六到布行的部落13

20190606

(1)作業Q&A
安裝openCV

安裝過程

(2)複習:貼圖

一張貼圖版本

#include <GL/glut.h>

#include <opencv/highgui.h> ///OpenCV High GUI讀圖

#include <opencv/cv.h>

///程式碼是對的, 但是沒有設定好include, lib, bin

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot( 0.3 );

    glutSwapBuffers();

}

GLuint id;

void myInit()

{

    glEnable(GL_TEXTURE_2D);

    IplImage * img = cvLoadImage("marvel.jpg");

    cvCvtColor(img, img, CV_BGR2RGB);///防止顏色跑掉

    glGenTextures(1, &id );

    glBindTexture(GL_TEXTURE_2D, id);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

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

}

int main(int argc, char **argv)

{

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

    ///cvShowImage("opencv", img);

    ///cvWaitKey(0);///等你按按鍵

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);

    glutCreateWindow("GLUT");///之後

    ///建好GLUT視窗,可以開始準備 3D 貼圖 (要在create...MainLoop才能建貼圖)

    myInit();///我們的貼圖在這裡

    glutDisplayFunc(display);

    glutMainLoop();///之前

}

多張貼圖的版本
#include <GL/glut.h>
#include <opencv/highgui.h> ///OpenCV High GUI讀圖
#include <opencv/cv.h> ///OpenCV cvCvtColor() to convert color
///程式碼是對的, 但是沒有設定好include, lib, bin
GLuint id1, id2, id3;///NOW2
float a=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glBindTexture(GL_TEXTURE_2D, id1);///id1 for background
    glBegin(GL_POLYGON);
        glTexCoord2f(0, 0); glVertex3f(-1, +1, 0);
        glTexCoord2f(0, 1); glVertex3f(-1, -1, 0);
        glTexCoord2f(1, 1); glVertex3f(+1, -1, 0);
        glTexCoord2f(1, 0); glVertex3f(+1, +1, 0);
    glEnd();
    glBindTexture(GL_TEXTURE_2D, id3);///id3 for rotating square
    glPushMatrix();
        glTranslatef(0.5, 0.5, 0);
        glRotatef(a++, 0, 0, 1);
        glScalef(0.3, 0.3, 0.3);
        glBegin(GL_POLYGON);
            glTexCoord2f(0, 0); glVertex3f(-1, +1, 0);
            glTexCoord2f(0, 1); glVertex3f(-1, -1, 0);
            glTexCoord2f(1, 1); glVertex3f(+1, -1, 0);
            glTexCoord2f(1, 0); glVertex3f(+1, +1, 0);
        glEnd();
    glPopMatrix();

    glBindTexture(GL_TEXTURE_2D, id2);///id2 for teapot
    glutSolidTeapot( 0.3 );
    glutSwapBuffers();
}
///void myInit()
GLuint myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename); ///NOW OpenCV
    cvCvtColor(img, img, CV_BGR2RGB);///convert color ///NOW OpenCV

    GLuint id;
    glEnable(GL_TEXTURE_2D);
    glGenTextures(1, &id );
    glBindTexture(GL_TEXTURE_2D, id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
int main(int argc, char **argv)
{
    ///IplImage * img = cvLoadImage("marvel.jpg");
    ///cvShowImage("opencv", img);
    ///cvWaitKey(0);///等你按按鍵
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
    glutCreateWindow("GLUT");///之後
    ///建好GLUT視窗,可以開始準備 3D 貼圖 (要在create...MainLoop才能建貼圖)
    id1 = myTexture("marvel.jpg"); ///myInit();///我們的貼圖在這裡
    id2 = myTexture("teapot.jpg");
    id3 = myTexture("square.jpg");

    glutDisplayFunc(display);
    glutIdleFunc(display);

    glutMainLoop();///之前

}

(3)複習:模型&打光
模型輸出
#include <GL/glut.h>
#include <opencv/highgui.h> ///OpenCV High GUI讀圖 ///貼圖需要它
#include <opencv/cv.h> ///OpenCV cvCvtColor() to convert color///貼圖需要它
///程式碼是對的, 但是沒有設定好include, lib, bin
GLuint id1, id2, id3;///NOW2 ///貼圖需要它
float a=0;

