2019電腦圖學: 06160451

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2019年6月8日星期六

電腦圖學

(1)作業Q&A

(2)複習：貼圖

程式碼

#include <GL/glut.h>

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

///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");

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

}

#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：打光

#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;

void display()

{

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

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

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) ///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

}

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("texture.jpg");
id3 = myTexture("square.jpg");
檔名要跟存的一樣
glutDisplayFunc

glutDisplayFunc(display);

glutIdleFunc(display);

glutMainLoop();///之前

}

(4)複習：模型

http://www.cmlab.csie.ntu.edu.tw/~jsyeh/3dcg10/載data source glut32.dll

source的glm.c glm.h projection拉到codeblocks的檔>>改glm.c變成glm.cpp>>按檔案右鍵add file 加入glm.cpp

#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

glNormal3f(0,1,0);

glTexCoord2f(0, 0); glVertex3f(-1, +1, -1); ///貼圖需要它

glTexCoord2f(0, 1); glVertex3f(-1, -1, -1); ///貼圖需要它

glTexCoord2f(1, 1); glVertex3f(+1, -1, -1); ///貼圖需要它

glTexCoord2f(1, 0); glVertex3f(+1, +1, -1); ///貼圖需要它

glEnd();///貼圖需要它

if (!pmodel) { ///glm需要它

pmodel = glmReadOBJ("data/flowers.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);

glScalef(0.2, 0.2, 0.2);

glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

glPopMatrix();

if (!pmodel2) { ///glm需要它

pmodel2 = glmReadOBJ("data/soccerball.obj"); ///glm需要它

if (!pmodel2) exit(0); ///glm需要它

///glmUnitize(pmodel2); ///glm需要它

glmFacetNormals(pmodel2); ///glm需要它

glmVertexNormals(pmodel2, 90.0); ///glm需要它

}

glDisable(GL_TEXTURE_2D);

glPushMatrix();

glRotatef(a, 0,1,0);

glScalef(0.2, 0.2, 0.2);

glmDraw(pmodel2, 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("texture.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

glMatrixMode(GL_PROJECTION); ///投影矩陣相關戴好我們的正確度數的眼睛

glLoadIdentity(); ///投影矩陣相關戴好我們的正確度數的眼睛

glOrtho(-1,+1, -1,+1, -100,+100); ///投影矩陣相關戴好我們的正確度數的眼睛

glMatrixMode(GL_MODELVIEW); ///投影矩陣相關切換回我們正確的矩陣

glutMainLoop();///之前

}

2019年5月30日星期四

#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;
}

3.複習:位置移動VS轉動

#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=0.5, eyeY=0, eyeZ=0; ///NOW3
void timer(int t)///NOW3
{
float angle = (t/180.0)*3.1415926; ///NOW3
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 06160531");
// 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;
}
4.複習:背景貼圖
5.期末作品

2019年5月23日星期四

真那一的筆記

(1)主題:計時器Timer
(2)主題:內插公式
(3) 主題:動畫
(4)期末作品

#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("Birds.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();
}

#include <GL/glut.h>

#include <mmsystem.h>///Now (1)

float angle=0;

void display()

{

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

glRotatef(angle, 0,0,1);

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

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(3000, timer, 0);///NOW timer!!!!

glutMainLoop();

}

#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();

}

2019年5月16日星期四

電腦圖學

(1)主題:檔案

#include <stdio.h>

FILE * fout=NULL;///(1)宣告一個檔案指標

int main()

{///檔案寫檔
fout = fopen("filename.txt","w+");///(2)我們要開檔案

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

fprintf(fout,"Hello World\n");///(3)印出來到檔案

}

(2)主題:關節.擺動作

#include <stdio.h>

FILE * fout2=NULL;///寫另一個檔案

FILE * fin2=NULL;///讀另一個檔案

float angle[20];///有20個關節的角度

int main()

{

fout2=fopen("motion.txt","w+");///另一個有關節膽案

for(int i=0;i<20;i++)

{

fprintf(fout2," %.2f ", angle[20]);///另一個有關節的角度

}

(3)主題:複習

#include <GL/glut.h>

float angle[20];///NOW2

void display()

