2.複習:移動,旋轉,縮放
3.主題:T-R-T 旋轉(改變旋轉軸)
#include <GL/glut.h>
float angle=0;
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(0,0.5,0);///往上移動的茶壺
glutSolidTeapot(0.3);
glPopMatrix();
glPushMatrix();
glTranslatef(0.5,0.625,0);///(3)把它掛在你要的地方
glRotatef(angle,0,0,1);///(1)先有個轉動,但怪怪的
glTranslatef(0.6,0,0);///(2)要更早去移動旋轉中心
glRotatef(-90,0,1,0);///轉動90度的cone
glutSolidCone(0.2,0.6,30,30);///直直的cone
glPopMatrix();
glutSwapBuffers();
}
void motion(int x,int y)
{
angle = x;
display();///滑鼠motion馬上更新
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week10");
glutDisplayFunc(display);
glutMotionFunc(motion);///滑鼠motion
glutMainLoop();
}
4.主題:glut
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