➤ Week15_下載上課資料
1 - 從 https://jsyeh.org/3dcg10/ 網頁下載 data / win32
3 - 開啟Projection.exe
up 可旋轉攝影機
➤ Week15-1_gluPerspective
1 - 下載git-2.30.0.2-64-bit.exe，將2023graphicsa叫到桌面
cd desktop 進入桌面
git clone https://github.com/happylisaya/2023graphicsa把雲端複製下來
2023graphicsa
start .
2 - 開啟CodeBlocks ，新增OpenGL專案，File ➝ New ➝ Project
3 - 選取GLUT Project ➝ Go ➝ Next
4 - 點選三個點，點選目錄在Desktop\2023graphicsa\，加上專案名字
4 - 點選三個點，點選目錄在Desktop\2023graphicsa\，加上專案名字
week15-1_gluPerspective，Next ➝ Desktop\2023graphicsa\Final_Project\freeglut ➝ Finish
5 - 將程式碼改為 glOrtho(-ar*3, ar*3, -1*3, 1*3, -100, +100);
6 - 將程式碼改為 gluPerspective(60, ar, 0.01, 1000);
➤Week15-2_gluLookAt
1 - 新增OpenGL專案，File ➝ New ➝ Project
2 - 選取GLUT Project ➝ Go ➝ Next
3 - 點選三個點，點選目錄在Desktop\2023graphicsa\，加上專案名字
3 - 點選三個點，點選目錄在Desktop\2023graphicsa\，加上專案名字
week15-2_gluLookAt，Next ➝ Desktop\2023graphicsa\Final_Project\freeglut ➝ Finish
4 - 將程式碼勸不刪除，並輸入程式碼
#include <GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glutSolidTeapot( 0.3 );
glutSwapBuffers();
}
void reshape(int w, int h)
{
glViewport(0, 0, w, h);
float ar = w / (float) h;
glutPostRedisplay();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week15");
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMainLoop();
}
5 - 將程式碼改為
#include <GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glutSolidTeapot( 0.3 );
glutSwapBuffers();
}
void reshape(int w, int h)
{
glViewport(0, 0, w, h);
float ar = w / (float) h;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, ar, 0.01, 1000);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0, 0, 1, 0, 0, 0, 0, 1, 0);
glutPostRedisplay();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week15");
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMainLoop();
}
6 - 將程式碼改為
#include <GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glutSolidTeapot( 0.3 );
glutSwapBuffers();
}
void reshape(int w, int h)
{
glViewport(0, 0, w, h);
float ar = w / (float) h;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, ar, 0.01, 1000);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0, 0, 1, 0, 0, 0, 0, 1, 0);
glutPostRedisplay();
}
float eyeX = 0, eyeY = 0;
void motion(int x, int y)
{
eyeX = (x-150.0)/150.0;
eyeY = (150.0-y)/150.0;
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(eyeX, eyeY, 1, 0, 0, 0, 0, 1, 0);
glutPostRedisplay();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week15");
glutMotionFunc(motion);
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMainLoop();
}
➤ Final_Project
1 - 將程式碼改為
#include <stdio.h>
#include <GL/glut.h>
#include "glm.h"
GLMmodel * head = NULL;
GLMmodel * body = NULL;
GLMmodel * uparmR = NULL;
GLMmodel * lowarmR = NULL;
int show[4] = {1, 1, 1, 1};
int ID = 3;
void keyboard(unsigned char key, int x, int y) {
if(key=='0') ID = 0;
if(key=='1') ID = 1;
if(key=='2') ID = 2;
if(key=='3') ID = 3;
glutPostRedisplay();
}
FILE * fout = NULL;
FILE * fin = NULL;
float teapotX=0, teapotY=0;
//float angle=0, angle2=0, angle3=0;
float angle[20] = {};
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glScalef(0.2, 0.2, 0.2);
if(body==NULL){
head = glmReadOBJ("model/head.obj");
body = glmReadOBJ("model/body.obj");
uparmR = glmReadOBJ("model/uparmR.obj");
lowarmR = glmReadOBJ("model/lowarmR.obj");
}
if(ID==0) glColor3f(1, 0, 0);
else glColor3f(1,1,1);
if(show[0]) glmDraw(head, GLM_MATERIAL);
if(ID==1) glColor3f(1, 0, 0);
