欸幹你看，是圖學欸week02

把177行縮短到不到10行

讓茶壺變色了#include <GL/glut.h>static void display(void){    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);    glColor3f(0,1,0);    glutSolidTeapot(0.3);    glutSwapBuffers();}int main(int argc, char *argv[]){    glutInit(&argc, argv);    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);    glutCreateWindow("§Ú¬O08160793 good!");    glutDisplayFunc(display);    glutMainLoop();}

加了三角形的茶壺#include <GL/glut.h>
static void display(void){    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);    glBegin(GL_TRIANGLES);
        glColor3f(1.0f, 0.0f, 0.0f);   glVertex2f(0.0f,   1.0f);        glColor3f(0.0f, 1.0f, 0.0f);   glVertex2f(0.87f,  -0.5f);        glColor3f(0.0f, 0.0f, 1.0f);   glVertex2f(-0.87f, -0.5f);
    glEnd();    glColor3f(0,1,0);    glutSolidTeapot(0.3);    glutSwapBuffers();}int main(int argc, char *argv[]){    glutInit(&argc, argv);    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);    glutCreateWindow("§Ú¬O08160793 good!");    glutDisplayFunc(display);    glutMainLoop();}

讓三角形便成線

讓三角形便成圓形!!#include <GL/glut.h>#include <math.h>>
static void display(void){    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);    glBegin(GL_POLYGON);    glColor3f(1.0f, 0.0f, 0.0f);    for (float angle=0;angle<3.14159265358979*2;angle+=0.01)    {        glVertex2f(cos(angle),sin(angle));    }    glEnd();    glColor3f(0,1,0);    glutSolidTeapot(0.3);    glutSwapBuffers();}int main(int argc, char *argv[]){    glutInit(&argc, argv);    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);    glutCreateWindow("我是O08160793 good!");    glutDisplayFunc(display);    glutMainLoop();}