莫名的一天week08

 week08

step01-1

https://jsyeh.org/3dcg10/ 

下載3個資料夾

data丟進window點選Transformation.exe

v對應vertex頂點

vt對應貼圖座標glTexCoord2f(tx,ty)

vn對應vertex normal法向量
f對應 面facet

step01-2

打開maya匯出一個obj檔

輸出一個f-16.obj檔丟進data裡

.obj

step02-1

開啟新的專案，複製某週的程式

把glm.h丟進專案的資料夾才能執行

把glm.c改成glm.cpp丟到專案裡

#include <GL/glut.h>

#include "glm.h"

GLMmodel * pmodel=NULL;

void display()

{

        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

        if(pmodel==NULL){

                pmodel=glmReadOBJ("F-16.obj");

        }

        glmDraw(pmodel,GLM_SMOOTH|GLM_MATERIAL);

        glutSolidTeapot(0.3);

        glutSwapBuffers();

}

int main(int argc, char *argv[])

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week08");

  glutDisplayFunc(display);

 glutMainLoop();

}

step02-2

複製上一個增加藍色那行

#include <GL/glut.h>

#include "glm.h"

GLMmodel * pmodel=NULL;

void display()

{

        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

        if(pmodel==NULL){

                pmodel=glmReadOBJ("F-16.obj");

        }

        glmDraw(pmodel,GLM_SMOOTH|GLM_MATERIAL);

       //// glutSolidTeapot(0.3);

        glutSwapBuffers();

}

int main(int argc, char *argv[])

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week08");

  glutDisplayFunc(display);

 glutMainLoop();

}

step03-1

開啟新專案

#include <GL/glut.h>

#include "glm.h"

GLMmodel * pmodel=NULL;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    if(pmodel==NULL)

    {

        pmodel=glmReadOBJ("Gundam.obj");

        glmUnitize(pmodel);

        glmFacetNormals(pmodel);

        glmVertexNormals(pmodel,90);

    }

    glmDraw(pmodel,GLM_SMOOTH|GLM_MATERIAL);

    /// glutSolidTeapot(0.3);

    glutSwapBuffers();

}

int main(int argc, char *argv[])

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week08");

    glutDisplayFunc(display);

    glutMainLoop();

}

step03-2

#include <GL/glut.h>

#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 "glm.h"

GLMmodel * pmodel=NULL;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    if(pmodel==NULL)

    {

        pmodel=glmReadOBJ("Gundam.obj");

        glmUnitize(pmodel);

        glmFacetNormals(pmodel);

        glmVertexNormals(pmodel,90);

    }

    glmDraw(pmodel,GLM_SMOOTH|GLM_MATERIAL|GLM_TEXTURE);

    /// glutSolidTeapot(0.3);

    glutSwapBuffers();

}

int main(int argc, char *argv[])

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week08");

    myTexture("Diffuse.jpg");

    glutDisplayFunc(display);

    glutMainLoop();

}