#include "glm.h"///呼叫外掛 ///glm需要它
GLMmodel * pmodel=NULL;///準備指標 ///glm需要它
GLMmodel * pmodel2=NULL;///準備指標 ///glm需要它
GLMmodel * pmodel3=NULL;///準備指標 ///glm需要它
GLMmodel * pmodel4=NULL;///準備指標 ///glm需要它

void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glEnable(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, id1);///id1 for background ///貼圖需要它
    glBegin(GL_POLYGON); ///貼圖需要它
        glTexCoord2f(0, 0); glVertex3f(-1, +1, 0); ///貼圖需要它
        glTexCoord2f(0, 1); glVertex3f(-1, -1, 0); ///貼圖需要它
        glTexCoord2f(1, 1); glVertex3f(+1, -1, 0); ///貼圖需要它
        glTexCoord2f(1, 0); glVertex3f(+1, +1, 0); ///貼圖需要它
    glEnd();///貼圖需要它

    if (!pmodel) { ///glm需要它
        pmodel = glmReadOBJ("body.obj"); ///glm需要它
        if (!pmodel) exit(0); ///glm需要它
        glmUnitize(pmodel); ///glm需要它
        glmFacetNormals(pmodel); ///glm需要它
        glmVertexNormals(pmodel, 90.0); ///glm需要它
    }

    glDisable(GL_TEXTURE_2D);
    glPushMatrix();
        glRotatef(a++, 0,1,0);
        glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);
    glPopMatrix();

    glutSwapBuffers();
}
///void myInit()
GLuint myTexture(char * filename) ///貼圖需要它
{
    IplImage * img = cvLoadImage(filename); ///NOW OpenCV ///貼圖需要它
    cvCvtColor(img, img, CV_BGR2RGB);///convert color ///NOW OpenCV ///貼圖需要它

    GLuint id; ///貼圖需要它
    glEnable(GL_TEXTURE_2D); ///貼圖需要它
    glGenTextures(1, &id ); ///貼圖需要它
    glBindTexture(GL_TEXTURE_2D, id); ///貼圖需要它
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); ///貼圖需要它
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); ///貼圖需要它
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); ///貼圖需要它
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); ///貼圖需要它
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData); ///貼圖需要它
    return id;///貼圖需要它
}
const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f }; ///glm需要它
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f }; ///glm需要它
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f }; ///glm需要它
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f }; ///glm需要它
int main(int argc, char **argv)
{
    ///IplImage * img = cvLoadImage("marvel.jpg");
    ///cvShowImage("opencv", img);
    ///cvWaitKey(0);///等你按按鍵
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
    glutCreateWindow("GLUT");///之後
    ///建好GLUT視窗,可以開始準備 3D 貼圖 (要在create...MainLoop才能建貼圖)
    id1 = myTexture("marvel.jpg"); ///myInit();///我們的貼圖在這裡 ///貼圖需要它
    id2 = myTexture("teapot.jpg");
    id3 = myTexture("square.jpg");

    glutDisplayFunc(display);
    glutIdleFunc(display);

    glEnable(GL_DEPTH_TEST);    ///glm需要它

    glEnable(GL_LIGHT0);  ///glm需要它
    glEnable(GL_NORMALIZE); ///glm需要它
    glEnable(GL_COLOR_MATERIAL); ///glm需要它
    glEnable(GL_LIGHTING); ///glm需要它

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient); ///glm需要它
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse); ///glm需要它
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular); ///glm需要它
    glLightfv(GL_LIGHT0, GL_POSITION, light_position); ///glm需要它


    glutMainLoop();///之前

}

模型出錯

六到布行的部落12

20190530
(1)主題:攝影機運鏡
三種投影法可選

嘗試調整eye,center,up

利用codeblocks嘗試開啟projection

#include <GL/glut.h>///GLUT 外掛
#include "glm.h"///glm.cpp for 3D model glmReadOBJ(), glmDraw(), glmUnitized()
GLMmodel * pmodel=NULL;///指標
void drawmodel(void)
{
    if (!pmodel) {
pmodel = glmReadOBJ("data/al.obj");
if (!pmodel) exit(0);
glmUnitize(pmodel);
glmFacetNormals(pmodel);
glmVertexNormals(pmodel, 90.0);
    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);
}
void display(void)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    drawmodel();
    glutSwapBuffers();
}

int main(int argc, char** argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE);
    glutInitWindowSize(512,512);
    glutInitWindowPosition(50, 50);
    glutCreateWindow("week15");

