第一次OpenGL

最新推荐文章于 2021-03-20 14:20:44 发布

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最新推荐文章于 2021-03-20 14:20:44 发布

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分类专栏：计算机图形学

本文链接：https://blog.youkuaiyun.com/qq_38068435/article/details/79538496

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#include<GL/glut.h>
#include<stdlib.h>

void init(void)
{
	glEnable(GL_DEPTH_TEST);

	GLfloat position[]={1.0,1.0,1.0,0.0};
	glLightfv(GL_LIGHT0,GL_POSITION,position);
	glEnable(GL_LIGHTING);
	glEnable(GL_LIGHT0);

	GLfloat ambient[]={0.0,0.0,0.0,1.0};
	GLfloat diffuse[]={0.95,0.05,0.95,1.0};
	GLfloat specular[]={1.0,1.0,1.0,1.0};
	glMaterialfv(GL_FRONT,GL_AMBIENT,ambient);
	glMaterialfv(GL_FRONT,GL_DIFFUSE,diffuse);
	glMaterialfv(GL_FRONT,GL_SPECULAR,specular);
	glMaterialf(GL_FRONT,GL_SHININESS,50.0);
}

void Display(void)
{
	glClearColor(0.75f,0.75f,0.75f,1.0f);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	glNewList(1,GL_COMPILE);
	//glutSolidTeapot(0.5);//茶壶
	//glutSolidSphere(0.75,25,25);//球体
	glutWireSphere(0.75,25,25);//线框球体
	glEndList();
	glCallList(1);
	glFlush();
}

void reshape(GLsizei w,GLsizei h)
{
	glViewport(0,0,w,h);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glOrtho(-1.0,1.0,-1.0,1.0,-1.0,1.0);
	glMatrixMode(GL_MODELVIEW);
}

int main(int argc,char** argv)
{
	glutInit(&argc,argv);
	glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB |GLUT_DEPTH);
	glutInitWindowPosition(0,0);
	glutInitWindowSize(500,500);
	glutCreateWindow("myDEMO");

	glutReshapeFunc(reshape);
	glutDisplayFunc(Display);//调用绘图函数
	init();//初始化函数
	glutMainLoop();//进入循环
	return 0;
}