鯉魚-Week13

1、用 glRectf(); 畫圖

#include <GL/glut.h>
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glRectf(0.5,0.5,-0.5,-0.5);
    glutSwapBuffers();
}
int main(int argc,char**argv)
{
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(600,600);
    glutCreateWindow("week13 rect TRT");
    glutDisplayFunc(display);
    glutMainLoop();
}

2、

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glRectf(0.5,0.5,-0.5,-0.5); //白色身體

    glPushMatrix();

        //glTranslatef(x,y,z);//等一下掛在身體上

        //glRotatef(angle,0,0,1);//z軸

        //glTranslatef(x2,y2,z2);

            //用不到的先註解掉

        glColor3f(1,0,0);//紅色的

        glRectf(0.5,0.5,1.0,0.3);//手臂

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(600,600); //顯示大小

    glutCreateWindow("week13 rect TRT");

    glutDisplayFunc(display);

    glutMainLoop();

}

3、

    把旋轉中心放正中心
    glTranslatef(-0.5,-0.4,0);

4、

    旋轉

    float angle = 45;

    glRotatef(angle,0,0,1);

5、可以用滑鼠控制紅色小方塊旋轉（揮手）

#include <GL/glut.h>

float angle = 45,oldX=0;

void mouse(int button, int state, int x, int y){ //mouse按下去

    oldX = x;

}

void motion(int x, int y){

    angle += (x-oldX);

    oldX = x;

    glutPostRedisplay(); //重畫畫面 Re display

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glRectf(0.5,0.5,-0.5,-0.5); //白色身體

    glPushMatrix();

        glTranslatef(0.5,0.5,0);//等一下掛在0.5,0.5

        glRotatef(angle,0,0,1);//z軸旋轉

        glTranslatef(-0.5,-0.4,0);

        glColor3f(1,0,0);//紅色的

        glRectf(0.5,0.5,1.0,0.3);//手臂

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(600,600);

    glutCreateWindow("week13 rect TRT");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

6、白色方塊瘦身，手臂位置調整

7、下手肘

8、下手肘旋轉

#include <GL/glut.h>

float angle = 45,oldX=0;

void mouse(int button, int state, int x, int y){ //mouse按下去

    oldX = x;

}

void motion(int x, int y){

    angle += (x-oldX);

    oldX = x;

    glutPostRedisplay(); //重畫畫面 Re display

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glRectf(0.3,0.5,-0.3,-0.2); //白色身體

    glPushMatrix();

        glTranslatef(0.3,0.5,0);//等一下掛在0.5,0.5

        //glRotatef(angle,0,0,1);//z軸旋轉

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0);//紅色的

        glRectf(0.5,0.5,1.0,0.3);//手臂

    glPopMatrix();

        glTranslatef(0.8,0.4,0);

        glRotatef(angle,0,0,1);

        glTranslatef(-0.8,-0.4,0);

        glColor3f(0,1,0);//綠色的

        glRectf(0.8,0.5,1.1,0.3);//下手臂

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(600,600);

    glutCreateWindow("week13 rect TRT");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

9、兩邊的手

#include <GL/glut.h>

float angle = 45,oldX=0;

void mouse(int button, int state, int x, int y){ //mouse按下去

    oldX = x;

}

void motion(int x, int y){

    angle += (x-oldX);

    oldX = x;

    glutPostRedisplay(); //重畫畫面 Re display

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glRectf(0.3,0.5,-0.3,-0.2); //白色身體

    glPushMatrix();//右半邊

        glTranslatef(0.3,0.5,0);//等一下掛在0.5,0.5

        glRotatef(angle,0,0,1);//z軸旋轉

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0);//紅色的

        glRectf(0.3,0.5,0.8,0.3);//手臂

        glTranslatef(0.8,0.4,0);

        glRotatef(angle,0,0,1);

        glTranslatef(-0.8,-0.4,0);

        glColor3f(0,1,0);//綠色的

        glRectf(0.8,0.5,1.1,0.3);//下手臂

    glPopMatrix();

        glPushMatrix();//左半邊

        glTranslatef(-0.3,0.5,0);//等一下掛在0.5,0.5

        glRotatef(angle,0,0,1);//z軸旋轉

        glTranslatef(0.3,-0.4,0);

        glColor3f(1,0,0);//紅色的

        glRectf(-0.3,0.5,-0.8,0.3);//手臂

        glTranslatef(-0.8,0.4,0);

        glRotatef(angle,0,0,1);

        glTranslatef(0.8,-0.4,0);

        glColor3f(0,1,0);//綠色的

        glRectf(-0.8,0.5,-1.1,0.3);//下手臂

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(600,600);

    glutCreateWindow("week13 rect TRT");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

10、用鍵盤選擇控制那個手的移動

#include <GL/glut.h>

float angle[20],oldX=0;

int angleID=0;

void keyboard(unsigned char key, int x, int y){

    if(key=='1')angleID=1;

    if(key=='2')angleID=2;

    if(key=='3')angleID=3;

    if(key=='4')angleID=4;

}

void mouse(int button, int state, int x, int y){ //mouse按下去

    oldX = x;

}

void motion(int x, int y){

    angle[angleID] += (x-oldX);

    oldX = x;

    glutPostRedisplay(); //重畫畫面 Re display

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glRectf(0.3,0.5,-0.3,-0.2); //白色身體

    glPushMatrix();//右半邊

        glTranslatef(0.3,0.5,0);//等一下掛在0.5,0.5

        glRotatef(angle[0],0,0,1);//z軸旋轉

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0);//紅色的

        glRectf(0.3,0.5,0.8,0.3);//手臂

        glTranslatef(0.8,0.4,0);

        glRotatef(angle[1],0,0,1);

        glTranslatef(-0.8,-0.4,0);

        glColor3f(0,1,0);//綠色的

        glRectf(0.8,0.5,1.1,0.3);//下手臂

    glPopMatrix();

        glPushMatrix();//左半邊

        glTranslatef(-0.3,0.5,0);//等一下掛在0.5,0.5

        glRotatef(angle[2],0,0,1);//z軸旋轉

        glTranslatef(0.3,-0.4,0);

        glColor3f(1,0,0);//紅色的

        glRectf(-0.3,0.5,-0.8,0.3);//手臂

        glTranslatef(-0.8,0.4,0);

        glRotatef(angle[3],0,0,1);

        glTranslatef(0.8,-0.4,0);

        glColor3f(0,1,0);//綠色的

        glRectf(-0.8,0.5,-1.1,0.3);//下手臂

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(600,600);

    glutCreateWindow("week13 rect TRT");

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}