代码// ConsoleApplication1.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include"stdlib.h"
#include"glut.h"
#pragma comment ( lib , "glut32.lib" )
GLfloat angle = 0.0f;
GLfloat multiply = 0.0f;
void display(void)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(90.0f, 1.0f, 1.0f, 20.0f);
glLoadIdentity();
gluLookAt(0.5, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
{
//设置一个点光源
GLfloat light_position[] = { 0.5f,0.0f,0.0f,1.0f };//（xyzw）w为1时代表点光源，0时代表方向光源
GLfloat light_ambient[] = { 0.5f,0.5f,0.5f,1.0f };//（0001）
GLfloat light_diffuse[] = { 1.0f,1.0f,1.0f,1.0f };//（1111）
GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };//（1111）
glLightfv(GL_LIGHT0, GL_POSITION, light_position);
glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);//光源环境光强值
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);//光源漫反射强值
glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);//光源镜面反射强值
glEnable(GL_LIGHT0);//打开该光源
glEnable(GL_LIGHTING);//打开光照
}
{
glRotatef(angle, 0.0f, 1.0f, 0.0f);
glTranslatef(0.0f, 0.0f, 0.6f); //平移
glScaled(multiply, multiply, multiply); //缩放
glutSolidSphere(0.2, 50, 50);
}
glutSwapBuffers();
}
void rotateAndzoom(void) //旋转和缩放
{
angle += 1.0f;
if (angle >= 360.0f)
angle = 0.0f;
display();
//设置旋转
multiply += 0.01f;
if (multiply >= 2.0f)
// multiply -= 0.01f;
//if (multiply <= 1.0f)
multiply = 1.0f;
display();
//设置缩放
}
int main(int argc, char* argv[])
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
glutInitWindowPosition(400, 50);
glutInitWindowSize(800, 800);
glutCreateWindow("立体");
glutDisplayFunc(&display);
glutIdleFunc(&rotateAndzoom);//旋转
glutMainLoop();//调用该函数启动程序，所有以创建的窗口将会显示
return 0;
}
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