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3DTree.cpp
资源名称：3dexplorerTest.rar　[点击查看]
上传用户：hkb425
上传日期：2007-06-16
资源大小：34191k
文件大小：9k
源码类别：

游戏引擎

开发平台：

Visual C++

3DTree.cpp：源码内容
  1. // 3DTree.cpp: implementation of the C3DTree class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  5. #include "stdafx.h"
  6. #include "3DTree.h"
  7. #include "Texmanager.h"
  8. #include "math.h"
  9. #include "heightmap.h"
  10. //////////////////////////////////////////////////////////////////////
  11. // Construction/Destruction
  12. //////////////////////////////////////////////////////////////////////
  14. C3DTree::C3DTree()
  15. {
  16. m_szTree=1;
  17.     m_height=m_szTree*60;
  18. }
  20. C3DTree::~C3DTree()
  21. {
  23. }
  24. bool C3DTree::Init3DTree(int type,float size)
  25. {
  26.  m_szTree = size;
  27.  m_height=m_szTree*60;
  28.  m_type=type;
  30.  CTexManager cTexManager;
  31.  //////////////read blend skin texture
  32.  if(type==1)
  33.  {
  34.          texTreeBody=cTexManager.GetTextureID(TEX_TREEBODY_0);
  35.  texBranch=cTexManager.GetTextureID(TEX_BRANCH_0);
  36.  }
  37.  else
  38.  {
  39.          texTreeBody=cTexManager.GetTextureID(TEX_TREEBODY_1);
  40.  texBranch=cTexManager.GetTextureID(TEX_BRANCH_1);
  41.  }
  42.      return true;
  43. }
  44. void C3DTree::Render3DTree(VERTEX pos)
  45. {
  46.     glPushMatrix();
  47. glTranslatef(pos.xpos,pos.ypos,pos.zpos);
  49.     Draw3DTree();
  51.     glPopMatrix();
  53. if(m_type==1)
  54. CHeightmap::m_numTriangles += 100 ;
  55. else
  56. CHeightmap::m_numTriangles += 68 ;
  57. }
  58. void C3DTree::Draw3DTree()
  59. {
  60.     ///////////////////////////////////
  61. //////////Draw Tree Body
  62.     glDisable(GL_ALPHA_TEST);
  63. glDisable(GL_BLEND);
  64.   glBindTexture(GL_TEXTURE_2D, texTreeBody);
  65. glEnable(GL_TEXTURE_2D);
  66. glBegin(GL_QUAD_STRIP);
  67.     for(float i=0;i<8;i++)
  68. {
  69.         glTexCoord2f(i*0.3f,0);    
  70. glVertex3f(-m_szTree*sinf(i*45*0.0174533f),0,-m_szTree*cosf(i*45*0.0174533f));
  71.         glTexCoord2f(i*0.3f+0.3f,8);    
  72. glVertex3f(-m_szTree*sinf(i*45*0.0174533f)*0.1f,m_height,-m_szTree*cosf(i*45*0.0174533f)*0.1f);
  73. }
  74.     glTexCoord2f(2.4f,0); 
  75.     glVertex3f(0,0,-m_szTree);
  76.     glTexCoord2f(2.7f,8);    
  77. glVertex3f(0,m_height,-m_szTree*0.1f);
  78.     glEnd();
  80.     //////////////////////////////////////////
  81. ///////////////// Draw Branch ////////////
  82.     glAlphaFunc(GL_GREATER,0.10f);
  83. glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
  84. glEnable(GL_BLEND);
  85.     glEnable(GL_ALPHA_TEST);
  87.   glBindTexture(GL_TEXTURE_2D, texBranch);
  88. glEnable(GL_TEXTURE_2D);
  89.     
  90. if(m_type==1)
  91. DrawYellowTree();
  92. else
  93. DrawGreenTree();
  95. ////////////////////////////////////
  97.     glDisable(GL_ALPHA_TEST);
  98. glDisable(GL_BLEND); 
  99. }
  100. void C3DTree::DrawYellowTree()
  101. {
  103.     //////////////////////////////////
  104.     glPushMatrix();
  105.     //////////////////////////////////
  106. glTranslatef(0,m_height*0.24f,0);
  107. glRotatef(0,  0.0f,1.0f,0.0f);
  108.     DrawBranch(m_height*0.2f,m_height*0.2f);
  110. glTranslatef(0,m_height*0.02f,0);
  111. glRotatef(180,  0.0f,1.0f,0.0f);
  112.     DrawBranch(m_height*0.31f,m_height*0.31f);
  113.   
  114. glTranslatef(0,m_height*0.03f,0);
  115. glRotatef(70,  0.0f,1.0f,0.0f);
  116.     DrawBranch(m_height*0.32f,m_height*0.32f);
  117.  
