void Texture::setHgtMap(IMesh *mesh, std::string filename, float height)
{
int mapWidth, mapHeight;
long *data = FileBmp::loadBmp(filename, mapWidth, mapHeight);
float r = (float) 1 / 255;
Vector *v = mesh->getVertices();
for (int i = 0; i < mesh->mVertCnt; i++)
{
int x = map_linear(v[i].x, mesh->mMin.x, mesh->mMax.x, mapWidth - 1, 0);
int y = map_linear(v[i].z, mesh->mMin.z, mesh->mMax.z, 0, mapHeight - 1);
long c = data[y * mapWidth + x];
v[i].y = getR(c) * r * height;
mesh->setVertex(i, v[i].x, v[i].y, v[i].z);
}
delete []data;
}
/**
* IMPORTANT: This function sets the value for g_tw_nlp which is a rather
* important global variable. It is also set in (very few) other places,
* but mainly just here.
*/
void
tw_define_lps(tw_lpid nlp, size_t msg_sz, tw_seed * seed)
{
int i;
g_tw_nlp = nlp;
#ifdef ROSS_MEMORY
g_tw_memory_sz = sizeof(tw_memory);
#endif
g_tw_msg_sz = msg_sz;
g_tw_rng_seed = seed;
early_sanity_check();
/*
* Construct the KP array.
*/
if( g_tw_nkp == 1 ) // if it is the default, then check with the overide param
g_tw_nkp = nkp_per_pe * g_tw_npe;
// else assume the application overloaded and has BRAINS to set its own g_tw_nkp
g_tw_kp = (tw_kp **)tw_calloc(TW_LOC, "KPs", sizeof(*g_tw_kp), g_tw_nkp);
/*
* Construct the LP array.
*/
g_tw_lp = (tw_lp **)tw_calloc(TW_LOC, "LPs", sizeof(*g_tw_lp), g_tw_nlp);
switch(g_tw_mapping)
{
case LINEAR:
map_linear();
break;
case ROUND_ROBIN:
map_round_robin();
break;
case CUSTOM:
if( g_tw_custom_initial_mapping )
{
g_tw_custom_initial_mapping();
}
else
{
tw_error(TW_LOC, "CUSTOM mapping flag set but not custom mapping function! \n");
}
break;
default:
tw_error(TW_LOC, "Bad value for g_tw_mapping %d \n", g_tw_mapping);
}
// init LP RNG stream(s)
for(i = 0; i < g_tw_nlp; i++)
if(g_tw_rng_default == TW_TRUE)
tw_rand_init_streams(g_tw_lp[i], g_tw_nRNG_per_lp);
}
