Tagged Questions

2
votes
0answers
66 views

Html 5 canvas rectangle removing and after draw

I tried to draw a rectangle ,erase it and redraw another rectangle in a canvas. The result of this three operation is that there are two rectangle . Html 5 api javascript : ...
2
votes
0answers
49 views

Convert Canvas DataURL to image for posting to Facebook

I have a canvas that I am saving to a DataURL, and I could right click it and save it as an image to my files, but how do I convert it to an image either on the client-side or server-side(Rails) for ...
2
votes
0answers
86 views

Trying to aim the particals to camera while rotating and alert message on intersecting in three js?

Trying to create event handler on the particals with alert message on sphere and also these should aim always on camera something similar to http://www.google.com/culturalinstitute/worldwonders/ ( ...
2
votes
0answers
354 views

GWT - allow mouse event propagation between two superimposed canvases

I have a GWT application containing two canvas instances which are superimposed, i.e. have the same location on screen, one on top of the other. (See ...
2
votes
0answers
153 views

Canvas listener don't work after using Pixastic plugin

I have a strange conflict between Pixastic and my canvas listeners. When I use a Pixastic function on my canvas the listeners of my canvas after this operation don't work. I analyzed my canvas using ...
2
votes
0answers
281 views

ExCanvas not working in IE7 and IE8 IFrame

I am using IFrame as a popup for IE7 and IE8 but am not able to make ExCanvas work on it. While I checked it out on the developers tools, I was able to see the changes in my canvas tags but was not ...
2
votes
0answers
123 views

follow a body in html5 canvas and box2d

Am using the physics engine box2dweb , my problam is that I have a body and I want to follow him , example my canvas width:500px height:500px and the body coordination is (700,200) so I cant see him ...
2
votes
0answers
220 views

context.getImageData strangeness in IE9

I'm using canvasContext.getImageData(0, 0, 1, 1).data to retrieve pixel information on an image. It works great in all browsers except IE9. At random times the pixel information is not available, it ...
1
vote
0answers
26 views

CamanJS - replace instance

If I have an image that I apply a filter to, e.g. Lomo filter, is there way to make that the current Caman instance? Meaning, if I then want to then play about with the brightness on the image that I ...
1
vote
0answers
29 views

How to save HTML5 Canvas as a png image on Android client?

I'm developing a web application, in which every client gets a canvas to draw on screen. I want to facilitate the client to save this canvas as a png image on his own computer/tablet. I used the ...
1
vote
0answers
75 views

Phonegap continuously moving html5 canvas

I am making a bike race game in javascript using the HTML5 canvas. The game is made up of three canvases: one for background, one for the level and a small moving canvas(only moving up/down on the ...
1
vote
0answers
33 views

attach drop target to dragged object

In Kineticjs is it possible to attach a droptarget to the element being dragged. I need to highlight the target when drop happens. The code i am using is circle.on("dragstart", function(e) { ...
1
vote
0answers
86 views

HTML5 Canvas game development without using images

I am working on a rpg game development. My concern is- I don't want to use any image. I want to draw everything (seriously, everything..) using canvas drawing methods (lineto, bezierCurveTo, ...
1
vote
0answers
147 views

excanvas drawimage doesn't work on IE8

Hi I have managed to make excanvas work in IE8 for simple examples however I couldn't make the following canvas example which contain drawimage work at IE8. Does anyone have any experience with ...
1
vote
0answers
94 views

How to effeciently draw multiple line shape in HTML5?

I've been working on a hobby project, which is rebuilding the old DOS game Gotcha in HTML5. The part with drawing blocks has been done almost (aside from some nasty bugs), but the thing I'm struggling ...

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