/// <summary>
/// Splits a Normal Gloss and Occlusion Map packed into 1 Image
/// </summary>
/// <param name="bitmapSource">Bitmap to split</param>
/// <param name="normalPath">Normal Output Path</param>
/// <param name="glossPath">Gloss Path</param>
/// <param name="occlusionPath">Occlusion Path</param>
public static void SplitNormalGlossOcclusion(BitmapX bitmapSource, string normalPath, string glossPath, string occlusionPath)
{
// Input and Output
using (bitmapSource)
using (BitmapX normalMap = new BitmapX(bitmapSource.Width, bitmapSource.Height))
using (BitmapX glossMap = new BitmapX(bitmapSource.Width, bitmapSource.Height))
using (BitmapX occlusionMap = new BitmapX(bitmapSource.Width, bitmapSource.Height))
{
// Loop X/Width
for (int x = 0; x < bitmapSource.Width; x++)
{
// Loop Y/Height
for (int y = 0; y < bitmapSource.Height; y++)
{
// Get Original Color
var color = bitmapSource.GetPixel(x, y);
// Set Values
var normalColor = Color.FromArgb(color.G, color.A, CalculateNormalMapZValue(color.G, color.A));
var glossColor = Color.FromArgb(color.R, color.R, color.R);
var occlusionColor = Color.FromArgb(color.B, color.B, color.B);
// Patch Pixels
normalMap.SetPixel(x, y, normalColor);
glossMap.SetPixel(x, y, glossColor);
occlusionMap.SetPixel(x, y, occlusionColor);
}
}
// Save Images
normalMap.Save(normalPath, false);
glossMap.Save(glossPath, false);
occlusionMap.Save(occlusionPath, false);
}
}
/// <summary>
/// Splits a Bitmap's RGB and Alpha Channel
/// </summary>
/// <param name="bitmapSource">Bitmap to split</param>
/// <param name="rgbOutput">RGB Output Path</param>
/// <param name="alphaOutput">Alpha Output</param>
public static void SplitColorAndAlphaChannel(BitmapX bitmapSource, string rgbOutput, string alphaOutput)
{
// Input and Output
using (bitmapSource)
using (BitmapX rgbMap = new BitmapX(bitmapSource.Width, bitmapSource.Height))
using (BitmapX alphaMap = new BitmapX(bitmapSource.Width, bitmapSource.Height))
{
// Loop X/Width
for (int x = 0; x < bitmapSource.Width; x++)
{
// Loop Y/Height
for (int y = 0; y < bitmapSource.Height; y++)
{
// Get Original Color
var color = bitmapSource.GetPixel(x, y);
// Set Values
var rgbColor = Color.FromArgb(color.R, color.G, color.B);
var alphaColor = Color.FromArgb(color.A, color.A, color.A);
// Patch Pixels
rgbMap.SetPixel(x, y, rgbColor);
alphaMap.SetPixel(x, y, alphaColor);
}
}
// Save Images
rgbMap.Save(rgbOutput, false);
alphaMap.Save(alphaOutput, false);
}
}
/// <summary>
/// Splits Specular and Albedo Maps by using a Metallic Mask
/// </summary>
/// <param name="albedoSource">Bitmap to split</param>
/// <param name="specularMaskSource">Bitmap to use as Specular Mask</param>
/// <param name="albedoOutput">Albedo Output Path</param>
/// <param name="specularOutput">Specular Output Path</param>
/// <param name="channel">Specular Mask Channel to use as a mask</param>
/// <param name="clampValue">Clamp Specular Values to this Value</param>
/// <param name="removeAlpha">Wehther to remove the Alpha Channel from the Color map</param>
public static void SplitSpecularAlbedo(BitmapX albedoSource, BitmapX specularMaskSource, string albedoOutput, string specularOutput, int channel = 0, int clampValue = 32, bool removeAlpha = false)
{
// Check Pixel Counts
if (albedoSource.PixelCount != specularMaskSource.PixelCount)
{
throw new ArgumentException("Albedo and Specular Mask have different pixel counts.");
}
// Input and Output
using (albedoSource)
using (specularMaskSource)
