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LensFlare.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：8k
源码类别：

游戏引擎

开发平台：

Visual C++

LensFlare.cpp：源码内容
  1. // LensFlare.cpp: implementation of the CLensFlare class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  5. #include "stdafx.h"
  6. #include "LensFlare.h"
  7. #include "texmanager.h"
  8. #include "GameSetting.h"
  9. //////////////////////////////////////////////////////////////////////
  10. // Construction/Destruction
  11. //////////////////////////////////////////////////////////////////////
  13. CLensFlare::CLensFlare()
  14. {
  15. }
  16. CLensFlare::~CLensFlare()
  17. {
  18. }
  19. bool CLensFlare::InitLensFlare()
  20. {
  21. CTexManager cTexManager;
  22. m_texFlare[0]=cTexManager.GetTextureID(TEX_LENSFLARE_0);
  23. m_texFlare[1]=cTexManager.GetTextureID(TEX_LENSFLARE_1);
  24. m_texFlare[2]=cTexManager.GetTextureID(TEX_LENSFLARE_2);
  25. m_texFlare[3]=cTexManager.GetTextureID(TEX_LENSFLARE_3);
  26. m_texFlare[4]=cTexManager.GetTextureID(TEX_LENSFLARE_4);
  27. m_texFlare[5]=cTexManager.GetTextureID(TEX_LENSFLARE_5);
  28. m_texFlare[6]=cTexManager.GetTextureID(TEX_LENSFLARE_6);
  30. m_LightPos=VERTEX(128000,30000,-72000);
  32.     return true;
  33. }
  34. void CLensFlare::RenderLensFlare()
  35. {
  36. if(!CheckLightVisible())return;
  38. float size=0.06f;
  39.     float offset=1;
  40. glAlphaFunc(GL_GEQUAL,0.15f);
  41. glEnable(GL_ALPHA_TEST);
  43. glDisable(GL_DEPTH_TEST);
  44. glBlendFunc(GL_SRC_ALPHA,GL_ONE);
  45. glEnable(GL_BLEND);
  46.     glEnable(GL_TEXTURE_2D); 
  47.     glPushMatrix();
  49. glTranslatef(m_cHmap.m_ViewPos.xpos,m_cHmap.m_ViewPos.ypos,m_cHmap.m_ViewPos.zpos);
  50.    glRotatef(m_cHmap.m_ViewRotY,  0.0f,1.0f,0.0f);
  51. glRotatef(-m_cHmap.m_ViewRotX,  1.0f,0.0f,0.0f);
  52.     /////////////////////1
  53. glBindTexture(GL_TEXTURE_2D, m_texFlare[1]);
  54. glColor3f(0.05f,0.3f,0.5f);
  56. offset=1.3f;
  57. size=0.08f;
  58.    glBegin(GL_QUADS);
  59.     glTexCoord2f(0,0);
  60. glVertex3f(sx*offset-size,sy*offset-size,-1.03923f);
  62.      glTexCoord2f(1,0);
  63. glVertex3f(sx*offset+size,sy*offset-size,-1.03923f);
  65.     glTexCoord2f(1,1);
  66. glVertex3f(sx*offset+size,sy*offset+size,-1.03923f);
  68.     glTexCoord2f(0,1);
  69. glVertex3f(sx*offset-size,sy*offset+size,-1.03923f);
  70.     glEnd();
  71.     /////////////////////2
  72. glBindTexture(GL_TEXTURE_2D, m_texFlare[2]);
  73. glColor3f(0.0f,0.3f,0.5f);
  75. offset=0.7f;
  76. size=0.03f;
  77.    glBegin(GL_QUADS);
  78.     glTexCoord2f(0,0);
  79. glVertex3f(sx*offset-size,sy*offset-size,-1.03923f);
  81.      glTexCoord2f(1,0);
  82. glVertex3f(sx*offset+size,sy*offset-size,-1.03923f);
  84.     glTexCoord2f(1,1);
  85. glVertex3f(sx*offset+size,sy*offset+size,-1.03923f);
  87.     glTexCoord2f(0,1);
  88. glVertex3f(sx*offset-size,sy*offset+size,-1.03923f);
  89.     glEnd();
  90.     /////////////////////3
  91. glBindTexture(GL_TEXTURE_2D, m_texFlare[3]);
  92. glColor3f(0.05f,0.3f,0.5f);
  93.  
