鹿的電腦圖學筆記week11

 Step01:

1.載入myGundam.zip，data(file)放到工作目錄freeglut\bin\data

2.程式寫入:

#include <opencv/highgui.h>

int main(){

    IplImage * img=cvLoadImage("data/Diffuse.jpg");

    cvShowImage("week11",img);

    cvWaitKey();

}

3.執行結果

Step02:

1.加入上週程式

#include <GL/glut.h>

#include <opencv/cv.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();

}

2.執行結果

Step03:

1.加入

#include "glm.h"

GLMmodel*pmodel=NULL;

2.display()加入

if(pmodel==NULL){

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

        glmUnitize(pmodel);

        glmFacetNormals(pmodel);

        glmVertexNormals(pmodel, 90.0);

    }

glmDraw(pmodel,GLM_TEXTURE);

Step04:

1.寫入float angle=0;

2.display()

glPushMatrix();

        glRotatef(angle,0,1,0);

        glmDraw(pmodel,GLM_TEXTURE);

    glPopMatrix();

glutSwapBuffers();

    angle+=1;

3.main()

glutIdleFunc(display);