Week 03 宋小胖的上課筆記

1.茶壺變顏色

使用glColor3f(r,g,b);

就可以換顏色了

2.頂點Vertex

要先輸入glBegin(GL_POLYGON);

最後再寫glEnd();

glVertex3f的3代表可以輸入幾個參數

{glColor3f(r,g,b);

glVertex3f(x,y,z);}

x3個

程式碼:

#include <GL/glut.h>

static void display(void)

{

    glBegin(GL_POLYGON);

    glColor3f(1,0,0);

    glVertex3f(0,0,0);

    glColor3f(0,1,0);

    glVertex3f(1,1,0);

    glColor3f(0,0,1);

    glVertex3f(-1,1,0);

    glEnd();

    glutSwapBuffers();

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutMainLoop();

    return EXIT_SUCCESS;

}