chjyuʕ •ᴥ•ʔ week13 3D模型-2

 1.貼模型

• week08貼圖程式先貼上

程式碼:

#include <opencv/highgui.h>

#include <opencv/cv.h>

#include <GL/glut.h>

GLuint id1, id2; ///TODO:增加2個 貼圖ID

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage(filename);

    cvCvtColor(img,img, CV_BGR2RGB);

    glEnable(GL_TEXTURE_2D);

    GLuint 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);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);

    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);

    glBindTexture(GL_TEXTURE_2D, id1);//切換貼圖1

    glutSolidTeapot(0.3);

   glBindTexture(GL_TEXTURE_2D, id2);//切換貼圖2

    glBegin(GL_POLYGON);

        glTexCoord2f(0,1);glVertex2f(-1,-1);

        glTexCoord2f(1,1);glVertex2f(+1,-1);

        glTexCoord2f(1,0);glVertex2f(+1,+1);

        glTexCoord2f(0,0);glVertex2f(-1,+1);

    glEnd();

    glutSwapBuffers();

}

int main(int argc, char** argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week08 ");

    glutDisplayFunc(display);

    id1 = myTexture("diffuse.jpg");///改成模型.jpg

    id2 = myTexture("bg.jpg");

    glEnable(GL_DEPTH_TEST);

    glutMainLoop();

}

執行結果:

2.步驟

• 更改工作目錄cbp

• 增加檔案置專案夾
• 檔名更改glm.c ----> glm.cpp

• 增加程式碼:
• 更改為GLM_TEXTURE

程式碼:

#include "glm.h"

GLMmodel* pmodel = NULL;

void drawmodel(void)

{

    if (!pmodel) {

pmodel = glmReadOBJ("Gundam.obj");

if (!pmodel) exit(0);

glmUnitize(pmodel);

glmFacetNormals(pmodel);

glmVertexNormals(pmodel, 90.0);

    }

    glmDraw(pmodel, GLM_SMOOTH | GLM_TEXTURE);///有改

}

• 利用小畫家把圖片垂直翻轉

• 整體旋轉

程式碼:

glPushMatrix();

        glRotatef(angle, 0,1,0); 

        drawmodel();

    glPopMatrix();

• 如果讓他轉動，他會跑到布幕後，所以需要改程式碼

程式碼:

         glTexCoord2f(0,1);glVertex3f(-1,-1,+0.9);///後移

        glTexCoord2f(1,1);glVertex3f(+1,-1,+0.9);

        glTexCoord2f(1,0);glVertex3f(+1,+1,+0.9);

        glTexCoord2f(0,0);glVertex3f(-1,+1,+0.9);

• 加入支解的模型ex:GLMmodel*hand1=NULL;

程式碼:

GLMmodel*arm1=NULL;///切開的小模型

GLMmodel*arm2=NULL;

GLMmodel*hand1=NULL;

GLMmodel*hand2=NULL;