Quaternions are good for interpolate rotations between them. so far so good. If I have a networking game, will it suffice to transfer the rotation as vector3f or should I use a quaternion? To make the game smoother I may have to interpolate between the last sent rotation and the current one. But can I interpolate rotations between two ...
Hello, I'm a C++ programmer with very extensive server programming experience. I'm however fairly bored at the moment and I decided to tackle a new area: 3D game programming, for learning purposes. Additionally I think this learning project may turn out to be good resume material in the future should I decide to work in this area. Inste...
I am writing a program in OpenGL and I need some sort of interfacing toolbar. My initial reactions were to use a GUI, then further investigation into C++ I realized that GUI's are dependent on the OS you are using (I am on Windows). Therefore, I decided to use QT to help me. My Question is if I am taking the best/appropriate approach to...
I'm reading pixels from an area of the main screen via NSOpenGLContext. Now I would like to draw a rect around that area to indicate where it actually is. How would I do this? My first thought was the "Cocoa way": create a transparent fullscreen NSWindow and a custom NSView to draw the rectangle path. But that feels a bit too complicated...
Any idea whats wrong with my code? when i execute glCompressedTexImage2D() the program just crashes (comes the Windows XP crash message thing...) Im trying to load DDS image without mipmaps, the image format is DDS DXT1 Am i missing some include file, or what did i do wrong? I downloaded the included files from: http://sourceforge.net/...
Hey! I write graphics apps for the iPhone and I'm looking to port my most recent app, 'Layers,' to the Android platform. Layers is painting app that allows users to draw on the screen and create multi-layered paintings with different brushes, colors, etc... and export to PSD. It's got desktop sync, a smudge tool, lots of good stuff... ht...
I am drawing a 5 corner star with GL_LINES. When I use the GL_POLYGON, it distorts the shape of star and connects the first and last vertex. Help please :( ? ...
I have this assignment due that requires the usage of FLTK. The code is given to us and it should compile straight off of the bat, but I am having linking errors and do not know which other libraries I need to include. I currently have "opengl32", "fltk_gl", "glu32", and "fltk" included (-l), each of which seem to reduce the number of e...
I'm looking for a comprehensive and up-to-date reference (preferably in book form) on OpenGL. I'd like to find something that covers OpenGL 3.0 but also need information on OpenGL 2.1 for older hardware (my understanding is that DirectX 10 level hardware is necessary for OpenGL 3 functionality). I'm strongly considering the OpenGL Super...
I'm triying to make a 2D real-time plot. I've tried with modifying the osciloscope example of qwt, tried to use QGraphicsView, and QPainter to reach high framerate drawing. I'm using 8 channels to plot data wich is arriving from a rs232 port. I take a sample every 10 ms. Maybe i've used the QPainter in a wrong way, but i couldn't draw ve...
I'm trying to load an image file and use it as a texture for a cube. I'm using SDL_image to do that. I used this image because I've found it in various file formats (tga, tif, jpg, png, bmp) The code : SDL_Surface * texture; //load an image to an SDL surface (i.e. a buffer) texture = IMG_Load("/Users/Foo/Code/xcode/test/lena.bmp")...
Although there seem to be very few up to date references for OpenGL 3.x itself, the actual low level manipulation of OpenGL is relatively straight forward. However I am having serious trouble trying to even conceptualise how one would manipulate VBOs in order to render a dynamic world. Obviously the immediate mode ways of old are non ap...
hi, I'm trying to run an opengl application in vs 2008 but the compiler keeps throwing me the error: Error 1 fatal error LNK1104: cannot open file 'C:\Documents.obj' ,and everything I've tryed doesn't do the trick , so any indication would be very appreciated ! ...
I am attempting to make an image stretch effect on the iphone. I make a vertex array and shift the texture data for each indice within an arbitrary radius of a background image. Then make the following calls to display: int n = gridSize_.x * gridSize_.y; glEnableClientState( GL_VERTEX_ARRAY); glEnableClientState( GL_TEXTURE_COORD_ARRAY...
What are the best libraries/frameworks for doing 3D and/or Zoom interfaces in Java? I'd like to be able to do some prototyping of creating new types of interfaces for navigating within data and representing object graphs/relationships. Low and no cost options are better. Open Source is also a plus. UPDATE: The higher level the api the ...
Hi everyone, I'm currently trying to work out how to get world coordinates from JOGL - at the moment it only returns x = 0.0, y= 0.0 and z = 0.0 no matter where I click. What am I doing wrong? public double[] getMousePosition(int x, int y){ int viewport[] = new int[4]; double modelview[] = new double[16]; double projection[] = new...
Hello, So I have what is essentially a game... There is terrain in this game. I'd like to be able to create a top-down view minimap so that the "player" can see where they are going. I'm doing some shading etc on the terrain so I'd like that to show up in the minimap as well. It seems like I just need to create a second camera and s...
Reading the GLSL 1.40 specification: Fragment outputs can only be float, floating-point vectors, signed or unsigned integers or integer vectors, or arrays of any these. Matrices and structures cannot be output. Fragment outputs are declared as in the following examples: out vec4 FragmentColor; out uint Luminosity; ...
I am using an opengl es iphone application. What is the most accurate way to calculate the frames per second of my application for performance tuning? ...
I have been following this tutorial series for OpenGL: GLUT: http://www.lighthouse3d.com/opengl/glut/ I have reached the stage of implementing camera controls using the keyboard: http://www.lighthouse3d.com/opengl/glut/index.php?8 When doing the advanced tutorial it stops working. I've pretty much just copied and pasted it. When I ...