drawimage Questions
14
I can use
val image = +imageResource(R.drawable.header)
and use DrawImage(image) to load image from Drawable Resource,
But how do I load a string url into the DrawImage(image)?. I've tried using...
Abecedarian asked 28/10, 2019 at 15:59
1
I am taking a picture from a video using this tutorial
HTML:
<canvas id="canvas" style="display:none;" ></canvas>
<div class="output">
<img id=...
Handicap asked 9/1, 2023 at 19:30
4
Solved
I have a video element with a canvas overlay. Then I have a drawing tool setup to draw over the video and a save button that does a drawImage from both the video and then the canvas to save a compe...
Amazing asked 14/11, 2013 at 21:0
5
Solved
I'm drawing an image to a canvas element. I then have code that depends on this process to be finished. My code looks like this:
var myContext = myCanvasElement.getContext('2d'),
myImg = new Imag...
Stalwart asked 26/6, 2012 at 12:44
3
Solved
Ok so I'm creating a game with JavaScript Canvas Elements and such. I've been able to load in TONS of Images, but on a select few, JavaScript replies with Errors such as
Uncaught TypeError: Fai...
Hyrcania asked 15/3, 2014 at 22:39
2
So, here's what I'm trying to do:
I want to load a video into a video element, but not have it played in the "normal" way.
Using a timed interval, calculated according to the movie's framerate, I w...
Empedocles asked 30/5, 2012 at 8:33
2
Solved
I am reading through "Making Isometric Social Real-Time Games with HTML5, CSS3 and Javascript."
I am not far into it, and I have run into a canvas problem that has ahd me stumped for most of the d...
Keeper asked 24/2, 2013 at 3:17
1
Solved
I'm writing one of those simple games to learn JS and I'm learning HTML5 in the process so I need to draw things on canvas.
Here's the code:
let paddle = new Paddle(GAME_WIDTH,GAME_HEIGHT);
new ...
Defend asked 21/4, 2020 at 5:56
3
Solved
I'm just trying to figure out how to get an image to draw on a canvas. I followed a tutorial on W3 schools, but when i tried it on my own it doesn't seem to be working. I copy and paste the code be...
Sanatorium asked 27/9, 2013 at 21:59
2
Solved
I'm copying an image. (My actual code is resizing the image but that's not relevant to my question.) My code looks something like this.
Image src = ...
using (Image dest = new Bitmap(width, heigh...
Ambit asked 18/5, 2012 at 20:2
1
Solved
I wrote a simple script that take a frame from a video and draw it to a canvas. My problem is that the colors are changing between the video and the drawn image.
I put here the result next to the ...
Insincere asked 25/8, 2017 at 14:48
3
Solved
I am experimenting with animation in <canvas> and can't work out how to draw an image at an angle. The desired effect is a few images drawn as usual, with one image rotating slowly. (This ima...
Meissen asked 25/9, 2010 at 10:23
3
Solved
I am trying to use canvas's drawImage method with video source, but it's not working in Android 4.4.2, tested with Chrome browser.
Here's my code:
$(function() {
var canvas = document.getElemen...
5
Solved
I am making a simple web app in mobile which allow visitor to capture photo by using html5 input[type=file] element. Then I will display it on the web for preview, and then visitor can choose to up...
Bihar asked 19/10, 2013 at 6:27
9
Solved
I am using a GDI+ Graphic to draw a 4000*3000 image to screen, but it is really slow. It takes about 300ms. I wish it just occupy less than 10ms.
Bitmap *bitmap = Bitmap::FromFile("XXXX",...);
/...
Diametrically asked 5/11, 2008 at 9:53
5
Solved
I have the following piece of HTML:
<style type="text/css">
#c{width:200px;height:500px}
</style>
<canvas id="c"></canvas>
<script type="text/javascript">
var i = n...
3
Solved
I'm trying to scale an image proportionately to the canvas. I'm able to scale it with fixed width and height as so:
context.drawImage(imageObj, 0, 0, 100, 100)
But I only want to resize the widt...
Opsonin asked 31/5, 2012 at 21:27
5
I'm trying to use drawImage to draw a semi-transparent PNG on a canvas element. However, it draws the image as completely opaque. When I look at the resource that's being loaded and load the actual...
Spline asked 23/1, 2012 at 19:23
4
Solved
It's possible to send a CanvasPixelArray obtained via getImageData to a worker script, and let the worker script manipulate the pixels in its background thread, and eventually post the manipulated ...
Knoll asked 17/11, 2011 at 16:11
1
Solved
I will assume this is some sort of compatibility issue.
Everything works perfectly in chrome, but in firefox the <canvas> simply doesn't draw anything.
function drawStage(stageNum) {
var ca...
Ledeen asked 10/1, 2016 at 15:2
2
Solved
If you consider the following image, it's a fairly basic icon, sized at 32x32. Around the icon is a transparent rectangle, although I filled in the four corners with a solid colour while testing.
...
3
Solved
I would like to draw an image opened with the HTML5 File API on a canvas.
In the handleFiles(e) method, I can access the File with e.target.files[0] but I can't draw that image directly using draw...
Stainless asked 21/7, 2011 at 12:8
4
I am drawing on a canvas with the following line:
ctx.drawImage(compositeImage, 0, 0, image.width, image.height, i, j, scaledCompositeImageWidth, scaledCompositeImageHeight);
This code has execut...
Cubeb asked 27/5, 2010 at 17:58
1
Solved
I'm facing a really bizarre issue when trying to scale and crop an image using the HTML5 canvas API across browsers.
Specifically, I'm working with trying to find the center of an image and crop a...
Anhwei asked 14/4, 2015 at 17:6
3
Solved
I want to draw an image from jpg file on canvas.
My code:
var canvas = document.getElementById('my_canvas');
var ctx = canvas.getContext('2d');
var imageObj = new Image();
imageObj.onload = fu...
Threesquare asked 3/4, 2013 at 17:7
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