openGL 初试绘制三角形和添加鼠标键盘事件-白红宇

openGL 初试绘制三角形和添加鼠标键盘事件

阅读量：6183 次

发布时间：2019-06-21

本文共 948 字，大约阅读时间需要 3 分钟。

code：

#include 
    
     #include 
     
      void render(void);void keyboard(unsigned char c,int x,int y);void mouse(int button,int state,int x,int y);int main(int argc , char** argv){	glutInit(&argc,argv);	glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA);	glutInitWindowPosition(100,100);	glutInitWindowSize(640,480);	glutCreateWindow("simple glut application");	glutDisplayFunc(render);	glutKeyboardFunc(keyboard);	glutMouseFunc(mouse);	glutMainLoop();}//鼠标事件void mouse(int button,int state,int x,int y){	if(button == GLUT_RIGHT_BUTTON ){		exit(0);	}}//键盘事件void keyboard(unsigned char c,int x,int y){	if(c==27){		exit(0);	}}void render(void){	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);	glBegin(GL_TRIANGLES);	//分别设置三点的颜色是整体产生变化色	//设置颜色	glColor3f(1,0,0);	//绘制点	glVertex2f(-0.5,-0.5);	//设置颜色	glColor3f(0,1,0);	//绘制点	glVertex2f(0.5,-0.5);	//设置颜色	glColor3f(0,0,1);	//绘制点	glVertex2f(0.0,0.5);	glEnd();	glutSwapBuffers();}

效果：