首頁猿問具體代碼如下：為什么我用glutW...

具體代碼如下：為什么我用glutWireCube函數(shù)卻畫除了平面圖形，而不是立方體呢

算法與數(shù)據(jù)結(jié)構(gòu)

神不在的星期二 2023-02-16 22:18:12

#include <GL/glut.h>#include <stdlib.h>void display();void init();void display() { glClear(GL_COLOR_BUFFER_BIT); glMatrixMode(GL_MODELVIEW); glColor3f(1.0,0.0,0.0);glPushMatrix();glutWireCube(1.0);glPopMatrix();glutSwapBuffers();glFlush();} //init the windowvoid init() { glClearColor(1.0,1.0,1.0,1.0); glColor3f(0.0,0.0,0.0);glMatrixMode(GL_PROJECTION);glLoadIdentity();glOrtho(1.0,1.0,0.0,1.0,-1.0,1.0);}//the program starts hereint main(int argc,char** argv) { glutInit(&argc,argv); glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB); glutInitWindowSize(500,500); glutInitWindowPosition(0,0); glutCreateWindow("cube");init();glutDisplayFunc(display); glutMainLoop(); }

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2 回答

蠱毒傳說

TA貢獻1895條經(jīng)驗獲得超3個贊

是立體圖形，只是你采用了平行投影來觀察，且視點設(shè)在與立方體的側(cè)面垂直的位置上，故只能看到一個面。

建議改變視點，或者對立方體先做旋轉(zhuǎn)45度，

反對回復(fù) 2023-02-20

繁星點點滴滴

TA貢獻1803條經(jīng)驗獲得超3個贊

幫你修改的代碼
#include <windows.h>
#include <gl/glut.h>
void init(void)
{
glClearColor(0.0,0.0,0.0,0.0);
glShadeModel(GL_FLAT);
}
void display(void)
{
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glPushMatrix();
glutWireCube(1.0);
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
void reshape(int w, int h)
{
glViewport(0,0,(GLsizei)w,(GLsizei)h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(65.0,(GLfloat)w/(GLfloat)h,1.0,20.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0,0.0,-5.0);
}

int main(int argc, char ** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize(500,500);
glutInitWindowPosition(100,100);
glutCreateWindow("cube");
init();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMainLoop();
return 0;
}