void CEnvironmentGrid::PaintMap (CMapViewportCtx &Ctx, CG16bitImage &Dest)
// PaintMap
//
// Paint the environment on the map
{
int cxHalfTileCount = m_iTileCount / 2;
int cyHalfTileCount = m_iTileCount / 2;
// Compute the size of each tile.
int cxOrigin;
int cyOrigin;
Ctx.Transform(Ctx.GetCenterPos(), &cxOrigin, &cyOrigin);
int cxTile;
int cyTile;
CVector vTile(m_iTileSize * g_KlicksPerPixel, m_iTileSize * g_KlicksPerPixel);
Ctx.Transform(Ctx.GetCenterPos() + vTile, &cxTile, &cyTile);
// +1 because the floating-point conversion is sometimes off.
cxTile = AlignUp(Absolute(cxTile - cxOrigin), 2) + 1;
cyTile = AlignUp(Absolute(cyTile - cyOrigin), 2) + 1;
int cxHalfTile = cxTile / 2;
int cyHalfTile = cyTile / 2;
// Paint all tiles
STileMapEnumerator k;
while (HasMoreTiles(k))
{
// Get the tile
int xTile;
int yTile;
CSpaceEnvironmentType *pEnv;
DWORD dwEdgeMask;
GetNextTileType(k, &xTile, &yTile, &pEnv, &dwEdgeMask);
if (pEnv == NULL)
continue;
// Get the position of the tile
CVector vPos = TileToVector(xTile, yTile);
// Fade out based on distance
int iDist = Max(Absolute(xTile - cxHalfTileCount), Absolute(yTile - cyHalfTileCount));
DWORD dwFade = (iDist > 5 ? Min(8 * (iDist - 5), 0xC0) : 0);
// Transform to map coords
int x;
int y;
Ctx.Transform(vPos, &x, &y);
// Paint the tile
pEnv->PaintMap(Dest, x, y, cxTile, cyTile, dwFade, dwEdgeMask);
}
}
