UC知道openGL---旋转彩色三角形
来源：百度知道 编辑：UC知道 时间：2024/09/27 17:36:02
#include <windows.h>
#include <gl/gl.h>
#include <gl/glu.h>
#include <gl/glut.h>
int screenWidth = 800;
int screenHeight = 600;
float red = 1.0f;
float green = 1.0f;
float blue = 1.0f;
GLfloat rtri = 100.0f; // 用于三角形的角度
GLfloat rquad = -100.0f; // 用于四边形的角度
void myInit(void)
{
glShadeModel(GL_SMOOTH);
glClearColor(0.0,0.0,0.0,0.0);
glColor3f(red,green,blue);
glViewport(0,0,screenWidth,screenHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0,(GLdouble)screenWidth/(GLdouble)screenHeight,0.1,100.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
}
void myDisplay(void)
{
glClear(GL_COLOR_BUFFER
#include <gl/gl.h>
#include <gl/glu.h>
#include <gl/glut.h>
int screenWidth = 800;
int screenHeight = 600;
float red = 1.0f;
float green = 1.0f;
float blue = 1.0f;
GLfloat rtri = 100.0f; // 用于三角形的角度
GLfloat rquad = -100.0f; // 用于四边形的角度
void myInit(void)
{
glShadeModel(GL_SMOOTH);
glClearColor(0.0,0.0,0.0,0.0);
glColor3f(red,green,blue);
glViewport(0,0,screenWidth,screenHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0,(GLdouble)screenWidth/(GLdouble)screenHeight,0.1,100.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
}
void myDisplay(void)
{
glClear(GL_COLOR_BUFFER
可以添加一个键盘操作，比如点一下a键调用一次glutPostRedisplay（重绘函数）。或者在glutSwapBuffers上做做手脚，这个算是绘制函数了，你可以在myDisplay里做个循环，把你绘制三角形和正方形的函数都放里面，还有glutSwapBuffers，每循环一次就rtri++; rquad++。但后者执行不太好，而且循环里建议加一个Sleep
当然不会动了……
glutDisplayFunc(myDisplay);
里的myDisplay只会调用一次啊～当然，如果窗口重绘的话它也会被再次调用～～～