Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'canvas' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.
console.log("Usage: exe -i -o [-c ]");
process.exit(1);
}
let configPath = args.c;
if (typeof configPath === "undefined") {
configPath = path.join(process.cwd(), "settings.json");
} else {
if (!path.isAbsolute(configPath)) {
configPath = path.join(process.cwd(), configPath);
}
}
const settings: CLISettings = require(configPath);
const img = await canvas.loadImage(imagePath);
const c = canvas.createCanvas(img.width, img.height);
const ctx = c.getContext("2d");
ctx.drawImage(img, 0, 0, c.width, c.height);
let imgData = ctx.getImageData(0, 0, c.width, c.height);
// resize if required
if (settings.resizeImageIfTooLarge && (c.width > settings.resizeImageWidth || c.height > settings.resizeImageHeight)) {
let width = c.width;
let height = c.height;
if (width > settings.resizeImageWidth) {
const newWidth = settings.resizeImageWidth;
const newHeight = c.height / c.width * settings.resizeImageWidth;
width = newWidth;
height = newHeight;
}
if (height > settings.resizeImageHeight) {
}
var res = {
boxes: detectedBoxes,
names: detectedNames,
inferenceTime: endTime - startTime
};
console.log(res);
// create canvas and context
const width=1024
const height=768
const canvas = createCanvas(width, height);
const context = canvas.getContext('2d');
// create image from buffer
const img = new Image()
img.onload = () => {
// draw image in context
context.drawImage(img, 0, 0, width, height);
// draw boxes from model's detection boxes
for (let i = 0; i < res.boxes.length; i++) {
const box = res.boxes[i];
context.fillStyle = 'rgba(255,255,255,0.2';
context.strokeStyle = 'white';
context.fillRect(box[1] * width, box[0] * height, width * (box[3] - box[1]),
height * (box[2] - box[0]));
context.font = '15px Arial';
context.fillStyle = 'white';
context.fillText(res.names[i], box[1] * width, box[0] * height, box[0] * height);
context.lineWidth = 2;
context.strokeRect(box[1] * width, box[0] * height, width * (box[3] - box[1]),
height * (box[2] - box[0]));
const fontScale = 1.2,
canvas = createCanvas(width, height),
ctx = canvas.getContext('2d');
// TODO: 渐变背景
// const grd=cxt.createLinearGradient(0, 0, width, height);
// grd.addColorStop(0, "#FF0000");
if (bgColor) {
ctx.fillStyle = bgColor;
ctx.fillRect(0, 0, width, height);
}
if (bgImage) {
let image = new Image();
if (bgImage.startsWith('http')) {
image = await loadImage(bgImage);
} else if (bgImage.startsWith('data:image/')) image.src = bgImage;
else image.src = await readFile(bgImage);
ctx.drawImage(image, 0, 0, width, height);
}
let fontSize = Number(fontStyle.split(' ')[0].replace('px', ''));
ctx.font = fontStyle;
ctx.fillStyle = fontColor;
if ((fontSize * bookName.length) / height > 0.6) {
ctx.font = fontStyle.replace(`${fontSize}px`, `${fontSize / fontScale}px`);
fontSize /= fontScale;
}
const fontHeight = fontSize + fontSize / 4;
const canvas = createCanvas(imageD, imageD);
const ctx = canvas.getContext('2d');
ctx.quality = 'fast';
ctx.patternQuality = 'fast';
// resize their image so we don't have to do it each time.
const ctxResize = canvas.getContext('2d');
ctxResize.drawImage(theirImage, 0, 0, imageD, imageD);
const buffer = canvas.toBuffer('image/jpeg', undefined);
theirImage.src = Buffer.from(buffer);
// loop over all images.