//    glutReshapeFunc(reshape);
    glutDisplayFunc(display);

    glutMainLoop();

    return 0;
}

    eyeX=0.5*cos(angle); ///NOW3

    eyeZ=0.5*sin(angle); ///NOW3

    glutTimerFunc(33, timer, t+1);///NOW3

    glMatrixMode(GL_MODELVIEW);///NOW3

    glLoadIdentity();///NOW3

    gluLookAt( eyeX, eyeY, eyeZ,///eye ///NOW3

           0, 0, 0,///center ///NOW3

               0, 1, 0);///up    ///NOW3

    glutPostRedisplay();///NOW3

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE);

    glutInitWindowSize(512,512);

    glutInitWindowPosition(50, 50);

    glutCreateWindow("week15");

//    glutReshapeFunc(reshape);

    glutDisplayFunc(display);

    glutTimerFunc(33, timer, 0);///NOW3

    GLfloat light_pos[] = { 0.0, 0.0, 1.0, 0.0 };

    glEnable(GL_DEPTH_TEST);

glEnable(GL_LIGHTING);

    glEnable(GL_LIGHT0);

    glLightfv(GL_LIGHT0, GL_POSITION, light_pos);

    glutMainLoop();

    return 0;

}

大鼻子大眼睛

#include <GL/glut.h>///GLUT 外掛

#include "glm.h"///glm.cpp for 3D model glmReadOBJ(), glmDraw(), glmUnitized()

GLMmodel * pmodel=NULL;///指標

void drawmodel(void)

{

    if (!pmodel) {

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

if (!pmodel) exit(0);

glmUnitize(pmodel);

glmFacetNormals(pmodel);

glmVertexNormals(pmodel, 90.0);

    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

}

void display(void)

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    drawmodel();

    glutSwapBuffers();

}

#include <math.h>///for sin() cos() ///NOW3

float eyeX=2, eyeY=0, eyeZ=0; ///NOW3

void timer(int t)///NOW3

{

    glMatrixMode(GL_PROJECTION); ///NOW4

    glLoadIdentity(); ///NOW4

///glOrtho(-1, +1,  -1,+1, -10.0,10.0); ///NOW4 你可以看到 -10...+10範圍

gluPerspective(60, 1.0, 0.001, 1000);///NOW5

    float angle = (t/180.0)*3.1415926; ///NOW3

    eyeX=2*cos(angle); ///NOW3

    eyeZ=2*sin(angle); ///NOW3

    glutTimerFunc(33, timer, t+1);///NOW3

    glMatrixMode(GL_MODELVIEW);///NOW3

    glLoadIdentity();///NOW3

    gluLookAt( eyeX, eyeY, eyeZ,///eye ///NOW3

           0, 0, 0,///center ///NOW3

               0, 1, 0);///up    ///NOW3

    glutPostRedisplay();///NOW3

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE);

    glutInitWindowSize(512,512);

    glutInitWindowPosition(50, 50);

    glutCreateWindow("week15");

//    glutReshapeFunc(reshape);

    glutDisplayFunc(display);

    glutTimerFunc(33, timer, 0);///NOW3

    GLfloat light_pos[] = { 0.0, 0.0, 1.0, 0.0 };

    glEnable(GL_DEPTH_TEST);

glEnable(GL_LIGHTING);

    glEnable(GL_LIGHT0);

    glLightfv(GL_LIGHT0, GL_POSITION, light_pos);

    glutMainLoop();

    return 0;

