Html – Update canvas on mouse move
The basic idea comes from the map of a game. According to the my code review, the map is a full-page canvas. I have no problem with drawing images on canvas. My question is how to detect map houses and…
Javascript – How to convert mouse position to canvas coordinate using object-fit: contain
Using object-fit: contain allow to resize a canvas to fit inside a container. This snippet is drawing a circle using mouse event position : canvas.width=1920; canvas.height=1200; const ctx=canvas.getContext("2d"); ctx.lineWidth = 10; ctx.strokeRect(0,0,canvas.width,canvas.height); canvas.onmousemove = (e) => { ctx.clearRect(0,0,canvas.width,canvas.height); ctx.strokeRect(0,0,canvas.width,canvas.height); ctx.beginPath();…
Css – html5 canvas spin wheel not stopping at winning color
i am trying to create a spinning wheel using canvas and html5. its working but my end goal is to try to point the arrow to the exact winning color. so for example if the winning color is the green…
The layering of my HTML items is messed up
I'm making a app in flask and I'm trying to have a canvas take up the full available width of my screen, then put my menu items on a different layer so that there still accessible. (I'm using bootstrap btw)…
Shopify – React Native Expo: The SignatureScreen from react-native-signature-canvas is not appearing on the screen
I'm trying to use the signature canvas from react-native-signature-canvas. I've imported it as stated in the npm docs and placed it in my code perfectly. I can't figure out why it doesn't show up on my screen. Here's my code:…
Javascript – string PNG conversion Returns Blurry Image
I'm making a website for makecode arcade here and I'm making a string to PNG function called ConvertAndDownload but when I download the image, its all blurry for example lets say that i have the string img1 2 3 4…
Can I render font onto an HTML canvas at a large size, and then downsample it to fit the canvas?
I have a small canvas: <canvas id="game-canvas" width="256" height="232"></canvas> I'm scaling it to fit the window with: html, body { padding: 0; margin: 0; overflow: hidden; image-rendering: pixelated; background: black; } canvas { background: black; width: 100vh; margin: auto; display:…
Html – set different color on click function in Canvas
I want to change color our button are Press then canvas inside text color change. var canvas = document.querySelector('#my-canvas'); var context = canvas.getContext('2d'); context.font = '48px serif'; context.fillStyle = 'red'; // sets text color to red context.fillText('Example text', 20, 65);…
Javascript – Obtaining the coordinate of a null value when using spanGaps with ChartJS?
I'm wondering if ChartJS exposes an API for plugins that allows us to obtain the coordinate of a null point that has been "Spanned" by ChartJS? For example as illustrated in this question ChartJS enables smooth curves through null points…
Html – How to insert a svg image marker inside canvas image
I have a problem to solve. In my canvas image I put a marker but this is image type "png", I would like to have an icon svg so I can change the colour. This code is working, i need…