急求opengl程序代码

#include<windows.h>

#include<stdlib.h>

#include<stdio.h>

#include<GL/glut.h>

#include<math.h>

void drawline(float x1,float y1,float x2,float y2) //The function to draw a line from point(x1,y1) to point (x2,y2)

{

glClear (GL_COLOR_BUFFER_BIT)

glColor3f (0.0, 0.0, 0.0)

glBegin(GL_LINES)

glVertex2f(x1,y1)

glVertex2f(x2,y2)

}

void _display(void)

{

#define pi 3.1415926

GLfloat theta,r=18

GLint n=16

theta=2*pi/n

GLfloat vertex_list[16][2]

for(int i=0i<ni++) //Find the vertex

{

vertex_list[i][0]=25+r*cos(i*theta)

vertex_list[i][1]=25+r*sin(i*theta)

}

glClear (GL_COLOR_BUFFER_BIT)

glColor3f (0.0, 0.0, 0.0)

glBegin(GL_LINE_LOOP)

for(int j=0j<nj++)

{

for(int k=jk<nk++)

{

drawline(vertex_list[j][0],vertex_list[j][1],vertex_list[k][0],vertex_list[k][1])

}

}

glEnd()

glFlush ()

}

void _init (void)

{

glClearColor (1.0, 1.0, 1.0, 0.0)

glColor3f(1.0, 0.0, 0.0)

glMatrixMode(GL_PROJECTION)

glLoadIdentity()

gluOrtho2D(0.0, 50.0, 0.0, 50.0)

glMatrixMode(GL_MODELVIEW)

}

int main(int argc, char** argv)

{

glutInit(&argc, argv)

glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB)

glutInitWindowSize (500, 500)

glutInitWindowPosition (100, 0)

glutCreateWindow ("hello")

_init ()

glutDisplayFunc(_display)

glutMainLoop()

return 0

}

一个正十六边形 各点相连的图形

我自己写的 你看看行不行

// Bounce.c

// Demonstrates a simple animated rectangle program with GLUT

// OpenGL SuperBible, 2nd Edition

// Richard S. Wright Jr.

#include"stdafx.h"

#include <windows.h>

#include <gl/glut.h>

// Initial square position and size

GLfloat x1 = 100.0f

GLfloat y1 = 150.0f

GLsizei rsize = 50

// Step size in x and y directions

// (number of pixels to move each time)

GLfloat xstep = 1.0f

GLfloat ystep = 1.0f

// Keep track of windows changing width and height

GLfloat windowWidth

GLfloat windowHeight

// Called to draw scene

void RenderScene(void)

{

// Clear the window with current clearing color

glClear(GL_COLOR_BUFFER_BIT)

// Set current drawing color to red

// R GB

glColor3f(1.0f, 0.0f, 0.0f)

// Draw a filled rectangle with current color

glRectf(x1, y1, x1+rsize, y1+rsize)

// Flush drawing commands

glutSwapBuffers()

}

// Called by GLUT library when idle (window not being

// resized or moved)

void TimerFunction(int value)

{

// Reverse direction when you reach left or right edge

if(x1 >windowWidth-rsize || x1 <0)

xstep = -xstep

// Reverse direction when you reach top or bottom edge

if(y1 >windowHeight-rsize || y1 <0)

ystep = -ystep

// Check bounds. This is incase the window is made

// smaller and the rectangle is outside the new

// clipping volume

if(x1 >windowWidth-rsize)

x1 = windowWidth-rsize-1

if(y1 >windowHeight-rsize)

y1 = windowHeight-rsize-1

// Actually move the square

x1 += xstep

y1 += ystep

// Redraw the scene with new coordinates

glutPostRedisplay()

glutTimerFunc(33,TimerFunction, 1)

}

// Setup the rendering state

void SetupRC(void)

{

// Set clear color to blue

glClearColor(0.0f, 0.0f, 1.0f, 1.0f)

}

// Called by GLUT library when the window has chanaged size

void ChangeSize(GLsizei w, GLsizei h)

{

// Prevent a divide by zero

if(h == 0)

h = 1

// Set Viewport to window dimensions

glViewport(0, 0, w, h)

// Reset coordinate system

glMatrixMode(GL_PROJECTION)

glLoadIdentity()

// Keep the square square, this time, save calculated

// width and height for later use

if (w <= h)

{

windowHeight = 250.0f*h/w

windowWidth = 250.0f

}

else

{

windowWidth = 250.0f*w/h

windowHeight = 250.0f

}

// Set the clipping volume

glOrtho(0.0f, windowWidth, 0.0f, windowHeight, 1.0f, -1.0f)

glMatrixMode(GL_MODELVIEW)

glLoadIdentity()

}

// Main program entry point

void main(void)

{

glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB)

glutCreateWindow("Bounce")

glutDisplayFunc(RenderScene)

glutReshapeFunc(ChangeSize)

glutTimerFunc(33, TimerFunction, 1)

SetupRC()

glutMainLoop()

}

//是正方形的，你改一下吧~

程序还是自己试着编，这样才会进步，加油哈！

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