小编bjz*_*bjz的帖子

OpenSceneGraph使用没有'.h'扩展名的头文件.有没有办法让Xcode将语法识别为C++,从而允许我突出显示并跳转到定​​义等？

例如:没有突出显示:

好的,所以我知道你可以使用Objective-C制作一个NSTask来运行命令行工具:

NSTask *task;
task = [[NSTask alloc] init];
[task setLaunchPath: @"/usr/bin/gdb"];
[task launch];

我只是想知道是否有办法与交互式命令行工具进行通信gdb.这将涉及使基于用户交互的命令输入(如run,kill或quit用gdb),然后在此基础上输出该信息反应.

我正在尝试Xtend.是否可以制作构造函数？看起来很简单,但是当我尝试这样的事情时,我遇到了错误:

class Scope extends Rect {

    public Scope(){
        super()
    }

}

我正在做一些使用FreeGLUT的OpenGL教程.

显然,这是你在mac上构建和安装它的方式:

CPPFLAGS="-I/usr/X11R6/include" ./configure --prefix="${PWD}/../"
make
make install

不幸的是,当我执行make命令时,这本身就会给我一个错误:Undefined symbols for architecture x86_64

做完工作后,我发现第一行的改进是:

CPPFLAGS="-I/usr/X11R6/include -L/usr/X11R6/lib" LDFLAGS="-L/usr/X11R6/lib" ./configure --prefix="${PWD}/../"

不幸的是,当我执行make命令时,我仍然收到错误:

gcc -DHAVE_CONFIG_H -I. -I../../..   -I/usr/X11R6/include -L/usr/X11R6/lib -I../../../include  -g -O2 -Wall -pedantic -MT smooth_opengl3-smooth_opengl3.o -MD -MP -MF .deps/smooth_opengl3-smooth_opengl3.Tpo -c -o smooth_opengl3-smooth_opengl3.o `test -f 'smooth_opengl3.c' || echo './'`smooth_opengl3.c
smooth_opengl3.c:101: error: redefinition of typedef ‘PFNGLGENBUFFERSPROC’
/usr/X11R6/include/GL/glext.h:5080: error: previous declaration of ‘PFNGLGENBUFFERSPROC’ was here
smooth_opengl3.c:102: error: redefinition of typedef ‘PFNGLBINDBUFFERPROC’
/usr/X11R6/include/GL/glext.h:5078: error: previous …

我正在尝试在我的Xcode项目中使用glew,但我得到了这个: Apple Mach-O Linker (Id) Error... Undefined symbols for architecture x86_64

我正在使用我从sourceforge网站下载的当前版本的glew .

我试图在OSX 10.7上运行它:

/**
 * simple.d
 */

import std.stdio;
import derelict.sdl.sdl;
import derelict.sdl.macinit.SDLMain;
import derelict.opengl.gl;

pragma(lib, "/usr/local/src/Derelict2/lib/libDerelictUtil.a");
pragma(lib, "/usr/local/src/Derelict2/lib/libDerelictSDL.a");
pragma(lib, "/usr/local/src/Derelict2/lib/libDerelictGL.a");

int main(string[] args) {

    // Load Derelict
    writeln("Loading SDL...");
    DerelictSDL.load();

    // Initialise SDL
    if( SDL_Init( SDL_INIT_EVERYTHING ) == -1 ) {
        throw new Exception("SDL initialization failed");
    }

    // Enable Double Buffering
    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);

    // Set up the screen 
    SDL_Surface* screen = SDL_SetVideoMode(640, 480, 0, SDL_OPENGL);
    if (screen == null) {
        throw new Exception("Screen is null");
    }
    SDL_WM_SetCaption("Simple", "Simple");

    // Print …

我使用Derelict3和GLFW 3在使用Lion(osx 10.7.4)上运行OpenGL 3.2时遇到了麻烦.

这是我的测试程序:

module glfw3Test;

import std.stdio, std.conv;
import derelict.glfw3.glfw3;
import derelict.opengl3.gl3;

string programName = "glfw3Test";
int width = 640;
int height = 480;

GLFWwindow window;

void main() {
    // load opengl
    DerelictGL3.load();
    // load GLFW
    DerelictGLFW3.load();

    if(!glfwInit()) {
        glfwTerminate();
        throw new Exception("Failed to create glcontext");
    }

    writefln("GLFW:     %s", to!string(glfwGetVersionString()));

    window = glfwOpenWindow(width, height, GLFW_WINDOWED, programName.ptr, null);
    if(!window) {
        glfwTerminate();
        throw new Exception("Failed to create window");
    }

    // Request opengl 3.2 context
    // based off the GLFW FAQ: …

在Ada中,您可以定义所谓的" mod "和" range "类型:

type Unsigned_n is mod 2**n;
type Range_Type is range -5 .. 10;

这些是如何在语言机器级别实现的？在对这些类型执行操作时,您会遇到什么样的性能损失？

我正在使用Derelict来完成我的OpenGL工作,而且我已经厌倦了不得不cast(GLvoid*) Vec3.sizeof像glVertexAttribPointer这样的功能.所以我以为我会做一个功能,glsizeof

import std.stdio;

alias void GLvoid;

struct Vec3 {
    float x, y, z;
}

GLvoid* glsizeof(T)(T t) {
    return cast(GLvoid*) t.sizeof;
}

void main() {

    Vec3 vec = { x: 2.5, y: 4.8, z: 3.2 };

    writeln(cast(GLvoid*) vec.sizeof);  // prints 'C'
    writeln(cast(GLvoid*) Vec3.sizeof); // prints 'C'
    writeln(cast(GLvoid*) int.sizeof);  // prints '4'


    // Now to try using glsizeof :)

    GLvoid* size_vec  = vec.glsizeof;   // call glsizeof using a uniform function call
    GLvoid* size_vec3 = Vec3.glsizeof;
    GLvoid* size_int …