  118. glTranslatef(0,m_height*0.03f,0);
  119. glRotatef(200,  0.0f,1.0f,0.0f);
  120.     DrawBranch(m_height*0.32f,m_height*0.32f);
  122. glTranslatef(0,m_height*0.03f,0);
  123. glRotatef(90,  0.0f,1.0f,0.0f);
  124.     DrawBranch(m_height*0.31f,m_height*0.31f);
  126.  
  127. glTranslatef(0,m_height*0.03f,0);
  128. glRotatef(150,  0.0f,1.0f,0.0f);
  129.     DrawBranch(m_height*0.31f,m_height*0.31f);
  131. glTranslatef(0,m_height*0.03f,0);
  132. glRotatef(80,  0.0f,1.0f,0.0f);
  133.     DrawBranch(m_height*0.31f,m_height*0.31f);
  134.  
  135. glTranslatef(0,m_height*0.031f,0);
  136. glRotatef(190,  0.0f,1.0f,0.0f);
  137.     DrawBranch(m_height*0.3f,m_height*0.3f);
  139. glTranslatef(0,m_height*0.03f,0);
  140. glRotatef(70,  0.0f,1.0f,0.0f);
  141.     DrawBranch(m_height*0.29f,m_height*0.29f);
  142. /*
  143. glTranslatef(0,m_height*0.05f,0);
  144. glRotatef(180,  0.0f,1.0f,0.0f);
  145.     DrawBranch(m_height*0.31f,m_height*0.31f);
  146.   
  147. glTranslatef(0,m_height*0.032f,0);
  148. glRotatef(110,  0.0f,1.0f,0.0f);
  149.     DrawBranch(m_height*0.29f,m_height*0.29f);
  150.  
  151. glTranslatef(0,m_height*0.032f,0);
  152. glRotatef(70,  0.0f,1.0f,0.0f);
  153.     DrawBranch(m_height*0.28f,m_height*0.28f);
  154. */
  155. glTranslatef(0,m_height*0.041f,0);
  156. glRotatef(190,  0.0f,1.0f,0.0f);
  157.     DrawBranch(m_height*0.26f,m_height*0.26f);
  159.  
  160. glTranslatef(0,m_height*0.031f,0);
  161. glRotatef(110,  0.0f,1.0f,0.0f);
  162.     DrawBranch(m_height*0.24f,m_height*0.24f);
  164. glTranslatef(0,m_height*0.031f,0);
  165. glRotatef(80,  0.0f,1.0f,0.0f);
  166.     DrawBranch(m_height*0.23f,m_height*0.23f);
  168. glTranslatef(0,m_height*0.03f,0);
  169. glRotatef(200,  0.0f,1.0f,0.0f);
  170.     DrawBranch(m_height*0.22f,m_height*0.22f);
  172. glTranslatef(0,m_height*0.03f,0);
  173. glRotatef(90,  0.0f,1.0f,0.0f);
  174.     DrawBranch(m_height*0.21f,m_height*0.21f);
  176.  
  177. glTranslatef(0,m_height*0.04f,0);
  178. glRotatef(150,  0.0f,1.0f,0.0f);
  179.     DrawBranch(m_height*0.20f,m_height*0.20f);
  181. glTranslatef(0,m_height*0.03f,0);
  182. glRotatef(200,  0.0f,1.0f,0.0f);
  183.     DrawBranch(m_height*0.19f,m_height*0.19f);
  185. glTranslatef(0,m_height*0.03f,0);
  186. glRotatef(90,  0.0f,1.0f,0.0f);
  187.     DrawBranch(m_height*0.18f,m_height*0.18f);
  189.  
  190. glTranslatef(0,m_height*0.03f,0);
  191. glRotatef(150,  0.0f,1.0f,0.0f);
  192.     DrawBranch(m_height*0.17f,m_height*0.17f);
  193. /*
  194. glTranslatef(0,m_height*0.03f,0);
  195. glRotatef(160,  0.0f,1.0f,0.0f);
  196.     DrawBranch(m_height*0.16f,m_height*0.16f);
  197.  
  198. glTranslatef(0,m_height*0.032f,0);
  199. glRotatef(190,  0.0f,1.0f,0.0f);
  200.     DrawBranch(m_height*0.15f,m_height*0.15f);
  202. glTranslatef(0,m_height*0.031f,0);
  203. glRotatef(100,  0.0f,1.0f,0.0f);
  204.     DrawBranch(m_height*0.14f,m_height*0.14f);
  205.   */
  206. glTranslatef(0,m_height*0.051f,0);
  207. glRotatef(190,  0.0f,1.0f,0.0f);
  208.     DrawBranch(m_height*0.13f,m_height*0.13f);
  210. glTranslatef(0,m_height*0.032f,0);
  211. glRotatef(120,  0.0f,1.0f,0.0f);
  212.     DrawBranch(m_height*0.12f,m_height*0.12f);
  214. ////////////top
  215. glTranslatef(0,-m_height*0.05f,0);
  216. DrawTop(m_height*0.2f,m_height*0.3f);
  217.    