}

大鼻子小眼睛

(2)主題:投影矩陣
(3)複習:位置移動
(4)複習:背景貼圖
(5)期末作業

六到布行的部落12

20190530
(1)主題:攝影機、運鏡
(2)投影矩陣
(3)位置移動和轉動
(4)背景貼圖
(5)期末作品

六到布行的部落11

(1)主題:計時器Timer
#include <GL/glut.h>
#include <mmsystem.h>///Now (1)
#include <stdio.h>///printf()
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glutSolidTeapot( 0.3 );
    glutSwapBuffers();
}
void timer(int t)///NOW timer!!!!
{
    glutTimerFunc(1000, timer, t+1 );///NOW timer!!!! 起床要播下一個鬧鐘
    printf("timer(t) 的 t是 %d\n", t);///順便印一下現在的t是多少
    PlaySoundA("fart.wav", NULL, SND_ASYNC);///Now (2) ///NOW timer!!!!
}
int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(500,500);///變大了
    glutCreateWindow("week 14 timer");

    glutDisplayFunc(display);
    glutTimerFunc(3000, timer, 0);///NOW timer!!!!

    glutMainLoop();
}

(2)主題:內插公式
#include <GL/glut.h>
#include <mmsystem.h>///Now (1)
float angle=0;
float nowX=0;///NOW2
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        ///glRotatef(angle, 0,0,1);
        glTranslatef(nowX, 0, 0);///NOW2
        glutSolidTeapot( 0.3 );
    glPopMatrix();
    glutSwapBuffers();
}
void timer(int t)///NOW timer!!!!
{
    /// 1000 ms = 1 sec,  30 ms = 1/33 sec , 33 fps
    glutTimerFunc(30, timer, t+1 );///NOW timer!!!! 起床要播下一個鬧鐘
    float alpha = (t%33) / 33.0;///NOW2 alpha 內插
    nowX = alpha* 1 + (1-alpha)* -1 ;///NOW2

    angle += 1;
    glutPostRedisplay();///系統重繪畫面
}
int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(500,500);///變大了
    glutCreateWindow("week 14 timer");

    glutDisplayFunc(display);
    glutTimerFunc(1000, timer, 0);///NOW timer!!!!

    glutMainLoop();

}

(3)主題:動畫

(4)期末作品

六到布行的部落 10

20190516

(1)主題:檔案

講解讀入寫入

讀入一個檔案寫Hello World

讀入一個檔案寫關節資料

(2)主題:關節、擺動作

創造出一個關節

創造出四個關節且按不同數字鍵有不同效果

   if(key=='r'){

        if(fin==NULL) fin = fopen("motion.txt", "r");///NOW_FILE_READ (2)

        ///scanf("%d", &n);

        for(int i=0;i<20; i++){///NOW_FILE_READ

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

            printf(" %.2f ", angle[i]);///順便印出來看數字對不對

        }

    }

    glutPostRedisplay();///NOW_FILE_READ 和 display()很像

}

(3)主題:複習

六到布行的部落 9

20190509week12
(1)主題:鍵盤
    if(key=='1') PlaySoundA("C:\\Users\\user\\Desktop\\music\\do.wav",NULL,SND_ASYNC);
    if(key=='2') PlaySoundA("C:\\Users\\user\\Desktop\\music\\re.wav",NULL,SND_ASYNC);
    if(key=='3') PlaySoundA("C:\\Users\\user\\Desktop\\music\\mi.wav",NULL,SND_ASYNC);
    if(key=='4') PlaySoundA("C:\\Users\\user\\Desktop\\music\\fa.wav",NULL,SND_ASYNC);
    if(key=='5') PlaySoundA("C:\\Users\\user\\Desktop\\music\\so.wav",NULL,SND_ASYNC);
 (藉由鍵盤輸出導致聲音出現)

行142：#include <mmsystem.h> (輸入函式)

行146：PlaySoundA("C:\\Users\\user\\Downloads\\m4a1-1.wav",NULL,SND_SYNC);

(開場播放檔案的聲音)

(2)主題:聲音、音樂WAV、MP3
1.下載好想要使用的音樂檔(wav)
2.打開codeblcoks並打入以下程式碼：
#include <windows.h>
#include <mmsystem.h>
int main()
{

    PlaySoundA("C:\\Users\\user\\Downloads\\m4a1-1.wav",NULL,SND_SYNC);
}

3.按下執行即可撥放音樂

(3)複習:T-R-T骨架
(4)作業:能動的機器人

六到布行的部落8

20190502

小考:T-R-T轉動

glPushMatrix();

glTranslatef(-0.5,-0.6,0);

