尝试使用xCode在OSX Yosemite上运行示例OpenGL C ++程序。
在运行程序时,我得到了GL / glut.h'找不到文件截图:
但是,我在项目中有glut.h标题:
在另一个论坛上,我读到它应该是' GLUT / glut.h'所以我做了,但得到了以下信息:
如何配置带有C ++的OpenGL,我需要做什么?
这是我试图运行的代码。如果我可以运行这个,那么我应该准备好一切:
#include <GLUT/glut.h>
#include <math.h>
//#include <stdlib.h>
const double TWO_PI = 6.2831853;
/* Initial display-window size. */
GLsizei winWidth = 400, winHeight = 400;
GLuint regHex;
class screenPt
{
private:
GLint x, y;
public:
/* Default Constructor: initializes coordinate position to (0, 0). */
screenPt ( ) {
x = y = 0;
}
void setCoords (GLint xCoord, GLint yCoord) {
x = xCoord;
y = yCoord;
}
GLint getx ( ) const {
return x;
}
GLint gety ( ) const {
return y;
}
};
static void init (void)
{
screenPt hexVertex, circCtr;
GLdouble theta;
GLint k;
/* Set circle center coordinates. */
circCtr.setCoords (winWidth / 2, winHeight / 2);
glClearColor (1.0, 1.0, 1.0, 0.0); // Display-window color = white.
/* Set up a display list for a red regular hexagon.
* Vertices for the hexagon are six equally spaced
* points around the circumference of a circle.
*/
regHex = glGenLists (1); // Get an identifier for the display list.
glNewList (regHex, GL_COMPILE);
glColor3f (1.0, 0.0, 0.0); // Set fill color for hexagon to red.
glBegin (GL_POLYGON);
for (k = 0; k < 6; k++) {
theta = TWO_PI * k / 6.0;
hexVertex.setCoords (circCtr.getx ( ) + 150 * cos (theta),
circCtr.gety ( ) + 150 * sin (theta));
glVertex2i (hexVertex.getx ( ), hexVertex.gety ( ));
}
glEnd ( );
glEndList ( );
}
void regHexagon (void)
{
glClear (GL_COLOR_BUFFER_BIT);
glCallList (regHex);
glFlush ( );
}
void winReshapeFcn (int newWidth, int newHeight)
{
glMatrixMode (GL_PROJECTION);
glLoadIdentity ( );
gluOrtho2D (0.0, (GLdouble) newWidth, 0.0, (GLdouble) newHeight);
glClear (GL_COLOR_BUFFER_BIT);
}
void main (int argc, char** argv)
{
glutInit (&argc, argv);
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
glutInitWindowPosition (100, 100);
glutInitWindowSize (winWidth, winHeight);
glutCreateWindow ("Reshape-Function & Display-List Example");
init ( );
glutDisplayFunc (regHexagon);
glutReshapeFunc (winReshapeFcn);
glutMainLoop ( );
}
答案 0 :(得分:1)
当您将其更改为'GLUT / glut.h`时,它会正确找到标题。不幸的是,现在您收到有关已弃用函数的所有警告消息。
有关已弃用的功能消息的修正,请参阅xcode 5 deprecation warning about glut functions或Glut deprecation in Mac OSX 10.9, IDE: QT Creator
您还有一条错误消息,指出您的main函数需要返回一个int。这将阻止您的代码编译,而不是警告。
修改强> 您应该将main函数更改为返回类型为int。
int main(int argc, char *argv[])
{
/* code */
return 0;
}
有些编译器会接受void作为main的返回类型,但这是一个非标准扩展。
答案 1 :(得分:1)
尝试#include <GLUT/glut.h>
因为框架的链接名称是GLUT。