2017電腦圖學A: Week11_嗯對,這是賴小沫的

1_3D Exploration 將模型轉成函式

開啟網頁搜尋 3D Exploration (3D的檔案總管)

下載1.81免費試用版(4.5MB)安裝

開啟安裝完的執行檔3D Exploration

從 jsyeh.org/3dcg10 下載data.zip (有3D模型解壓縮在桌面\data)

用3D Exploration去看data中的模型 ex.soccerball, ai

匯出(save as...)OpenGL程式檔案

CPP(OpenGL)程式 soccerball.cpp
註：一定要記得修改儲存類型

Export Dialog裡SampleAPP(才會有main()函式)

用Notepad++觀察

新增一個OpenGL專案

偷天換日：Remove移除main.c，Add新增soccerball.cpp

將main.c移除

把剛才透過3D Exploration新增的檔案soccerball.cpp複製到資料夾中

新增soccerball.cpp到專案中

按下F9(Build&Run)後，會發現有兩行錯誤，只要刪除就可以成功執行

(LPLOGPALETTE) lpPalette = (LPLOGPALETTE)HeapAlloc (hHeap, 0,

sizeof (LOGPALETTE) + (nColors * sizeof (PALETTEENTRY)));

//因為程式碼內容太過久遠，故無法讀取，所以會發生錯誤

只要刪除即可

再次按下F9(Build&Run)，執行結果如下：

2_3D Exploration來拆模型

使用3D Expioration開啟dolphins.obj，調整成僅顯示一隻

匯出(save as...)obj檔

要設定為Visible objects only，否則會將其他未顯示的模型也會一起匯出

確認有無勾選，如果沒有錯誤按下OK即可匯出檔案

第二隻海豚和第三隻海豚也是用一樣的方法匯出

匯出後會產生各自的obj檔及mtl檔

將剛才的檔案放進myGLMsample資料夾中的data資料夾
桌面上記得要有freeglut

開啟專案，並修改程式碼來讀取dolphins1.obj模型

#include <stdlib.h>
#include <GL/glut.h>
#include "glm.h"
GLMmodel* pmodel = NULL;
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        angle++;
        glRotatef(angle, 0,1,0);

        if (!pmodel) {
        pmodel = glmReadOBJ("data/dolphins1.obj"); //第一隻海豚
        if (!pmodel) exit(0);
        glmUnitize(pmodel);
        glmFacetNormals(pmodel);
        glmVertexNormals(pmodel, 90.0);
        }
        glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

    glPopMatrix();
    glutSwapBuffers();
}

const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };
const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };

#include <mmsystem.h> //(1)Multimedia system
void keyboard(unsigned char key,int x,int y)
{   //(5)Add keyboard for Do/Re/Mi/Fa/So
    if(key=='1') PlaySound("Do.wav",NULL,SND_ASYNC);
    if(key=='2') PlaySound("Re.wav",NULL,SND_ASYNC);
    if(key=='3') PlaySound("Mi.wav",NULL,SND_ASYNC);
    if(key=='4') PlaySound("Fa.wav",NULL,SND_ASYNC);
    if(key=='5') PlaySound("So.wav",NULL,SND_ASYNC);
}

void mouse(int button,int state,int x,int y)
{   //(2)mouse function, use PlaySound
    PlaySound("C:\\Users\\user\\Desktop\\myGLMsample\\data\\Shot.wav",NULL,SND_ASYNC);
    //(3)PlaySound的路徑要記得用\\或/
}

int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH | GLUT_RGB);
    glutCreateWindow("Yes, 3D Model Here");
    glutKeyboardFunc(keyboard);
    glutMouseFunc(mouse);
    glutDisplayFunc(display);
    glutIdleFunc(display);
    glClearColor(1,1,1,1);

    //glEnable(GL_CULL_FACE);
    //glCullFace(GL_BACK);
    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);
    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);
    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();
}

按下F9執行，即可看到dolphins1的模型

繼續新增第二個模型程式碼

...
GLMmodel* pmodel2 = NULL;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        angle++;
        glRotatef(angle, 0,1,0);
        if (!pmodel) {
        pmodel = glmReadOBJ("data/dolphins1.obj"); //第一隻海豚
        if (!pmodel) exit(0);
        glmUnitize(pmodel);
        glmFacetNormals(pmodel);
        glmVertexNormals(pmodel, 90.0);
        }
        glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

        if (!pmodel2) {
        pmodel2 = glmReadOBJ("data/dolphins2.obj"); //第二隻海豚
        if (!pmodel2) exit(0);
        glmUnitize(pmodel2);
        glmFacetNormals(pmodel2);
        glmVertexNormals(pmodel2, 90.0);
        }
        glmDraw(pmodel2, GLM_SMOOTH | GLM_MATERIAL);

    glPopMatrix();
    glutSwapBuffers();
}
...

