2024年5月16日 星期四

電腦圖學week13

 

#week13


##week13-1_glm_gundam_keyboard_angleID_mouse_motion_angle


0.設定好環境

1.桌面安裝 freeglut，把 lib 的l ibfreeglut.a複製成 libglut32.a

2.安裝 OpenCV 2.1 小心! Add PATH,用預設目錄


3.重開 CodeBlocks, , Setting-Compiler 裡要改3個地方

-compiler 的include 要加入C:\OpenCV2.1\include
 -linker 的 lib要加入C:\OpenCV2.1\lib
 -linker 的設定，要加入cv210 cxcore210 highgui210
再把GitGub的程式下載(兩種下載方法 Git指令or Download ZIP)再把

4.再把 GitHub 的程式下載, 再把 

week12-3_glm_gundam_keyboard_angleID_mouse_motion_angle 拿來改成

week13-1_glm_gundam_keyboard_angleID_mouse_motion_angle


5.修改程式碼

5.1 把float angle = 0; 改成
      float angle[20] = {};
      int angleID = 0; 



5.2加上Keyboard




5.3固定mouse新的位置



##week13-2_FILE_fopen_fprintf_fscanf


1. 把 week13-1 複製整個目錄, 改目錄名,  改 .cbp 名, Notepad++ 改裡面的 Title

2. 在 week13-2 裡, 要加 File

    FILE * fin = NULL;
    FILE * fout = NULL;

3. 在motion裡, 要加一段程式
    
    void motion (int x, int y)
    {
        angle[angleID] += y-oldY;
        oldX = x;
        oldY = y;
        glutPostRedisplay();
        if(fout==NULL) fout = fopen("angle.txt", "w+" );
        for (int i=0; i<20; i++)
        {
            printf("%.1f ", angle[i] );
            fprintf(fout, "%.1f ", angle[i] );
        }
        printf("\n");
        fprintf(fout,  "\n");
    }

4. 執行程式時, 用  mouse motion 一邊改變角度, 一邊大量產生角度值小黑關掉後, 可在目錄裡, 看到angle.txt 裡面就是剛剛印的一堆數值



5.小心，angle.txt 裡面要有空格，不然就錯了。printf()及fprintf()要加"%1f "

6.現在，要讀(按R，結果會變成剛剛動的軌跡)

void keyboard(unsigned char key, int x, int y)
{
    if(key=='r'){
        if(fin==NULL)fin = fopen("angle.txt","r");
        for(int i=0;i<20;i++){
            fscanf(fin,"%f",& angle[i]);
        }
        glutPostRedisplay();
    }
    if(key=='0') angleID = 0;
    if(key=='1') angleID = 1;
    if(key=='2') angleID = 2;
    if(key=='3') angleID = 3;
}

7.新增身體, 把老師傳的 body.obj body.mtl 傳到 data 裡面



8.把 drawmodel 複製貼上 把model 改成body

9.新增一行 GLMmodel * body = NULL;

10. 新增多個關節(作業)


#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;
}
#include <GL/glut.h>
#include "glm.h"
GLMmodel * pmodel = NULL;
GLMmodel * handA = NULL;
GLMmodel * handB = NULL;
GLMmodel * upperA = NULL;
GLMmodel * lowerA = NULL;
GLMmodel * body =NULL;

void drawBody(void)
{
    if (!body) {
body = glmReadOBJ("data/body.obj");
if (!body) exit(0);
glmUnitize(body);
glmFacetNormals(body);
glmVertexNormals(body, 90.0);
    }

    glmDraw(body, GLM_SMOOTH | GLM_TEXTURE);
}

void drawupperA(void)
{
    if (!upperA) {
upperA = glmReadOBJ("data/upperA.obj");
if (!upperA) exit(0);
glmUnitize(upperA);
glmFacetNormals(upperA);
glmVertexNormals(upperA, 90.0);
    }

    glmDraw(upperA, GLM_SMOOTH | GLM_TEXTURE);
}

void drawlowerA(void)
{
    if (!lowerA) {
lowerA = glmReadOBJ("data/lowerA.obj");
if (!lowerA) exit(0);
glmUnitize(lowerA);
glmFacetNormals(lowerA);
glmVertexNormals(lowerA, 90.0);
    }

