From b8585d990a1233902a4b112a9e381bb299d6c244 Mon Sep 17 00:00:00 2001 From: adanrsantos Date: Wed, 16 Oct 2024 18:41:26 -0500 Subject: [PATCH] still testing out the canvas --- static/canvas.html | 3 +-- static/canvas.js | 62 ++++++++++++++++++++++++++++++++++++++++------ 2 files changed, 56 insertions(+), 9 deletions(-) diff --git a/static/canvas.html b/static/canvas.html index f4e0c3a..5a36a46 100644 --- a/static/canvas.html +++ b/static/canvas.html @@ -14,10 +14,9 @@
- +
diff --git a/static/canvas.js b/static/canvas.js index f88c632..b3de37e 100644 --- a/static/canvas.js +++ b/static/canvas.js @@ -1,23 +1,70 @@ const canvas = document.getElementById("canvas"); -const toolbar = document.getElementById("toolbar"); -const strokePicker = document.getElementById("stroke"); const ctx = canvas.getContext("2d"); -const canvasOffsetX = canvas.offsetLeft; -const canvasOffsetY = canvas.offsetTop; - -canvas.width = 850; +canvas.width = 500; canvas.height = 500; +const dataSize = 1000; +let x; +let y; +let pixelSize = canvas.width / dataSize; +const centerPixel = pixelSize / 2; + +function draw() { + ctx.fillRect(x, y, pixelSize, pixelSize); +} + +canvas.addEventListener("mousedown", (e) => { + x = e.clientX - canvas.getBoundingClientRect().left - centerPixel; + y = e.clientY - canvas.getBoundingClientRect().top - centerPixel; + draw(); +}) + +//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"){ @@ -53,4 +100,5 @@ canvas.addEventListener("mouseup", (e) => { ctx.beginPath(); }); -canvas.addEventListener("mousemove", draw); \ No newline at end of file +canvas.addEventListener("mousemove", draw); +*/ \ No newline at end of file