豪哥的電腦圖學筆記week17

 豪哥的電腦圖學筆記week17

step02-1

1.working dir 路徑改成 "." 然後桌面freeglut資料夾複製freeglut.dll進專案資料夾

茶壺打光

#include <GL/glut.h>

#include <stdio.h>

void display(){

    glClearColor(1,1,0,0);

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,0,0);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };

const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };

const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };

const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

void myLight(){

    glEnable(GL_DEPTH_TEST);

    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);

    glEnable(GL_NORMALIZE);

    glEnable(GL_COLOR_MATERIAL);

    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);

    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);

    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);

    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);

    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);

    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week17 demo");

    glutDisplayFunc(display);

    myLight();

    glutMainLoop();

}

豪哥圖學筆記week16

week16筆記

step01-1

alpha內插公式  alpha '0.0~1.0'

angle=alpha*新+(1-alpha)*舊

alpha:0 > 舊

alpha:0.5 > 半新半舊

alpha:1 > 新

可以用excel來實作

step01-2

用week15_angles_TRT_again 拿來改

1.File new project week16_interpolation 內插

2.按s存一行,按r動作不連續

///week16_interpolation

///改編自week15_angles_TRT_again

#include <GL/glut.h>

#include <stdio.h>

float angle[20],oldX=0;

int angleID=0;

FILE * fout=NULL, * fin = NULL;

void myWrite()

{///每呼叫一次myWrite

    if(fout == NULL)fout=fopen("file.txt","w+");

    for(int i = 0;i<20;i++)

    {

        printf("%.1f ",angle[i]);///小黑印出來

        fprintf(fout,"%.1f ",angle[i]);///檔案印出來

    }///這裡老師沒有fclose

    printf("\n");///小黑印出跳行

    fprintf(fout,"\n");///檔案跳行

}

float NewAngle[20],OldAngle[20];

void myRead()

{

    if(fout!=NULL){fclose(fout); fout=NULL;}

    if(fin==NULL) fin=fopen("file.txt","r");

    for(int i=0;i<20;i++)

    {

        OldAngle[i] = NewAngle[i];

        fscanf(fin, "%f", &NewAngle[i] );

        ///fscanf(fin,"%f",&angle[i]);

    }

    glutPostRedisplay();///重劃畫面

}

void myInterpolate(float alpha){

    for(int i=0;i<20;i++){

        angle[i]= alpha * NewAngle[i] + (1-alpha) * OldAngle[i];

    }

}

int t=0;

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

{

    if(key=='p'){

        if(t%30==0) myRead();

        myInterpolate( (t%30)/30.0 );///介於0.0~1.0

        glutPostRedisplay();

        t++;

    }

    if(key=='s') myWrite();///調好動作才save存檔

    if(key=='r') myRead();

    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);

    ///myWrite();

    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,-0.5);

    glPushMatrix();

        glTranslatef(0.3,0.4,0);

        glRotatef(angle[0],0,0,1);

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

        glPushMatrix();

            glTranslatef(0.7,0.4,0);

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

            glTranslatef(-0.7,-0.4,0);

            glColor3f(0,1,0);

            glRectf(0.7,0.5,1.0,0.3);

        glPopMatrix();

    glPopMatrix();

        glPushMatrix();

            glTranslatef(-0.3,0.4,0);

            glRotatef(angle[2],0,0,1);

            glTranslatef(0.3,-0.4,0);

            glColor3f(1,0,0);

            glRectf(-0.3,0.5,-0.7,0.3);

            glPushMatrix();

                glTranslatef(-0.7,0.4,0);

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

                glTranslatef(0.7,-0.4,0);

                glColor3f(0,1,0);

                glRectf(-0.7,0.5,-1.0,0.3);

            glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

 }

 int main(int argc, char *argv[])

 {

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week15_angles_TRT_again");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    glutDisplayFunc(display);

    glutMainLoop();

 }

step02-1

///week16_interpolation

///改編自week15_angles_TRT_again

#include <GL/glut.h>

#include <stdio.h>

float angle[20],oldX=0;

int angleID=0;

FILE * fout=NULL, * fin = NULL;

void myWrite()

{///每呼叫一次myWrite

    if(fout == NULL)fout=fopen("file.txt","w+");

    for(int i = 0;i<20;i++)

    {

        printf("%.1f ",angle[i]);///小黑印出來

        fprintf(fout,"%.1f ",angle[i]);///檔案印出來

    }///這裡老師沒有fclose

    printf("\n");///小黑印出跳行

    fprintf(fout,"\n");///檔案跳行

}

float NewAngle[20],OldAngle[20];

void myRead()

{

    if(fout!=NULL){fclose(fout); fout=NULL;}

    if(fin==NULL) fin=fopen("file.txt","r");

    for(int i=0;i<20;i++)

