今日課程內容
1.使用老師提供的網站" http://www.cmlab.csie.ntu.edu.tw/~jsyeh/3dcg10/ "
下載"windows.zip","data","source","glut32.dll"
1.先將windows解壓縮後，將glut32.dll以及data解壓縮的檔案放入window解壓縮完的資料夾中，再執行"Projection.exe"
2.點選右鍵開啟
2.開啟codeblock-glut
1.透過codeblock開啟"Projection.exe"
先將"glm.h","glm.c","projection.c"放入codeblock資料夾中
glm.c更改名字為glm.cpp
將data的檔案'放入freeglut\bin裡
開啟
3.更改程式碼使codeblock開啟角色人物
#include <GL/glut.h>
#include "glm.h" ///for glmReadOBJ(), glmDraw(), glmUnitized()....
GLMmodel * pmodel=NULL;///NOW
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_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(500,500);
glutCreateWindow("week15");
glutDisplayFunc(display);
GLfloat light_pos[] = { 0.0, 0.0, -1.0, 0.0 };///NOW2 打光的位置
glEnable(GL_DEPTH_TEST);///NOW2 有立體的功能
glEnable(GL_LIGHT0); ///NOW2 打光後變立體的彩色的
glEnable(GL_LIGHTING); ///NOW2 打光後變立體的彩色的
glLightfv(GL_LIGHT0, GL_POSITION, light_pos);///NOW2 打光的位置
glutMainLoop();
}
4.更改程式碼讓視角能圍繞腳色旋轉
1.角色會有破圖
#include <GL/glut.h>
#include "glm.h" ///for glmReadOBJ(), glmDraw(), glmUnitized()....
GLMmodel * pmodel=NULL;///NOW
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>
float eyeX=1, eyeY=0, eyeZ=0;
void timer(int t)///NOW3
{
glutTimerFunc(33, timer, t+1);///NOW3
float angle=t/180.0*3.1415926;///NOW3 算出一個角度
eyeX=cos(angle); eyeZ=sin(angle);///NOW3
glMatrixMode(GL_MODELVIEW);///NOW3
glLoadIdentity();///NOW3
gluLookAt(eyeX, eyeY, eyeZ, ///NOW3 LookAt的 eye
0.0, 0.8, 0.0, ///NOW3 LookAt的 center
0, 1, 0);///NOW3 LookAt的 up
glutPostRedisplay();///NOW3 Re-display
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(500,500);
glutCreateWindow("week15");
glutDisplayFunc(display);
glutTimerFunc(33, timer, 0);///NOW3
GLfloat light_pos[] = { 0.0, 0.0, -1.0, 0.0 };///NOW2 打光的位置
glEnable(GL_DEPTH_TEST);///NOW2 有立體的功能
glEnable(GL_LIGHT0); ///NOW2 打光後變立體的彩色的
glEnable(GL_LIGHTING); ///NOW2 打光後變立體的彩色的
glLightfv(GL_LIGHT0, GL_POSITION, light_pos);///NOW2 打光的位置
glutMainLoop();
}
2.更改程式碼使角色正確顯示旋轉
#include <GL/glut.h>
#include "glm.h" ///for glmReadOBJ(), glmDraw(), glmUnitized()....
GLMmodel * pmodel=NULL;///NOW
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>
float eyeX=1, eyeY=0, eyeZ=0;
void timer(int t)///NOW3
{
glutTimerFunc(33, timer, t+1);///NOW3
float angle=t/180.0*3.1415926;///NOW3 算出一個角度
eyeX=cos(angle); eyeZ=sin(angle);///NOW3
glMatrixMode(GL_PROJECTION);///NOW4
glLoadIdentity();///NOW4
glOrtho(-1,+1, -1,+1, -10,+10);///NOW4 可以看到範圍比較大的投影法
glMatrixMode(GL_MODELVIEW);///NOW3
glLoadIdentity();///NOW3
gluLookAt(eyeX, eyeY, eyeZ, ///NOW3 LookAt的 eye
0.0, 0.6, 0.0, ///NOW3 LookAt的 center
0, 1, 0);///NOW3 LookAt的 up
glutPostRedisplay();///NOW3 Re-display
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(500,500);
glutCreateWindow("week15");
glutDisplayFunc(display);
glutTimerFunc(33, timer, 0);///NOW3
GLfloat light_pos[] = { 0.0, 0.0, 1.0, 0.0 };///NOW2 打光的位置
glEnable(GL_DEPTH_TEST);///NOW2 有立體的功能
glEnable(GL_LIGHT0); ///NOW2 打光後變立體的彩色的
glEnable(GL_LIGHTING); ///NOW2 打光後變立體的彩色的
glLightfv(GL_LIGHT0, GL_POSITION, light_pos);///NOW2 打光的位置
glutMainLoop();
}
3.更改程式碼使用另一種可以看到大範圍的投影法
#include <GL/glut.h>
#include "glm.h" ///for glmReadOBJ(), glmDraw(), glmUnitized()....
GLMmodel * pmodel=NULL;///NOW
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>
float eyeX=1, eyeY=0, eyeZ=0;
void timer(int t)///NOW3
{
glutTimerFunc(33, timer, t+1);///NOW3
float angle=t/180.0*3.1415926;///NOW3 算出一個角度
eyeX=cos(angle); eyeZ=sin(angle);///NOW3
glMatrixMode(GL_PROJECTION);///NOW4
glLoadIdentity();///NOW4
gluPerspective(60, 1, 0.001, 1000);///NOW5
///glOrtho(-1,+1, -1,+1, -10,+10);///NOW4 可以看到範圍比較大的投影法
glMatrixMode(GL_MODELVIEW);///NOW3
glLoadIdentity();///NOW3
gluLookAt(eyeX, eyeY, eyeZ, ///NOW3 LookAt的 eye
0.0, 0.6, 0.0, ///NOW3 LookAt的 center
0, 1, 0);///NOW3 LookAt的 up
glutPostRedisplay();///NOW3 Re-display
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(500,500);
glutCreateWindow("week15");
glutDisplayFunc(display);
glutTimerFunc(33, timer, 0);///NOW3
GLfloat light_pos[] = { 0.0, 0.0, 1.0, 0.0 };///NOW2 打光的位置
glEnable(GL_DEPTH_TEST);///NOW2 有立體的功能
glEnable(GL_LIGHT0); ///NOW2 打光後變立體的彩色的
glEnable(GL_LIGHTING); ///NOW2 打光後變立體的彩色的
glLightfv(GL_LIGHT0, GL_POSITION, light_pos);///NOW2 打光的位置
glutMainLoop();
}
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