using (BitmapX albedoMap = new BitmapX(albedoSource.Width, albedoSource.Height))
using (BitmapX specularMap = new BitmapX(albedoSource.Width, albedoSource.Height))
{
// Loop X/Width
for (int x = 0; x < albedoSource.Width; x++)
{
// Loop Y/Height
for (int y = 0; y < albedoSource.Height; y++)
{
// Get Values
var albedoSourceColor = albedoSource.GetPixel(x, y);
var specularMaskSourceColor = specularMaskSource.GetPixel(x, y);
// Specular/Metallic value
double specularAmount = MathUtilities.Clamp(GetChannelByIndex(specularMaskSourceColor, channel) / 255.0, 1.0, 0.0);
// Color Map Value (if metalic will be black)
double colorAmount = 1 - specularAmount;
// Set Values
var specularColor = Color.FromArgb(
specularAmount > 0.5 ? (int)MathUtilities.Clamp((albedoSourceColor.R * specularAmount), 255, clampValue) : 56,
specularAmount > 0.5 ? (int)MathUtilities.Clamp((albedoSourceColor.G * specularAmount), 255, clampValue) : 56,
specularAmount > 0.5 ? (int)MathUtilities.Clamp((albedoSourceColor.B * specularAmount), 255, clampValue) : 56);
var albedoColor = Color.FromArgb(
albedoSourceColor.A,
colorAmount < 0.5 ? (int)(albedoSourceColor.R * colorAmount) : albedoSourceColor.R,
colorAmount < 0.5 ? (int)(albedoSourceColor.G * colorAmount) : albedoSourceColor.G,
colorAmount < 0.5 ? (int)(albedoSourceColor.B * colorAmount) : albedoSourceColor.B);
// Patch Pixels
albedoMap.SetPixel(x, y, albedoColor);
specularMap.SetPixel(x, y, specularColor);
}
}
// Close them
albedoSource.Dispose();
specularMaskSource.Dispose();
// Save Images
albedoMap.Save(albedoOutput, false);
specularMap.Save(specularOutput, false);
}
}
/// <summary>
/// Expands an XY normal map to XYZ
/// </summary>
/// <param name="bitmapSource">Bitmap to patch</param>
public static void ExpandNormalMap(BitmapX bitmapSource)
{
// Loop X/Width
for (int x = 0; x < bitmapSource.Width; x++)
{
// Loop Y/Height
for (int y = 0; y < bitmapSource.Height; y++)
{
// Get Original Color
var color = bitmapSource.GetPixel(x, y);
// Patch it
bitmapSource.SetPixel(x, y, Color.FromArgb(255, color.R, color.G, CalculateNormalMapZValue(color.R, color.G)));
}
}
}
/// <summary>
/// Splits a Bitmap's RGB and Alpha Channel
/// </summary>
/// <param name="bitmapSource">Bitmap to split</param>
/// <param name="rgbOutput">RGB Output Path</param>
/// <param name="alphaOutput">Alpha Output</param>
public static void SplitAllChannels(BitmapX bitmapSource, string rOutput, string gOutput, string bOutput, string aOutput)
{
// Input and Output
using (bitmapSource)
using (BitmapX rMap = new BitmapX(bitmapSource.Width, bitmapSource.Height))
using (BitmapX gMap = new BitmapX(bitmapSource.Width, bitmapSource.Height))
using (BitmapX bMap = new BitmapX(bitmapSource.Width, bitmapSource.Height))
using (BitmapX aMap = new BitmapX(bitmapSource.Width, bitmapSource.Height))
{
// Loop X/Width
for (int x = 0; x < bitmapSource.Width; x++)
{
// Loop Y/Height
for (int y = 0; y < bitmapSource.Height; y++)
{
// Get Original Color
var color = bitmapSource.GetPixel(x, y);
// Set Values
var rCol = Color.FromArgb(color.R, color.R, color.R);
var gCol = Color.FromArgb(color.G, color.G, color.G);
var bCol = Color.FromArgb(color.B, color.B, color.B);
var aCol = Color.FromArgb(color.A, color.A, color.A);
// Patch Pixels
rMap.SetPixel(x, y, rCol);
gMap.SetPixel(x, y, gCol);
bMap.SetPixel(x, y, bCol);
aMap.SetPixel(x, y, aCol);
}
}
// Save Images
rMap.Save(rOutput, false);
gMap.Save(gOutput, false);
bMap.Save(bOutput, false);
aMap.Save(aOutput, false);
}
}
