week11_怎樣捏怎樣捏

將模型丟進來

模型打光

模型反轉180度回正面

程式碼:

#include <stdio.h>

#include "glm.h"

GLMmodel * model=NULL;

#include <GL/glut.h>

///打光第0步：宣告陣列，裡面有光的屬性值

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怎樣捏");

        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();

}