幽羊山之土-Week06_打光,模型

1.主題:打光Part1

Light 打光
到 http://www.cmlab.csie.ntu.edu.tw/~jsyeh/3dcg10/ 
       --> 下載: windows.zip, data.zip, glut32.dll (week03
    now -->source.zip (+下載,程式範例

執行 Light Material.exe 檔案
陣列宣告(Light,Material)
設定函式

GLfloat material_Kd[]={};
  //模型顏色





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開啟GLUT程式 (week01

進入transmission zero 網站,下載"freeglut 3.0.0 MinGW Package"
在 CodeBlocks 開啟GLUTproject
寫打光程式:
#include <GL/glut.h> 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 }; 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("Week06"); glutDisplayFunc(display); ///OpenGL設定 glClearColor(1,1,1,1); glEnable(GL_CULL_FACE); 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); glutMainLoop(); }

2.實作:GLM vs OBJ

從source.zip檔案中 ,開啟transformation.c ,找出要有的glm程式 ,輸入打光程式中
從source.zip檔案中 ,glm.h和glm.c放入專案的資料夾中 ,且glm.c改成glm.cpp
將CodeBlocks 的GLUTproject 中匯入glm.cpp

- 將odj模型放入 freeglut\bin 中(才能讀到模型

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更改後的打光程式:
#include <GL/glut.h> #include "glm.h" ///now要有3D Model 第1行 GLMmodel* pmodel = NULL; ///now要有3D Model 第2行 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 }; void display(){ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); if (!pmodel) { ///now要有3D Model pmodel = glmReadOBJ("data/flowers.obj"); ///now要有3D Model if (!pmodel) exit(0); ///now要有3D Model glmUnitize(pmodel); ///now要有3D Model glmFacetNormals(pmodel); ///now要有3D Model glmVertexNormals(pmodel, 90.0); ///now要有3D Model } ///now要有3D Model glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL); ///now要有3D Model glutSwapBuffers(); } int main(int argc,char**argv){ glutInit(&argc, argv); glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH); glutCreateWindow("Week06"); glutDisplayFunc(display); ///OpenGL設定 glClearColor(1,1,1,1); glEnable(GL_CULL_FACE); 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); glutMainLoop(); }

3.作業

#include <GL/glut.h> #include "glm.h" ///now要有3D Model 第1行 GLMmodel* pmodel = NULL; ///now要有3D Model 第2行 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 }; float angle=0; void display(){ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushMatrix(); //備份矩陣 glRotatef(angle,0,1,0); //旋轉,對y軸 if (!pmodel) { ///now要有3D Model pmodel = glmReadOBJ("data/IB.obj"); ///now要有3D Model if (!pmodel) exit(0); ///now要有3D Model glmUnitize(pmodel); ///now要有3D Model glmFacetNormals(pmodel); ///now要有3D Model glmVertexNormals(pmodel, 90.0); ///now要有3D Model } ///now要有3D Model glmDraw(pmodel, GLM_SMOOTH | GLM_MATERIAL); ///now要有3D Model glPopMatrix(); //還原矩陣 glutSwapBuffers(); angle+=1; } int main(int argc,char**argv){ glutInit(&argc, argv); glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH); glutCreateWindow("Week06"); glutDisplayFunc(display); glutIdleFunc(display); ///OpenGL設定 glClearColor(1,1,1,1); //glEnable(GL_CULL_FACE); 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); glutMainLoop(); }