:/ week05

 到 https://jsyeh.org/3dcg10/ 下載data,window 打開reansformation

glTranslatef(0.00,0.00,0.00)///前後上下左右

glRotatef(0.0,0.00,1.00,1.00)///轉動

glScalef(1.50,1.00,1.00)///加寬加大加長

glBegin(...);///藍色車子

...

朝著中心點轉

glRotatef(0.0,0.00,1.00,1.00)

glTranslatef(0.00,0.00,0.00)

車子本體旋轉

glTranslatef(0.00,0.00,0.00)

glRotatef(0.0,0.00,1.00,1.00)

用水壺試

#include <GL/glut.h>

float angle = 0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glColor3f(0,1,0);///綠色

    glTranslatef(0.8,0,0);

    glRotatef(angle,0,0,1);

    glutSolidTeapot(0.3);

    glPopMatrix();

    glColor3f(1,0,0);///紅色

    glPushMatrix();

    glRotatef(angle,0,0,1);

    glTranslatef(0.8,0,0);

    glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

    angle++;

}

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

{

        glutInit(&argc, argv);

glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("GLUT Shapes");

glutDisplayFunc(display);

glutIdleFunc(display);

glutMainLoop();

}

指定中心旋轉物體

#include <GL/glut.h>

float angle = 0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(0,1,0);///綠色

    glPushMatrix();

    glutSolidCube(0.5);

    glPushMatrix();

        glTranslated(0.25,0.25,0);///把整個東西掛在右上角

        glRotated(angle,0,0,1);///轉動

        glTranslatef(0.25,0.25,0);///把旋轉中心放到中心

        glColor3f(1,0,0);///紅色

        glutSolidCube(0.5);

    glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

    angle++;

}

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

{

        glutInit(&argc, argv);

glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("GLUT Shapes");

glutDisplayFunc(display);

glutIdleFunc(display);

glutMainLoop();

}