翰翰的日記10

我是第10周

一開始老師先把data、windows、glut.dll下載下來把data跟glut.dill放到windows

好了後再載source把這三個用notepad++開起來

再來老師用codeblocks寫出範例程式

先把libglut32那個弄好

再把source裡的glm.c改成glm.cpp放到codeblocks裡，再把用notepad++開的transformation的程式碼貼到main.cpp裡就ok了

再來老師用codeblocks畫範例的貼圖

#include <GL/glut.h>

#include "glm.h"

GLMmodel * model=NULL;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    if(model==NULL)

    {

        model = glmReadOBJ("data/Al.obj");

        glmUnitize(model);

        glmFacetNormals(model);

        glmVertexNormals(model, 90);

    }

    glmDraw(model, GLM_SMOOTH | GLM_MATERIAL);

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week11我寫的");

    glutDisplayFunc(display);

    glutMainLoop();

}

接下來老師用上面的範例改成有顏色的版本並打光

#include <GL/glut.h>
#include "glm.h"
GLMmodel * model=NULL;

const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 3.0f, -5.0f, 0.0f };///光源位置

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };

void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    if(model==NULL)
    {
        model = glmReadOBJ("data/Al.obj");
        glmUnitize(model);
        glmFacetNormals(model);
        glmVertexNormals(model, 90);

    }
    glmDraw(model, GLM_SMOOTH | GLM_MATERIAL);
    glutSwapBuffers();

}
int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week11我寫的");
    glutDisplayFunc(display);

     ///打光需要3Dㄉdepth test
    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);
    ///打光1：要開啟光線，原來範例就寫好了
    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);
    ///打光2：要設定光的設定值(前面有陣列，這裡拿來用)
    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
    glLightfv(GL_LIGHT0, GL_POSITION, light_position);
    ///打光2.2：要把物體也設定好它的matreial
    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);


    glutMainLoop();
}

轉正面需要以下藍色的程式

#include <GL/glut.h>

#include "glm.h"

GLMmodel * model=NULL;

const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };

const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_position[] = { 2.0f, 3.0f, -5.0f, 0.0f };///光源位置

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };

const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };

const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    if(model==NULL)

    {

        model = glmReadOBJ("data/Al.obj");

        glmUnitize(model);

        glmFacetNormals(model);

        glmVertexNormals(model, 90);

    }

    glPushMatrix();

    glRotatef(180,0,1,0);

    glmDraw(model, GLM_SMOOTH | GLM_MATERIAL);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week11我寫的");

    glutDisplayFunc(display);

     ///打光需要3Dㄉdepth test

    glEnable(GL_DEPTH_TEST);

    glDepthFunc(GL_LESS);

    ///打光1：要開啟光線，原來範例就寫好了

    glEnable(GL_LIGHT0);

    glEnable(GL_NORMALIZE);

    glEnable(GL_COLOR_MATERIAL);

    glEnable(GL_LIGHTING);

    ///打光2：要設定光的設定值(前面有陣列，這裡拿來用)

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);

    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);

    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    ///打光2.2：要把物體也設定好它的matreial

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);

    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);

    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);

    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();

}