資源簡介
目的: （1）掌握分形和分維的概念； （2）掌握分形的遞歸方法、L 系統的文法構圖法和 IFS 迭代函數系統。
內容: 利用建模方法、消隱和渲染技術，設計一個完整真實地場景，并實現簡單的場景漫游 要求： （1）生成至少一個植物的模型，植物可以是分形草和分形樹； （2）對模型設置顏色 。
代碼片段和文件信息
#include?
#include?“3D-tree.h“
GLint?WindW?=?800;
GLint?WindH?=?600;
GLfloat?oldx?oldy;//鼠標移動因子
GLfloat?xangle?=?15.0f;
GLfloat?yangle?=?-15.0f;//旋轉因子??
GLfloat?PI?=?3.14;
string?way[3];?//提供生成規則?
string?rule?temprule;
float?len;?//單步長
float?len1;
//float?Alphax;
float?Alphay;
float?Alphaz;
int?k;???//樹干樹
int?n;??//迭代次數
Node???stack[150];
int????stackpointer;
static?GLuint?textName[3];
char*?filename[3]?=?{?“data2\\1.1.bmp“?“data2\\wall.bmp“?“data2\\door1.bmp“?};
Image?image[3];
void?Draw_Cube（GLfloat?x1?GLfloat?x2?GLfloat?y1?GLfloat?y2?GLfloat?z1?GLfloat?z2）;
void?LSystemRule（）;
void?drawGrass（）;
void?readImage（char*?fname?int?m）
{
FILE*?pfile?=?NULL;
fopen_s（&pfile?fname?“rb“）;
if?（pfile?==?0）?exit（0）;
//讀取圖像大小
fseek（pfile?0x0012?SEEK_SET）;
fread（&image[m].imagewidth?sizeof（image[m].imagewidth）?1?pfile）;
fread（&image[m].imageheight?sizeof（image[m].imageheight）?1?pfile）;
//計算像素數據長度
image[m].pixellength?=?image[m].imagewidth?*?3;
while?（image[m].pixellength?%?4?!=?0）?image[m].pixellength++;?//?補充數據，直到pixellength是的倍數
image[m].pixellength?*=?image[m].imageheight;
//讀取像素數據
image[m].pixeldata?=?（GLubyte*）malloc（image[m].pixellength）;
if?（image[m].pixeldata?==?0）?exit（0）;
fseek（pfile?54?SEEK_SET）;
fread（image[m].pixeldata?image[m].pixellength?1?pfile）;
//關閉文件
fclose（pfile）;
}
/////////////////////////////////
void??init（）
{
//glClearColor（0.0?0.0?1.0?0.0）;
glMatrixMode（GL_PROJECTION）;
glLoadIdentity（）;
glOrtho（-25.0?25.0?-25.0?25.0?-25.0?25.0）;
glMatrixMode（GL_MODELVIEW）;
glEnable（GL_DEPTH_TEST）;
LSystemRule（）;
for?（int?i?=?0;?i? {
//讀取圖像文件
glPixelStorei（GL_UNPACK_ALIGNMENT?1）;
readImage（filename[i]?i）;
glGenTextures（1?&textName[i]）;
glBindTexture（GL_TEXTURE_2D?textName[i]）;
//加載紋理
glTexImage2D（GL_TEXTURE_2D?0?GL_RGB?image[i].imagewidth?image[i].imageheight?0
GL_BGR_EXT?GL_UNSIGNED_BYTE?image[i].pixeldata）;
//設置紋理過濾
glTexParameteri（GL_TEXTURE_2D?GL_TEXTURE_MIN_FILTER?GL_LINEAR）;
glTexParameteri（GL_TEXTURE_2D?GL_TEXTURE_MAG_FILTER?GL_LINEAR）;
glTexParameteri（GL_TEXTURE_2D?GL_TEXTURE_WRAP_S?GL_REPEAT）;
glTexParameteri（GL_TEXTURE_2D?GL_TEXTURE_WRAP_T?GL_REPEAT）;
//設置紋理環境
//glTexEnvf（GL_TEXTURE_ENV?GL_TEXTURE_ENV_MODE?GL_REPLACE）;??//紋理
}
glDisable（GL_BLEND）;
}
void?Draw_Cube（GLfloat?x1GLfloat?x2GLfloat?y1GLfloat?y2GLfloat?z1GLfloat?z2）??
{//由立方體組成，可知六個參數即可構造八個頂點??
int?i?j;??
GLfloat?vertex[8][3]?=?{??
//八個頂點，從v1-v8??
x1y1z2??//0
x2y1z2??//1
x1y2z2??//2
x2y2z2??//3
x1y1z1??//4
x2y1z1??//5
x1y2z1??//6
x2y2z1??//7
};??
