Ogiror 中 Hydrax 插件的使用

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http://ogre3d.blogbus.com/logs/78454138.html

最近因为工作原因研究了下Hydrax插件,这个插件非常不错，效果非常的好，可惜的就是效率不高，鸡肋！不过在游戏中这种大场景的水毕竟不是每个场景都存在，所以只要效率过得去就还算是可以的。将工作写成日志记录我的工作。

Hydrax 插件的引导

pElement = XMLNode ->first_node ("water" ); // 先通过XML 读取HYDRAX 插件是否存在

if (pElement )

processHydrax (pElement );

mHydraxHandle = new Hydrax ::Hydrax (scenemgr , camera , mviewport );

mHydraxModule = new Hydrax ::Module ::ProjectedGrid (// Hydrax parent pointer

mHydraxHandle ,

// Noise module

new Hydrax ::Noise ::Perlin (/*Generic one*/ ),

// Base plane

Ogre ::Plane (Ogre ::Vector3 (0,1,0), Ogre ::Vector3 (0,0,0)),

// Normal mode

Hydrax ::MaterialManager ::NM_RTT ,// NM_VERTEX, NM_RTT // 顶点模式

// Projected grid options

Hydrax ::Module ::ProjectedGrid ::Options (60));

//lee 读取水配置文件

mHydraxHandle ->loadCfg (XMLfilename );

// Create water

mHydraxHandle ->create ();

void DotSceneLoader::UpdataHydrax(float timePassed)
{
if (mHydraxHandle)
{
  Ogre::Vector3 col = mHydraxHandle->getWaterColor();
  Ogre::Vector3 original = col;

float height = mHydraxHandle->getSunPosition().y / 10.0f;

  if(height < -99.0f)
  {
   col = original * 0.1f;
   height = 9999.0f;
  }
  else if(height < 1.0f)
  {
   col = original * (0.1f + (0.009f * (height + 99.0f)));
   height = 100.0f / (height + 99.001f);
  }
  else if(height < 2.0f)
  {
   col += original;
   col /= 2.0f;
   float percent = (height - 1.0f);
   col = (col * percent) + (original * (1.0f - percent));
  }
  else
  {
   col += original;
   col /= 2.0f;
  }
  mHydraxHandle->setWaterColor(col);// 设置水颜色
  mHydraxHandle->setSunArea(height);//根据水波实现太阳在水面上的效果

mHydraxHandle->update(timePassed);//实时更新
}
}