ColorRasterSource.cpp

#include "ColorRasterSource.h"
 
#include "Foundation/Logging/Logger.h"
 
namespace {
  Cogs::Logging::Log logger = Cogs::Logging::getLogger("FloatRasterSource");
}
 
Cogs::Core::TerrainProvider::ColorRasterSource::~ColorRasterSource()
{
 
}
 
bool Cogs::Core::TerrainProvider::ColorRasterSource::init(const ColorConfig& conf, std::unique_ptr<ICache>&& icache)
{
  colors = conf.colors;
  if (colors.size() == 0) {
    LOG_ERROR(logger, "No colors defined");
    return false;
  }
 
  BaseConfig base = conf;
  if (base.textureFormat == Cogs::TextureFormat::Unknown) {
    base.textureFormat = Cogs::TextureFormat::R8G8B8A8_UNORM_SRGB;
  }
  else if (base.textureFormat != Cogs::TextureFormat::R8G8B8A8_UNORM_SRGB && base.textureFormat != Cogs::TextureFormat::R8G8B8A8_UNORM) {
    LOG_ERROR(logger, "Illegal texture format");
    return false;
  }
  return BaseRasterSource::init(base, std::move(icache));
}
 
void Cogs::Core::TerrainProvider::ColorRasterSource::getConfig(ColorConfig& conf) const
{
  BaseRasterSource::getConfig(conf);
  conf.colors = colors;
}
 
void Cogs::Core::TerrainProvider::ColorRasterSource::requestTile(Request* req)
{
  size_t N = size_t(tiling.width) * size_t(tiling.height);
  Cogs::Memory::MemoryBuffer contents(N * sizeof(uint32_t));
 
  assert(colors.size() != 0);
  //assert(req->id.level == 0);
  auto l = std::min(size_t(req->id.level), colors.size() - 1);
  uint8_t color[4] = {
    uint8_t(255.0 * colors[l].r),
    uint8_t(255.0 * colors[l].g),
    uint8_t(255.0 * colors[l].b),
    uint8_t(255.0 * colors[l].a)
  };
  auto* ptr = static_cast<uint8_t*>(contents.data());
  for (size_t i = 0; i < N; i++) {
    for (size_t k = 0; k < 4; k++) {
      ptr[4 * i + k] = color[k];
    }
  }
  addTile(contents, MimeType::RGBA8, req, StringView());
}