    {

        OldAngle[i] = NewAngle[i];

        fscanf(fin, "%f", &NewAngle[i] );

        ///fscanf(fin,"%f",&angle[i]);

    }

    glutPostRedisplay();///重劃畫面

}

void myInterpolate(float alpha){

    for(int i=0;i<20;i++){

        angle[i]= alpha * NewAngle[i] + (1-alpha) * OldAngle[i];

    }

}

///int t=0;

void timer(int t){

    if(t%50==0) myRead();

    myInterpolate((t%50)/50.0);

    glutPostRedisplay();

    glutTimerFunc(20,timer,t+1);

}

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

{

    if(key=='p'){

        myRead();

        glutTimerFunc(0,timer,0);

        ///if(t%30==0) myRead();

        ///myInterpolate( (t%30)/30.0 );///介於0.0~1.0

        ///glutPostRedisplay();

        ///t++;

    }

    if(key=='s') myWrite();///調好動作才save存檔

    if(key=='r') myRead();

    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);

    ///myWrite();

    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,-0.5);

    glPushMatrix();

        glTranslatef(0.3,0.4,0);

        glRotatef(angle[0],0,0,1);

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

        glPushMatrix();

            glTranslatef(0.7,0.4,0);

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

            glTranslatef(-0.7,-0.4,0);

            glColor3f(0,1,0);

            glRectf(0.7,0.5,1.0,0.3);

        glPopMatrix();

    glPopMatrix();

        glPushMatrix();

            glTranslatef(-0.3,0.4,0);

            glRotatef(angle[2],0,0,1);

            glTranslatef(0.3,-0.4,0);

            glColor3f(1,0,0);

            glRectf(-0.3,0.5,-0.7,0.3);

            glPushMatrix();

                glTranslatef(-0.7,0.4,0);

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

                glTranslatef(0.7,-0.4,0);

                glColor3f(0,1,0);

                glRectf(-0.7,0.5,-1.0,0.3);

            glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

 }

 int main(int argc, char *argv[])

 {

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week15_angles_TRT_again");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    glutDisplayFunc(display);

    glutMainLoop();

 }

step03-1

1.new project week16_camera_projection_gluLookAt

#include <GL/glut.h>

void reshape(int w,int h){

    float ar = (float) w/(float) h;

    glViewport(0,0,w,h);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    gluPerspective(60,ar,0.1,100);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

    gluLookAt(0,0,3, ///eye

              0,0,0, ///center看哪裡

              0,1,0);///up向量

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(1);

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week16 camera");

    glutDisplayFunc(display);

    glutReshapeFunc(reshape);

    glutMainLoop();

}

steo03-2

滑鼠可拖曳

新加的程式碼

#include <GL/glut.h>

void reshape(int w,int h){

    float ar = (float) w/(float) h;

    glViewport(0,0,w,h);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    gluPerspective(60,ar,0.1,100);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

    gluLookAt(0,0,3, ///eye

              0,0,0, ///center看哪裡

              0,1,0);///up向量

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(1);

    glutSwapBuffers();

}

void motion(int x,int y){

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

    gluLookAt((x-150)/150.0,(y-150)/150.0,3, ///eye

              0,0,0, ///center看哪裡

              0,1,0);///up向量

    glutPostRedisplay();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week16 camera");

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutReshapeFunc(reshape);

    glutMainLoop();

}

豪哥的電腦圖學作業week15

 電腦圖學筆記week15

step01-1

PlaySound() 更詳細解說

0.New Empty File,存檔成week15-1_PlaySound.cpp

1.#include<mmsystem.h>上週教的

2.#include<windows.h>這週教的

3.PlaySound( " 檔名.wav" , NULL,SND_ASYNC );//上週

4.PlaySound( "檔名.wav" , NULL,SND_SYNC );//這週

5.Setting-Complier Setting,Linker 加入 winmm

6.下載個wav檔放進程式碼目錄

#include <windows.h>

#include <stdio.h>

int main()

{

    printf("PlaySound()之前\n");

    PlaySound("badbad.wav",NULL,SND_SYNC);

    printf("PlaySound()之後\n");

}

可播放音樂

stoe01-2

0.New Empty File,存成week15-2_SND_SYNC_SND_ASYNC

#include <windows.h>

#include <stdio.h>

int main()

{

    PlaySound("badbad.wav",NULL,SND_ASYNC);///ASYNC不等待

    while(1){

        printf("請輸入數字: ");

        int N;

        scanf("%d",&N);

        if(N==1) PlaySound("do.wav",NULL,SND_ASYNC);

        if(N==2) PlaySound("re.wav",NULL,SND_ASYNC);

        if(N==3) PlaySound("mi.wav",NULL,SND_ASYNC);

