public void GetChannels(float x, float[] v, int m = 0)
{
int W = Data.GetWidth(m);
x *= (W - 1);
if (Interpolation == TEXTURE_INTERPOLATION.BILINEAR)
{
BilinearIndex ix = NewBilinearIndex(x, W);
for (int c = 0; c < Data.Channels; c++)
{
v[c] = GetBilinear(ix, c, m);
}
}
else if (Interpolation == TEXTURE_INTERPOLATION.BICUBIC)
{
BicubicIndex ix = NewBicubicIndex(x, W);
for (int c = 0; c < Data.Channels; c++)
{
v[c] = GetBicubic(ix, c, m);
}
}
else
{
GetChannels((int)x, v, m);
}
}
public float GetChannel(float x, int c, int m = 0)
{
if (c >= Data.Channels)
{
return(0);
}
int W = Data.GetWidth(m);
x *= (W - 1);
if (Interpolation == TEXTURE_INTERPOLATION.BILINEAR)
{
BilinearIndex ix = NewBilinearIndex(x, W);
return(GetBilinear(ix, c, m));
}
else if (Interpolation == TEXTURE_INTERPOLATION.BICUBIC)
{
BicubicIndex ix = NewBicubicIndex(x, W);
return(GetBicubic(ix, c, m));
}
else
{
return(GetChannel((int)x, c, m));
}
}
public void GetChannels(float x, float y, float[] v, int m = 0)
{
int W = GetWidth(m);
int H = GetHeight(m);
x *= (W - 1);
y *= (H - 1);
if (Interpolation == TEXTURE_INTERPOLATION.BILINEAR)
{
BilinearIndex ix = NewBilinearIndex(x, W);
BilinearIndex iy = NewBilinearIndex(y, H);
for (int c = 0; c < Channels; c++)
{
v[c] = GetBilinear(ix, iy, c, m);
}
}
else if (Interpolation == TEXTURE_INTERPOLATION.BICUBIC)
{
BicubicIndex ix = NewBicubicIndex(x, W);
BicubicIndex iy = NewBicubicIndex(y, H);
for (int c = 0; c < Channels; c++)
{
v[c] = GetBicubic(ix, iy, c, m);
}
}
else
{
GetChannels((int)x, (int)y, v, m);
}
}
public float GetChannel(float x, float y, int c, int m = 0)
{
if (c >= Channels)
{
return(0);
}
int W = GetWidth(m);
int H = GetHeight(m);
x *= (W - 1);
y *= (H - 1);
if (Interpolation == TEXTURE_INTERPOLATION.BILINEAR)
{
BilinearIndex ix = NewBilinearIndex(x, W);
BilinearIndex iy = NewBilinearIndex(y, H);
return(GetBilinear(ix, iy, c, m));
}
else if (Interpolation == TEXTURE_INTERPOLATION.BICUBIC)
{
BicubicIndex ix = NewBicubicIndex(x, W);
BicubicIndex iy = NewBicubicIndex(y, H);
return(GetBicubic(ix, iy, c, m));
}
else
{
return(GetChannel((int)x, (int)y, c, m));
}
}
private float GetBicubic(BicubicIndex x, BicubicIndex y, int c, int m)
{
float fx, fy, v0, v1, v2, v3;
fx = x.fi;
fy = y.fi;
v0 = Data[x.i0, y.i0, c, m];
v1 = Data[x.i1, y.i0, c, m];
v2 = Data[x.i2, y.i0, c, m];
v3 = Data[x.i3, y.i0, c, m];
float v00 = Bicubic(fx, v0, v1, v2, v3);
v0 = Data[x.i0, y.i1, c, m];
v1 = Data[x.i1, y.i1, c, m];
v2 = Data[x.i2, y.i1, c, m];
v3 = Data[x.i3, y.i1, c, m];
float v01 = Bicubic(fx, v0, v1, v2, v3);
v0 = Data[x.i0, y.i2, c, m];
v1 = Data[x.i1, y.i2, c, m];
v2 = Data[x.i2, y.i2, c, m];
v3 = Data[x.i3, y.i2, c, m];
float v02 = Bicubic(fx, v0, v1, v2, v3);
v0 = Data[x.i0, y.i3, c, m];
v1 = Data[x.i1, y.i3, c, m];
v2 = Data[x.i2, y.i3, c, m];
v3 = Data[x.i3, y.i3, c, m];
float v03 = Bicubic(fx, v0, v1, v2, v3);
return(Bicubic(fy, v00, v01, v02, v03));
}
public ColorRGBA GetPixel(float x, float y, int m = 0)
{
int W = GetWidth(m);
int H = GetHeight(m);
x *= (W - 1);
y *= (H - 1);
ColorRGBA pixel = new ColorRGBA();
if (Interpolation == TEXTURE_INTERPOLATION.BILINEAR)
{
BilinearIndex ix = NewBilinearIndex(x, W);
BilinearIndex iy = NewBilinearIndex(y, H);
int channels = Channels;
if (channels > 0)
{
pixel.r = GetBilinear(ix, iy, 0, m);
}
if (channels > 1)
{
pixel.g = GetBilinear(ix, iy, 1, m);
}
if (channels > 2)
{
pixel.b = GetBilinear(ix, iy, 2, m);
}
if (channels > 3)
{
pixel.a = GetBilinear(ix, iy, 3, m);
}
}
else if (Interpolation == TEXTURE_INTERPOLATION.BICUBIC)
{
BicubicIndex ix = NewBicubicIndex(x, W);
BicubicIndex iy = NewBicubicIndex(y, H);
int channels = Channels;
if (channels > 0)
{
pixel.r = GetBicubic(ix, iy, 0, m);
}
if (channels > 1)
{
pixel.g = GetBicubic(ix, iy, 1, m);
}
if (channels > 2)
{
pixel.b = GetBicubic(ix, iy, 2, m);
}
if (channels > 3)
{
pixel.a = GetBicubic(ix, iy, 3, m);
}
}
else
{
pixel = GetPixel((int)x, (int)y, m);
}
return(pixel);
}
