public static Vector4 SampleBilinear(float u, float v, AsyncTextureUnsafe <Color32> texture)
{
u = (u % 1f);
v = (v % 1f);
u = u * (texture.Width - 1) - 0.5f;
v = v * (texture.Height - 1) - 0.5f;
if (u < 0f)
{
u += (texture.Width - 1);
}
if (v < 0f)
{
v += (texture.Height - 1);
}
int x = Mathf.FloorToInt(u);
int y = Mathf.FloorToInt(v);
float uRatio = u - x;
float vRatio = v - y;
float uOpposite = 1 - uRatio;
float vOpposite = 1 - vRatio;
return((Color)texture.Raw[x + y * texture.Width] * uOpposite +
(Color)texture.Raw[x + 1 + y * texture.Width] * uRatio +
(Color)texture.Raw[x + (y + 1) * texture.Width] * vOpposite +
(Color)texture.Raw[x + 1 + (y + 1) * texture.Width] * vRatio);
}
public static Color32 SamplePoint(float u, float v, AsyncTextureUnsafe <Color32> texture)
{
u = Mathf.Clamp01(u);
v = Mathf.Clamp01(v);
int x = Mathf.FloorToInt(u * (texture.Width - 1));
int y = Mathf.FloorToInt(v * (texture.Height - 1));
return(texture.Raw[x + y * texture.Width]);
}