2024年5月6日 星期一

week12 電腦圖學

##week12-1_obj_gundam_hand1_hand2

0.安裝freeglut把libfreeglut32.a複製成libglut32.a

1.OpenCV要安裝起來，要記得勾Add PATH, 不要改目錄，再重開codeblocks

2.把codeblocks Setting-Compiler加入3個設定:

- Search direction 的 compiler 要設 C:\OpenCV2.1\include

- Search direction 的 Linker 要設 C:\OpenCV2.1\lib

- Linker settng 的要設 cv210   cxcore210   highgui210


再把Github 上周的程式，拿下來

1.把 week11-3_obj_gundam_hand1_hand2 複製到桌面

2.改目錄名 week12-1_obj_gundam_hand1_hand2

3.把 .cbp，改檔名 week12-1_obj_gundam_hand1_hand2.cbp

4.再用 CodeBlocks 的 File-Open 開啟剛剛的 .cbp 檔

#include <opencv/highgui.h> ///使用 OpenCV 2.1 比較簡單, 只要用 High GUI 即可
#include <opencv/cv.h>
#include <GL/glut.h>
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename); ///OpenCV讀圖
    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩 (需要cv.h)
    glEnable(GL_TEXTURE_2D); ///1. 開啟貼圖功能
    GLuint id; ///準備一個 unsigned int 整數, 叫 貼圖ID
    glGenTextures(1, &id); /// 產生Generate 貼圖ID
    glBindTexture(GL_TEXTURE_2D, id); ///綁定bind 貼圖ID
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖T, 就重覆貼圖
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖S, 就重覆貼圖
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /// 貼圖參數, 放大時的內插, 用最近點
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); /// 貼圖參數, 縮小時的內插, 用最近點
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}
///上週有做過, 請用剪貼的
#include <GL/glut.h>
#include "glm.h"
GLMmodel * pmodel = NULL;
GLMmodel * arml = NULL;
GLMmodel * arm2 = NULL;
/*void drawmodel(void)
{
    if (!pmodel)
    {
        pmodel = glmReadOBJ("arm1.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!pmodel)
            exit(0);
        glmUnitize(pmodel);
        glmFacetNormals(pmodel);
        glmVertexNormals(pmodel, 90.0);
    }
    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE);
}*/
void drawarml(void)
{
    if (!arml)
    {
        arml = glmReadOBJ("arm1.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!arml) exit(0);
        glmUnitize(arml);
        glmFacetNormals(arml);
        glmVertexNormals(arml, 90.0);
    }
    glmDraw(arml, GLM_SMOOTH | GLM_TEXTURE);
}
void drawarm2(void)
{
    if (!arm2)
    {
        arm2 = glmReadOBJ("arm2.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!arm2) exit(0);
        glmUnitize(arm2);
        glmFacetNormals(arm2);
        glmVertexNormals(arm2, 90.0);
    }
    glmDraw(arm2, GLM_SMOOTH | GLM_TEXTURE);
}
float angle=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glutSolidSphere(0.1,30,30);
    glPushMatrix();
    glTranslatef(-0.3,0.3,0);///(3)整體移動
    glRotatef(angle++,1,0,0);///(2)旋轉
    glTranslatef(-0.15,-0.25,0);///(1)
    drawarml(); ///glutSolidTeapot( 0.3 );
    glPopMatrix();
    glPushMatrix();
    glTranslatef(0.6,0.3,0);///(3)整體移動
    glRotatef(angle++,1,0,0);///(2)旋轉
    glTranslatef(-0.15,-0.25,0);///(1)
    drawarm2(); ///glutSolidTeapot( 0.3 );
    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 };
int main(int argc, char* argv[])
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("week07-2 obj gundam opencv texture");
    glutDisplayFunc(display);
    myTexture("Diffuse.jpg");
    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);
    glutIdleFunc(display);
    glutMainLoop();
}


##week12-2_obj_gundam_upper_lower_hand

0.先把 week12-1_obj_gundam_hand1_hand2 整個目錄，複製新的目錄，改目錄名 week12-2_obj_gundam_upper_lower_hand 上手臂、下手臂

1.把 .cbp 檔，修改黨名成 week12-2_obj_gundam_upper_lower_hand.cbp

2.CodeBlocks 把 .cbp 檔案開起來，把下面的的專案Title 改成week12-2_obj_gundam_upper_lower_hand

要改的程式碼，多宣告2顆指標

```cpp 

GLMmodel  *  upper = NULL;

GLMmodel  *  lower = NULL;