GLint?surface[6][4]?=?{??
//v1對應0以此類推??
0132??//front
4576??//back
2376??//top
0154??//bottom
0264??//left
1375???//right
};
//將每個立方體分成六個面繪制?
for（i?=?0;?i? {
if?（i?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
????..A..H.?????49664??2020-05-27?13:34??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\.suo
?????文件???37867520??2020-05-27?13:34??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\Browse.VC.db
?????文件???42139648??2020-05-24?15:41??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\ipch\AutoPCH\26e5c1166cbd822c\MAIN.ipch
?????文件?????327680??2020-05-25?20:14??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\ipch\AutoPCH\39478fb5b7e80bc9\POINT2.ipch
?????文件???32178176??2020-05-27?10:23??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\ipch\AutoPCH\60516b5b0119225b\3D-TREE.ipch
?????文件???30801920??2020-05-17?21:52??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\ipch\AutoPCH\964240bb27e95747\PCH.ipch
?????文件???32243712??2020-05-25?19:42??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\ipch\AutoPCH\a43c841fe80e3f6b\FRACTAL_GRASS.ipch
?????文件???31981568??2020-05-25?16:59??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\ipch\AutoPCH\a69ba51fc2ab32d5\源.ipch
?????文件???30801920??2020-05-25?20:12??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\ipch\AutoPCH\b54c090000b8d0f8\3D-TREE.ipch
?????文件????4128768??2020-05-25?19:53??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\ipch\AutoPCH\dd1c20751debda44\MOUNTAIN.ipch
?????文件?????327680??2020-05-17?21:47??ConsoleApplication6-分形\.vs\ConsoleApplication6-分形\v15\ipch\d6ef6b62776e58b1.ipch
?????文件???????8814??2020-05-25?21:40??ConsoleApplication6-分形\ConsoleApplication6\3D-tree.cpp
?????文件????????439??2018-05-08?10:29??ConsoleApplication6-分形\ConsoleApplication6\3D-tree.h
?????文件???????7929??2020-05-25?20:46??ConsoleApplication6-分形\ConsoleApplication6\ConsoleApplication6.vcxproj
?????文件???????1072??2020-05-25?20:41??ConsoleApplication6-分形\ConsoleApplication6\ConsoleApplication6.vcxproj.filters
?????文件????????165??2020-05-17?21:47??ConsoleApplication6-分形\ConsoleApplication6\ConsoleApplication6.vcxproj.user
?????文件?????720054??2020-05-25?21:39??ConsoleApplication6-分形\ConsoleApplication6\data2\1.1.bmp
?????文件?????691254??2016-05-25?21:44??ConsoleApplication6-分形\ConsoleApplication6\data2\door1.bmp
?????文件?????720054??2018-05-08?16:54??ConsoleApplication6-分形\ConsoleApplication6\data2\ground2.bmp
?????文件?????720054??2016-05-25?21:05??ConsoleApplication6-分形\ConsoleApplication6\data2\wall.bmp
?????文件?????194675??2020-05-25?21:40??ConsoleApplication6-分形\ConsoleApplication6\Debug\3D-tree.obj
?????文件???????4448??2020-05-25?21:40??ConsoleApplication6-分形\ConsoleApplication6\Debug\ConsoleA.4E9DC3A7.tlog\CL.command.1.tlog
?????文件??????44786??2020-05-25?21:40??ConsoleApplication6-分形\ConsoleApplication6\Debug\ConsoleA.4E9DC3A7.tlog\CL.read.1.tlog
?????文件???????5210??2020-05-25?21:40??ConsoleApplication6-分形\ConsoleApplication6\Debug\ConsoleA.4E9DC3A7.tlog\CL.write.1.tlog
?????文件????????244??2020-05-25?21:40??ConsoleApplication6-分形\ConsoleApplication6\Debug\ConsoleA.4E9DC3A7.tlog\ConsoleApplication6.lastbuildstate
?????文件???????5830??2020-05-25?21:40??ConsoleApplication6-分形\ConsoleApplication6\Debug\ConsoleA.4E9DC3A7.tlog\li
?????文件???????4076??2020-05-25?21:40??ConsoleApplication6-分形\ConsoleApplication6\Debug\ConsoleA.4E9DC3A7.tlog\li
?????文件????????740??2020-05-25?21:40??ConsoleApplication6-分形\ConsoleApplication6\Debug\ConsoleA.4E9DC3A7.tlog\li
?????文件????????307??2020-05-25?21:40??ConsoleApplication6-分形\ConsoleApplication6\Debug\ConsoleApplication6.log
?????文件?????178089??2020-05-25?19:41??ConsoleApplication6-分形\ConsoleApplication6\Debug\fractal_grass.obj
............此處省略35個文件信息
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