I'm trying to move a png or gif along a predetermined path inside a <canvas> element. Can anyone provide a few resources or code samples to get me started?
Thanks in advance!
You may want to look at this link: https://developer.mozilla.org/En/Canvas_tutorial:Basic_animations for more information, but basically your best bet is to erase the canvas, then redraw everything having moved the image, which you drew with 'drawImage'.
The x,y coordinates will change based on your path.
Related
I have created a Netlogo program in which I imported cars using following code:
import-drawing "F:\\BMW.png"
It imports the image as background and stretches the image in whole screen. I want to resize it, but cannot do it using set size 2 as its used for resizing of built in shapes (as far as I know). Can someone please guide me how can I resize my PNG image and also set it to a specific coordinates (say 0,14).
Any help will be appreciated. Thanks
It won't change anything for how your model works, so you can just use:
set-patch-size XXX
If you dont want to guess at what patch size you want, you can just drag the size smaller until it's about the size you want, then click on info for GUI and it will have a patch size there.
I'm not sure what you mean by resize your png however.
I recently have a project which invovles attempting to automatically "mock-up" images with a standard logo. For example, I have 1000 images of products, and I have one logo image that needs to be placed (over-layed) on top of each image. I know I can do this with ColdFusion's imageOverLay() function. However, I assume this always puts the overlayed image right in the middle of the underlying image (assuming they have the same width and height parameters). I was wondering if there was any way possible to specify and X/Y coordinate of the top-left corner of the overlaying image, and have the overlayed image placed in that location?
An example of a site:
http://www.internalsearch.expandedproductsearch.com/catalog/48/
You'll notice that all of the products have an image properly placed on the products. And I can assure you this wasn't done by hand. They must have a way to specifying where the overlaying image should go for each product, and then it just automatically puts the overlaying image (logo) in that spot. Can anyone think of any other way to do this? Is there some sort of advanced image library I could use with ColdFusion?
Any information would be greatly appreciated! Thank you.
I believe this got answered over on the Adobe forums and you are correct #Leigh; imagePaste was the solution.
I still can't comment on a question so posting this as an answer.
I'd like to append a border (20px white) to an image, save as a new jpeg image (orginal image with a border), I don't know how do I start. Can anyone give me a direction or code example?
Thanks
You have two ways to do it:
On your UI, wrap the image with a Border element with the correct settings and use new WriteableBitmap(borderElement, null) to create a new WriteableBitmap which you can then save using the SaveJpeg extension method.
Your other option is to use the WriteableBitmapEx class library to graphically add the graphical elements you want.
I've used both. The advantages for (1) is that there's less hassle in the sense of adding a dependeny on another DLL. The advantage in (2) is that you don't need to mess with your UI to create the image.
I am building an Eclipse RCP application, based on eclipse 3.5.
I'd like to modify an image at runtime. The image is loaded and will be used as an icon, but depending on the situation, I'd like to add a filter on the image to give it a red or orange color, depending on some user-configured value.
It's the image transformation that I'm interested in. I already know how to get the image and ask a component to display it.
Has anybody done that? Thanks for your help :)
There are possibly many choices for doing just that, you can use ImageIO to load an image as BufferedImage and then get the Graphics2D and modify it as you wish. When you are finished modifying you can reaasign the newly created image back into your component which holds the original image and thats it.
You can of course look for some libraries to allow you easier image manipulation, maybe jmagick or something similar.
You can use DecoratingLabelProvider with a suitable ILabelDecorator. See also FAQ What is a label decorator?
Seen a good charts plugin I want to use:
http://www.jqplot.com/tests/stackedTests.php
But for my visitors, they may want to save this as an image (via right click, copy as image menu item) or alternatively a button that says save as image or something similar.
So is it possible to save the canvas in any given state as an image file?
I think toDataURL could help you :)
If you are willing to use a pre-made library, you can try using Canvas2Image.
Otherwise there are a few Canvas methods that Canvas2Image wraps around and explain in more detail in the above site, namely the toDataURL method in the Canvas object that returns the data base64 encoded in the image format that you require. It's not 100% cross-browser, I think, but it's the "right" way of getting it.