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

glTranslatef(-0.8,0.9,0);

drawHand();

glPopMatrix();

主題:階層轉動骨架

一個茶壺轉

#include <GL/glut.h>float angle=0;void display(){    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3f(255,255,255);///白色    glutSolidTeapot( 0.3 );///身體    ///右邊的手臂    glPushMatrix();        glTranslatef(0.2, 0,0 );///(3)往右移動, 掛在身體的右肩        glRotatef(angle, 0,0,1);///(2)旋轉        glTranslatef(0.28, 0,0);///(1)往右推,把茶壼的柄,放到中心,變 轉動軸
        glColor3f(255,0,0);///紅色        glutSolidTeapot( 0.2 );///手臂    glPopMatrix();
    glutSwapBuffers();    angle++;}int main(int argc, char**argv){    glutInit(&argc, argv);    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);    glutCreateWindow("week11 TRT");    glutIdleFunc(display);///Now!!!!    glutDisplayFunc(display);
    glutMainLoop();}

多個茶壺轉

#include <GL/glut.h>float angle=0;void display(){    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3f(255,255,255);///白色    glutSolidTeapot( 0.3 );///身體
    glPushMatrix();///右邊的手臂        glTranslatef(0.2, 0,0 );///(3)往右移動, 掛在身體的右肩        glRotatef(angle, 0,0,1);///(2)旋轉        glTranslatef(0.28, 0,0);///(1)往右推,把茶壼的柄,放到中心,變 轉動軸
        glColor3f(255,0,0);///紅色        glutSolidTeapot( 0.2 );///上手臂
        glPushMatrix();///右下手臂            glTranslatef(0.2, 0,0 );///(3)往右移動, 掛在身體的右肘            glRotatef(angle, 0,0,1);///(2)旋轉            glTranslatef(0.28, 0,0);///(1)往右推,把茶壼的柄,放到中心,變 轉動軸
            glColor3f(255,0,0);///紅色            glutSolidTeapot( 0.2 );///上手臂        glPopMatrix();    glPopMatrix();

    glPushMatrix();///左邊的手臂        glTranslatef(-0.2, 0,0 );///(3)往左移動, 掛在身體的左肩        glRotatef(angle, 0,0,1);///(2)旋轉        glTranslatef(-0.28, 0,0);///(1)往左推,把茶壼的柄,放到中心,變 轉動軸
        glColor3f(255,0,0);///紅色        glutSolidTeapot( 0.2 );///上手臂
        glPushMatrix();///左下手臂            glTranslatef(-0.2, 0,0 );///(3)往左移動, 掛在身體的左肘            glRotatef(angle, 0,0,1);///(2)旋轉            glTranslatef(-0.28, 0,0);///(1)往左推,把茶壼的柄,放到中心,變 轉動軸
            glColor3f(255,0,0);///紅色            glutSolidTeapot( 0.2 );///上手臂        glPopMatrix();    glPopMatrix();
    glutSwapBuffers();    angle++;}int main(int argc, char**argv){    glutInit(&argc, argv);    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);    glutCreateWindow("week11 TRT");    glutIdleFunc(display);///Now!!!!    glutDisplayFunc(display);
    glutMainLoop();}

主題:鍵盤按鍵

六到布行的部落7

2019 04 25
期中考:OpenGL必備十函式

複習:移動  旋轉  縮放
          觀察自轉和公轉差別

主題:T-R-T旋轉(改變旋轉軸)ˇ
#include <GL/glut.h>
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glTranslatef(0,0.5,0);
        glutSolidTeapot( 0.3 );
    glPopMatrix();
    glPushMatrix();

    glPopMatrix();
    glPushMatrix();
        glTranslatef(0.5,0.625,0);
        glRotatef(angle,0,0,1);
        glTranslatef(0.6,0,0);

        glRotatef(-90,0,1,0);
        glutSolidCone( 0.2,0.6,30,30 );
    glPopMatrix();
    glutSwapBuffers();

}
void motion(int x,int y)
{
    angle=x;
    display();

}
int main(int argc, char**argv)
{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("06161110_Week10  TRT!!");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMainLoop();



}

主題:glut