電腦圖學
(1)主題:攝影機，運鏡
準備動作:
TODO:首先先到http://www.cmlab.csie.ntu.edu.tw/~jsyeh/3dcg10/ 這個網站
下載:windows.zip解壓縮並下載\windows\Projection.exe
data.zip 解壓縮並下載\windows\data\圖檔
glut32.dll 下載\windows\glut32.dll
eye-眼睛去看主角(移動鏡頭)
center-定在畫面中心
up -拍攝過去的角度(不管你轉向哪邊就往哪個方向)
再回到http://www.cmlab.csie.ntu.edu.tw/~jsyeh/3dcg10/ 這個網站下載source檔案
找到glm.c glm.h projection.c把這些放到week15這個資料夾裡
同時把glm.c改成glm.cpp
然後弄完步驟後再把windows裡的data複製到freeglut裡的bin裡(這樣才能掃到模型)
接下來再把projection.c用notepad++來打開複製到codeblocks裡的main.cpp
接下來再按week15 以add flies的方式把glm.cpp加進來，便可呈現出下面的畫面。
然後用codeblocks的方式讓人的模型可以利用寫程式顯示出來
程式碼如下:
#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;
}
打光模型程式碼
#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);
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;
}
轉動模型程式碼
#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");
// 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;
}
#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
{
glMatrixMode(GL_PROJECTION); ///NOW4
glLoadIdentity(); ///NOW4
glOrtho(-1, +1, -1,+1, -10,+10); ///NOW4 你可以看到 -10...+10範圍
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");
// 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;
}
#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;
}
(2)主題:投影、矩陣
(3)複習:位置移動vs.轉動
(4)複習:背景貼圖
(5)期末作品
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