const length = (images.length > 65) ? 65 : images.length;
for (let i = 0; i < length - 1; i += 1) {
ctx.globalAlpha = 1;
const background = new Image();
background.src = Buffer.from(images[i]);
ctx.drawImage(background, 0, 0, imageD, imageD);
// get buffer and resize our image to our length
ctx.globalAlpha = 0.5;
ctx.drawImage(theirImage, 0, 0, imageD, imageD);
encoder.addFrame(ctx);
}
encoder.finish();
return await myAccumulator.getBuffer();
} catch (error) {
console.error(error);
}
return undefined;
},
loadComplete (file) {
// Draw the image
const ctx = GetContext(this.canvas);
ctx.drawImage(file.data, 0, 0);
const imageData = GetImageData(ctx);
const bounds = GetBounds(imageData);
console.log(bounds);
ctx.strokeStyle = '#ff00ff';
ctx.strokeRect(bounds.x, bounds.y, bounds.width, bounds.height);
}
loadComplete (file) {
// Draw the image
const ctx = GetContext(this.canvas);
ctx.drawImage(file.data, 0, 0);
const imageData = GetImageData(ctx);
console.log(imageData.width, 'x', imageData.height);
console.log('Index 0', GetXY(imageData, 0)); // 0x0
console.log('Index 4', GetXY(imageData, 4)); // 1x0
console.log('Index 40', GetXY(imageData, 40)); // 10x0
console.log('Index 1280', GetXY(imageData, 1280)); // 0x1
console.log('Index 41088', GetXY(imageData, 41088)); // 32x32
console.log('Index 254888', GetXY(imageData, 254888)); // 42x199
console.log('Index 4148', GetXY(imageData, 4148)); // 77x3
console.log('Index 227876', GetXY(imageData, 227876)); // 9x178
console.log('Index 255996', GetXY(imageData, 255996)); // 319x199
const Canvas = require("canvas"),
fortnite = require("fortnite-9812"),
fs = require("fs"),
CronJob = require("cron").CronJob,
Discord = require("discord.js");
const { resolve } = require("path");
// Register assets fonts
Canvas.registerFont(resolve("./assets/fonts/Burbank-Big-Condensed-Bold-Font.otf"), { family: "Burbank" });
const langList = fs.readdirSync("./languages/").map((f) => f.split(".")[0]);
const applyItemName = (canvas, text) => {
const ctx = canvas.getContext("2d");
// Declare a base size of the font
let fontSize = 40;
do {
ctx.font = `${fontSize -= 5}px Burbank`;
} while (ctx.measureText(text).width > 260);
return ctx.font;
};
/**
* Delete old png files
*/
constructor () {
this.canvas = Canvas(512, 256);
BackgroundColor(this.canvas, 'rgb(0, 0, 50)');
AddToDOM(this.canvas, 'game');
this.ctx = this.canvas.getContext('2d');
this.ctx.fillStyle = 'rgba(255, 255, 255, 1)';
this.ctx.font = '14px Courier';
this.master = new MasterClock();
this.clock1 = this.master.add(1000/60); // 60fps
this.clock2 = this.master.add(1000/30); // 30fps
this.clock3 = this.master.add(1000); // 1fps
this.master.init(() => this.update());
// Draw the image
const ctx = GetContext(this.canvas);
ctx.drawImage(file.data, 0, 0);
const imageData = GetImageData(ctx);
console.log(imageData.width, 'x', imageData.height, 'len', imageData.data.length);
console.log('0 x 0 - index', GetIndex(imageData, 0, 0));
console.log('1 x 0 - index', GetIndex(imageData, 1, 0));
console.log('10 x 0 - index', GetIndex(imageData, 10, 0));
console.log('0 x 1 - index', GetIndex(imageData, 0, 1));
console.log('32 x 32 - index', GetIndex(imageData, 32, 32));
console.log('42 x 199 - index', GetIndex(imageData, 42, 199));
console.log('77 x 3 - index', GetIndex(imageData, 77, 3));
console.log('9 x 178 - index', GetIndex(imageData, 9, 178));
console.log('319 x 199 - index', GetIndex(imageData, 319, 199));
}
loadComplete (file) {
// Draw the image
const ctx = GetContext(this.canvas);
ctx.drawImage(file.data, 0, 0);
const imageData = GetImageData(ctx);
console.log(imageData.width, 'x', imageData.height, 'len', imageData.data.length);
console.log('0 x 0 - index', GetIndex(imageData, 0, 0));
console.log('1 x 0 - index', GetIndex(imageData, 1, 0));
console.log('10 x 0 - index', GetIndex(imageData, 10, 0));
console.log('0 x 1 - index', GetIndex(imageData, 0, 1));
console.log('32 x 32 - index', GetIndex(imageData, 32, 32));
console.log('42 x 199 - index', GetIndex(imageData, 42, 199));
console.log('77 x 3 - index', GetIndex(imageData, 77, 3));
console.log('9 x 178 - index', GetIndex(imageData, 9, 178));
console.log('319 x 199 - index', GetIndex(imageData, 319, 199));
}