2019年5月30日 星期四

Week15_Summer

 今日目標：

1、主題：攝影機、運鏡
2、主題：投影、矩陣
3、主題：位置移動 v.s. 轉動

4、主題：背景貼圖
5、期末作品



下載"win32"、"data"、"glut32.dll" 、"source"四個檔案並解壓縮放入對應資料夾中




下載MinGW的 "Download freeglut 3.0.0 for MinGW"



 03 至 windows / Projection.exe 試試看功能




 04 gluLoolATt 函式運鏡手法
eye 眼睛看主角位置
center 主角放的位置
up 拍攝的十指的位置



 05 建立一個 CodeBlocks 新專案 GLUT
把 Source 資料夾中的 glm.c、glm.h、projection.c 複製到自己專案的資料夾中
複製 projection.c 的程式到 main.cpp 中
glm.c 改名 glm.cpp 並把它加到自己專案中
windows / data 加入 freeglut / bin 資料夾下



 06 重新建造一個 model 和 camara


 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);

    glutMainLoop();

    return 0;
}




 07 模型打光(白光)


 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;
}




 08 旋轉運鏡、角度調整


 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;
}




 09 調整照射範圍


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
{

    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;
}




 10  垂直投影 v.s. 透視投影
glOrtho(-1, +1,  -1,+1, -10.0,10.0);   v.s.   gluPerspective(60, 1.0, 0.001, 1000);

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=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;
}
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