{

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

glColor3f(1, 1, 1);///white

glutSolidTeapot( 0.3 );///body

glPushMatrix();

glTranslatef(0.2, 0, 0);///NOW2 (3)掛上去

glRotatef(angle[1], 0,0,1);///NOW2 ///(2)旋轉

glTranslatef(0.15, 0, 0);///NOW2 (1)旋轉中心

glColor3f(1, 0, 0);///red

glutSolidTeapot( 0.2 );///right arm

glPopMatrix();

glutSwapBuffers();

}

int oldX=0;///NOW2

void mouse(int button, int state, int x, int y)///NOW2

{///NOW2

oldX = x;///NOW2

}

void motion(int x, int y)///NOW2

{///NOW2

angle[1] += x-oldX;///NOW2

oldX = x;///NOW2

display();///NOW2

}

int main(int argc, char**argv)

{

glutInit(&argc, argv);

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

///glutInitWindowSize(600,600);///可以開大一點的window

glutCreateWindow("Week 13 angle motion file");

glutMouseFunc(mouse);///NOW2

glutMotionFunc(motion);///NOW2

glutDisplayFunc(display);

glutMainLoop();

}

單個茶壺進行旋轉:

(4)作業:機器人擺動作

#include <GL/glut.h>

float angle[20];///NOW2

int angleID=1;///NOW3

void display()

{

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

glColor3f(1, 1, 1);///white

glutSolidTeapot( 0.3 );///body

glPushMatrix();///右邊

glTranslatef(0.2, 0, 0);///NOW2 (3)掛上去

glRotatef(angle[1], 0,0,1);///NOW2 ///(2)旋轉

glTranslatef(0.15, 0, 0);///NOW2 (1)旋轉中心

glColor3f(1, 0, 0);///red

glutSolidTeapot( 0.2 );///right arm

glPushMatrix();

glTranslatef(0.2, 0, 0);///NOW2 (3)掛上去

glRotatef(angle[2], 0,0,1);///NOW2 ///(2)旋轉

glTranslatef(0.15, 0, 0);///NOW2 (1)旋轉中心

glColor3f(1, 0, 0);///red

glutSolidTeapot( 0.2 );///right lower arm

glPopMatrix();

glPushMatrix();///左邊

glTranslatef(-0.2, 0, 0);///NOW2 (3)掛上去

glRotatef(angle[3], 0,0,1);///NOW2 ///(2)旋轉

glTranslatef(-0.15, 0, 0);///NOW2 (1)旋轉中心

glColor3f(1, 0, 0);///red

glutSolidTeapot( 0.2 );///right arm

glPushMatrix();

glTranslatef(-0.2, 0, 0);///NOW2 (3)掛上去

glRotatef(angle[4], 0,0,1);///NOW2 ///(2)旋轉

glTranslatef(-0.15, 0, 0);///NOW2 (1)旋轉中心

glColor3f(1, 0, 0);///red

glutSolidTeapot( 0.2 );///right lower arm

glPopMatrix();

glutSwapBuffers();

}

int oldX=0;///NOW2

void mouse(int button, int state, int x, int y)///NOW2

{///NOW2

oldX = x;///NOW2

}

#include <stdio.h>///NOW3

void motion(int x, int y)///NOW2

{///NOW2

angle[angleID] += x-oldX;///NOW3

oldX = x;///NOW2

for(int i=0;i<20;i++){///NOW3

printf(" %.2f ", angle[i]);///NOW3

}

printf("\n");///NOW3

display();///NOW2

}

void keyboard(unsigned char key, int x, int y)///NOW3

{///NOW3

if(key=='1') angleID=1;///NOW3

if(key=='2') angleID=2;///NOW3

if(key=='3') angleID=3;///NOW3

if(key=='4') angleID=4;///NOW3

}

int main(int argc, char**argv)

{

glutInit(&argc, argv);

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

///glutInitWindowSize(600,600);///可以開大一點的window

glutCreateWindow("Week 13 angle motion file");

glutKeyboardFunc(keyboard);///NOW3

glutMouseFunc(mouse);///NOW2

glutMotionFunc(motion);///NOW2

glutDisplayFunc(display);

glutMainLoop();

}

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