電腦圖學筆記

 複製上週程式碼

#include <GL/glut.h>

#include <opencv/highgui.h>

int main()

{

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

    cvShowImage("img", img);

    cvWaitKey(0);

}

=========================================================================

#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;

}

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");

    glutDisplayFunc(display);

    myTexture("Diffuse.jpg");

    glutMainLoop();

}

=======================================================================

我的鋼蛋跑不出來 嗚

#include <opencv/highgui.h> ///使用 OpenCV 2.1 比較簡單, 只要用 High GUI 即可

#include <GL/glut.h>

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include "glm.h"

GLMmodel * pmodel=NULL;

///GLUquadric * sphere = NULL;///指標,指到2次曲面

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;///旋轉角度

 void display()

 {

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,1,0);

        if(pmodel==NULL)

        {

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

            glmUnitize(pmodel);

            glmFacetNormals(pmodel);

            glmVertexNormals(pmodel,90);

        }

        glmDraw(pmodel,GLM_TEXTURE);

    glPopMatrix();

    glutSwapBuffers();

    angle+=0.01;

 }

 int main(int argc, char *argv[])///main()主函式 進階版

 {

    glutInit(&argc,argv);///把參數送給glutInit初始化

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);///雙緩衝區+3D深度功能

    glutCreateWindow("week11");///開GLUT視窗

    glEnable(GL_DEPTH_TEST);

    glutDisplayFunc(display);///顯示用的函式

    glutIdleFunc(display);

    myTexture("data/Diffuse.jpg");

    ///myTexture("earth.jpg");

    ///sphere=gluNewQuadric();///準備好2次曲面

    glutMainLoop();

 }