:/ week10

 到https://jsyeh.org/3dcg10/下載 win32,data

下載解壓縮source

觀察3d模型的obj檔裡面的打光的法向量，頂點

開新的GLUT

#include <GL/glut.h>

#include "glm.h"

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

        glutSolidTeapot( 0.3 );

    glutSwapBuffers();

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week10");

    glutDisplayFunc(display);

    glutMainLoop();

}

把source裡的glm.cpp跟glm.h放到glut資料夾裡面

把data裡面的檔案複製到freeglut/bin裡面

#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("Al.obj");

            glmUnitize(pmodel);

            glmFacetNormals(pmodel);

            glmVertexNormals(pmodel,90);

        }

        glmDraw(pmodel,GLM_MATERIAL);

    glutSwapBuffers();

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week10");

    glutDisplayFunc(display);

    glutMainLoop();

}

開新的GLUT 下載OpenCV 更改setting 重開code blocks

#include <GL/glut.h>

#include "glm.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;

}

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_MATERIAL|GLM_TEXTURE);

    glutSwapBuffers();

}

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

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week10");

    myTexture("Diffuse.jpg");

    glutDisplayFunc(display);

    glutMainLoop();

}