else glColor3f(1,1,1);
if(show[1]) glmDraw(body, GLM_MATERIAL);
glPushMatrix();
glTranslatef(-1.200000, +0.453333, 0);
glRotatef(angle[2], 0, 0, 1);
glTranslatef(1.200000, -0.453333, 0);
if(ID==2) glColor3f(1,0,0);
else glColor3f(1,1,1);
if(show[2]) glmDraw(uparmR, GLM_MATERIAL);
glPushMatrix();
glTranslatef(-1.959999, +0.113333, 0);
glRotatef(angle[3], 0, 0, 1);
glTranslatef(1.959999, -0.113333, 0);
if(ID==3) glColor3f(1,0,0);
else glColor3f(1,1,1);
if(show[3]) glmDraw(lowarmR, GLM_MATERIAL);
glPopMatrix();
glPopMatrix();
glPopMatrix();
glColor3f(0, 1, 0);
glutSolidTeapot( 0.02 );
glutSwapBuffers();
}
int oldX = 0, oldY = 0;
void motion(int x, int y){
teapotX += (x - oldX)/150.0;
teapotY -= (y - oldY)/150.0;
angle[ID] += ( x-oldX );
oldX = x;
oldY = y;
//angle = x;
printf("glTranslatef(%f, %f, 0);\n", teapotX, teapotY);
glutPostRedisplay();
}
void mouse(int button, int state, int x, int y)
{
if(state==GLUT_DOWN){
oldX = x;
oldY = y;
///angle = x;
}
display();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week15");
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);
glutMainLoop();
}
#include <stdio.h>
#include <GL/glut.h>
#include "glm.h"
GLMmodel * head = NULL;
GLMmodel * body = NULL;
GLMmodel * uparmR = NULL;
GLMmodel * lowarmR = NULL;
int show[4] = {1, 1, 1, 1};
int ID = 3;
FILE * fout = NULL;
FILE * fin = NULL;
float teapotX=0, teapotY=0;
float angle[20] = {};
void keyboard(unsigned char key, int x, int y) {
if(key=='0') ID = 0;
if(key=='1') ID = 1;
if(key=='2') ID = 2;
if(key=='3') ID = 3;
if(key=='s'){
if(fout==NULL) fout = fopen("motion.txt", "w");
for(int i=0; i<20; i++){
fprintf(fout, "%.2f ", angle[i] );
}
fprintf(fout, "\n");
}else if(key=='r'){
if(fin==NULL) fin = fopen("motion.txt", "r");
for(int i=0; i<20; i++){
fscanf(fin, "%f", &angle[i] );
}
glutPostRedisplay();
}
glutPostRedisplay();
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glScalef(0.2, 0.2, 0.2);
if(body==NULL){
head = glmReadOBJ("model/head.obj");
body = glmReadOBJ("model/body.obj");
uparmR = glmReadOBJ("model/uparmR.obj");
lowarmR = glmReadOBJ("model/lowarmR.obj");
}
if(ID==0) glColor3f(1, 0, 0);
else glColor3f(1,1,1);
if(show[0]) glmDraw(head, GLM_MATERIAL);
if(ID==1) glColor3f(1, 0, 0);
else glColor3f(1,1,1);
if(show[1]) glmDraw(body, GLM_MATERIAL);
glPushMatrix();
glTranslatef(-1.200000, +0.453333, 0);
glRotatef(angle[2], 0, 0, 1);
glTranslatef(1.200000, -0.453333, 0);
if(ID==2) glColor3f(1,0,0);
else glColor3f(1,1,1);
if(show[2]) glmDraw(uparmR, GLM_MATERIAL);
glPushMatrix();
glTranslatef(-1.959999, +0.113333, 0);
glRotatef(angle[3], 0, 0, 1);
glTranslatef(1.959999, -0.113333, 0);
if(ID==3) glColor3f(1,0,0);
else glColor3f(1,1,1);
if(show[3]) glmDraw(lowarmR, GLM_MATERIAL);
glPopMatrix();
glPopMatrix();
glPopMatrix();
glColor3f(0, 1, 0);
glutSolidTeapot( 0.02 );
glutSwapBuffers();
}
int oldX = 0, oldY = 0;
void motion(int x, int y){
teapotX += (x - oldX)/150.0;
teapotY -= (y - oldY)/150.0;
angle[ID] += ( x-oldX );
oldX = x;
oldY = y;
//angle = x;
printf("glTranslatef(%f, %f, 0);\n", teapotX, teapotY);
glutPostRedisplay();
}
void mouse(int button, int state, int x, int y)
{
if(state==GLUT_DOWN){
oldX = x;
oldY = y;
///angle = x;
}
display();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week15");
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);
glutMainLoop();
}
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