void copyNoiseToHeightmap(Perlin& pn, RECT rc, HeightMap<T>* pHMap, int tMax)
{
int x,y;
float xStep = 1.0f/(rc.right-rc.left);
float yStep = 1.0f/(rc.bottom-rc.top);
//Perlin产生的值域在[-振幅,+振幅]之间
//--缩放到0-255的区间
float offset = pn.GetAmplitude();
float range = pn.GetAmplitude()*2;
for(y=rc.top; y<rc.bottom; y++)
{
for(x=rc.left; x<rc.right; x++)
{
float n = pn.Get(x*xStep, y*yStep);
T tn = T((n+offset)/range*tMax);
pHMap->setValue(x, y, tn);
}
}//endof for
}
