glut

问题 A week ago, when I first tried to work with GLUT and followed this tutorial it worked without any errors. Now, a week later I installed the same software, same libraries, but every time I try to compile the project I get these errors (and it highlights a line in the glut.h file): obj\Debug\main.o(.text+0x1c)||In function `glutInit_ATEXIT_HACK':| C:\Program Files\CodeBlocks\MinGW\include\GL\glut.h|486|undefined reference to `__glutInitWithExit@12'| obj\Debug\main.o(.text+0x3d)||In function

问题 I have a grid with cubes and i want to fill the cubes with two different colors and with 3 different images(.bmp). So every cube is filled with colours or images. I wrote a code and when i press the <> button the grid is filled with 5 different colours. Can anyone tell me how can i change my code to fill the grid with 3 different images(randomly)? Here is my code: void randomFilling(); void myprint(); struct square{ int v1x, v1y; int v2x, v2y; int v3x, v3y; int v4x, v4y; int color; }; struct

问题 I'm using opengl, using the GLUT and GLEW libraries to create a plugin for a certain application. This plugin doesn't start with a simple int main(argc, argv). So i can't pass these values to glutInit(). I tried something like this: glutInit(0, NULL); <--- Crash GLenum err = glewInit(); But i crashed when it tried to call the glutInit() function. Can i reconstruct those params some how, so that it won't crash and still be able to use the Glut library..?? 回答1: You can do it like this :

问题 I am new to Haskell and I am building a chess game using OpenGL (using Graphics.UI.GLUT ) for UI. I am trying to render PNG images for chess pieces. I read that images can be converted to TextureObject and then rendered, but could not find any helpful resources to know how to do it. This is what my code looks like for generating the chess board drawSquare :: BoardSquare -> IO () drawSquare ((x,y,z),(r,g,b)) = preservingMatrix $ do color $ Color3 r g b translate $ Vector3 x y z drawCube --

问题 I managed to draw a bezier curve like: glColor3f(0,1,0); glBegin(GL_LINE_STRIP); for (int i = 3; i < nPt; i+=3) { glColor3f(0,0,0); for (float k = 0; k < NLINESEGMENT+1; k++) { float x = pow(1.0-k/NLINESEGMENT,3)*ptList[i-3].x + 3*(k/NLINESEGMENT)*pow(1.0-k/NLINESEGMENT, 2) * ptList[i-2].x + 3*(1.0-k/NLINESEGMENT)*pow(k/NLINESEGMENT, 2) * ptList[i-1].x + pow(k/NLINESEGMENT, 3)*ptList[i].x; float y = pow(1.0-k/NLINESEGMENT,3)*ptList[i-3].y + 3*(k/NLINESEGMENT)*pow(1.0-k/NLINESEGMENT, 2) *

问题 The situation is as follows: There is a remote Linux server (no GUI), which builds the OpenGL scene. Objective: Transfer generated image(s) to client windows machine I can not understand some thing with offscreen rendering, read a lot of literature, but still not well understood: Using GLUT implies setting variable DISPLAY. If I right understand means remote rendering via x11. If I run x11 server on windows (XWin server) machine everything works. If I try to run without rendering server ,

问题 I have a pic.bmp that I'm attempting to tile onto a 3 x 2 rectangular flat surface for a demo I'm making. I'm attempting to keep the aspect ratio of the bmp in tact but I still want to tile it across that surface. Right now I have the surfaces vertices as (0,0,0), (3,0,0), (0,2,0) and (3,2,0). How can I apply this bmp to the flat surface and tile it? What is the best way to do this in GLUT & OpenGL? 回答1: See this NeHe lesson for a sample. To do tiling just write something like this: glBegin

问题 The program should simulate a planet rotating around another planet. I use gltranslatef to let the planet move around the bigger planet, but the problem is that the planet should hide when is over the bigger planet, because dz is -0.5. But if I test the program I always see the red planet over the blue one. Another problem I have: the planet rotates too fast, how do I slow it? #include <OpenGL/OpenGL.h> #include <GLUT/GLUT.h> #include "utility.h" GLfloat dx=0.0; GLfloat dz=-0.5; bool plus

问题 I'm currently working on a project where an andoid app that I've written controls and object in my OpenGL window on the PC. Ive got the OpenGL window to do what I want and ive got the data from my android device to stream to a terminal. However I need the data being streamed to the terminal to be used by the OpenGL object. When I try and run them in the same script it just gets stuck in the 'glutMainLoop' and never reaches a point where connection to my device is established. I know this is a

问题 I'm trying to draw a rectangle from user input that collects x1,y1 coordinates from left click, and then specifies x2,y2 from release of the left click. I save the coordinates based on this mouse action successfully (based on cout<< statements confirming the coords are saved) but nothing is displayed after the left button is released. Here is what I've tried: (keep in mind, nothing crashes, so there is a logic error) void display(void) { glClear(GL_COLOR_BUFFER_BIT); glPushMatrix(); glColor3f