    }

}///最後一行,就沒了

ASYNC互動效果比較好

step02-1

WAV (大/原始)vs. MP3(小/有壓縮)

PlaySound只能用WAV檔

0. New Empty File ,week15-3_mp3.cpp

1.在moodle下載 CMP3_MCI.h

2.程式碼 #include "CMP3_MCI.h"

3.宣告 CMP3_MCI mp3;

4.mp3.Load("檔名.mp3");

5.mp3.Play();

#include <stdio.h>

#include "CMP3_MCI.h"

CMP3_MCI mp3;

int main()

{

    mp3.Load("badbad.mp3");

    mp3.Play();

    printf("隨便等你輸入數字,程式就卡住囉: ");

    int N;

    scanf("%d",&N);

}

step02-2

0.開新GLUT專案 week15_angles_TRT_again

1.複製上週程式，試跑2.不像動畫 動作不自然

3.myWrite()會寫一行 myRead()會讀一行

4.不能把myWrite()放motion()

5.關節動作調好再存檔

6.所以擺完動作後再按s存檔

///week15修改自week14_angles_fprintf

#include <GL/glut.h>

#include <stdio.h>

float angle[20],oldX=0;

int angleID=0;

FILE * fout=NULL, * fin = NULL;

void myWrite()

{///每呼叫一次myWrite

    if(fout == NULL)fout=fopen("file.txt","w+");

    for(int i = 0;i<20;i++)

    {

        printf("%.1f ",angle[i]);///小黑印出來

        fprintf(fout,"%.1f ",angle[i]);///檔案印出來

    }///這裡老師沒有fclose

    printf("\n");///小黑印出跳行

    fprintf(fout,"\n");///檔案跳行

}

void myRead()

{

    if(fout!=NULL){fclose(fout); fout=NULL;}

    if(fin==NULL) fin=fopen("file.txt","r");

    for(int i=0;i<20;i++)

    {

        fscanf(fin,"%f",&angle[i]);

    }

    glutPostRedisplay();///重劃畫面

}

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

{

    if(key=='s') myWrite();///調好動作才save存檔

    if(key=='r') myRead();

    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);

    ///myWrite();

    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,-0.5);

    glPushMatrix();

        glTranslatef(0.3,0.4,0);

        glRotatef(angle[0],0,0,1);

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

        glPushMatrix();

            glTranslatef(0.7,0.4,0);

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

            glTranslatef(-0.7,-0.4,0);

            glColor3f(0,1,0);

            glRectf(0.7,0.5,1.0,0.3);

        glPopMatrix();

    glPopMatrix();

        glPushMatrix();

            glTranslatef(-0.3,0.4,0);

            glRotatef(angle[2],0,0,1);

            glTranslatef(0.3,-0.4,0);

            glColor3f(1,0,0);

            glRectf(-0.3,0.5,-0.7,0.3);

            glPushMatrix();

                glTranslatef(-0.7,0.4,0);

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

                glTranslatef(0.7,-0.4,0);

                glColor3f(0,1,0);

                glRectf(-0.7,0.5,-1.0,0.3);

            glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

 }

 int main(int argc, char *argv[])

 {

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week15_angles_TRT_again");

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    glutDisplayFunc(display);

    glutMainLoop();

 }

step03-1

機器人擺動

1.開新GLUT專案 week15_hw_gundam_parts

2.工作執行目錄 working.dir 不太好, 要改到現在程式的目錄

3.用Notepad++編輯 cbp檔的路徑，working dir 路徑改成小數點，把freeglut.dll放進目錄

豪哥的電腦圖學筆記week14

 Week14筆記

step01-1

寫檔(為了記錄動畫的動作)

0.new empty file,存檔成week14-1_fprintf裡的week14.cpp

1.fopen() 開檔案

2.printf() ==> fprintf()

3.fclose() 關檔案

按build後再按build and run

#include <stdio.h>

int main()

{///檔案指標 fout 開啟檔案(檔名,write模式)

    FILE * fout = fopen("file.txt" , "w+");

    printf(      "Hello World\n");

    fprintf(fout,"Hello World\n");

    fclose(fout);///關閉檔案

}

step01-2

讀檔file input

0.new empty file,存檔成week14-3_fprintf_fscanf裡的week14-2.cpp

1.把剛剛week14-1.cpp拿來用

2.另外一組file*fin

3.scanf ()==> fscanf()

4.fclose()

///week14-2

#include <stdio.h>

int main()

{///檔案指標 fout 開啟檔案(檔名,write模式)

    FILE * fout = fopen("file.txt" , "w+");

    fprintf(fout,"3.1415926\n");

    fclose(fout);///關閉檔案

    float angle=0;

    FILE * fin = fopen("file.txt","r");

    fscanf(fin,"%f",&angle); ///沒加&會當掉

    printf("讀到了角度:%f",angle);

    fclose(fin);

}

step01-3

把上週的程式 week13_rect_many_TRT 拿來改成 week14

0.File New Project,GLUT專案 week14_angles_fprintf

///week14_angles_fprintf 改自 week13_rect_many_TRT

#include <GL/glut.h>

#include <stdio.h>

float angle[20],oldX=0;

int angleID=0;///0號關節,1號關節...

