glTranslatef_茶壶

最新推荐文章于 2022-06-07 16:41:51 发布

原创最新推荐文章于 2022-06-07 16:41:51 发布 · 913 阅读

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本文介绍了一个使用OpenGL和GLUT库来绘制三个不同颜色茶壶的例子程序。程序通过设置视口大小、投影矩阵以及模型视图矩阵来实现茶壶的正确显示，并通过变换和颜色设置展示不同位置和颜色的茶壶。

#include <gl/glut.h>

void Initial(void)
{
    glClearColor(0.0,0.0,0.0,0.0);
}

void myReshape(GLsizei w,GLsizei h)
{
    glViewport(0,0,w,h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(80.0,(GLdouble)w/(GLdouble)h,1.0,20.0);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    glTranslatef(0.0,0.0,-8.0);
}

void myDisplay(void)
{
    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix();
    glColor3f(0.0,0.0,1.0);
    glutSolidTeapot(1.5);
    glPopMatrix();

    glPushMatrix();
    glTranslatef(5.0,0.0,0.0);
    glColor3f(1.0,0.0,0.0);
    glutSolidTeapot(1.0);
    glPopMatrix();

    glPushMatrix();
    glTranslatef(-5.0,0.0,0.0);
    glColor3f(0.0,1.0,0.0);
    glutSolidTeapot(1.0);
    glPopMatrix();

    glFlush();
}

int main(int argc,char** argv)
{
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);
    glutInitWindowSize(400,400);
    glutInitWindowPosition(200,200);
    glutCreateWindow("Double Triangles");

    Initial();
    glutReshapeFunc(myReshape);
    glutDisplayFunc(myDisplay);
    glutMainLoop();
    return 0;
}