176 Discussion / Question Topics
Remove Filter  | Hello, I was partaking in the global game jam (where you have to try to make a game in 48 hours). I got my game pseudo-finished, but I cannot get it to render the scene properly. Here is the code related to the rendering: Code for opengl initialization: glClearColor(0.5f,0.5f,0.5f,1.0f); float …  |
| | Hello, I am using Code::Blocks, and recently any time I try to compile any program I get the errors "stray '\302' in program" and "stray '\206' in program" about every 20-30 lines. I know how to fix these (by deleting the non printing character(s) in the line in question) but … |
| | Hello, I was wondering how to make the windows explorer popups that many programs use. I want the one that browses files to either open or save a file rather than requiring the user to blindly type the filename.  |
| | I want to be able to make a program that emulates what a human at a computer can do. IE: I want to be able to read the visual information of a window (a 2d array of colour would be perfect) and be able to send virtual key syms and … |
| | Hi, I am wondering if there is a somewhat simple way to output extended ascii values in c. Basically I am thinking actually about unicode characters, stored in ints. Is there an easy way to do this, or would it require a custom gui console? |
| | I have two bounding boxes defined by the following values: m1.min.x;//the min x value of model 1 m1.min.y;// " " y " " " " m1.min.z;// " " z " " " " m1.max.x;// " max x " " " " m1.max.y;// " " y " " " " m1.max.z;// … |
| | Whenever I tell anybody under the age of 20 that I am a programmer, they always ask the same question sooner or later: "Can you hack my computer." I tell them that even if I could I wouldn't. They follow up by telling me to just make a pop-up or … |
| | I have been having this problem since I started using stl containers awhile ago. Basically, when I debug them with the default Code::Blocks MinGW debugger I find that it gives far too much irrelevant information such as iterators and other 'behind-the-scenes' stuff. I can make it better by telling it … |
| | Hello, It has been awhile since I have posted here since I have been horribly without computer for awhile now. Anyways, I was wondering if anybody knew where to find, or could make up, a lorem ipsum in C++. What I mean is that Lorem Ipsum makes a good filler … |
| | I have recently been accepted to software engineering at the university of waterloo, and as such my parents have agreed to go 50/50 on a nice computer to bring to waterloo. At first I was looking at a laptop, but then some IT friends of mine suggested that I could … |
| | I have created a custom font for programming and I wish to use it in code::blocks. The thing is that code::blocks only allows for standard fonts (as far as I can tell) and so I cannot get it to recognise my font (even though it is a ttf). [Here](http://www.4shared.com/file/4avU0Xuh/lucidaprogrammer.html) is … |
| | I want to use opengl to draw some stuff, not to the screen but to a data buffer instead. Is this possible? IE: uint32_t *data; glSetDrawTarget(data,GL_RGBA|GL_UNSIGNED_INT_8_8_8_8);//this is the line I cannot figuro out how to do glBegin(GL_TRIANGLES); //... glEnd(); //and now my buffer is full of custom data glSetDrawTarget(NULL,NULL);//reset to … |
| | I am wondering about what keyboard layouts the people that use this forum are using. I would suspect a higher quantity of Dvorak users (like myself) then most places. In my opinion there is no reason not to switch from QWERTY to Dvorak other than to switch from QWERTY to … |
| | I used to use a tutorial for windows console API, but the website was taken down :(. So now I need to ask how to do these things (which ALL were included on the website) in the console with windows API: * Mouse events (clicks and unclicks) * Cursor seeking … |
| | I have a C++ console project in Code::Blocks and I have set breakpoints to test an error. I have set the build for the project to produce debugging symbols for the debug build. I built it, then when I hit debug it just ignored my breakpoints and skipped to the … |
| | I have now read a total of 5 different winsock tutorials and I still do not get how sockets work! Could somebody please explain how to make a program that will allow n computers to share data with each other. As an example could somebody make a 'game' with the … |
| | I am trying to understand how sockets work with winsock, but I just don't get it. I basically want to be able to create these functions: SomeDataType ConnectToComputer(const char *ConnectionName);//connect to the connection named ConnectionName SomeDataType CreateConnection(const char *ConnectionName);//create a connection called ConnectionName bool ReadData(SomeDataType, unsigned char *outdata, int outsize);//read … |
