public static Texture2D SetPixelsForChannel(Texture2D texture, float[] pixels, WpColorChannels channel)
{
Color[] srcPixels = texture.GetPixels();
for (int i = 0; i < texture.width * texture.height; i++)
{
switch (channel)
{
default:
srcPixels[i].r = pixels[i];
break;
case WpColorChannels.G:
srcPixels[i].g = pixels[i];
break;
case WpColorChannels.B:
srcPixels[i].b = pixels[i];
break;
case WpColorChannels.A:
srcPixels[i].a = pixels[i];
break;
}
}
Texture2D resultTexture = texture;
resultTexture.SetPixels(srcPixels);
resultTexture.Apply();
return(resultTexture);
}
public WpGrayscaleImage(Texture2D texture, WpColorChannels channel)
{
Width = texture.width;
Height = texture.height;
m_Pixels = new byte[Width * Height];
Color[] srcPixels = texture.GetPixels();
for (int i = 0; i < Width * Height; i++)
{
switch (channel)
{
default:
m_Pixels[i] = (byte)(srcPixels[i].r * 255.0f);
break;
case WpColorChannels.G:
m_Pixels[i] = (byte)(srcPixels[i].g * 255.0f);
break;
case WpColorChannels.B:
m_Pixels[i] = (byte)(srcPixels[i].b * 255.0f);
break;
case WpColorChannels.A:
m_Pixels[i] = (byte)(srcPixels[i].a * 255.0f);
break;
}
}
}
public static Texture2D FillChannelWithValue(Texture2D texture, WpColorChannels channel, float value)
{
Color[] srcPixels = texture.GetPixels();
for (int i = 0; i < texture.width * texture.height; i++)
{
switch (channel)
{
case WpColorChannels.R:
srcPixels[i].r = value;
break;
case WpColorChannels.G:
srcPixels[i].g = value;
break;
case WpColorChannels.B:
srcPixels[i].b = value;
break;
default:
srcPixels[i].a = value;
break;
case WpColorChannels.Rgb:
srcPixels[i].r = value;
srcPixels[i].g = value;
srcPixels[i].b = value;
break;
}
}
Texture2D resultsTexture = new Texture2D(texture.width, texture.height, texture.format, false);
resultsTexture.SetPixels(srcPixels);
resultsTexture.Apply();
return(resultsTexture);
}
public static Vector2 CalculateGeometricalCenter(Texture2D texture, Color lookupColor, float tolerance,
WpColorChannels channel)
{
int totalX = 0, totalY = 0, totalPoints = 0;
Color[] srcPixels = texture.GetPixels();
for (int x = 0; x < texture.width; x++)
{
for (int y = 0; y < texture.height; y++)
{
Color pixelColor = srcPixels[y * texture.width + x];
switch (channel)
{
case WpColorChannels.R:
if (Mathf.Abs(pixelColor.r - lookupColor.r) <= tolerance)
{
totalX += x;
totalY += y;
totalPoints++;
}
break;
case WpColorChannels.G:
if (Mathf.Abs(pixelColor.g - lookupColor.g) <= tolerance)
{
totalX += x;
totalY += y;
totalPoints++;
}
break;
case WpColorChannels.B:
if (Mathf.Abs(pixelColor.b - lookupColor.b) <= tolerance)
{
totalX += x;
totalY += y;
totalPoints++;
}
break;
default:
if (Mathf.Abs(pixelColor.a - lookupColor.a) <= tolerance)
{
totalX += x;
totalY += y;
totalPoints++;
}
break;
case WpColorChannels.Rgb:
if (Mathf.Abs(pixelColor.r - lookupColor.r) <= tolerance &&
Mathf.Abs(pixelColor.g - lookupColor.g) <= tolerance &&
Mathf.Abs(pixelColor.b - lookupColor.b) <= tolerance)
{
totalX += x;
totalY += y;
totalPoints++;
}
break;
}
}
}
if (totalPoints <= 0)
{
return(new Vector2(texture.width / 2f, texture.height / 2f));
}
totalX /= totalPoints;
totalY /= totalPoints;
Debug.Log("Found geometrical center at" + DimensionsString(totalX, totalY));
return(new Vector2(totalX, totalY));
}
