public InfiniteLight(RgbSpectrumTexture tx)
{
tex = tx;
shiftU = 0f;
shiftV = 0f;
gain = new RgbSpectrum(1.0f);
}
public ImportanceSampledInfiniteLight(RgbSpectrumTexture tx, RgbSpectrumTexture tx_l)
{
Sampler = new LatLongMap(tx, tx_l);
shiftU = 0f;
shiftV = 0f;
gain = GlobalConfiguration.Instance.SpectralRendering ? RgbSpectrum.UnitSpectrum() : new RgbSpectrum(0.1f);
}
public CubeMap(string up, string down, string left, string right, string fwd, string back)
{
Top = LoadTexture(up);
Left = LoadTexture(left);
Right = LoadTexture(right);
Bottom = LoadTexture(down);
Forward = LoadTexture(fwd);
Backward = LoadTexture(back);
}
public static RgbSpectrumTexture FreeImageLoadExrBitmap(string fileName)
{
Console.WriteLine("..Loading hdr bitmap {0}", fileName);
using (var bmp = new FreeImageBitmap(fileName))
{
//bmp.AdjustGamma(2.2);
var pdata = new RgbSpectrumInfo[bmp.Width * bmp.Height];
for (int i = 0; i < bmp.Height; i++)
{
Scanline<FIRGBF> s = bmp.GetScanline<FIRGBF>(i);
for (int j = 0; j < bmp.Width; j++)
{
pdata[j + i * bmp.Width] = new RgbSpectrumInfo(s[j].red, s[j].green, s[j].blue);
//pdata[j + i * bmp.Width] .DeGamma();
}
}
Console.WriteLine("... Converted size {0:F5} MBytes", (bmp.Width * bmp.Height * 12.0f) / (1024f * 1024f));
MemoryOccupied += (ulong)(bmp.Width * bmp.Height * 12u);
var tex = new RgbSpectrumTexture(fileName, pdata, bmp.Width, bmp.Height);
return tex;
}
}
public static RgbSpectrumTexture FreeImageLoadBitmap(string fileName)
{
Console.WriteLine("..Loading ldr bitmap {0}", fileName);
using (var bmp = new FreeImageBitmap(fileName))
{
//bmp.AdjustGamma(2.2);
var pdata = new RgbSpectrumInfo[bmp.Width * bmp.Height];
for (int i = 0; i < bmp.Height; i++)
{
if (bmp.ColorDepth == 24)
{
Scanline<RGBTRIPLE> s = bmp.GetScanline<RGBTRIPLE>(i);
for (int j = 0; j < bmp.Width; j++)
{
pdata[j + i * bmp.Width] =
RgbSpectrumInfo.Create(s[j].rgbtRed, s[j].rgbtGreen, s[j].rgbtBlue, false).Abs();
}
}
if (bmp.ColorDepth == 32)
{
Scanline<RGBQUAD> s = bmp.GetScanline<RGBQUAD>(i);
for (int j = 0; j < bmp.Width; j++)
{
pdata[j + i * bmp.Width] =
RgbSpectrumInfo.Create(s[j].rgbRed, s[j].rgbGreen, s[j].rgbBlue, false).Abs();
}
}
if (bmp.ColorDepth == 8)
{
Scanline<byte> s = bmp.GetScanline<byte>(i);
for (int j = 0; j < bmp.Width; j++)
{
pdata[j + i * bmp.Width] =
RgbSpectrumInfo.Create(bmp.Palette[s[j]].rgbRed, bmp.Palette[s[j]].rgbGreen, bmp.Palette[s[j]].rgbBlue, false).Abs();
}
}
}
Console.WriteLine("... Converted size {0:F5} MBytes", (bmp.Width * bmp.Height * 12.0f) / (1024f * 1024f));
MemoryOccupied += (ulong)(bmp.Width * bmp.Height * 12u);
var tex = new RgbSpectrumTexture(fileName, pdata, bmp.Width, bmp.Height);
return tex;
}
}
public BasicInfiniteLight(RgbSpectrumTexture tx, RgbSpectrumTexture tx_l, LightMaterial mt) : base(mt)
{
Sampler = new LatLongMap(tx, tx_l);
}
private void Sample(RgbSpectrumTexture t, ref Vector dir, out RgbSpectrumInfo outputColor)
{
float shiftU = 0f, shiftV = 0f;
float theta = Vector.SphericalTheta(ref dir);
outputColor = t.Sample(Vector.SphericalPhi(ref dir) * MathLab.INVTWOPI + shiftU, theta * MathLab.INVPI + shiftV);
}
public LatLongMap(RgbSpectrumTexture tex, RgbSpectrumTexture ltex)
{
this.tex = tex;
this.lightMap = ltex;
}
public LatLongMap(RgbSpectrumTexture tex)
{
this.tex = tex;
}
public LatLongMap(string path)
{
tex = LoadTexture(path);
}