PointByPoint/graphing.html at main · ExyoOmar/PointByPoint · GitHub

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<!DOCTYPE html>
<html lang="ar" dir="rtl">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>نقطة بنقطة</title>
  <link rel="manifest" href="/manifest.json" />
  <script src="https://www.desmos.com/api/v1.10/calculator.js?apiKey=dcb31709b452b1cf9dc26972add0fda6"></script>
  <link href="https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css" rel="stylesheet"/>
  <style>
    body {
      font-family: 'Cairo', sans-serif;
      transition: background-color 0.3s ease, color 0.3s ease;
    }
    #calculator {
      height: 500px;
    }
    #error-toast {
      transition: all 0.3s ease-in-out;
    }
    .dark-mode {
      background-color: #1f2937;
      color: #f9fafb;
    }
    .dark-mode .bg-white {
      background-color: #374151 !important;
    }
    .dark-mode .text-blue-700 {
      color: #60a5fa !important;
    }
    .dark-mode textarea,
    .dark-mode .border {
      background-color: #4b5563;
      color: white;
    }
    .dark-mode footer {
      color: #9ca3af;
    }
  </style>
</head>
<body class="text-right p-6 bg-gray-50" id="body">

  <div class="max-w-3xl mx-auto bg-white rounded-2xl shadow-lg p-6 space-y-6">
    <div class="flex justify-between items-center">
      <h1 class="text-3xl font-bold text-blue-700">نقطة بنقطة</h1>
      <button onclick="toggleDarkMode()" class="text-sm text-gray-600 bg-gray-200 px-3 py-1 rounded-full hover:bg-gray-300">
        🌓 وضع الليل
      </button>
    </div>


    <div class="mt-6 bg-blue-50 p-4 rounded-lg text-base leading-relaxed text-gray-800">
      <h3 class="text-xl font-semibold text-blue-700 mb-2">حول الموقع</h3>
      <p>
        موقع <span class="font-bold">نقطة بنقطة</span> أداة رسومية تعليمية من إعداد الطالب عمر أبو بكر، تسهّل فهم المعادلات بالعربية وبأسلوب بسيط، مصممة خصيصاً لطلاب مدرسة الإسراء النموذجية.
      </p>
    </div>


    <div>
      <label for="equations" class="block text-lg font-semibold mb-2">أدخل المعادلات (واحدة في كل سطر):</label>
      <textarea id="equations" rows="4" placeholder="مثال:\nص = س^2 - 3\nص > 2س + 1"
        class="w-full px-4 py-2 border rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500"></textarea>
      <p id="equation-count" class="text-sm text-gray-500 mt-2">عدد المعادلات: 0</p>

      <div class="flex items-center space-x-2 text-sm text-gray-600 mt-2">
        <input type="checkbox" id="auto-plot" class="form-checkbox text-blue-600">
        <label for="auto-plot">رسم تلقائي أثناء الكتابة</label>
      </div>
    </div>

    <div class="flex justify-center gap-4">
      <button onclick="plotEquations()"
        class="bg-blue-600 hover:bg-blue-700 text-white font-bold py-2 px-6 rounded-full shadow">
        رسم المعادلات
      </button>

      <button onclick="clearEquations()"
        class="bg-red-500 hover:bg-red-600 text-white font-bold py-2 px-6 rounded-full shadow">
        مسح الرسومات
      </button>
    </div>

    <div class="flex justify-center gap-4">
      <button onclick="redrawEquations()"
        class="bg-yellow-500 hover:bg-yellow-600 text-white font-bold py-2 px-6 rounded-full shadow">
        إعادة الرسم
      </button>

      <button onclick="downloadImage()"
        class="bg-green-600 hover:bg-green-700 text-white font-bold py-2 px-6 rounded-full shadow">
        حفظ كصورة
      </button>

      <button onclick="exportEquations()"
        class="bg-purple-600 hover:bg-purple-700 text-white font-bold py-2 px-6 rounded-full shadow">
        تصدير المعادلات
      </button>
    </div>

    <div class="mt-4 text-sm text-gray-600 text-center">
      <p>إصدار 2.2: تحسين أداء الموقع وحل المشكلات </p>
    </div>

    <div id="calculator" class="rounded-lg border shadow-inner bg-white"></div>
  </div>

  <div id="error-toast" class="hidden fixed bottom-4 right-4 bg-red-500 text-white py-2 px-4 rounded shadow-lg text-sm z-50">
    ⚠️ يوجد خطأ في إحدى المعادلات. يرجى التحقق منها.
  </div>

