In normal i have canvas size 500x500 and it will create camera size (500,500)
But when i change
game.camera.width=5;
game.camera.height=5;
then visible area it the same? what will happen when change width and height camera, how to understand that thanks
Based upon the documentation and an older post from the creator of Phaser on the HTML5 Game Dev Forum where he said:
You're not doing anything wrong, you just can't change the camera dimensions - they match the game size at the moment.
and then in 2015 on the same thread:
So you can tell if something is within the camera bounds or not. Which is impossible if the camera doesn't have a size.
suggesting that things haven't changed since 2013, and the camera doesn't resize as you're expecting.
Testing as well suggests that things haven't changed either.
Related
Thanks for reading this question :)
Goal:
I am using Fabric.js as a base for image editor (crop and resize features for now mostly).
My goal is to load some high-quality image (like photos) rotate or crop it and then export as DataURL (in original quality or near to it).
Solution:
To add such a big photo on canvas and be able to export it bad with the same quality - I set width and height of canvas equal to image's width and height (2560 × 1600px) and then compress it using css to 640x400px (editor size). (I used https://stackoverflow.com/a/17035046 as a base)
In this case I still can export image in big dimension using canvas.toDataURL() - it will be about 2560x1600 (this is my goal).
How it works: http://jsfiddle.net/handmade/Lqsb0kwv/4/
Problem description:
I've got a problem after adding zoom feature (canvas.zoomToPoint(...)) to my editor and it is related to css width and height limitation of canvas.
Try to change size of image using controls in jsfiddle above and you will see an issue.
Works fine if...
...if I don't use css limitation: http://jsfiddle.net/handmade/Lqsb0kwv/5/
Questions:
I've read 90% of Fabric.js docs, examples, tutorials, questions here on Stack Overflow, but I didn't find a solution for my issue.
I am not sure that using css to limit canvas is a good practice.
I am not sure that my way of getting back changed image in big dimension is a good way.
Does anybody know better way to export image in good dimension?
Does anybody know if issue with scaling/rotating image after zoom (+limited by css) is a bug in Fabric.js?
Thank you for any answer!
I have an image of size 480x800 pixels and there is a icon on one corner which I need to place. What I want is that to ignore all touches on the transparent areas and detect only the area where the icon is.
I found a solution in SO to this problem but it just tells the code to be used. I need to know exactly where to put that code since I am a beginner and don't know much about cocos2d so I expect a step by step solution.
Cocos2d 2.0 - Ignoring touches to transparent areas of layers/sprites
Do not use glReadPixels because it affected by bugs in android drivers. You can translate CCTouch to CCPoint in image coordinates using convertTouchToNodeSpace, and read image pixel at given point.
Create CCImage from file that contains semi-transparent picture, and read one pixel at tap point; it should be {0,0,0,0} for transparent area.
Don't forget to check that tap is not outside picture, and create pixel index in CCImage::getData() array with formulae unsigned index = x * imageWidth + y.
Does anyone know if there is a workaround for this? Internet Explorer 10 and Window phone 8 are not able to correctly scale background SVG images when a user zooms. Looks like IE rasterizes the SVG on load.
Here is an example: The first image is the SVG as a background image. Zoom in on a MS Surface or Windows 8 phone and you'll see it blurs horribly.
The second image is the same SVG as an img tag. Zoom this on a Surface or Windows 8 mobile phone and it scales as you would expect (nice and clean).
Is there any property that can be added to make IE10 behave? Or is it merely a case of waiting for the folks at Redmond to fix it?
The problem is that IE, and other browsers such as Firefox rasterise the SVG before displaying it, so it will become blocky when zoomed.
The easiest way to fix this is to make the SVG file larger than is needed. For example double the size, or more if the user is likely to zoom in further. You can then resize the SVG image with CSS to display it at the correct size. This way the image will be naturally larger, so wont become blocky, unless you zoom in even further. At default zoom level the image is scaled down rather than up, which browsers usually handle better.
Edit: You can find further info on this issue under the “SVG and CSS Backgrounds” heading at http://dbushell.com/2012/03/11/svg-all-fun-and-games/
I am trying to do thing that is already done in default Android 2.3 camera application - rotation only for some elements (such as buttons) when changing orientation of the device.
For example, when I switch my phone to landscape orientation I don't need to change whole layout - I only need to rotate some UI elements.
Don't know about Camera application in Android 4, but in Android 2.2 it looks the same as I want.
Is it possible?
(and sorry for bad English, guys)
This is an old question but I've just stumbled across it by accident. In case anybody finds this and is stumped there are two easy solutions. Your elements support a 'rotate' attribute which can do most of the hard work for it (just set an angle), but beware this seems to change the canvas dimensions and can leave you with empty padding. There is also a Rotate Drawable which will help you rotate other drawables.
When the width of the brower is changed, the image's width or height is also changed dynamically, anyone knows how to do it?
And I found the image's max height of each rows is not the same.
Thank you very much.
I am sure Google's image application is a little more complicated than can be written in a single post, but you could mimic some of the effect with some clever use of jQuery. Here's a quick tutorial on a resizeable image grid using a slider -
Image resize tutorial
You would need to change the trigger from a slider to the resize event, but this has the basics you need.