FILE * fout = NULL;

void myWrite(){

    if(fout==NULL) fout=fopen("file.txt","w+");

    for(int i=0;i<20;i++){

        printf("%.1f",angle[i]);///小黑印出來

        fprintf(fout , "%.1f", angle[i]);///檔案印出來 

    }

}

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);

    myWrite();

    oldX=x;

    glutPostRedisplay();///請GLUT重劃畫面

}

 void display()

 {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);///白色

    glRectf(0.3,0.5,-0.3,-0.5);///身體

    glPushMatrix();

        glTranslatef(0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(-0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

        glPushMatrix();

            glTranslatef(0.7,0.4,0);///把手肘掛回去

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

            glTranslatef(-0.7,-0.4,0);

            glColor3f(0,1,0);///綠色的

            glRectf(0.7,0.5,1.0,0.3);///下手肘

        glPopMatrix();

    glPopMatrix();

    glPushMatrix();

        glTranslatef(-0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(-0.3,0.5,-0.7,0.3);

        glPushMatrix();

            glTranslatef(-0.7,0.4,0);///把手肘掛回去

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

            glTranslatef(0.7,-0.4,0);

            glColor3f(0,1,0);///綠色的

            glRectf(-0.7,0.5,-1.0,0.3);///下手肘

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

 }

 int main(int argc, char *argv[])//main()主函式 進階版

 {

    glutInit(&argc,argv);//把參數送給glutInit初始化

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);//雙緩衝區+3D深度功能

    ///glutInitWindowSize(600,600);

    glutCreateWindow("week13_rect_TRT");//開GLUT視窗

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);//顯示用的函式

    glutMainLoop();

 }

step02-1

0.加新專案 week14_angles_fprintf_fscanf

1.複製前一個版本的程式

2.要寫void myRead()

3.鍵盤裡，按下"r"呼叫myRead()

///week14_angles_fprintf_fscanf

#include <GL/glut.h>

#include <stdio.h>

float angle[20],oldX=0;

int angleID=0;///0號關節,1號關節...

FILE * fout = NULL , *fin=NULL;

void myWrite(){

    if(fout==NULL) fout=fopen("file.txt","w+");

    for(int i=0;i<20;i++){

        printf("%.1f ",angle[i]);///小黑印出來

        fprintf(fout , "%.1f ", angle[i]);///檔案印出來

    }

    printf("\n");///每呼叫一次小黑跳行

    fprintf(fout,"\n");///每呼叫一次檔案也跳行

}

void myRead(){

    if(fout!=NULL) {fclose(fout); fout=NULL;}

    if(fin==NULL) fin=fopen("file.txt","r");

    for(int i=0;i<20;i++){

        fscanf(fin,"%f",&angle[i]);

    }

    glutPostRedisplay();///重畫畫面

}

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

    if(key=='r') myRead();

    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);

    myWrite();

    oldX=x;

    glutPostRedisplay();///請GLUT重劃畫面

}

 void display()

 {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);///白色

    glRectf(0.3,0.5,-0.3,-0.5);///身體

    glPushMatrix();

        glTranslatef(0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(-0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

        glPushMatrix();

            glTranslatef(0.7,0.4,0);///把手肘掛回去

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

            glTranslatef(-0.7,-0.4,0);

            glColor3f(0,1,0);///綠色的

            glRectf(0.7,0.5,1.0,0.3);///下手肘

        glPopMatrix();

    glPopMatrix();

    glPushMatrix();

        glTranslatef(-0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(-0.3,0.5,-0.7,0.3);

        glPushMatrix();

            glTranslatef(-0.7,0.4,0);///把手肘掛回去

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

            glTranslatef(0.7,-0.4,0);

            glColor3f(0,1,0);///綠色的

            glRectf(-0.7,0.5,-1.0,0.3);///下手肘

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

 }

 int main(int argc, char *argv[])//main()主函式 進階版

 {

    glutInit(&argc,argv);//把參數送給glutInit初始化

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);//雙緩衝區+3D深度功能

    ///glutInitWindowSize(600,600);

    glutCreateWindow("week13_rect_TRT");//開GLUT視窗

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);//顯示用的函式

    glutMainLoop();

