taskD1.html

<!DOCTYPE html>
<html lang="de">
<head>
    <meta charset="UTF-8">
    <title>Taschenrechner D1</title>
    <style>
        body {
            font-family: sans-serif;
            padding: 20px;
            text-align: center;
        }
        #display {
            width: 800px;
            height: 50px;
            font-size: 24px;
            margin: 0 auto 20px;
            text-align: right;
            padding: 10px;
            border: 2px solid #ccc;
            border-radius: 5px;
            background-color: #f9f9f9;
        }
        .calculator {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        button {
            width: 60px;
            height: 60px;
            font-size: 20px;
            cursor: pointer;
            background-color: #3b78c2;
            color: white;
            border: none;
            border-radius: 4px;
        }
        #counter {
            font-weight: bold;
            margin-top: 20px;
        }
        #log {
            text-align: left;
            white-space: pre-wrap;
            margin-top: 30px;
            width: 90%;
            margin-left: auto;
            margin-right: auto;
            font-family: monospace;
            background-color: #f0f0f0;
            padding: 15px;
            border-radius: 5px;
        }
    </style>
</head>
<body>

<h1>Taschenrechner D1</h1>
<div id="display">0</div>

<div class="calculator" id="calculator"></div>

<div id="counter">Anzahl durchgeführter Rechungen: 0</div>

<div id="log"></div>

<script>
    const keys = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', '*', '=', 'C'];
    const calculator = document.getElementById('calculator');
    const display = document.getElementById('display');
    const logDisplay = document.getElementById('log');
    const counterDisplay = document.getElementById('counter');

    const keyWidth = 60; // px
    let lastCenter = null;
    let lastTime = null;
    let input = '';
    let calcCount = 0;
    let logEntries = [];

    // Tasten erzeugen
    keys.forEach(key => {
        const btn = document.createElement('button');
        btn.textContent = key;
        btn.addEventListener('click', () => handleKeyPress(btn, key));
        calculator.appendChild(btn);
    });

    function handleKeyPress(button, key) {
        const rect = button.getBoundingClientRect();
        const center = {
            x: rect.left + rect.width / 2,
            y: rect.top + rect.height / 2
        };

        const now = performance.now();
        let id = null;
        let mt = null;

        if (lastCenter && lastTime !== null) {
            const dx = center.x - lastCenter.x;
            const dy = center.y - lastCenter.y;
            const D = Math.sqrt(dx * dx + dy * dy);

            if (D === 0) {
                id = 0;
            } else {
                id = Math.log2((2 * D) / keyWidth);
            }
            mt = (now - lastTime) / 1000; 
        }

        lastCenter = center;
        lastTime = now;

        const logEntry = {
            taste: key,
            ID: id !== null ? id.toFixed(2) : null,
            MT: mt !== null ? mt.toFixed(2) : null
        };

        logEntries.push(logEntry);
        updateLogDisplay();

        if (key === '=') {
            try {
                const result = eval(input);
                const rounded = parseFloat(result.toFixed(10)); // mby 2 oder 4 stattt 10
                display.textContent = rounded;
                input = rounded.toString();
                calcCount++;
                counterDisplay.textContent = `Anzahl durchgeführter Rechungen: ${calcCount}`;
            } catch {
                display.textContent = 'Fehler';
                input = '';
            }
        } else if (key === 'C') {
            input = '';
            display.textContent = '0';
        } else {
            input += key;
            display.textContent = input;
        }
    }

    function updateLogDisplay() {
        logDisplay.textContent = logEntries.map(e => JSON.stringify(e, null, 2)).join('\n');
    }
</script>

</body>
</html>