How do you render a BMP, JPEG, or PNG image file in 3D with DirectX in Windows? (E.g. let's say I want to render four images so that they look like a cubicle or something.)
I've seen this done easily with a Java OpenGL library (JME I think?), but it seems like DirectX needs textures, and doesn't take in regular images. :(
Is this correct? If so, how do I convert it to a texture programmatically?
DirectX 9: D3DXCreateTextureFromFile
DirectX 10: D3DX10CreateTextureFromFile and D3DX10CreateShaderResourceViewFromFile
DirectX 11: D3DX11CreateTextureFromFile and D3DX11CreateShaderResourceViewFromFile
Read the details of each, but most all of the popular file formats are supported. (includes BMP, JPG, and PNG)
Go here: http://www.jblearning.com/catalog/9781598220537/
Download the "source code part II" from the "samples and resources" section. Look at the chapter 7 source code samples. Optionally, you could buy the book.
Related
On OSX I converted a multi-page PDF file to PNG and (somehow) it created a multi-page PNG file.
Is there an extension to the PNG format that allows this? Or is this not something I can validly create?
~~~~
To clarify, this is a PNG file, per the builtin file command and the identify command from imagemagick.
$ file algorithms-combined-print.png
algorithms-combined-print.png: PNG image data, 1275 x 1650, 8-bit/color RGBA, non-interlaced
$ identify algorithms-combined-print.png
algorithms-combined-print.png PNG 1275x1650 1275x1650+0+0 8-bit sRGB 3.537MB 0.000u 0:00.000
And here is a pastebin of the command identify -verbose algorithms-combined-print.png: http://pastebin.com/hw1yuRKa
What is notable from that output is that the pixel count is Number pixels: 2.104M which corresponds to one page. However, the file size is 3.537MB, which is clearly sufficient to hold all the pages.
Per request, here is the output of pngcheck: http://pastebin.com/aCRMEd9L
PNG does not support "multipage" images.
MNG is a PNG variant that supports multiple images - mostly for animations, but it's not a real PNG image (diffent signature/header), and has never become popular.
APNG is a similar attempt, but more focused on animations - it's more popular and alive, though it's less official - it's also PNG compatible (a standard PNG viewer, unaware of APNG, will display it as a single PNG image).
Another possible explanation is that your image is actually a TIFF image with a wrong .png extension, and the viewer ignores it.
The only way to know for sure is to look inside the image file itself (at least to the first bytes)
Update: given the pngcheck output, it seems to be a APNG file.
I opened one PNG file in Inkscape and exported it as SVG. When I opened that file with notepad I came to know that the PNG file is embedded within it. If the conversion happened then the resulting file should have only SVG related tags. It shouldn't embed the image within it. Or Am I doing anything wrong.
Note: Save as option also producing the same kind of file. I am using Inkscape version 0.48 in Windows 7 - 64 bit.
This is a bit of an old thread, but it comes up early in Google so I thought I'd contribute something.
In Inkscape, you must do a trace to change the image into SVG. Look at the Path | Trace bitmap menu item and play with the options on that screen.
After creating the trace, you can remove your source image and have a pure svg in your saved file.
I've found it helpful to create layers in Inkscape and move the source image to one layer and put the trace on another layer to let me make quick comparisons using the 'hide layer' buttons.
BTW, your source image can be anything - bmp, jpg, png, etc.
A .png file is a raster image file. In order to convert it to a vector graphic based format like .svg and have it be "native" svg rather than an included image you are going to either have to use a program that can rasterize it or in Inkscape trace the bitmap and turn it into paths. Inkscape provides information on tracing: http://inkscape.org/doc/tracing/tutorial-tracing.html
This is not technically a programming question, but I believe its still relevant to software developers.
My question is: What image editors are there that are targeted at programmers. Specifically editors with the features that the older generation of image editors had. Modern image editors (such as The Gimp) seem to abstract away the vagaries of each image format.
A programmers editor would let one:
Set the index of the transparent color when working with formats like GIF.
View and edit the color table for palletized formats.
(obviously) load and save a wide variety of formats (gif, png, tiff, pcx, bmp, jpeg, ico etc.) without loosing any metadata relevant to the format.
view and edit of said metadata.
work with multiframe (animated gif) or multi image (ico) formats.
edit the alpha channel for image formats with alpha.
Do such beasts no longer exist?
I use Gimp for such purposes...
The only trouble with it - it is uncomfortable with ico files.
If you are comfortable with a command-line interface, I think you can do all the above with ImageMagick or GraphicsMagick.
Paint.Net for Windows or Pinta for most platforms, not as complicated as Gimp or Photoshiop but with enough features.
If i am making a image sharing service website using the standard file upload form what images can i say it supports, other then jpg, png, gif. Is there a list that shows what browsers supports what? I know that jpg png and gif are most common but what are the others. I want to be sure.
Honestly, that's pretty much all you should be concerned with. Any other file formats (like svg) are not widely supported enough.
I would suggest converting other types of files to those 3
Examples:
jpeg (simple renaming)
bmp
tiff
pcx
I have a need to select a portion of a .png file, with specific cordinators, and delete this area then save the file back with the same name.
I would appreciate if you can help to come up with a VBScript script that can accomplish this task.
It would be great if all proesses happen in the background, but it would be ok too if the image file has to be open and visible. Thanks a bunch!!!
A PNG file, like any other binary file can be edited with CMD or VBS.
A PNG file layout is as follows:
File header
"Chunks" within the file
Pixel format
Transparency of image
Compression
Interlacing
Animation
Read the PNG format in RFC 2083 to know how to edit/create a PNG file at binary/bit level.
To speed up the editing process, libraries are available for application level editing.
Here are some VBA codes for image manipulation.
ImageMagick also provides libraries that can be accessed via VBS for image editing.
Here's a VBScript Image Class for bmp and pcx files (which PNG can be converted to before editing via WIA).
Loadpicture function described here doesn't seem to support PNG, but this discussion might solve it.
The Windows Image Acquisition Library v2.0 supports PNG, BMP, JPG, GIF and TIFF image formats, and comes with Windows Vista and later versions. Sample scripts are available to demonstrate "image manipulation using the ImageFile object". The Vector.ImageFile property also "creates an ImageFile object from raw ARGB data".
More sample codes here & here show how to rotate, flip, scale, crop, etc with WIA Image constants in vbs. To remove unwanted areas of image (with given coordinates), use the crop function.
Here's a discussion of WIA 2.0 image editing on stackoverflow.
VBScript doesn't have any image editing functions, so you need an external tool for that. For example, GIMP can do image processing from the command line (see here). ImageMagick provides a scriptable component in addition to the command-line interface (details here).
To run a command line from a VBScript script, you can use the WShShell.Run method. To create an instance of a COM scriptable component, use the CreateObject function.