 }

step02-2

0.file.txt放在奇怪的目錄

1.GLUT 專案需要freeglut.dll 所以working dir被設到 freeglut/bin裡 

2.在cbp project檔案裡 有working dir的設定 工作執行的目錄

3.使用Notepad++把.cbp的 working_dir 路徑改成.後存檔

4.再把桌面freeglut/bin裡的freeflut.dll移動到專案資料夾裡

step03-1

glutTimerFunc()計時器

0.viod timer(int t)寫timer函式

1.glutTimerFunc(等多久,timer,t參數):

2.開新專案 week14_timer

3.其他GLUT 10行程式

#include <GL/glut.h>

#include <stdio.h>

void timer(int t){

    printf("起床,現在時間: %d\n",t);

}

void display(){

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutTimerFunc(1000,timer,1);

    glutTimerFunc(2000,timer,2);

    glutTimerFunc(3000,timer,3);

    glutTimerFunc(4000,timer,4);

    glutTimerFunc(5000,timer,5);

    glutDisplayFunc(display);

    glutMainLoop();

}

step03-2

五秒後開始計時

播放聲音PlaySound()，先下載 do.wav

1.繼續改 week14_timer_one_by_one

2.#include <mmsystem.h>

3.PlaySound("do.wav",NULL,SND_ASYNC);

#include <GL/glut.h>

#include <stdio.h>

void timer(int t){

    printf("起床,現在時間: %d\n",t);

    glutTimerFunc(1000,timer,t+1);

}

void display(){

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutTimerFunc(5000,timer,0);///設定五秒後第0個timer

    glutDisplayFunc(display);

    glutMainLoop();

}

 

#include <GL/glut.h>

#include <stdio.h>

#include <mmsystem.h>

void timer(int t){

    printf("起床,現在時間: %d\n",t);

    PlaySound("do.wav",NULL,SND_ASYNC);

    glutTimerFunc(2000,timer,t+1);

}

void display(){

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14 timer");

    glutTimerFunc(5000,timer,0);///設定五秒後第0個timer

    glutDisplayFunc(display);

    glutMainLoop();

}

會有聲音

豪哥電腦圖學筆記 week13

 week13

step01-1

1.新增專案

2.加入新教的程式碼(rect)，glutInitWindowSize(600,600);可調整視窗大小

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT || GL_DEPTH_BUFFER_BIT);

    glRectf(0.3,0.5,-0.3,-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();

}

step01-2

1.加點色彩

2.準備好TRT程式碼

3.加上紅方塊

#include <GL/glut.h>

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,-0.5);

    glPushMatrix();

        ///glTranslatef();///把手臂掛回身體

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

        ///glTranslatef(x2,y2,z2);///把旋轉中心放中心

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

    glPopMatrix();

    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();

}

step01-3

1.把旋轉中心放在正中心

把(0.3,0.4)移動到(0,0)

glTranslatef(-0.3,-0.4,0);

2.移動45度，加角度float angle=45;，刪掉rotatef註解

3.移回正確位置

程式碼

#include <GL/glut.h>

float angle=45;

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,-0.5);

    glPushMatrix();

        glTranslatef(0.3,0.4,0);///把手臂掛回身體

        glRotatef(angle,0,0,1);///旋轉

        glTranslatef(-0.3,-0.4,0);///把旋轉中心放中心

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

    glPopMatrix();

    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();

}

step2-1

1.要用mouse motion旋轉角度

程式碼

#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();///請GLUT重劃畫面

}

 void display()

 {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);///白色

    glRectf(0.3,0.5,-0.3,-0.5);///身體

    glPushMatrix();

        glTranslatef(0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(-0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

    glPopMatrix();

    glutSwapBuffers();

 }

 int main(int argc, char *argv[])//main()主函式 進階版

 {

    glutInit(&argc,argv);//把參數送給glutInit初始化

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);//雙緩衝區+3D深度功能

    ///glutInitWindowSize(600,600);

    glutCreateWindow("week13_rect_TRT");//開GLUT視窗

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);//顯示用的函式

    glutMainLoop();

 }

step2-2

1.新開專案

2.新增第二個關節

///week13_rect_TRT_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();///請GLUT重劃畫面

}

 void display()

 {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);///白色

    glRectf(0.3,0.5,-0.3,-0.5);///身體

    glPushMatrix();

        glTranslatef(0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(-0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

        glPushMatrix();

            ///glTranslatef(x,y,z);

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

            ///glTranslatef(0,1,10);

            glColor3f(0,1,0);///綠色的

            glRectf(0.7,0.5,1.0,0.3);///下手肘

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

 }

 int main(int argc, char *argv[])//main()主函式 進階版

 {

    glutInit(&argc,argv);//把參數送給glutInit初始化

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);//雙緩衝區+3D深度功能

    ///glutInitWindowSize(600,600);

    glutCreateWindow("week13_rect_TRT");//開GLUT視窗

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);//顯示用的函式

    glutMainLoop();

