diff --git a/static/canvas.js b/static/canvas.js index 06df99a..191e672 100644 --- a/static/canvas.js +++ b/static/canvas.js @@ -3,9 +3,39 @@ const ctx = canvas.getContext("2d"); const canvasSize = 500; const dataSize = 1000; +const gridCount = 10 ; canvas.width = canvasSize; canvas.height = canvasSize; +//let pixelSize = canvasSize / dataSize; +let pixelSize = canvasSize / gridCount; +const centerPixel = pixelSize / 2; + +function drawGrid() { + ctx.strokeStyle = '#000'; // Set grid line color + ctx.lineWidth = 1; // Set grid line width + + // Draw horizontal lines + for (let i = 0; i <= gridCount; i++) { + let y = i * pixelSize; + ctx.beginPath(); + ctx.moveTo(0, y); // Start the line at the left edge (x = 0) + ctx.lineTo(canvasSize, y); // Draw to the right edge (x = canvasSize) + ctx.stroke(); + } + + // Draw vertical lines + for (let i = 0; i <= gridCount; i++) { + let x = i * pixelSize; + ctx.beginPath(); + ctx.moveTo(x, 0); // Start the line at the top edge (y = 0) + ctx.lineTo(x, canvasSize); // Draw to the bottom edge (y = canvasSize) + ctx.stroke(); + } +} + +drawGrid(); + class Point { // new Point(x, y) constructor(x, y) { @@ -51,98 +81,13 @@ class Point { } } -let pixelSize = canvasSize / dataSize; -const centerPixel = pixelSize / 2; - -function draw(x, y) { - ctx.fillRect(x, y, pixelSize, pixelSize); +function draw(point) { + ctx.fillRect(point.x, point.y, pixelSize, pixelSize); } canvas.addEventListener("mousedown", (e) => { let x = e.clientX - canvas.getBoundingClientRect().left - centerPixel; let y = e.clientY - canvas.getBoundingClientRect().top - centerPixel; - draw(x, y); -}) - -//const toolbar = document.getElementById("toolbar"); -//const strokePicker = document.getElementById("stroke"); -//const canvasOffsetX = canvas.offsetLeft; -//const canvasOffsetY = canvas.offsetTop; -//canvas.width = 150; -//canvas.height = 150; - -/* -let isPainting = false; -let lineWidth = 5; -let strokeColor = "#000000"; -let startX; -let startY; - -function drawGrid(lineInterval, lineColor) { - // Set the color of the grid lines - ctx.strokeStyle = lineColor; - ctx.lineWidth = 1; // Set the gridline thickness - - // Draw vertical grid lines - for (let x = 0; x <= canvas.width; x += lineInterval) { - ctx.beginPath(); - ctx.moveTo(x, 0); // Start from top of the canvas - ctx.lineTo(x, canvas.height); // Draw line down to the bottom - ctx.stroke(); - } - - // Draw horizontal grid lines - for (let y = 0; y <= canvas.height; y += lineInterval) { - ctx.beginPath(); - ctx.moveTo(0, y); // Start from the left of the canvas - ctx.lineTo(canvas.width, y); // Draw line across to the right - ctx.stroke(); - } - ctx.beginPath(); -} - -// Call the drawGrid function with 50px intervals and a light gray color -drawGrid(10, '#A9A9A9'); - -toolbar.addEventListener("click", e => { - if (e.target.id === "clear"){ - ctx.clearRect(0, 0, canvas.width, canvas.height); - - drawGrid(10, '#A9A9A9'); - } - - if (e.target.id === "lineWidth"){ - lineWidth = e.target.value; - } -}); - -strokePicker.addEventListener("input", (e) => { - strokeColor = e.target.value; -}); - -const draw = (e) => { - if (!isPainting){ - return; - } - ctx.lineWidth = lineWidth; - ctx.strokeStyle = strokeColor; - ctx.lineCap = "round"; - - ctx.lineTo(e.clientX - canvasOffsetX, e.clientY - canvasOffsetY); - ctx.stroke(); -} - -canvas.addEventListener("mousedown", (e) => { - isPainting = true; - startX = e.clientX; - startY = e.clientY; -}); - -canvas.addEventListener("mouseup", (e) => { - isPainting = false; - ctx.stroke(); - ctx.beginPath(); -}); - -canvas.addEventListener("mousemove", draw); -*/ + let point = new Point(x, y) + draw(point); +}); \ No newline at end of file