古利夏醫生的艾爾迪亞日記week05

 

可以打出按下了甚麼按鍵

程式碼:

#include <stdio.h>

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,0);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

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

{

    printf("你按下了%c 在 座標 \n",key,x,y);

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05_keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

可以把茶壺拉來拉去

程式碼:

#include <stdio.h>

#include <GL/glut.h>

float x=0,y=0,z=0;

int oldX=0,oldY=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glTranslatef((x-150)/150.0,-(y-150)/150.0,z);

    glColor3f(1,1,0);

    glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void keyboard(unsigned char key,int mouseX,int mouseY)

{

}

void mouse (int button,int state,int mouseX,int mouseY)

{

}

void motion (int mouseX,int mouseY)

{

    x +=(mouseX-oldX); y+=(mouseY-oldY);

    oldX = mouseX; oldY = mouseY;

    display();

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05_keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

可以拉茶壺2.0 修正瞬間移動的錯誤

程式碼:

#include <stdio.h>

#include <GL/glut.h>

float x=150,y=150,z=0;

int oldX=0,oldY=0;

void display()

{

    glClearColor(0.5,0.5,0.5,1);

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glTranslatef((x-150)/150.0,-(y-150)/150.0,z);

    glColor3f(1,1,0);

    glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void keyboard(unsigned char key,int mouseX,int mouseY)

{

}

void mouse (int button,int state,int mouseX,int mouseY)

{

    oldX = mouseX;oldY = mouseY;

}

void motion (int mouseX,int mouseY)

{

    x +=(mouseX-oldX); y+=(mouseY-oldY);

    oldX = mouseX; oldY = mouseY;

    display();

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05_keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

可以放大縮小的茶壺

程式碼:

#include <stdio.h>

#include <GL/glut.h>

float x=150,y=150,z=0,scale=1.0;

int oldX=0,oldY=0;

void display()

{

    glClearColor(0.5,0.5,0.5,1);

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

    glTranslatef((x-150)/150.0,-(y-150)/150.0,z);

    glScalef(scale,scale,scale);

    glColor3f(1,1,0);

    glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void keyboard(unsigned char key,int mouseX,int mouseY)

{

}

void mouse (int button,int state,int mouseX,int mouseY)

{

    oldX = mouseX;oldY = mouseY;

}

void motion (int mouseX,int mouseY)

{

    if(mouseX-oldX >0) scale *=1.01;

    if(mouseX-oldX <0) scale *=0.99;

    oldX = mouseX; oldY = mouseY;

    display();

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week05_keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}