 }

step2-3

程式碼

///week13_rect_TRT_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();///請GLUT重劃畫面

}

 void display()

 {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);///白色

    glRectf(0.3,0.5,-0.3,-0.5);///身體

    glPushMatrix();

        glTranslatef(0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(-0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

        glPushMatrix();

            glTranslatef(0.7,0.4,0);///把手肘掛回去

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

            glTranslatef(-0.7,-0.4,0);

            glColor3f(0,1,0);///綠色的

            glRectf(0.7,0.5,1.0,0.3);///下手肘

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

 }

 int main(int argc, char *argv[])//main()主函式 進階版

 {

    glutInit(&argc,argv);//把參數送給glutInit初始化

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);//雙緩衝區+3D深度功能

    ///glutInitWindowSize(600,600);

    glutCreateWindow("week13_rect_TRT");//開GLUT視窗

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);//顯示用的函式

    glutMainLoop();

 }

step03-1

1.開新專案 week13_rect_many_TRT

複製中間的程式碼

修改正負值

程式碼

///week13_rect_many_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();///請GLUT重劃畫面

}

 void display()

 {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);///白色

    glRectf(0.3,0.5,-0.3,-0.5);///身體

    glPushMatrix();

        glTranslatef(0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(-0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

        glPushMatrix();

            glTranslatef(0.7,0.4,0);///把手肘掛回去

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

            glTranslatef(-0.7,-0.4,0);

            glColor3f(0,1,0);///綠色的

            glRectf(0.7,0.5,1.0,0.3);///下手肘

        glPopMatrix();

    glPopMatrix();

    glPushMatrix();

        glTranslatef(-0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(-0.3,0.5,-0.7,0.3);

        glPushMatrix();

            glTranslatef(-0.7,0.4,0);///把手肘掛回去

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

            glTranslatef(0.7,-0.4,0);

            glColor3f(0,1,0);///綠色的

            glRectf(-0.7,0.5,-1.0,0.3);///下手肘

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

 }

 int main(int argc, char *argv[])//main()主函式 進階版

 {

    glutInit(&argc,argv);//把參數送給glutInit初始化

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);//雙緩衝區+3D深度功能

    ///glutInitWindowSize(600,600);

    glutCreateWindow("week13_rect_TRT");//開GLUT視窗

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);//顯示用的函式

    glutMainLoop();

 }

step03-2

1.要多個角度float angle=0;

改成angle[20];

全部的angle都要改

很多關節要用keyboardfunc

後面要加glutKeyboardFunc(keyboard);

程式碼

///week13_rect_many_TRT

#include <GL/glut.h>

float angle[20],oldX=0;

int angleID=0;///0號關節,1號關節...

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();///請GLUT重劃畫面

}

 void display()

 {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);///白色

    glRectf(0.3,0.5,-0.3,-0.5);///身體

    glPushMatrix();

        glTranslatef(0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(-0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

        glPushMatrix();

            glTranslatef(0.7,0.4,0);///把手肘掛回去

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

            glTranslatef(-0.7,-0.4,0);

            glColor3f(0,1,0);///綠色的

            glRectf(0.7,0.5,1.0,0.3);///下手肘

        glPopMatrix();

    glPopMatrix();

    glPushMatrix();

        glTranslatef(-0.3,0.4,0);///把手臂掛在身上

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

        glTranslatef(0.3,-0.4,0);///挑整手臂的旋轉中心

        glColor3f(1,0,0);

        glRectf(-0.3,0.5,-0.7,0.3);

        glPushMatrix();

            glTranslatef(-0.7,0.4,0);///把手肘掛回去

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

            glTranslatef(0.7,-0.4,0);

            glColor3f(0,1,0);///綠色的

            glRectf(-0.7,0.5,-1.0,0.3);///下手肘

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

 }

 int main(int argc, char *argv[])//main()主函式 進階版

 {

    glutInit(&argc,argv);//把參數送給glutInit初始化

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);//雙緩衝區+3D深度功能

    ///glutInitWindowSize(600,600);

    glutCreateWindow("week13_rect_TRT");//開GLUT視窗

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);//顯示用的函式

    glutMainLoop();

 }

豪哥電腦圖學筆記week12

step1-1

1.主題TRT(移動-旋轉-移動)對特定軸轉動

2.下周考試TRT

step01-2

1.用程式來理解對特定軸轉動120.125.80.50/GL 

2.右下角點ToDraw 左邊黑色畫圖

3.ctrl-r reload可以清空

4.可以畫身體 手臂 叫做 myDrawObject(0)和myDrawObject(1)

