你的筆記 week06

 1-1.先去下載windows.zip跟data.zip然後把data放進windows 並開啟transformation 嘗試調整比較下方的 swap translates跟swap rotatef(自轉VS公轉)

2-1複製上週程式碼並增加顯示位置

程式碼:

#include<GL/glut.h>

#include <stdio.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("現在按下:%c 座標在:%d %d\n",key ,x ,y);

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);

    glutCreateWindow("Week06 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

2-2 新增mouse跟motion函式

2-3把mouse函式根motion裡面的東西新增 並設定mouseX跟mouseY oldX跟oldY變數來調整滑鼠拖曳茶壺

程式碼:

#include<GL/glut.h>

#include <stdio.h>

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

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)

{

    printf("現在按下:%c 座標在:%d %d\n",key ,x ,y);

}

void mouse(int buuton, 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("Week06 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

2-4註解掉滑鼠移動 並新增放大縮小

程式碼:

#include<GL/glut.h>

#include <stdio.h>

float x=0,y=0,z=0,scale=1.0, oldX,oldY;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

        glPushMatrix();

        glScalef(scale,scale,scale);

        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)

{

    printf("現在按下:%c 座標在:%d %d\n",key ,x ,y);

}

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

{

    oldX = mouseX;oldY=mouseY;

}

void motion (int mouseX,int mouseY)

{

    if(mouseX>oldX)scale=scale*1.01;

    if(mouseX<oldX)scale=scale*0.99;

    //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("Week06 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

2-5

程式碼:

#include<GL/glut.h>

#include <stdio.h>

float x=0,y=0,z=0,scale=1.0,angle=0.0, oldX,oldY;

int now=1;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

        glPushMatrix();

        glScalef(scale,scale,scale);

        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)

{

    //printf("現在按下:%c 座標在:%d %d\n",key ,x ,y);

    if(key=='w'||key=='W')now=1;

    if(key=='e'||key=='E')now=2;

    if(key=='r'||key=='R')now=3;

}

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

{

    oldX = mouseX;oldY=mouseY;

}

void motion (int mouseX,int mouseY)

{

    if(now==1){

    x += (mouseX-oldX);

    y += (mouseY-oldY);

   }else if(now==3){

       if(mouseX>oldX)scale=scale*1.01;

       if(mouseY>oldY)scale=scale*0.99;

    }

    oldX=mouseX; oldY=mouseY;

    display();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);

    glutCreateWindow("Week06 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}

2-6

更改背景為灰色，並把程式碼調整成可以調整大小跟位置以及旋轉

程式碼:

#include<GL/glut.h>

#include <stdio.h>

float x=250,y=250,z=0,scale=1.0,angle=0.0, oldX,oldY;

int now=1;

void display()

{

    glClearColor(0.5,0.5,0.5,1);

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

        glPushMatrix();

        glScalef(scale,scale,scale);

        glTranslatef((x-250)/250.0,-(y-250)/250.0,z);

        glRotatef(angle,0,0,1);

        glColor3f(1,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

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

{

    //printf("現在按下:%c 座標在:%d %d\n",key ,x ,y);

    if(key=='w'||key=='W')now=1;

    if(key=='e'||key=='E')now=2;

    if(key=='r'||key=='R')now=3;

}

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

{

    oldX = mouseX;oldY=mouseY;

}

void motion (int mouseX,int mouseY)

{

    if(now==1){

    x += (mouseX-oldX);

    y += (mouseY-oldY);

    }else if(now==2){

        angle+=(mouseX-oldX);

    }else if(now==3){

       if(mouseX>oldX)scale=scale*1.01;

       if(mouseY>oldY)scale=scale*0.99;

    }

    oldX=mouseX; oldY=mouseY;

    display();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);

    glutInitWindowSize(500,500);

    glutCreateWindow("Week06 keyboard");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutMainLoop();

}