累

http://www.cmlab.csie.ntu.edu.tw/~jsyeh/3dcg10/
下載data.zip, windows.zip, glut32.dll 這3個檔案

解壓縮data.zip, windows.zip後把程式都放在同一個資料夾

點開Transformation的程式來理解,旋轉

在codeblocks中寫出旋轉的程式

#include <GL/glut.h>
float myAngle=0,oldX=0;
void motion(int x,int y)
{
    myAngle += (x-oldX);
    oldX = x;
    glutPostRedisplay();
}
void mouse(int button,int state,int x, int y)
{
    oldX=x;
}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glRotatef(myAngle,0,0,1);
        glutSolidTeapot(0.3);
    glPopMatrix();
    glutSwapBuffers();
}
int main(int argc, char**argv)
{
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week04");

    glutDisplayFunc(display);
    glutMotionFunc(motion);
    glutMouseFunc(mouse);
    glutMainLoop();
}