鯉魚-Week11

-安裝freeglut，短的變得更短:libglut32.a

-安裝OpenCV 2.1(Add PATH...)

-重開CodeBlocks

-打開新的GLUT專案，取名為week11_gundam

-下載 https://jsyeh.org/3dcg10/ 的 source.zip 裡面的 glm.h & glm.c(改名稱為glm.cpp)

-把glm.h&glm.cpp放到week11_gundam專案裡(main.cpp旁邊)

-把myGundam.zip裡的data模型檔放進freeglut/bin裡

-把myTexture放到程式的前面

-把10行基本GLUT程式碼放進去(茶壺)

-在main()/glutMainLoop()之前加上myTexture("data/Diffuse.jpg");

#include <opencv/highgui.h>

#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;

}

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_DOUBLE | GLUT_DEPTH );

    glutCreateWindow("week11 gundam");

    glutDisplayFunc( display );

    myTexture("data/Diffuse.jpg");

    glutMainLoop();

}

-把跟glm模型相關的程式貼上

    -#include "glm.h" //使用glm外掛

    -GLMmodel * pmodel=NULL;

    -display()裡面，畫模型的程式貼上

void display()

{

     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

     if(pmodel==NULL){

        pmodel=glmReadOBJ("data/gundam.obj");

        glmUnitize(pmodel);

        glmFacetNormals(pmodel);

        glmVertexNormals(pmodel,90);

     }

     glmDraw(pmodel,GLM_TEXTURE);

     glutSwapBuffers();

}

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include <GL/glut.h>

#include "glm.h"

GLMmodel * pmodel = NULL;

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;

}

float angle=0;

void display()

{

     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

     if(pmodel==NULL){

        pmodel=glmReadOBJ("data/gundam.obj");

        glmUnitize(pmodel);

        glmFacetNormals(pmodel);

        glmVertexNormals(pmodel,90);

     }

     glPushMatrix();

        glRotatef(angle,0,1,0);

        glmDraw(pmodel,GLM_TEXTURE);

     glPopMatrix();

     glutSwapBuffers();

     angle+=1;

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow("week11 gundam");

    glutDisplayFunc( display );

    glutIdleFunc(display);

    myTexture("data/Diffuse.jpg");

    glEnable(GL_DEPTH_TEST);

    glutMainLoop();

}