Week17

安裝OpenCV2.1含PATH
重開CodeBlocks,設定好Compiler的5個設定






安裝好 freeglut 並設定好libglut32.a, 開啟CodeBlocks,新增GLUT專案, 設定好glut,
再把 working_dir設定成小數點. 最後再copy freeglut的bin的freeglut.dll 檔到你的工作目錄裡






改裝GLUT專案,先用 Teapot畫出來,記得加入打光、gluLookAt調整攝影機位置, 再刪掉一些程式。
最後利用glm.cpp來改裝,使用glmReadOBJ()讀入模型,使用glmDraw(model,GLM_SMOOTH加GLM_TEXTURE)來畫模型



#include <GL/glut.h>
#include "glm.h"  ///TODO: 使用 glm的外掛
GLMmodel * model=NULL;///TODO: 指標變數, 指到 3D model
static void resize(int width, int height)
{
    const float ar = (float) width / (float) height;

    glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0);
    ///這個程式會從0,0,0看出去...我們的模式也會放0,0,0,衝突
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity() ;
    gluLookAt( 0,0,2, 0,0,0, 0,1,0);///TODO: 我們從0,0,2看中心

}

static void display(void)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();///TODO:
        ///glutSolidTeapot(1);///TODO: 放Teapot,等下要放 Gundam
        glmDraw(model, GLM_SMOOTH|GLM_TEXTURE);///TODO:
    glPopMatrix();///TODO:
    glutSwapBuffers();
}

///打光留下來
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, 5.0f, 5.0f, 0.0f };

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 };

/* Program entry point */

int main(int argc, char *argv[])
{
    glutInit(&argc, argv);
    glutInitWindowSize(640,480);
    glutInitWindowPosition(10,10);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutReshapeFunc(resize);
    glutDisplayFunc(display);
    ///TODO:刪 //glutKeyboardFunc(key);
    ///TODO:刪 //glutIdleFunc(idle);

    ///TODO:刪 glClearColor(1,1,1,1);
    ///TODO:刪 glEnable(GL_CULL_FACE);
    ///TODO:刪 glCullFace(GL_BACK);

    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);

    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);

    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);
    ///TODO:我們要把 OBJ檔讀進來 (glm.cpp幫忙)
    model = glmReadOBJ("Gundam.obj");///TODO:讀檔
    glmUnitize(model);///TODO: 縮成 -1...+1範圍


    glutMainLoop();

    return EXIT_SUCCESS;
}