This commit is contained in:
Jens Cornelsen
2024-12-09 14:57:33 +01:00
parent 8971fb26b0
commit 82386ec878
2 changed files with 196 additions and 1 deletions

View File

@@ -1,6 +1,6 @@
---
import Layout from "#layouts/Layout.astro";
import Layout from "#layouts/LayoutCAD.astro";
import Widget2 from "#components/Widget.svelte";
---
@@ -14,5 +14,112 @@ import Widget2 from "#components/Widget.svelte";
<Widget2 client:load />
</div>
<div class="controls">
<button onclick="clearCanvas()">Clear</button>
</div>
<canvas id="cadCanvas" width="800" height="600"></canvas>
<div class="log">
<strong>Captured Lines:</strong>
<ul id="line-log"></ul>
</div>
<script>
const canvas = document.getElementById('cadCanvas');
const ctx = canvas.getContext('2d');
const lineLog = document.getElementById('line-log');
const pixelToMeter = 0.01; // Conversion factor: 1 pixel = 0.01 meter
const gridSize = 5; // Size of each grid cell in pixels
let startX = null;
let startY = null;
let capturedLines = [];
// Snap a coordinate to the nearest grid point
function snapToGrid(value) {
return Math.round(value / gridSize) * gridSize;
}
// Draw the grid
function drawGrid() {
ctx.beginPath();
ctx.strokeStyle = "#e0e0e0"; // Light gray grid lines
ctx.lineWidth = 0.5;
// Draw vertical lines
for (let x = 0; x <= canvas.width; x += gridSize) {
ctx.moveTo(x, 0);
ctx.lineTo(x, canvas.height);
}
// Draw horizontal lines
for (let y = 0; y <= canvas.height; y += gridSize) {
ctx.moveTo(0, y);
ctx.lineTo(canvas.width, y);
}
ctx.stroke();
}
// Clear the canvas and reset logs
function clearCanvas() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
capturedLines = [];
startX = null;
startY = null;
drawGrid(); // Redraw the grid after clearing
updateLineLog();
}
// Update the captured lines log
function updateLineLog() {
lineLog.innerHTML = capturedLines
.map((line, index) => {
const lengthInMeters = calculateLineLengthInMeters(line.startX, line.startY, line.endX, line.endY);
return `<li>Line ${index + 1}: Start (${line.startX}, ${line.startY}), End (${line.endX}, ${line.endY}), Length: ${lengthInMeters.toFixed(2)} m</li>`;
})
.join('');
}
// Calculate the length of a line in meters
function calculateLineLengthInMeters(x1, y1, x2, y2) {
const dx = x2 - x1;
const dy = y2 - y1;
const lengthInPixels = Math.sqrt(dx * dx + dy * dy);
return lengthInPixels * pixelToMeter;
}
// Mouse events
canvas.addEventListener('mousedown', (e) => {
const endX = snapToGrid(e.offsetX);
const endY = snapToGrid(e.offsetY);
if (startX !== null && startY !== null) {
// Draw the final line
drawLine(startX, startY, endX, endY);
// Capture the line details
capturedLines.push({ startX, startY, endX, endY });
updateLineLog();
}
// Update the start position for the next line
startX = endX;
startY = endY;
});
// Drawing functions
function drawLine(x1, y1, x2, y2) {
ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.lineTo(x2, y2);
ctx.stroke();
}
// Initialize canvas
drawGrid(); // Draw the grid when the page loads
</script>
</Layout>