  94. offset=0.5f;
  95. size=0.04f;
  96.    glBegin(GL_QUADS);
  97.     glTexCoord2f(0,0);
  98. glVertex3f(sx*offset-size,sy*offset-size,-1.03923f);
  100.      glTexCoord2f(1,0);
  101. glVertex3f(sx*offset+size,sy*offset-size,-1.03923f);
  103.     glTexCoord2f(1,1);
  104. glVertex3f(sx*offset+size,sy*offset+size,-1.03923f);
  106.     glTexCoord2f(0,1);
  107. glVertex3f(sx*offset-size,sy*offset+size,-1.03923f);
  108.     glEnd();
  109.     /////////////////////4
  110. glBindTexture(GL_TEXTURE_2D, m_texFlare[4]);
  111. glColor3f(0.4f,0.1f,0.0f);
  112.  
  113. offset=0.1f;
  114. size=0.06f;
  115.    glBegin(GL_QUADS);
  116.     glTexCoord2f(0,0);
  117. glVertex3f(sx*offset-size,sy*offset-size,-1.03923f);
  119.      glTexCoord2f(1,0);
  120. glVertex3f(sx*offset+size,sy*offset-size,-1.03923f);
  122.     glTexCoord2f(1,1);
  123. glVertex3f(sx*offset+size,sy*offset+size,-1.03923f);
  125.     glTexCoord2f(0,1);
  126. glVertex3f(sx*offset-size,sy*offset+size,-1.03923f);
  127.     glEnd();
  128.     /////////////////////5
  129. glBindTexture(GL_TEXTURE_2D, m_texFlare[5]);
  130. glColor3f(0.3f,0.05f,0.0f);
  131.  
  132. offset=-0.3f;
  133. size=0.12f;
  134.    glBegin(GL_QUADS);
  135.     glTexCoord2f(0,0);
  136. glVertex3f(sx*offset-size,sy*offset-size,-1.03923f);
  138.      glTexCoord2f(1,0);
  139. glVertex3f(sx*offset+size,sy*offset-size,-1.03923f);
  141.     glTexCoord2f(1,1);
  142. glVertex3f(sx*offset+size,sy*offset+size,-1.03923f);
  144.     glTexCoord2f(0,1);
  145. glVertex3f(sx*offset-size,sy*offset+size,-1.03923f);
  146.     glEnd();
  147.     /////////////////////6
  148. glBindTexture(GL_TEXTURE_2D, m_texFlare[6]);
  149. glColor3f(0.3f,0.0f,0.0f);
  150.  
  151. offset=-0.9f;
  152. size=0.14f;
  153.    glBegin(GL_QUADS);
  154.     glTexCoord2f(0,0);
  155. glVertex3f(sx*offset-size,sy*offset-size,-1.03923f);
  157.      glTexCoord2f(1,0);
  158. glVertex3f(sx*offset+size,sy*offset-size,-1.03923f);
  160.     glTexCoord2f(1,1);
  161. glVertex3f(sx*offset+size,sy*offset+size,-1.03923f);
  163.     glTexCoord2f(0,1);
  164. glVertex3f(sx*offset-size,sy*offset+size,-1.03923f);
  165.     glEnd();
  166. ////////////////////////////////////////////////
  167. /////////////////////Draw light Shine
  169. glBindTexture(GL_TEXTURE_2D, m_texFlare[0]);
  170. glTranslatef(sx,sy,0);
  171. float dist=float(sqrt(sx*sx+sy*sy));
  173.     glRotatef((m_cHmap.m_ViewRotY+m_cHmap.m_ViewRotX)*2,  0.0f,0.0f,1.0f);
  174. glColor3f(0.7f-dist*0.2f,0.5f-dist*0.5f,0.4f-dist*0.6f);
  176.     glColor3f(0.8f+dist*0.5f,0.6f-dist*0.4f,0.2f);//0.3f-dist*0.4f);
  178. size=0.17f-dist*0.04f;
  179.    glBegin(GL_QUADS);
  180.     glTexCoord2f(0,0);
  181. glVertex3f(-size,-size,-1.03923f);
  183.      glTexCoord2f(1,0);
  184. glVertex3f(+size,-size,-1.03923f);
  186.     glTexCoord2f(1,1);
  187. glVertex3f(+size,+size,-1.03923f);
  189.     glTexCoord2f(0,1);
