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2)

# Function to calculate angles using the Law of Cosines
def calculate_angle(a, b, c):
    try:
        angle = np.degrees(np.acos((b ** 2 + c ** 2 - a ** 2) / (2 * b * c)))
    except ValueError:
        angle = 0  # Handle possible domain error in acos
    return angle

# Additional helper functions remain here...

def main():
    st.set_page_config(
        page_title="Advanced Triangle Solver",
        layout="wide",
        initial_sidebar_state="expanded",
    )

    # Enhanced Aesthetic Style
    st.markdown(
        """
        <style>
        body {
            background-color: #f7f9fc;
            color: #333333;
            font-family: 'Open Sans', sans-serif;
        }
        .stTitle, .stHeader, .stSubheader {
            color: #1a73e8;
            font-weight: bold;
        }
        .stSidebar {
            background-color: #f0f4f8;
            color: #333333;
        }
        .stMarkdown {
            font-size: 16px;
        }
        .stButton > button {
            background-color: #1a73e8;
            color: white;
            border: none;
            border-radius: 5px;
            padding: 10px 20px;
            font-size: 16px;
            cursor: pointer;
        }
        .stButton > button:hover {
            background-color: #155ab3;
        }
        </style>
        """,
        unsafe_allow_html=True,
    )

    st.title("🔺 Advanced Triangle Solver")
    st.sidebar.header("📌 Input Coordinates")

    # Collect user input
    x1 = st.sidebar.number_input("X1", min_value=-100.0, max_value=100.0, step=0.1, format="%.2f")
    y1 = st.sidebar.number_input("Y1", min_value=-100.0, max_value=100.0, step=0.1, format="%.2f")
    x2 = st.sidebar.number_input("X2", min_value=-100.0, max_value=100.0, step=0.1, format="%.2f")
    y2 = st.sidebar.number_input("Y2", min_value=-100.0, max_value=100.0, step=0.1, format="%.2f")
    x3 = st.sidebar.number_input("X3", min_value=-100.0, max_value=100.0, step=0.1, format="%.2f")
    y3 = st.sidebar.number_input("Y3", min_value=-100.0, max_value=100.0, step=0.1, format="%.2f")

    if st.sidebar.button("Calculate 🔍"):
        # Logic to calculate triangle properties and display them
        try:
            a = calculate_distance(x2, y2, x3, y3)
            b = calculate_distance(x1, y1, x3, y3)
            c = calculate_distance(x1, y1, x2, y2)
            
            # Add calculations for angles, area, perimeter, etc.

            # Plot the triangle
            st.success("Triangle successfully solved!")
        except Exception as e:
            st.error(f"An error occurred: {e}")

if __name__ == "__main__":
    main()