public static Texture2D BlendMono(Texture2D a, Texture2D b, int mode)
{
IntPairClass resA = new IntPairClass(a);
IntPairClass resB = new IntPairClass(b);
IntPairClass res = new IntPairClass();
res.SetFromMinimum(resA, resB);
Color[] originalColorsA = a.GetPixels(0, 0, res.value01, res.value02);
Color[] originalColorsB = b.GetPixels(0, 0, res.value01, res.value02);
Color[] resultColors = new Color[originalColorsA.Length];
for (int i = 0; i < resultColors.Length; i++)
{
float aValue = originalColorsA[i].a;
float bValue = originalColorsB[i].a;
Color r = new Color();
if (mode == 0 || mode == 1)
{
r = new Color(1f, 1f, 1f, aValue);
}
else if(mode == 2)
{
r = new Color(1f, 1f, 1f, aValue * bValue);
}
resultColors[i] = r;
}
Texture2D toReturn = new Texture2D(a.width, a.height, TextureFormat.Alpha8, true);
toReturn.SetPixels(0, 0, a.width, a.height, resultColors);
toReturn.Apply(true);
return toReturn;
}
//0 - A over B, 1 - B over A, 2 - Multiply
public static Texture2D Blend(Texture2D a, Texture2D b, int mode)
{
IntPairClass resA = new IntPairClass(a);
IntPairClass resB = new IntPairClass(b);
IntPairClass res = new IntPairClass();
res.SetFromMinimum(resA, resB);
Color[] originalColorsA = a.GetPixels(0, 0, res.value01, res.value02);
Color[] originalColorsB = b.GetPixels(0, 0, res.value01, res.value02);
Color[] resultColors = new Color[originalColorsA.Length];
for(int i = 0; i < resultColors.Length; i++)
{
Color aColor = originalColorsA[i];
Color bColor = originalColorsB[i];
Color r = new Color();
if(mode == 0 || mode == 1)
{
float restForB = GetMin(bColor.a, 1 - aColor.a);
r = new Color(GetMiddleValue(aColor.r, bColor.r, aColor.a, restForB), GetMiddleValue(aColor.g, bColor.g, aColor.a, restForB), GetMiddleValue(aColor.b, bColor.b, aColor.a, restForB), aColor.a + restForB);
}
else if(mode == 2)
{
r = new Color(aColor.r * bColor.r, aColor.g * bColor.g, aColor.b * bColor.b, aColor.a * bColor.a);
}
resultColors[i] = r;
}
Texture2D toReturn = new Texture2D(a.width, a.height, TextureFormat.RGBA32, true);
toReturn.SetPixels(0, 0, a.width, a.height, resultColors);
toReturn.Apply(true);
return toReturn;
}
public override bool Calculate()
{
if (Inputs[0].connection != null && Inputs[1].connection != null && Inputs[2].connection != null && Inputs[3].connection != null)
{
rInput = Inputs[0].connection.GetValue<Texture2D>();
gInput = Inputs[1].connection.GetValue<Texture2D>();
bInput = Inputs[2].connection.GetValue<Texture2D>();
aInput = Inputs[3].connection.GetValue<Texture2D>();
if (rInput != null && gInput != null && bInput != null && aInput != null)
{
IntPairClass rRes = new IntPairClass(rInput);
IntPairClass gRes = new IntPairClass(gInput);
IntPairClass bRes = new IntPairClass(bInput);
IntPairClass aRes = new IntPairClass(aInput);
IntPairClass resolution = new IntPairClass();
resolution.SetFromMinimum(rRes, gRes, bRes, aRes);
resTexture = new Texture2D(resolution.value01, resolution.value02, TextureFormat.RGBA32, true);
Color[] rColors = rInput.GetPixels(0, 0, resolution.value01, resolution.value02);
Color[] gColors = gInput.GetPixels(0, 0, resolution.value01, resolution.value02);
Color[] bColors = bInput.GetPixels(0, 0, resolution.value01, resolution.value02);
Color[] aColors = aInput.GetPixels(0, 0, resolution.value01, resolution.value02);
Color[] resColors = new Color[rColors.Length];
for (int i = 0; i < resColors.Length; i++)
{
resColors[i] = new Color(rColors[i].a, gColors[i].a, bColors[i].a, aColors[i].a);
}
resTexture.SetPixels(0, 0, resolution.value01, resolution.value02, resColors);
resTexture.Apply(true);
Outputs[0].SetValue<Texture2D>(resTexture);
prevImage = ImageHelperClass.MakePreviewImage(resTexture);
prevStyle = ImageHelperClass.GetPreviewStyle();
}
}
return true;
}
public static Texture2D MakeReplaceAlpha(Texture2D image, Texture2D alpha)
{
Color[] originalColors = image.GetPixels(0, 0, image.width, image.height);
Color[] alphaColors = alpha.GetPixels(0, 0, alpha.width, alpha.height);
IntPairClass originalResolution = new IntPairClass(image);
IntPairClass alphaResolution = new IntPairClass(alpha);
IntPairClass res = new IntPairClass();
res.SetFromMinimum(originalResolution, alphaResolution);
Color[] contrastedColors = new Color[res.GetProduct()];
for (int i = 0; i < contrastedColors.Length; i++)
{
Color c = originalColors[i];
contrastedColors[i] = new Color(c.r, c.g, c.b, alphaColors[i].a);
}
Texture2D toReturn = new Texture2D(res.value01, res.value02, TextureFormat.RGBA32, true);
toReturn.SetPixels(0, 0, res.value01, res.value02, contrastedColors);
toReturn.Apply(true);
return toReturn;
}
