主題:旋轉&移動
1.教材:jsyeh.org/3dcg10
(A)
移動 glTranslatef
旋轉 glRotatef
縮放 glScalef
glBegin();glEnd()
(以車子先旋轉再移動)

(B)
旋轉 glRotatef
移動 glTranslatef
縮放 glScalef
glBegin();glEnd()
(以畫面中心先移動在旋轉)

課堂作業二:
mouse轉動
1.
#include <GL/glut.h>
float rotX=0;
void display()
{
glClearColor(0,0,1,1);
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glRotatef(rotX,0,1,0);
glColor3f(1,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void motion(int x, int y)
{
rotX = x;
display();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("hello3D");
glutDisplayFunc(display);
glutMotionFunc(motion);
///glutMouseFunc(mouse);
glutMainLoop();
}

2.
(向左轉)

課堂作業三:
1.什麼是Buffer?
2.什麼是Double Buffer?
課堂作業四:
階層式旋轉
1.
#include <GL/glut.h>
float rotX=0,rotY=0;
void display()
{
glClearColor(0,0,1,1);
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glRotatef(rotY,1,0,0);
glRotatef(rotX,0,1,0);
glColor3f(1,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void motion(int x, int y)
{
rotX = x; rotY = y;
display();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutInitWindowPosition(700,0);
glutCreateWindow("hello3D");
glutDisplayFunc(display);
glutMotionFunc(motion);
///glutMouseFunc(mouse);
glutMainLoop();
}

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