  218. ////////////////////////////
  219. glPopMatrix();
  220. ////////////////////////////
  224. }
  225. void C3DTree::DrawGreenTree()
  226. {
  227.     //////////////////////////////////
  228.     glPushMatrix();
  229.     //////////////////////////////////
  230. glTranslatef(0,m_height*0.3f,0);
  231. glRotatef(0,  0.0f,1.0f,0.0f);
  232.     DrawBranch(m_height*0.2f,m_height*0.2f);
  234. glTranslatef(0,m_height*0.04f,0);
  235. glRotatef(170,  0.0f,1.0f,0.0f);
  236.     DrawBranch(m_height*0.25f,m_height*0.25f);
  238. glTranslatef(0,m_height*0.04f,0);
  239. glRotatef(80,  0.0f,1.0f,0.0f);
  240.     DrawBranch(m_height*0.3f,m_height*0.3f);
  241.   
  242. glTranslatef(0,m_height*0.04f,0);
  243. glRotatef(130,  0.0f,1.0f,0.0f);
  244.     DrawBranch(m_height*0.32f,m_height*0.32f);
  245.  
  246. glTranslatef(0,m_height*0.045f,0);
  247. glRotatef(200,  0.0f,1.0f,0.0f);
  248.     DrawBranch(m_height*0.32f,m_height*0.32f);
  250. glTranslatef(0,m_height*0.04f,0);
  251. glRotatef(90,  0.0f,1.0f,0.0f);
  252.     DrawBranch(m_height*0.28f,m_height*0.28f);
  254.  
  255. glTranslatef(0,m_height*0.045f,0);
  256. glRotatef(150,  0.0f,1.0f,0.0f);
  257.     DrawBranch(m_height*0.25f,m_height*0.25f);
  259. glTranslatef(0,m_height*0.05f,0);
  260. glRotatef(80,  0.0f,1.0f,0.0f);
  261.     DrawBranch(m_height*0.23f,m_height*0.23f);
  262.  
  263. glTranslatef(0,m_height*0.05f,0);
  264. glRotatef(90,  0.0f,1.0f,0.0f);
  265.     DrawBranch(m_height*0.2f,m_height*0.2f);
  266.  
  267. glTranslatef(0,m_height*0.05f,0);
  268. glRotatef(180,  0.0f,1.0f,0.0f);
  269.     DrawBranch(m_height*0.2f,m_height*0.2f);
  270.  
  271. glTranslatef(0,m_height*0.04f,0);
  272. glRotatef(90,  0.0f,1.0f,0.0f);
  273.     DrawBranch(m_height*0.16f,m_height*0.16f);
  275. glTranslatef(0,m_height*0.04f,0);
  276. glRotatef(180,  0.0f,1.0f,0.0f);
  277.     DrawBranch(m_height*0.15f,m_height*0.15f);
  279. ////////////top
  281. DrawTop(m_height*0.3f,m_height*0.3f);
  282.    
  283. ////////////////////////////
  284. glPopMatrix();
  285. ////////////////////////////
  286. }
  287. void C3DTree::DrawBranch(float width,float height)
  288. {
  289. glBegin(GL_QUADS);
  290.     ////////// face 1
  291.     glTexCoord2f(1,0);
  292.     glVertex3f(0,0,0);
  294.     glTexCoord2f(0,0);
  295.     glVertex3f(width,0,0);
  297.     glTexCoord2f(0,1);
  298.     glVertex3f(width,height,0);
  300.     glTexCoord2f(1,1);
  301.     glVertex3f(0,height,0);
  304.     ////////// face 2
  305.     glTexCoord2f(1,0);
  306.     glVertex3f(0,0,0);
  308.     glTexCoord2f(0,0);
  309.     glVertex3f(width*0.5f,height*0.5f,0.7071f*width);
  311.     glTexCoord2f(0,1);
  312.     glVertex3f(width,height,0);
  314.     glTexCoord2f(1,1);
  315.     glVertex3f(width*0.5f,height*0.5f,-0.7071f*width);
  317. glEnd();
  318. }
  319. void C3DTree::DrawTop(float width,float height)
  320. {
  321. glBegin(GL_QUADS);
  322.     ////////// face 1
  323.     glTexCoord2f(1,0);
  324.     glVertex3f(0,0,0);
  326.     glTexCoord2f(0,0);
  327.     glVertex3f(0.7071f*width,0.5f*height,0);
  329.     glTexCoord2f(0,1);
  330.     glVertex3f(0,height,0);
  332.     glTexCoord2f(1,1);
  333.     glVertex3f(-0.7071f*width,0.5f*height,0);
  335.     ////////// face 2
  336.     glTexCoord2f(1,0);
  337.     glVertex3f(0,0,0);
  339.     glTexCoord2f(0,0);
  340.     glVertex3f(0,height*0.5f,0.7071f*width);
  342.     glTexCoord2f(0,1);
  343.     glVertex3f(0,height,0);
  345.     glTexCoord2f(1,1);
  346.     glVertex3f(0,height*0.5f,-0.7071f*width);
  348. glEnd();
  349. }