Lm's圖學筆記week14

 

glutSolidSphere(0.3,30,30);

改成 glutWireSphere(0.3, 30, 30);

等三秒會變成紅色背景

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutWireSphere(0.3, 30, 30);

    glutSwapBuffers();

}

void timer(int t){ ///timer響起時,做你要做的事

    glClearColor(1, 0, 0, 0);

    display();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutTimerFunc( 3000, timer, 0 );

    glutMainLoop();

}

三秒後 背景變顏色,方塊開始轉動

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle, 0, 0, 1);

        glutSolidCube(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void timer(int t){ ///timer響起時,做你要做的事

    glutTimerFunc(30, timer, t+1);

    glClearColor(1,0,0,0);

    angle++;

    display();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutTimerFunc( 3000, timer, 0 );

    glutMainLoop();

}

調整時間及角度讓轉速增加轉動方式改變

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle, 0, 0, 1);

        glutSolidCube(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int diff=2;

void timer(int t){ ///timer響起時,做你要做的事

    glutTimerFunc(20, timer, t+1);

    glClearColor(1,0,0,0);

    if(angle>90) diff=-2;

    if(angle<0 ) diff=+2;

    angle+= diff;

    display();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutTimerFunc( 3000, timer, 0 );

    glutMainLoop();

}

畫關節身體,關節可以轉動

#include <GL/glut.h>

float angle=0;

void drawarm1(){

    glPushMatrix();

    glScalef(1, 0.5, 0.5);///變細長手臂

    glColor3f(0,1,0); glutSolidCube(0.2); ///綠色手臂

    glPopMatrix();

}

void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

       glColor3f(1,1,1); glutSolidCube(0.4);///白色身體

       glPushMatrix();

           glTranslatef(-0.2,0.2,0);///掛上肩膀

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

           glTranslatef(-0.1, 0, 0);///旋轉中心(關節)移到畫面中心

           drawarm1();///綠色手臂

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int diff=2;

void timer(int t){ ///timer響起時,做你要做的事

    glutTimerFunc(20, timer, t+1);

    //glClearColor(1,0,0,0);

    if(angle>90) diff=-2;

    if(angle<0 ) diff=+2;

    angle+= diff;

    display();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutDisplayFunc(display);

    glutTimerFunc( 3000, timer, 0 );

    glutMainLoop();

}