  <footer class="mt-10 text-center text-xs text-gray-400">
    موقع <span class="font-semibold">نقطة بنقطة</span> تم تطويره من الطالب عمر أبو بكر ✨
  </footer>

  <script>
    let calculator;

    function initializeCalculator() {
      const elt = document.getElementById('calculator');
      calculator = Desmos.GraphingCalculator(elt, {
        expressions: true,
        settingsMenu: false,
        keypad: true,
        language: 'ar'
      });
    }

    function convertArabicToLatex(arabicInput) {
      let converted = arabicInput
        .replace(/[\u200E\u200F]/g, '')
        .replace(/س/g, 'x')
        .replace(/ص/g, 'y')
        .replace(/\^/g, '^');


      converted = converted
        .replace(/([xy])\s*>=\s*([^\n]+)/g, '$1 \\ge $2')
        .replace(/([xy])\s*<=\s*([^\n]+)/g, '$1 \\le $2')
        .replace(/([xy])\s*>\s*([^\n]+)/g, '$1 > $2')
        .replace(/([xy])\s*<\s*([^\n]+)/g, '$1 < $2')
        .replace(/=/g, '=');

      return converted.trim();
    }

    function plotEquations() {
      calculator.setExpressions([]);
      const input = document.getElementById('equations').value.trim();
      const lines = input.split('\n');
      let hasError = false;

      lines.forEach((line, index) => {
        const converted = convertArabicToLatex(line);
        if (converted) {
          try {
            calculator.setExpression({
              id: 'eq' + index,
              latex: converted
            });
          } catch (e) {
            hasError = true;
          }
        }
      });

      if (hasError) showErrorToast();
    }

    function clearEquations() {
      document.getElementById('equations').value = '';
      document.getElementById('equation-count').innerText = "عدد المعادلات: 0";

      const all = calculator.getExpressions();
      all.forEach(expr => calculator.removeExpression(expr));
    }

    function updateEquationCount() {
      const lines = document.getElementById('equations').value.trim().split('\n').filter(line => line.trim() !== '');
      document.getElementById('equation-count').innerText = `عدد المعادلات: ${lines.length}`;
    }

    function showErrorToast() {
      const toast = document.getElementById('error-toast');
      toast.classList.remove('hidden');
      setTimeout(() => toast.classList.add('hidden'), 3000);
    }

    function toggleDarkMode() {
      document.body.classList.toggle('dark-mode');
    }

    window.onload = () => {
      initializeCalculator();
      updateEquationCount();
    };

    document.getElementById('equations').addEventListener('input', () => {
      updateEquationCount();
      if (document.getElementById('auto-plot').checked) {
        plotEquations();
      }
    });

    function redrawEquations() {
    plotEquations();
  }

  function redrawEquations() {
    if (calculator) plotEquations();
  }

  function downloadImage() {
    if (!calculator) return;

    setTimeout(() => {
      try {
        const img = calculator.screenshot({ width: 600, height: 400 });
        const a = document.createElement('a');
        a.href = img;
        a.download = 'nqtah-graph.png';
        document.body.appendChild(a);
        a.click();
        document.body.removeChild(a);
      } catch (e) {
        alert('حدث خطأ أثناء حفظ الصورة');
      }
    }, 100);
  }

  function exportEquations() {
    const input = document.getElementById('equations').value.trim();
    const blob = new Blob([input], { type: 'text/plain;charset=utf-8' });
    const url = URL.createObjectURL(blob);
    const a = document.createElement('a');
    a.href = url;
    a.download = 'معادلات.txt';
    document.body.appendChild(a);
    a.click();
    document.body.removeChild(a);
    URL.revokeObjectURL(url);
  }
  function getRandomColor() {
  const colors = [
    '#1f77b4', '#ff7f0e', '#2ca02c', '#d62728',
    '#9467bd', '#8c564b', '#e377c2', '#7f7f7f',
    '#17becf', '#bcbd22', '#f39c12', '#e74c3c'
  ];
  return colors[Math.floor(Math.random() * colors.length)];
}

function redrawEquations() {
  const input = document.getElementById('equations').value.trim();
  if (!input) return;

  calculator.setExpressions([]);
  const lines = input.split('\n');
  let hasError = false;

  lines.forEach((line, index) => {
    const converted = convertArabicToLatex(line);
    if (converted) {
      try {
        calculator.setExpression({
          id: 'eq' + index,
          latex: converted,
          color: getRandomColor()
        });
      } catch (e) {
        hasError = true;
      }
    }
  });

  if (hasError) showErrorToast();
}


  </script>
</body>
</html>