```

再把 drawmodel() 複製兩份，分別叫 void 

drawLower(){...}

裡面的 pmodel 都改成 upper 或 lower 檔名改成 upper.obj 和 lower.obj

void drawUpper(void)
{
    if (!upper)
    {
        upper = glmReadOBJ("upper.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!upper)
            exit(0);
        glmUnitize(upper);
        glmFacetNormals(upper);
        glmVertexNormals(upper, 90.0);
    }
    glmDraw(upper, GLM_SMOOTH | GLM_TEXTURE);
}
void drawLower(void)
{
    if (!lower)
    {
        lower = glmReadOBJ("lower.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!lower)
            exit(0);
        glmUnitize(lower);
        glmFacetNormals(lower);
        glmVertexNormals(lower, 90.0);
    }
    glmDraw(lower, GLM_SMOOTH | GLM_TEXTURE);
}

利用 Maya 登入後,New 在 Import hand1.obj 要把它才裁切出(下手臂)lower.obj和upper.obj(上手臂)

最後，先把drawLower() 函數調好，再掛到drauUpper()的後面

##week12-3_obj_gundam_body_upper_lower
1.複製目錄week12-1_obj_gundam_opencv_hand1_hand2 更改檔名
week12-3_obj_gundam_body_upper_lower
2.在開啟Codeblocks week12-3_obj_gundam_body_upper_lower
#include <opencv/highgui.h> ///使用 OpenCV 2.1 比較簡單, 只要用 High GUI 即可
#include <opencv/cv.h>
#include <GL/glut.h>
int myTexture(char * filename)
{
    IplImage * img = cvLoadImage(filename); ///OpenCV讀圖
    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩 (需要cv.h)
    glEnable(GL_TEXTURE_2D); ///1. 開啟貼圖功能
    GLuint id; ///準備一個 unsigned int 整數, 叫 貼圖ID
    glGenTextures(1, &id); /// 產生Generate 貼圖ID
    glBindTexture(GL_TEXTURE_2D, id); ///綁定bind 貼圖ID
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖T, 就重覆貼圖
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖S, 就重覆貼圖
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /// 貼圖參數, 放大時的內插, 用最近點
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); /// 貼圖參數, 縮小時的內插, 用最近點
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}

///上週有做過, 請用剪貼的
#include "glm.h"
GLMmodel * pmodel = NULL;
GLMmodel * hand1 = NULL;
GLMmodel * hand2 = NULL;
GLMmodel * lower=NULL;
GLMmodel * upper=NULL;
GLMmodel * body = NULL;
void drawBody(void)
{
    if (!body) {
        body = glmReadOBJ("body.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!body) exit(0);
        glmUnitize(body);
        glmFacetNormals(body);
        glmVertexNormals(body, 90.0);
    }

    glmDraw(body, GLM_SMOOTH | GLM_TEXTURE);
}
void drawPmodel(void)
{
    if (!pmodel) {
        pmodel = glmReadOBJ("pmodel.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!pmodel) exit(0);
        glmUnitize(pmodel);
        glmFacetNormals(pmodel);
        glmVertexNormals(pmodel, 90.0);
    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE);
}
void drawUpper(void)
{
    if (!upper) {
        upper = glmReadOBJ("upper.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!upper) exit(0);
        glmUnitize(upper);
        glmFacetNormals(upper);
        glmVertexNormals(upper, 90.0);
    }

    glmDraw(upper, GLM_SMOOTH | GLM_TEXTURE);
}
void drawLower(void)
{
    if (!lower) {
        lower = glmReadOBJ("lower.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!lower) exit(0);
        glmUnitize(lower);
        glmFacetNormals(lower);
        glmVertexNormals(lower, 90.0);
    }

    glmDraw(lower, GLM_SMOOTH | GLM_TEXTURE);
}
void drawhand1(void)
{
    if (!hand1) {
        hand1 = glmReadOBJ("hand1.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!hand1) exit(0);
        glmUnitize(hand1);
        glmFacetNormals(hand1);
        glmVertexNormals(hand1, 90.0);
    }
    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE);
}
void drawhand2(void)
{
    if (!hand2) {
        hand2 = glmReadOBJ("hand2.obj");
        ///上週的模型檔,放在奇怪的目錄裡 桌面\freeglut\bin
        ///本週,要換更好的地方
        if (!hand2) exit(0);
        glmUnitize(hand2);
        glmFacetNormals(hand2);
        glmVertexNormals(hand2, 90.0);
    }
    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE);
}


float angle=0,da=-1;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glRotatef(180,0,1,0);
        drawBody();
        glPushMatrix();
            glTranslatef(-0.15,0,0);
            glRotatef(angle+=da,1,0,0);
            glTranslatef(-0.025,-0.05,0);
            drawUpper();
            glPushMatrix();

                glTranslatef(0,-0.2,0);
                drawLower(); ///glutSolidTeapot( 0.3 );
            glPopMatrix();
        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 };
int main(int argc, char* argv[])
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("week07-2 obj gundam opencv texture");
    glutDisplayFunc(display);

    myTexture("Diffuse.jpg");
    glutIdleFunc(display);
    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();
}

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