YJ week13

Keyboard和Mouse 控制

 1.複習上週,利用四角形練習TRT

#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); ///四角形

    glPushMatrix();

        glTranslatef();

        glRotatef(,0,0,1);

        glTranslatef();

        glColor3f(1,0,0);

        glRectf(0.5,0.5,1.0,0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit( &argc , argv );

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("Homework13_TRT");

    glutIdleFunc(display);

    glutDisplayFunc(display);

    glutMainLoop();

}

-> 將紅色方塊旋轉45度

#include <GL/glut.h>

float angle=45;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glRectf(0.5,0.5,-0.5,-0.5);

    glPushMatrix();

        ///glTranslatef();

        glRotatef(angle,0,0,1);

        glTranslatef(-0.5,-0.4,0);  ///把旋轉中心放到正中心

        glColor3f(1,0,0);

        glRectf(0.5,0.5,1.0,0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit( &argc , argv );

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("Homework13_TRT");

    glutIdleFunc(display);

    glutDisplayFunc(display);

    glutMainLoop();

}

->紅色方塊可以用滑鼠旋轉

#include <GL/glut.h>

float angle=45,oldX=0;

void mouse(int button,int state,int x,int y)

{

    oldX = x ;

}

void motion(int x,int y)

{

    angle  += (x-oldX);

    oldX = x;

    glutPostRedisplay();///重畫畫面

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1); ///白色的

    glRectf(0.5,0.5,-0.5,-0.5);

    glPushMatrix();

        glTranslatef(0.5,0.5,0); ///等一下方塊要掛在0.5,0.5的位置

        glRotatef(angle,0,0,1); ///旋轉

        glTranslatef(-0.5,-0.4,0);

        glColor3f(1,0,0); ///紅色的

        glRectf(0.5,0.5,1.0,0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit( &argc , argv );

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("Homework13_TRT");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

2.兩個TRT

-> 類似上面的程式,稍微修改一下

-> 先修改一下白色方塊的大小,再修改紅色方塊的位置

#include <GL/glut.h>

float angle=45,oldX=0;

void mouse(int button,int state,int x,int y)

{

    oldX = x ;

}

void motion(int x,int y)

{

    angle  += (x-oldX);

    oldX = x;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glRectf(0.3,0.5,-0.3,-0.2); ///改白色方塊的大小

    glPushMatrix();

        glTranslatef(0.3,0.5,0); ///改變紅色方塊掛的地方

        glRotatef(angle,0,0,1);

        glTranslatef(-0.5,-0.4,0);

        glColor3f(1,0,0);

        glRectf(0.5,0.5,1.0,0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit( &argc , argv );

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("Homework13_TRT");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

-> 增加綠色方塊並再次調整紅色方塊的位置

#include <GL/glut.h>

float angle=0,oldX=0; ///角度改回0

void mouse(int button,int state,int x,int y)

{

    oldX = x ;

}

void motion(int x,int y)

{

    angle  += (x-oldX);

    oldX = x;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1); ///白色的

    glRectf(0.3,0.5,-0.3,-0.2);

    glPushMatrix();

        glTranslatef(0.3,0.5,0);

        glRotatef(angle,0,0,1); ///旋轉

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0); ///紅色的

        glRectf(0.3,0.5,0.8,0.3);

        glPushMatrix();

            glColor3f(0,1,0); ///綠色的

            glRectf(0.8,0.5,1.1,0.3);

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit( &argc , argv );

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("Homework13_TRT");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

->綠色方塊位置移動,並讓它可以用滑鼠旋轉

#include <GL/glut.h>

float angle=0,oldX=0;

void mouse(int button,int state,int x,int y)

{

    oldX = x ;

}

void motion(int x,int y)

{

    angle  += (x-oldX);

    oldX = x;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1); ///白色的

    glRectf(0.3,0.5,-0.3,-0.2);

    glPushMatrix();

        glTranslatef(0.3,0.5,0);

        ///glRotatef(angle,0,0,1);

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0);///紅色的

        glRectf(0.3,0.5,0.8,0.3);

        glPushMatrix();

            glTranslatef(0.8,0.4,0); ///下手肘掛在關節上

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

            glTranslatef(-0.8,-0.4,0); ///把下手肘的旋轉中心,放正中間

            glColor3f(0,1,0);

            glRectf(0.8,0.5,1.1,0.3);

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit( &argc , argv );

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("Homework13_TRT");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

3.多個TRT

#include <GL/glut.h>

float angle=0,oldX=0;

void mouse(int button,int state,int x,int y)

{

    oldX = x ;

}

void motion(int x,int y)

{

    angle  += (x-oldX);

    oldX = x;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1); ///白色的

    glRectf(0.3,0.5,-0.3,-0.2);

    glPushMatrix();

        glTranslatef(0.3,0.5,0);

        glRotatef(angle,0,0,1); ///旋轉

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0); ///紅色的

        glRectf(0.3,0.5,0.8,0.3);

        glPushMatrix();

            glTranslatef(0.8,0.4,0);

            glRotatef(angle,0,0,1);

            glTranslatef(-0.8,-0.4,0);

            glColor3f(0,1,0);

            glRectf(0.8,0.5,1.1,0.3);

        glPopMatrix();

    glPopMatrix();

    glPushMatrix(); ///左半邊

        glTranslatef(-0.3,0.5,0);

        glRotatef(angle,0,0,1);

        glTranslatef(+0.3,-0.4,0);

        glColor3f(1,0,0);///紅色的

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

        glPushMatrix();

            glTranslatef(-0.8,0.4,0);

            glRotatef(angle,0,0,1);

            glTranslatef(+0.8,-0.4,0);

            glColor3f(0,1,0);

            glRectf(-0.8,0.5,-1.1,0.3);

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit( &argc , argv );

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("Homework13_TRT");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

4. 鍵盤滑鼠控制關節手臂旋轉

-> 0,1,2,3分別控制不同關節,按下後可用滑鼠去旋轉關節

```cpp

#include <GL/glut.h>

float angle[20],oldX=0;

int angleID=0; ///0:第0個關節,1:第1個關節

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

{

    if(key=='0') angleID=0;

    if(key=='1') angleID=1;

    if(key=='2') angleID=2;

    if(key=='3') angleID=3;

}

void mouse(int button,int state,int x,int y)

{

    oldX = x ;

}

void motion(int x,int y)

{

    angle[angleID] += (x-oldX);

    oldX = x;

    glutPostRedisplay();

}

#include <math.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glRectf(0.3,0.5,-0.3,-0.2);

    glPushMatrix();

        glTranslatef(0.3,0.5,0);

        glRotatef(angle[0],0,0,1);

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.8,0.3);

        glPushMatrix();

            glTranslatef(0.8,0.4,0);

            glRotatef(angle[1],0,0,1);

            glTranslatef(-0.8,-0.4,0);

            glColor3f(0,1,0);

            glRectf(0.8,0.5,1.1,0.3);

        glPopMatrix();

    glPopMatrix();

    glPushMatrix();

        glTranslatef(-0.3,0.5,0);

        glRotatef(angle[2],0,0,1);

        glTranslatef(+0.3,-0.4,0);

        glColor3f(1,0,0);

        glRectf(-0.3,0.5,-0.8,0.3);

        glPushMatrix();

            glTranslatef(-0.8,0.4,0);

            glRotatef(angle[3],0,0,1);

            glTranslatef(+0.8,-0.4,0);

            glColor3f(0,1,0);

            glRectf(-0.8,0.5,-1.1,0.3);

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit( &argc , argv );

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("Homework13_many_TRT");

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

```