public static Texture2D Copy(this Texture2D source, TextureFormat format = TextureFormat.RGBA32, CopyFilterMode filter = CopyFilterMode.Source, bool getSafePixels = false)
{
if (source == null)
{
return(null);
}
Color[] pixels = (getSafePixels == true) ? source.GetSafePixels() : source.GetPixels();
var result = new Texture2D(source.width, source.height, format, false);
result.name = source.name;
switch (filter)
{
case CopyFilterMode.Source:
result.filterMode = source.filterMode;
break;
case CopyFilterMode.Point:
result.filterMode = FilterMode.Point;
break;
case CopyFilterMode.Bilinear:
result.filterMode = FilterMode.Bilinear;
break;
case CopyFilterMode.Trilinear:
result.filterMode = FilterMode.Trilinear;
break;
}
if (pixels != null)
{
result.SetPixels(pixels);
result.Apply();
}
return(result);
}
public static bool HasAlpha(this Texture2D source, bool getSafePixels = false)
{
bool hasAlpha = source.alphaIsTransparency;
Color[] apixels = (getSafePixels == true) ? source.GetSafePixels(new Rect(0, 0, source.width, source.height)) : source.GetPixels(0, 0, source.width, source.height);
for (int index = 0; index < apixels.Length; index++)
{
hasAlpha |= apixels[index].a <= 0.99999f;
}
return(hasAlpha);
}
public static void InvertAlpha(this Texture2D source, bool getSafePixels = false)
{
if (source == null)
{
return;
}
Color[] colors = (getSafePixels == true) ? source.GetSafePixels(): source.GetPixels();
for (int index = 0; index < colors.Length; index++)
{
colors[index].a = (1.0f - colors[index].a);
}
source.SetPixels(colors);
source.Apply();
}
public static void ScaleAlpha(this Texture2D source, float scale, bool getSafePixels = false)
{
if (source == null)
{
return;
}
Color[] colors = (getSafePixels == true) ? source.GetSafePixels(): source.GetPixels();
for (int index = 0; index < colors.Length; index++)
{
colors[index].a = Mathf.Clamp((colors[index].a * scale), 0.0f, 1.0f);
}
source.SetPixels(colors);
source.Apply();
}
public static void MakeGrayscale(this Texture2D source, bool getSafePixels = false)
{
if (source == null)
{
return;
}
Color[] colors = (getSafePixels == true) ? source.GetSafePixels(): source.GetPixels();
Color[] pixels = new Color[source.width * source.height];
for (int index = 0; index < pixels.Length; index++)
{
float gray = colors[index].grayscale;
pixels[index] = new Color(gray, gray, gray, 1.0f);
}
source.SetPixels(pixels);
source.Apply();
}
public static void MakeAlpha(this Texture2D source, float alpha = 1.0f, bool getSafePixels = false)
{
if (source == null)
{
return;
}
Color[] colors = (getSafePixels == true) ? source.GetSafePixels(): source.GetPixels();
Color[] pixels = new Color[source.width * source.height];
for (int index = 0; index < pixels.Length; index++)
{
pixels[index].r = Mathf.Clamp(colors[index].r, 0.0f, 1.0f);
pixels[index].g = Mathf.Clamp(colors[index].g, 0.0f, 1.0f);
pixels[index].b = Mathf.Clamp(colors[index].b, 0.0f, 1.0f);
pixels[index].a = alpha;
}
source.SetPixels(pixels);
source.Apply();
}