{"id":3446,"date":"2026-09-15T01:40:10","date_gmt":"2026-09-14T17:40:10","guid":{"rendered":"http:\/\/www.contree-durban-corbieres.com\/blog\/?p=3446"},"modified":"2026-09-15T01:40:10","modified_gmt":"2026-09-14T17:40:10","slug":"how-to-draw-a-semi-circle-on-a-canvas-4153-ab8f83","status":"publish","type":"post","link":"http:\/\/www.contree-durban-corbieres.com\/blog\/2026\/09\/15\/how-to-draw-a-semi-circle-on-a-canvas-4153-ab8f83\/","title":{"rendered":"How to draw a semi – circle on a Canvas?"},"content":{"rendered":"

Drawing a semi – circle on a Canvas may seem like a simple task, but it involves a good understanding of the Canvas API and basic geometric concepts. In this blog post, I’ll guide you through the process of drawing a semi – circle on a Canvas, and also share some insights as a Canvas supplier. Canvas<\/a><\/p>\n

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Understanding the Basics of the Canvas<\/h3>\n

Before we start drawing a semi – circle, it’s essential to understand what a Canvas is. The HTML5 Canvas is an element that provides a graphics surface on a web page. Using JavaScript, we can manipulate this surface to draw shapes, animate objects, and create interactive graphics.<\/p>\n

To start using the Canvas, you need to create a <canvas><\/code> element in your HTML file. Here’s a basic example:<\/p>\n

<canvas id="myCanvas" width="400" height="400"><\/canvas>\n<\/code><\/pre>\n
In JavaScript, we can then access the Canvas and its 2D rendering context:<\/p>\n
const canvas = document.getElementById('myCanvas');\nconst ctx = canvas.getContext('2d');\n<\/code><\/pre>\n
Drawing a Semi – Circle: The Arc Method<\/h3>\n
The most common way to draw a semi – circle on a Canvas is by using the arc()<\/code> method of the 2D context. The arc()<\/code> method creates an arc (a part of a circle). The signature of the arc()<\/code> method is as follows:<\/p>\n
ctx.arc(x, y, radius, startAngle, endAngle, anticlockwise);\n<\/code><\/pre>\n