我开始使用OpenGL。我需要使用glaux.h做一个项目。我的问题是我正在运行Mac OS X Lion，所以我不能使用glaux。
我在网上搜索，我发现了一些试图取代glaux的代码。代码很好，但它们使用Windows Api变量。显然我不能使用它们。以下是我需要使用glaux阅读的代码：
#include <stdio.h> // Header File For Standard Input/Output
#include <stdlib.h>
#include <GLUT/glut.h>
#include <OpenGL/gl.h>
#include <OpenGL/glu.h>
#include "bmp.h"
#include <string.h>
const int W_WIDTH = 500; // PreselecciÛn del ancho de la ventana
const int W_HEIGHT = 500; // PreselecciÛn del alto de la ventana
bool keys[256]; // Array Used For The Keyboard Routine
bool active=1; // Window Active Flag Set To TRUE By Default
bool fullscreen=TRUE; // Fullscreen Flag Set To Fullscreen Mode By Default
bool fullscreen=0; // Fullscreen Flag Set To Fullscreen Mode By Default
GLuint texture[1]; // Storage For 1 Texture
GLuint box; // Storage For The Box Display List
GLuint top; // Storage For The Top Display List
GLuint xloop; // Loop For X Axis
GLuint yloop; // Loop For Y Axis
GLfloat xrot; // Rotates Cube On The X Axis
GLfloat yrot; // Rotates Cube On The Y Axis
static GLfloat boxcol[5][3]=
{
{1.0f,0.0f,0.0f},{1.0f,0.5f,0.0f},{1.0f,1.0f,0.0f},{0.0f,1.0f,0.0f},{0.0f,1.0f,1.0f}
};
static GLfloat topcol[5][3]=
{
{.5f,0.0f,0.0f},{0.5f,0.25f,0.0f},{0.5f,0.5f,0.0f},{0.0f,0.5f,0.0f},{0.0f,0.5f,0.5f}
};
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); // Declaration For WndProc
// Build Cube Display Lists
GLvoid BuildLists()
{
box=glGenLists(2); // Generate 2 Different Lists
glNewList(box,GL_COMPILE); // Start With The Box List
glBegin(GL_QUADS);
// Bottom Face
glNormal3f( 0.0f,-1.0f, 0.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
// Front Face
glNormal3f( 0.0f, 0.0f, 1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
// Back Face
glNormal3f( 0.0f, 0.0f,-1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
// Right face
glNormal3f( 1.0f, 0.0f, 0.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
// Left Face
glNormal3f(-1.0f, 0.0f, 0.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
glEnd();
glEndList();
top=box+1; // Storage For "Top" Is "Box" Plus One
glNewList(top,GL_COMPILE); // Now The "Top" Display List
glBegin(GL_QUADS);
// Top Face
glNormal3f( 0.0f, 1.0f, 0.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
glEnd();
glEndList();
}
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 new AUX_RGBImageRec(Filename); // Load The Bitmap And Return A Pointer
}
return NULL; // If Load Failed Return NULL
}
int LoadGLTextures() // Load Bitmaps And Convert To Textures
{
int Status=0; // Status Indicator
char ruta[100]="Data/Cube.bmp";
AUX_RGBImageRec *TextureImage[1]; // Create Storage Space For The Texture
memset(TextureImage,0,sizeof(void *)*1); // Set The Pointer To NULL
// Load The Bitmap, Check For Errors, If Bitmap's Not Found Quit
if (TextureImage[0]==LoadBMP(ruta))
{
Status=1; // Set The Status To TRUE
glGenTextures(1, &texture[0]); // Create The Texture
// Typical Texture Generation Using Data From The Bitmap
glBindTexture(GL_TEXTURE_2D, texture[0]);
glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[0]->sizeX, TextureImage[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[0]->data);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
}
if (TextureImage[0]) // If Texture Exists
{
if (TextureImage[0]->data) // If Texture Image Exists
{
free(TextureImage[0]->data); // Free The Texture Image Memory
}
free(TextureImage[0]); // Free The Image Structure
}
return Status; // Return The Status
}
GLvoid ReSizeGLScene(GLsizei width, GLsizei height) // Resize And Initialize The GL Window
{
if (height==0) // Prevent A Divide By Zero By
{
height=1; // Making Height Equal One
}
glViewport(0,0,width,height); // Reset The Current Viewport
glMatrixMode(GL_PROJECTION); // Select The Projection Matrix
glLoadIdentity(); // Reset The Projection Matrix
// Calculate The Aspect Ratio Of The Window
gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);
glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
glLoadIdentity(); // Reset The Modelview Matrix
}
int InitGL() // All Setup For OpenGL Goes Here
{
if (!LoadGLTextures()) // Jump To Texture Loading Routine
{
return 0; // If Texture Didn't Load Return FALSE
}
BuildLists(); // Jump To The Code That Creates Our Display Lists
glEnable(GL_TEXTURE_2D); // Enable Texture Mapping
glClearColor(0.0f, 0.0f, 0.0f, 0.5f); // Black Background
glClearDepth(1.0f); // Depth Buffer Setup
glEnable(GL_DEPTH_TEST); // Enables Depth Testing
glEnable(GL_COLOR_MATERIAL); // Enable Material Coloring
return 1; // Initialization Went OK
}
void DrawGLScene() // Here's Where We Do All The Drawing
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //Clear The Screen And The DepthB
glBindTexture(GL_TEXTURE_2D, texture[0]);
for (yloop=1;yloop<6;yloop++)
{
for (xloop=0;xloop<yloop;xloop++)
{
//Poner vuestro codigo no hace falta que se ve axactamente igual
}
}
// Vacia los buffers de dibujo
glutSwapBuffers();
glFlush();
}
int main(int argc, char **argv) {
glutInit(&argc, argv);
glutInitWindowPosition(100,100);
glutInitWindowSize (W_WIDTH, W_HEIGHT);
glutInitDisplayMode (GLUT_RGBA | GLUT_DOUBLE);
glutCreateWindow("Ventana con el Visual C++ y glut");
glutDisplayFunc(DrawGLScene);
glutReshapeFunc(ReSizeGLScene);
// Funciones de inicializacion
InitGL();
glutMainLoop();
return 0;
}
答案 0 :(得分：1)
既然OS X上有GLKit可用，我建议你看看。 Erik Buck的书Learning OpenGL ES for iOS是围绕该框架编写的，以iOS为重点，但他有一个blog post示例项目，显示了OS X 10.8的端口。
如果允许您退出OpenGL，另一个想法是使用SceneKit。这是一个仅10.8的框架，除了Mac以外的任何平台都没有。它公开了大多数与OpenGL相同的控件，但它基本上是一个Objective-C，基于对象的设计，并且与Core Animation很好地集成。文档很少但是很容易让事情运行起来。我发现围绕SceneKit缠绕我的大脑比围绕OpenGL更容易。最佳介绍是WWDC 2012视频。