5.改程式碼的順序

6.可以按angle= 再按空白鍵 會自動改變動畫

step2-1

1.把glRotatef()那一行變紅色，就可以移動左邊的東西

```cpp

glPushMatrix();

myDrawObject(0);//畫身體

glRotatef(angle,0,0,1);//這個旋轉，會轉下面整個東西

glTranslatef(-0.3,-0.19,0);//往左下方移(讓軸心 放世界的中心)

myDrawObject(1);//畫手臂(右上方)

glPopMatrix();

```

step2-2

講解下周考試題目

glPushMatrix();

glTranslatef(-0.5,-0.9,0);

glRotatef(-45,0,0,1);

glTranslatef(-0.8,0.9,0);

drawHand();

glPopMatrix();

會換圖

step2-3

1.開新GLUT專案 week12_TRT

2.把之前的10行筆記貼上來

3.茶壺旋轉

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glutSolidTeapot(0.3);

    glPushMatrix();

        glTranslatef(0.2,0,0);

        glRotatef(angle,0,0,1);

        glTranslatef(0.2,0,0);

        glColor3f(1,0,0);

        glutSolidTeapot(0.2);

    glPopMatrix();

    glutSwapBuffers();

    angle+=0.1; ///每次執行 display() 加1度

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week12 TRT");

    glutIdleFunc(display);

    glutDisplayFunc(display);

    glutMainLoop();

}

TRT2

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glutSolidTeapot(0.3);///茶壺當身體

     glPushMatrix();///右邊的手臂手肘

        glTranslatef(0.2,0,0);///(3)掛到右邊(整個往動)

        glRotatef(angle, 0,0,1);///(2)旋轉

        glTranslatef(0.2,0,0);

        glColor3f(1,0,0);

        glutSolidTeapot(0.2);///小茶壺，當作小手臂

        glPushMatrix();

            glTranslatef(0.2,0,0);///(3)掛到右邊(整個往動)

            glRotatef(angle, 0,0,1);///(2)旋轉

            glTranslatef(0.2,0,0);

            glColor3f(1,0,0);

            glutSolidTeapot(0.2);///小茶壺，當作小手肘

        glPopMatrix();

    glPopMatrix();

    glPushMatrix();///左邊的手臂手肘

        glTranslatef(-0.2,0,0);///(3)掛到左邊(整個往動)

        glRotatef(-angle, 0,0,1);///(2)旋轉

        glTranslatef(-0.2,0,0);

        glColor3f(1,0,0);

        glutSolidTeapot(0.2);///小茶壺，當作小手臂

        glPushMatrix();

            glTranslatef(-0.2,0,0);///(3)掛到左邊(整個往動)

            glRotatef(-angle, 0,0,1);///(2)旋轉

            glTranslatef(-0.2,0,0);

            glColor3f(1,0,0);

            glutSolidTeapot(0.2);///小茶壺，當作小手肘

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

    angle+=0.01; ///每次執行 display() 加1度

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week12_TRT");

    glutIdleFunc(display);

    glutDisplayFunc(display);

    glutMainLoop();

}

豪哥圖學筆記week11

電腦圖學week11

繼續實作glm模型練習

步驟一

1.安裝好freeglut

2.opencv裝好,opencv裡面設定調好

setting-compiler-search directories   compiler include  C:\OpenCV2.1\include

setting-compiler-search directories   Linker lib C:\OpenCV2.1\lib

setting-compiler-Linker  cv210 cxcore210 highgui210

3.重開codeblocks 開新專案

4.myGumdam.zip裡的data放進freeglut的bin裡打以下程式碼

#include <opencv/highgui.h>

int main()

{

    IplImage * img = cvLoadImage("data/Diffuse.jpg");

    cvShowImage("week11",img);

    cvWaitKey();

}

步驟二

把茶壺貼上鋼彈的貼圖

1.上面放上週的myTexture放在程式

2.下面放GLUT 10行程式

3.main()的glutMainLoop()之前,加入myTexture("data/Diffuse.jpg");

打以下程式碼

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include <GL/glut.h>

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage(filename); ///OpenCV讀圖

    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩 (需要cv.h)

    glEnable(GL_TEXTURE_2D); ///1. 開啟貼圖功能

    GLuint id; ///準備一個 unsigned int 整數, 叫 貼圖ID

    glGenTextures(1, &id); /// 產生Generate 貼圖ID

    glBindTexture(GL_TEXTURE_2D, id); ///綁定bind 貼圖ID

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖T, 就重覆貼圖

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖S, 就重覆貼圖

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /// 貼圖參數, 放大時的內插, 用最近點

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); /// 貼圖參數, 縮小時的內插, 用最近點

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);

    return id;