按下F9即可看到執行結果

再繼續新增第三隻海豚的模型

...
GLMmodel* pmodel3 = NULL;
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        angle++;
        glRotatef(angle, 0,1,0);
        if (!pmodel) {
        pmodel = glmReadOBJ("data/dolphins1.obj"); //第一隻海豚
        if (!pmodel) exit(0);
        glmUnitize(pmodel);
        glmFacetNormals(pmodel);
        glmVertexNormals(pmodel, 90.0);
        }
        glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);

        if (!pmodel2) {
        pmodel2 = glmReadOBJ("data/dolphins2.obj"); //第二隻海豚
        if (!pmodel2) exit(0);
        glmUnitize(pmodel2);
        glmFacetNormals(pmodel2);
        glmVertexNormals(pmodel2, 90.0);
        }
        glmDraw(pmodel2, GLM_SMOOTH | GLM_MATERIAL);\

        if (!pmodel3) {
        pmodel3 = glmReadOBJ("data/dolphins3.obj"); //第三隻海豚
        if (!pmodel3) exit(0);
        glmUnitize(pmodel3);
        glmFacetNormals(pmodel3);
        glmVertexNormals(pmodel3, 90.0);
        }
        glmDraw(pmodel3, GLM_SMOOTH | GLM_MATERIAL);

    glPopMatrix();
    glutSwapBuffers();
}
...

按下F9即可看到執行結果

3_將海豚組成海豚人(?)

將三隻海豚的模型，分別移動到適當的位置

#include <string.h>
#include <stdlib.h>
#include <GL/glut.h>
#include "glm.h"
GLMmodel* pmodel = NULL;
GLMmodel* pmodel2 = NULL;
GLMmodel* pmodel3 = NULL;
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        angle++;
        glRotatef(angle, 0,1,0);

        if (!pmodel) {
        pmodel = glmReadOBJ("data/dolphins1.obj"); //第一隻海豚
        if (!pmodel) exit(0);
        glmUnitize(pmodel);
        glmFacetNormals(pmodel);
        glmVertexNormals(pmodel, 90.0);
        }

        if (!pmodel2) {
        pmodel2 = glmReadOBJ("data/dolphins2.obj"); //第二隻海豚
        if (!pmodel2) exit(0);
        glmUnitize(pmodel2);
        glmFacetNormals(pmodel2);
        glmVertexNormals(pmodel2, 90.0);
        }

        if (!pmodel3) {
        pmodel3 = glmReadOBJ("data/dolphins3.obj"); //第三隻海豚
        if (!pmodel3) exit(0);
        glmUnitize(pmodel3);
        glmFacetNormals(pmodel3);
        glmVertexNormals(pmodel3, 90.0);
        }

        glPushMatrix();  //對第一隻海豚作移動旋轉縮放的動作
            glTranslatef(0,0,0);
            glRotatef(90,0,1,0);
            glScalef(0.8,0.8,0.8);
            glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL);
        glPopMatrix();

        glPushMatrix(); //對第二隻海豚作移動旋轉縮放的動作
            glTranslatef(0.5,0,0);
            glScalef(0.4,0.4,0.4);
            glmDraw(pmodel2, GLM_SMOOTH | GLM_MATERIAL);
        glPopMatrix();

        glPushMatrix(); //對第三隻海豚作移動旋轉縮放的動作
            glTranslatef(-0.5,0,0);
            glRotatef(180,0,1,0);
            glScalef(0.4,0.4,0.4);
            glmDraw(pmodel3, GLM_SMOOTH | GLM_MATERIAL);
        glPopMatrix();

    glPopMatrix();
    glutSwapBuffers();
}

const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };
const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };

#include <mmsystem.h> //(1)Multimedia system
void keyboard(unsigned char key,int x,int y)
{   //(5)Add keyboard for Do/Re/Mi/Fa/So
    if(key=='1') PlaySound("Do.wav",NULL,SND_ASYNC);
    if(key=='2') PlaySound("Re.wav",NULL,SND_ASYNC);
    if(key=='3') PlaySound("Mi.wav",NULL,SND_ASYNC);
    if(key=='4') PlaySound("Fa.wav",NULL,SND_ASYNC);
    if(key=='5') PlaySound("So.wav",NULL,SND_ASYNC);
}

void mouse(int button,int state,int x,int y)
{   //(2)mouse function, use PlaySound
    PlaySound("C:\\Users\\user\\Desktop\\myGLMsample\\data\\Shot.wav",NULL,SND_ASYNC);
    //(3)PlaySound的路徑要記得用\\或/
}

int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH | GLUT_RGB);
    glutCreateWindow("Yes, 3D Model Here");
    glutKeyboardFunc(keyboard);
    glutMouseFunc(mouse);
    glutDisplayFunc(display);
    glutIdleFunc(display);
    glClearColor(1,1,1,1);

    //glEnable(GL_CULL_FACE);
    //glCullFace(GL_BACK);
    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);
    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);
    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();
}

按下F9即可看到執行結果