| | I have the following code to draw a scene to opengl, but nothing shows up, just a blank screen! void glCameraDraw(const LABglCameraHANDLE h, LABglWindowHANDLE LABglGlobals) { if (!h->isProjected)//check to see if h's projection is loaded { glMatrixMode(GL_PROJECTION); glLoadIdentity(); //LABglGlobals->LABglDimensions are the screen dimensions gluPerspective(h->fov,(float)LABglGlobals->LABglDimensions.right/ (float)LABglGlobals->LABglDimensions.bottom, h->front,h->back); h->isProjected=true; } //set the … |
| | I need to calculate chi squared cdf from x->infinity with n=255 degrees of freedom. I cannot seem to get it to work. You can find formulae for chi squared distributions using google. Here is my non-functional approximation code: double riemannsum(double(*fnc)(double),double dx, double xmin, double xmax) { double ret=0; double x=xmin; … |
| | I have an array of data of the form: union colour { unsigned int argb; struct{ unsigned char a; unsigned char r; unsigned char g; unsigned char b; }bigendian; struct{ unsigned char b; unsigned char g; unsigned char r; unsigned char a; }littleendian; }; struct sprite { int w,h;//stores the … |
| | I am using code::blocks and have written a dll. I am currently testing it but am getting tired of having to compile it, copy the DLL, DEF, H and A files into a test project, and then compiling the test project every time I need to fix something. Is there … |
| | I am having a linker error in a file of some 3000 lines that I cannot seem to reproduce. I was wondering if anybody had any ideas where the problem could be. Basically I have a function in a header file and whenever I go to link my project it … |
| | I never knew that near and far were reserved until I made a struct for bounding boxes like this: struct boundingBox { float near, far; float left,right; float top,bottom; }; Does anybody know what near and far do, because I got the error that the declaration does not declare anything. … |
| | I want to test some graphics work I am doing with the Utah Teapot model. The issue is that all the data I can find on it uses bezier patches (which I have no clue how to render) does anybody know how I could get the data in a form … |
| | I want to find a range of values that a valid pointer cannot achieve, but can store. Basically this is my situation: typedef struct myNumberTAG { //stuff }*myNumberHANDLE; //A bunch of functions that work with myNumberHANDLEs: ///Not Shown //Some constants const myNumberHANDLE numberOne=0x1; const myNumberHANDLE numberTwo=0x2; const myNumberHANDLE numberInfinity=0x3; const … |
| | I am sorry to have to make a new thread for this, but as I cannot reply to any threads I cannot think of another easy option. Basically when I enter my message and click the submit button, a red box shows up and says "Message field required" How can …  |
| | I currently have the following code for a sprite struct (c-style for use in DLL): typedef struct LABglSpriteTAG { unsigned int glTexture; int w; int h; LABglColour *data; bool compiled; }*LABglSpriteHANDLE; And the following function: void LABglSpriteConvolute(LABglSpriteHANDLE spr, int w, int h, int *kernel) { size_t dim=spr->w*spr->h; LABglColour *out=new LABglColour[dim]; …  |
| | I am wondering how to perform a 2D image blit with openGL. I used to use SDL and it was easy, but with opengl I end up making a rectangle with texture coords that is sunk a little into the screen. Is there any way to perform a 'real' blit? … |
| | I am working on a game making (or really just general program making, but my question applies to games) DLL for opengl. It is almost done but the collision detection is a little bit slow since it has to calculate bounding boxes for each object repeatedly. I was thinking of … |
| | I recently looked at [URL="http://www.songho.ca/opengl/gl_vbo.html"]this[/URL] description of VBOs and a sample implementation of them. When I ran the executable, it was significantly faster with no VBOs than with them. I don't understand why it should be slower with the VBOs than without. Can anybody explain why? |
| | I am trying to find a bug in my new and (theoretically) improved syntax highlighter program. I have made 3 versions now and have been able to debug them all with ease. Unfortunately my debugger does not do well with std containers as it shows ALL the information they contain … |
| | How exactly do you use a glConvolutionFilter2d() call? I know about convolution filters and kernels, but am not sure exactly how to implement them. Just a simple example with say... a gaussian blur, would be helpful. |
| | I understand that data on computers can be compressed (I see it all the time with zip files and jpegs) but I was wondering just how compression works. Thinking it through, if you data is represented by 1s and 0s then it can be corresponded 1 to 1 with a … |