  190. glVertex3f(-size,+size,-1.03923f);
  191.     glEnd();
  192. ////////////////////////////////////////////////
  193. glColor3f(1,1,1);
  194. glPopMatrix();
  195. glDisable(GL_BLEND);
  196. glDisable(GL_ALPHA_TEST);
  197. glEnable(GL_DEPTH_TEST);
  199. }
  200. bool CLensFlare::CheckLightVisible()
  201. {
  202. VERTEX v0=VERTEX(m_LightPos.xpos-m_cHmap.m_ViewPos.xpos,
  203.              m_LightPos.ypos-m_cHmap.m_ViewPos.ypos,
  204.  m_LightPos.zpos-m_cHmap.m_ViewPos.zpos);
  205. float rotx=m_cHmap.m_ViewRotX;
  206. float roty=m_cHmap.m_ViewRotY;
  207. //////// y rotate
  208.     VERTEX v1=VERTEX(v0.xpos*cosf(roty*0.0174533f)-
  209.              v0.zpos*sinf(roty*0.0174533f),
  210.          v0.ypos,
  211.                      v0.xpos*sinf(roty*0.0174533f)+
  212.              v0.zpos*cosf(roty*0.0174533f));
  214.     //////// x rotate
  215.     VERTEX v2=VERTEX(v1.xpos,
  216.              v1.ypos*cosf(rotx*0.0174533f)-
  217.              v1.zpos*sinf(rotx*0.0174533f),
  218.                      v1.ypos*sinf(rotx*0.0174533f)+
  219.              v1.zpos*cosf(rotx*0.0174533f));
  221. ////////////////////
  222. if(v2.zpos>-1)return false;
  223. double scale=-1.03923/v2.zpos;
  224. sx=float(v2.xpos*scale);
  225. sy=float(v2.ypos*scale);
  226. if(sx>0.8f || sx<-0.8f)return false;
  227. if(sy>0.6f || sy<-0.6f)return false;
  229. //////// Check Visible
  230. int halfScrW=CGameSetting::m_iScrWidth/2;
  231. int halfScrH=CGameSetting::m_iScrHeight/2;
  232. float depth[4];
  234. glReadPixels(int(sx*500)+halfScrW,halfScrH+int(sy*500),1,1,GL_DEPTH_COMPONENT,GL_FLOAT,depth);
  235.     if(depth[0]>0.9999f)return true;
  236. glReadPixels(int(sx*500)+halfScrW+5,halfScrH+int(sy*500)+5,1,1,GL_DEPTH_COMPONENT,GL_FLOAT,depth);
  237.     if(depth[0]>0.9999f)return true;
  238. glReadPixels(int(sx*500)+halfScrW+5,halfScrH+int(sy*500)-5,1,1,GL_DEPTH_COMPONENT,GL_FLOAT,depth);
  239.     if(depth[0]>0.9999f)return true;
  240. glReadPixels(int(sx*500)+halfScrW-5,halfScrH+int(sy*500)+5,1,1,GL_DEPTH_COMPONENT,GL_FLOAT,depth);
  241.     if(depth[0]>0.9999f)return true;
  242. glReadPixels(int(sx*500)+halfScrW-5,halfScrH+int(sy*500)-5,1,1,GL_DEPTH_COMPONENT,GL_FLOAT,depth);
  243.     if(depth[0]>0.9999f)return true;
  244. glReadPixels(int(sx*500)+halfScrW+10,halfScrH+int(sy*500),1,1,GL_DEPTH_COMPONENT,GL_FLOAT,depth);
  245.     if(depth[0]>0.9999f)return true;
  246. glReadPixels(int(sx*500)+halfScrW-10,halfScrH+int(sy*500),1,1,GL_DEPTH_COMPONENT,GL_FLOAT,depth);
  247.     if(depth[0]>0.9999f)return true;
  248. glReadPixels(int(sx*500)+halfScrW,halfScrH+int(sy*500)+10,1,1,GL_DEPTH_COMPONENT,GL_FLOAT,depth);
  249.     if(depth[0]>0.9999f)return true;
  250. glReadPixels(int(sx*500)+halfScrW,halfScrH+int(sy*500)-10,1,1,GL_DEPTH_COMPONENT,GL_FLOAT,depth);
  251.     if(depth[0]>0.9999f)return true;
  252.  
  253.     return false;
  254. }