week08 蔣

 WEEK08

week08-0

到https://jsyeh.org/3dcg10/網頁,下載source,data,windows全部解壓縮,data放入window,

了解3D模型是如何產生的

v 對應 vertex頂點

vt對應貼圖座標

vn對應vertex normal法向量

f對應 面facet

去may匯出obj檔,取名叫F-16

從桌面把兩個檔案丟入data裡

打開Transformation換F-16,就有自己的模型了

week08-1 glm model

開啟新的glut專案,把範例全刪,先把上周的程式拿來用,改成如下

#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");

        glmUnitize(pmodel);

    }

    glmDraw(pmodel,GLM_SMOOTH | GLM_MATERIAL);

    glutSwapBuffers( );

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Week08");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop( );

}

week08-2

#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);

    glutSwapBuffers( );

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("Week08");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop( );

}

#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;

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);

    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( );

}