bmp

How to load a bmp on GLUT to use it as a texture?

由 别来无恙 提交于 2019-11-27 15:53:26
问题 I've been searching all around for a simple solution to add sprites to my OpenGl GLUT simple moon lander game in c++ and it appears I must use bmp's since they're easiest to load and use them as textures on a rectangle. How exactly can I load the bmp's as textures though? 回答1: Look my simple c implementation function to load texture. GLuint LoadTexture( const char * filename ) { GLuint texture; int width, height; unsigned char * data; FILE * file; file = fopen( filename, "rb" ); if ( file ==

How do I create a BMP file with pure Python?

由 佐手、 提交于 2019-11-27 15:14:44
问题 I need to create a black and white BMP file with pure Python. I read an article on wikipedia, BMP file format, but I am not good at low level programming and want to fill this gap in my knowledge. So the question is, how do I create a black and white BMP file having a matrix of pixels? I need to do this with pure Python, not using any modules like PIL. It is just for my education. 回答1: construct is a pure-Python library for parsing and building binary structures, protocols and file formats.

cannot convert parameter 1 from 'char *' to 'LPCWSTR'

由 浪子不回头ぞ 提交于 2019-11-27 14:39:36
问题 Im trying to load a BMP file AUX_RGBImageRec *LoadBMP(char *Filename) // Loads A Bitmap Image { FILE *File=NULL; // File Handle if (!Filename) // Make Sure A Filename Was Given { return NULL; // If Not Return NULL } File=fopen(Filename,"r"); // Check To See If The File Exists if (File) // Does The File Exist? { fclose(File); // Close The Handle return auxDIBImageLoad(Filename); // Load The Bitmap And Return A Pointer } return NULL; // If Load Failed Return NULL } this has come from an example

C++: What's the simplest way to read and write BMP files using C++ on Windows?

由 强颜欢笑 提交于 2019-11-27 14:28:09
I would like to load a BMP file, do some operations on it in memory, and output a new BMP file using C++ on Windows (Win32 native). I am aware of ImageMagick and it's C++ binding Magick++ , but I think it's an overkill for this project since I am currently not interested in other file formats or platforms. What would be the simplest way in terms of code setup to read and write BMP files? The answer may be "just use Magick++, it's the simplest." Related Question: What is the best image manipulation library? When developing just for Windows I usually just use the ATL CImage class EasyBMP if you

Creating a BMP file (bitmap) in C

由 回眸只為那壹抹淺笑 提交于 2019-11-27 12:23:36
问题 I'm trying to make a bitmap in C, just from code. I'm currently trying to make a very easy .bmp image, with a height of 1px and a width of 4 pixels, with all white pixels. I have read the format description and tried to apply it. This resulted in the following code: char bitmap[1000]; void BMPmake() { // -- FILE HEADER -- // // bitmap signature bitmap[0] = 'B'; bitmap[1] = 'M'; // file size bitmap[2] = 66; // 40 + 14 + 12 bitmap[3] = 0; bitmap[4] = 0; bitmap[5] = 0; // reserved field (in hex.

BufferedImage to BMP in Java

由 ◇◆丶佛笑我妖孽 提交于 2019-11-27 06:53:49
问题 I have a BufferedImage object and I want to encode it to the BMP format and save it to disk. How do I do this? In JPEG it's ok: BufferedImage img; //here is an image ready to be recorded into the hard disk FileOutputStream fout = new FileOutputStream("image.jpg"); JPEGImageEncoder jencoder = JPEGCodec.createJPEGEncoder(fout); JPEGEncodeParam enParam = jencoder.getDefaultJPEGEncodeParam(img); enParam.setQuality(1.0F, true); jencoder.setJPEGEncodeParam(enParam); jencoder.encode(img); fout.close

Getting the pixel value of BMP file

由 大城市里の小女人 提交于 2019-11-27 03:33:53
问题 i got a question for reading an bmp image. How can i get the pixel value(R, G, B values) in an bmp image? Can anyone help me using the C programming language? 回答1: The easy way would be to find a good image manipulation library for your chosen platform and use that. Linux ImLib / GDK-Pixbuf (Gnome/GTK) / QT Image (KDE/Qt) should be able to do what you need. Windows I'm not familiar with the appropriate system library, but an MSDN Search for "Bitmap" is probably a good place to start. Mac OSX

read pixel value in bmp file

由 允我心安 提交于 2019-11-27 02:58:44
How can I read the color value of 24bit BMP images at all the pixel [h*w] in C or C++ on Windows [better without any 3rd party library]. I got Dev-C++ A working code will be really appreciated as I've never worked on Image reading & have come to SO after Googling [if you can google better than me, plz provide a link]. You can try this one: unsigned char* readBMP(char* filename) { int i; FILE* f = fopen(filename, "rb"); unsigned char info[54]; fread(info, sizeof(unsigned char), 54, f); // read the 54-byte header // extract image height and width from header int width = *(int*)&info[18]; int

C++: Convert text file of integers into a bitmap image file in BMP format

由 若如初见. 提交于 2019-11-27 02:24:40
问题 I have a text file being saved by a matrix library containing a 2D matrix as such: 1 0 0 6 0 4 0 1 1 Where each number is represented with a colored pixel. I am looking for some insight as to how I'd go about solving this problem. If any more information is required, do not hesitate to ask. EDIT: Another approach I've tried is: fwrite(&intmatrix, size,1, bmp_ptr); where I pass in the matrix pointer, which does not seem to output a readable BMP file. The value of size is the rows*cols of

Android : save a Bitmap to bmp file format

由 旧街凉风 提交于 2019-11-26 23:24:02
问题 I have a Bitmap in memory and I need to save it in a bmp file (using the bmp file format). Is there any way to do it on Android ? (I read a lot of post suggesting to use the png format - which is loss-less - but, that's not what I need: I really need the bmp format ). I already have some code to save it in jpeg or png using the Bitmap.compress method : /** * Save data to file using format. * When format is null : the bitmap will be saved in bmp format **/ public void writeBitmapToFile(Bitmap
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