    glmDraw(lowerA, GLM_SMOOTH | GLM_TEXTURE);
}

void drawmodel(void)
{
    if (!pmodel) {
pmodel = glmReadOBJ("data/Gundam.obj");
if (!pmodel) exit(0);
glmUnitize(pmodel);
glmFacetNormals(pmodel);
glmVertexNormals(pmodel, 90.0);
    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE);
}
void drawHandA(void)
{
    if (!handA) {
handA = glmReadOBJ("data/handA.obj");
if (!handA) exit(0);
glmUnitize(handA);
glmFacetNormals(handA);
glmVertexNormals(handA, 90.0);
    }

    glmDraw(handA, GLM_SMOOTH | GLM_TEXTURE);
}
void drawHandB(void)
{
    if (!handB) {
handB = glmReadOBJ("data/handB.obj");
if (!handB) exit(0);
glmUnitize(handB);
glmFacetNormals(handB);
glmVertexNormals(handB, 90.0);
    }

    glmDraw(handB, GLM_SMOOTH | GLM_TEXTURE);
}
void myBody() { ///我的身體
glPushMatrix(); ///備份矩陣
        glColor3f(1, 0, 0);///紅色的
        glutSolidCube(0.6);///myBody();
glPopMatrix(); ///還原矩陣
}
///float angle = 0, da = 1; ///加這行, 讓它轉動
float angle[20] = {}; ///20個角度 , 都設成0
int angleID = 0; ///可以是角度0, 角度1, 角度2, .....
int oldX = 0, oldY = 0;
#include <stdio.h>
FILE *fin =NULL;
FILE *fout =NULL;
void motion(int x, int y)
{
    angle[angleID] += y - oldY;
    oldX = x;
    oldY = y;
    glutPostRedisplay();
    if(fout==NULL)fout =fopen("angle.txt","w+");
    for(int i=0;i<20;i++){
        printf("%.1f ",angle[i]);
        fprintf(fout,"%.1f ",angle[i]);
    }
    printf("\n");
    fprintf(fout,"\n");
}

void mouse (int button, int state, int x, int y)
{
    oldX = x;
    oldY = y;
}

void keyboard(unsigned char key, int x, int y)
{
    if(key=='r'){
        if(fin==NULL)fin = fopen("angle.txt","r");
        for(int i=0;i<20;i++){
            fscanf(fin,"%f",& angle[i]);
        }
        glutPostRedisplay();
    }
    if(key=='0') angleID = 0;
    if(key=='1') angleID = 1;
    if(key=='2') angleID = 2;
    if(key=='3') angleID = 3;
}///記得在 int main()裡面, 加 glutKeyboardFunc(keyboard)

void display()
{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glDisable(GL_TEXTURE_2D);

    glPushMatrix();
        glRotatef(angle[0],0,1,0);
        drawBody(); ///先註解掉身體
    ///glutSolidSphere(0.1, 30, 30); ///圓球
        glEnable(GL_TEXTURE_2D);
        glColor3f(1,1,1);

    glPushMatrix();
        glTranslatef(-0.1,0,0);
        glRotatef(angle[1], 0, 0, 1);
        glRotatef(angle[2], 1, 0, 0);
        glTranslatef(0, -0.07, 0);
        drawupperA(); ///(3)上手臂放好
        glPushMatrix(); ///(0)
            glTranslatef(-0.02, -0.09, 0); ///(3) 再掛到上手臂的位置
            glRotatef(angle[3], 1, 0, 0); ///(2) x軸轉
            glTranslatef(0, -0.21, 0); ///(1)
            drawlowerA(); ///(0)
        glPopMatrix(); ///(0)
    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 };///加這行, 讓它轉動

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("week13-1 Gundam");
    glutDisplayFunc(display);
    glutIdleFunc(display); ///加這行, 讓它轉動
    glutMotionFunc(motion);
    glutMouseFunc(mouse);
    glutKeyboardFunc(keyboard); ///week13-1新加的

    myTexture("data/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);

    glutMainLoop();
}















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