Skip to main content

How do I rotate one image that is on top of a second background image?

VSCode

================================

-- index.html code:

<!DOCTYPE html>
<html>
    <head>
       <meta charset="UTF-8">
       <meta name="viewport", content="width=device-width, initial-scale=1.0">
       <link rel="stylesheet" href="image.css">
    </head>
    <body>
        <div id="canvasContainer">
            <canvas id="canvas" width="900" height="520"></canvas>
            </div>
        <script src="image.js"></script>
    </body>
</html>

================================

-- image.js code:

const cCanvas = document.getElementById('canvas');
cCanvas.width = 600;
cCanvas.height = 300;
const cContext = cCanvas.getContext('2d');
const cBackgroundImage = new Image();
const cBackgroundWidth = cCanvas.width;
let lBackgroundHeight; 
const cCarImage = new Image();
const cCarImageWidth = 40; 
const cCarImageHeight = 100; 
let lCarImageX; 
let lCarImageY; 
document.addEventListener('DOMContentLoaded', (ev) => 
    {
        cBackgroundImage.onload = function () {
            cCarImage.onload = function () 
            {
              const cAspectRatio = cBackgroundImage.naturalWidth / cBackgroundImage.naturalHeight;
              lBackgroundHeight = cCanvas.height = cBackgroundWidth / cAspectRatio; 
              lCarImageX = cBackgroundWidth / 2 - cCarImageWidth / 2; 
              lCarImageY = lBackgroundHeight - cCarImageHeight; 
              cContext.drawImage(cBackgroundImage, 0, 0, cBackgroundWidth, lBackgroundHeight); 
              cContext.drawImage(cCarImage, lCarImageX, lCarImageY, cCarImageWidth, cCarImageHeight);
            }
            cCarImage.src = "Car.jpg"; 
        }
        cBackgroundImage.src = "Streets.jpg";
    }
)
document.body.addEventListener("keydown", e =>{
  e.preventDefault();
  switch(e.key){
    case 'ArrowUp':
      lCarImageY -= 10;
      break;
    case 'ArrowDown':
      lCarImageY += 10;
      break;
    case 'ArrowLeft':
      lCarImageX -= 10;
      break;
    case 'ArrowRight':
      lCarImageX += 10;
      break;
  }
    render();
})
function render(){
  cContext.clearRect(0, 0, cCanvas.width, cCanvas.height);
  cContext.drawImage(cBackgroundImage, 0, 0, cBackgroundWidth, lBackgroundHeight); 
  cContext.drawImage(cCarImage, lCarImageX, lCarImageY, cCarImageWidth, cCarImageHeight);
}

================================

-- This code puts a car on a street background. The arrow keys move the car on the street.

================================

I want the car to also turn 90 degrees when the keyboard letter "l" is entered.

================================

-- This was added to < body > html:

<div style="margin: 8px">
    <img id="CarRotate" src="Car.jpg" />
    </div>

================================

-- In image.js, this

const cCarImage = new Image();

was replaced with this.

// const cCarImage = new Image();
const cCarImage = document.getElementById('CarRotate');

================================

-- Two lines of code were deleted

document.addEventListener('DOMContentLoaded', (ev) => 
    {
        cBackgroundImage.onload = function () {
            // cCarImage.onload = function () 
            {
              ... 
            }
            // cCarImage.src = "Car.jpg"; 
        }
        cBackgroundImage.src = "Streets.jpg";
    }
)

================================

-- This was added to switch(e.key)

case 'l':
  cCarImage.style.transform = 'rotate(90deg)';
  break;

================================

-- Unfortunately, this displays "two" cars on the street. One car is moved by the arrows. The other car rotates.

What do I change to combine the movements into one car?

Streets.jpg => https://snipboard.io/4YgDaf.jpg

Car.jpg => https://snipboard.io/ptkWjJ.jpg

Via Active questions tagged javascript - Stack Overflow https://ift.tt/hgO1cxB
Labels:

Comments

Post a Comment

Popular posts from this blog

Confusion between commands.Bot and discord.Client | Which one should I use?

Whenever you look at YouTube tutorials or code from this website there is a real variation. Some developers use client = discord.Client(intents=intents) while the others use bot = commands.Bot(command_prefix="something", intents=intents) . Now I know slightly about the difference but I get errors from different places from my code when I use either of them and its confusing. Especially since there has a few changes over the years in discord.py it is hard to find the real difference. I tried sticking to discord.Client then I found that there are more features in commands.Bot . Then I found errors when using commands.Bot . An example of this is: When I try to use commands.Bot client = commands.Bot(command_prefix=">",intents=intents) async def load(): for filename in os.listdir("./Cogs"): if filename.endswith(".py"): client.load_extension(f"Cogs.{filename[:-3]}") The above doesnt giveany response from my Cogs ...
Post a Comment
Read more

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype
Post a Comment
Read more

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...
Post a Comment
Read more