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT || GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week11 gundam");

    glutDisplayFunc(display);

    myTexture("data/Diffuse.jpg");

    glutMainLoop();

}

步驟三

1.jsyeh.org/3dcg10下載source.zip  (glm.h和glm.c和transformation.c)

2.glm.c改成glm.cpp,glm.cpp和glm.h 放進week11專案裡

3.add files glm.cpp

4.加入程式碼

#include後加入

#include "glm.h"

GLMmodel * pmodel =NULL;

display()裡加入

void display()

{

    glClear(GL_COLOR_BUFFER_BIT || GL_DEPTH_BUFFER_BIT);

    //glutSolidTeapot(0.3);

    if(pmodel == NULL){

        pmodel = glmReadOBJ("data/Gundam.obj");

        glmUnitize(pmodel);

        glmFacetNormals(pmodel);

        glmVertexNormals(pmodel ,90);

    }

    glmDraw(pmodel ,GLM_TEXTURE);

    glutSwapBuffers();

}

鋼彈模型程式碼

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include <GL/glut.h>

#include "glm.h"

GLMmodel * pmodel =NULL;

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage(filename); ///OpenCV讀圖

    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩 (需要cv.h)

    glEnable(GL_TEXTURE_2D); ///1. 開啟貼圖功能

    GLuint id; ///準備一個 unsigned int 整數, 叫 貼圖ID

    glGenTextures(1, &id); /// 產生Generate 貼圖ID

    glBindTexture(GL_TEXTURE_2D, id); ///綁定bind 貼圖ID

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖T, 就重覆貼圖

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖S, 就重覆貼圖

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /// 貼圖參數, 放大時的內插, 用最近點

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); /// 貼圖參數, 縮小時的內插, 用最近點

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);

    return id;

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT || GL_DEPTH_BUFFER_BIT);

    //glutSolidTeapot(0.3);

    if(pmodel == NULL){///如果是空指標，表示模型沒準備好

        pmodel = glmReadOBJ("data/Gundam.obj");///就讀模型

        glmUnitize(pmodel);///換算成Unit單位 -1...+1

        glmFacetNormals(pmodel);///重新計算模型的面的法向量

        glmVertexNormals(pmodel ,90);///重新計算模型的頂點的法向量

    }

    glmDraw(pmodel ,GLM_TEXTURE);///有模型後，畫面要記得畫貼圖

    glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week11 gundam");

    glutDisplayFunc(display);

    myTexture("data/Diffuse.jpg");

    glutMainLoop();

}

因為貼圖上下顛倒

所以用小畫家垂直翻轉 Diffuse.jpg     

步驟四

鋼彈轉動

#include <GL/glut.h>

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include "glm.h"

GLMmodel * pmodel=NULL;

///GLUquadric * sphere = NULL;///指標,指到2次曲面

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage(filename); ///OpenCV讀圖

    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩 (需要cv.h)

    glEnable(GL_TEXTURE_2D); ///1. 開啟貼圖功能

    GLuint id; ///準備一個 unsigned int 整數, 叫 貼圖ID

    glGenTextures(1, &id); /// 產生Generate 貼圖ID

    glBindTexture(GL_TEXTURE_2D, id); ///綁定bind 貼圖ID

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖T, 就重覆貼圖

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖S, 就重覆貼圖

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /// 貼圖參數, 放大時的內插, 用最近點

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); /// 貼圖參數, 縮小時的內插, 用最近點

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);

    return id;

}

float angle=0;///旋轉角度

 void display()

 {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,1,0);

        if(pmodel==NULL)///如果是空指標 表示模型還沒準備好

        {

            pmodel=glmReadOBJ("data/Gundam.obj");///讀模型

            glmUnitize(pmodel);///換算成unit單位大小

            glmFacetNormals(pmodel);///重新計算模型的面的法向量

            glmVertexNormals(pmodel,90);///重新計算模型頂點的法向量

        }

        glmDraw(pmodel,GLM_TEXTURE);///有模型後畫面要記得畫貼圖

    glPopMatrix();

    glutSwapBuffers();

    angle+=0.01;

 }

 int main(int argc, char *argv[])///main()主函式 進階版

 {

    glutInit(&argc,argv);///把參數送給glutInit初始化

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);///雙緩衝區+3D深度功能

    glutCreateWindow("week11_gundam");///開GLUT視窗

    glEnable(GL_DEPTH_TEST);

    glutDisplayFunc(display);///顯示用的函式

    glutIdleFunc(display);

    myTexture("data/Diffuse.jpg");

    ///myTexture("earth.jpg");

    ///sphere=gluNewQuadric();///準備好2次曲面

    glutMainLoop();

 }