private void validateTileSizeForDimensions(HffHeader header)
{
if (header.width % header.tileSize != 0 || header.height % header.tileSize != 0)
{
throw new Exception("Map dimensions do not fit the tilesize");
}
}
private float readValueFromReader(EndianBinaryReader reader, HffHeader header, uint xLocation, uint yLocation)
{
float value;
if (header.floatingPointFlag)
{
float readSingleValue = reader.ReadSingle();
debugLine("v: " + readSingleValue);
value = header.verticalScale * readSingleValue + header.verticalOffset;
debugLine("cv: " + value);
}
else
{
switch (header.dataSize)
{
case 1:
sbyte readSbyteValue = reader.ReadSByte();
debugLine("v: " + readSbyteValue);
value = header.verticalScale * readSbyteValue + header.verticalOffset;
debugLine("cv: " + value);
break;
case 2:
ushort readShortValue = reader.ReadUInt16();
debugLine("v: " + readShortValue);
value = header.verticalScale * readShortValue + header.verticalOffset;
debugLine("cv: " + value);
break;
default: throw new Exception("Invalid pixel data at x: " + xLocation + ", y: " + yLocation);
}
}
return value;
}
private void readTile(int x, int y, HffHeader header, EndianBinaryReader reader, HffFile file)
{
for (int j = 1; j <= header.tileSize; j++)
{
for (int i = 1; i <= header.tileSize; i++)
{
uint xLocation = (uint)((x * header.tileSize) + i);
uint yLocation = (uint)((y * header.tileSize) + j);
float value = readValueFromReader(reader, header, xLocation, yLocation);
file.addPixel(new HffPixelInfo(xLocation, yLocation, value));
}
}
}
private void readTiledData(EndianBinaryReader reader, HffHeader header, HffFile file)
{
validateTileSizeForDimensions(header);
uint horizontalTiles = header.width / header.tileSize;
uint verticalTiles = header.height / header.tileSize;
for (int y = 0; y < verticalTiles; y++)
{
for (int x = 0; x < horizontalTiles; x++)
{
readTile(x, y, header, reader, file);
}
}
}
private void readConventionalData(EndianBinaryReader reader, HffHeader header, HffFile file)
{
uint totalPixels = header.width * header.height;
uint xLocation = 1;
uint yLocation = 1;
for (int i = 0; i < totalPixels; i++)
{
float value = readValueFromReader(reader, header, xLocation, yLocation);
file.addPixel(new HffPixelInfo(xLocation, yLocation, value));
xLocation++;
if (xLocation > header.width)
{
xLocation = 1;
yLocation++;
}
}
debugLine("pixel count: " + file.pixels.Count());
}