| | How do you make shadows in OpenGL. I have been using the NeHe tutorials, but I do not understand their shadow lesson. Can anybody help? |
| | I have the following collision detection function that checks the collision between the line defined by lstart -> lend and the triangle defined by points a,b and c with a normal of nvec. I want to know if it will work and what to put into the missing part. (it … |
| | A few friends and I made a bet to see who could single-handedly (we defined that as a team of up to 10 people, all of whom must be personal friends) make the best video game over the course of two years. I am planning on making a first-person horror … |
| | I have a program that dynamically allocates an array and uses it. The thing is that under certain situations this array will get infinitely long. As such I would like to know if/when the array has gotten too long and then start saving it to a file (where length will … |
| | Hello, I have been working with opengl and other graphics libraries and they all require the bits per pixel of the screen on initialization of a window. My question is, is there any way to get the system's preffered bits per pixel? or that of the monitor? |
| | A friend of mine recently asked me to help debug some code. I looked through it and it was riddled all over with goto statements. I know why he uses them (he used to program mainly in assembly and batch) and I tried to explain why he should try to … |
| | I am getting ready to write a programming competition on Tuesday (the Canadian Computing Competition) and I remember that last year it said that only standard libraries can be used. I was having trouble deciding which libraries are standard. I ended up using windows.h and when I suddenly realized that … |
| | To what extent does the system endianness effect a program. I know that doing pointer assignment will be affected, and unions are too, but what about bitshift operators? Do they apply to the value, merely emulating real bitshifts, or do they apply to the bits themselves? Are there any other … |
| | Is this a viable BIGENDIAN test: [CODE]int tmpvaluethatwillneverreallybeused=1; bool bigendian=(*(char*)(&tmpvaluethatwillneverreallybeused)==1); void myFunction() { if (bigendian) { //do big endian specific code } else { //do little-endian specific code } }[/CODE]  |
| | I have some code in C++ that uses an std::vector of std::strings to store an array of strings. I need to convert it into C. I thought that I would just create c versions of the functions I need (vector.back,vector.push_back,string.operator+=) but am getting lost in the double pointers. Can anybody … |
| | I was wondering if there is any way using the mingw g++ compiler to make code that acts like this: [CODE]#define myLanguageBlock(X) doMyLanguageBlock(#X) void doMyLanguageBlock(const char* code){/*this executes the code as if it were in another language, I have already written this function*/} int main() { myLanguageBlock( this is all … |
| | How do I do assembly code with the mingw-g++ compiler. All the websites I checked say that this should work: [CODE]int add(int a, int b) { int c=0; asm("mov %[aVal],%eax;add %[bVal],%eax;mov %eax,%[cVal]" : [cVal] "=i" (c) : [bVal] "i" (b) : [aVal] "i" (a)); return c; }[/CODE] But instead I …  |
| | I was just wondering how exit worked? Does it use some lower-level language feature in its implementation? Is it compiler-specific? What is it? (I am talking about the function in stdlib.h btw) |
| | I have an alpha beta interface and have implemented a tic tac toe class from it. For some reason my AI tends to occasionally make stupid moves (such as making a fork rather than blocking a 2 in a row) I was wondering if anybody can see where I went … |
| | I was working on a project when I thought that maybe a ::. operator would look funny in some code. Just for fun I typed that into the global scope area like this: [CODE]::. int main() { //etc...[/CODE] and my code completion software said too many results to display. My … |
| | I have this code for AlphaBeta implementation and have created versions of the required interfaces that work perfectly (I have debugged them quite thoroughly). Unfortunately my algorithm keeps returning an empty vector and score of 0. Here is the code: [CODE]#include <vector> #include <limits.h> using namespace std; typedef vector<unsigned char> … |
| | How can I get the coordinates of the output of a truetype font. I need to write a function like so: [CODE]struct CartesianCoord{float x,float y}; CartesionCoord *printfont(const char *filename,char ch, int &len) { /*Read the font in filename.ttf and convert it to a set of vertices describing the resulting shape. … |
The End.