public static Texture2D Extrude(this Texture2D source, Vector2 tileSize, Vector2 borderSize, TextureExtrude extrudeColor = TextureExtrude.Default)
{
if (source == null)
{
return(null);
}
int cols = (int)Mathf.Floor(source.width / tileSize.x);
int rows = (int)Mathf.Floor(source.height / tileSize.y);
Color border = Color.black;
switch (extrudeColor)
{
case TextureExtrude.White:
border = Color.white;
break;
case TextureExtrude.Red:
border = Color.red;
break;
case TextureExtrude.Green:
border = Color.green;
break;
case TextureExtrude.Blue:
border = Color.blue;
break;
case TextureExtrude.Yellow:
border = Color.yellow;
break;
case TextureExtrude.Gray:
border = Color.gray;
break;
default:
border = Color.black;
break;
}
Texture2D texture = new Texture2D((int)(cols * (tileSize.x + borderSize.x * 2f)), source.height, source.format, false);
texture.filterMode = source.filterMode;
for (int i = 0; i < cols; i++)
{
Color[] c1 = source.GetPixels((int)(i * tileSize.x), 0, 1, source.height);
Color[] c2 = source.GetPixels((int)((i + 1) * tileSize.x - 1), 0, 1, source.height);
// Format border pixels
if (extrudeColor != TextureExtrude.Default && extrudeColor != TextureExtrude.Mirror)
{
for (int index = 0; index < c1.Length; index++)
{
c1[index] = border;
}
for (int index = 0; index < c2.Length; index++)
{
c2[index] = border;
}
}
else if (extrudeColor == TextureExtrude.Mirror)
{
// TODO: Mirror Edge Pixels
}
for (int j = 0; j < borderSize.x; j++)
{
texture.SetPixels((int)(i * (tileSize.x + borderSize.x * 2) + j), 0, 1, source.height, c1);
texture.SetPixels((int)(i * (tileSize.x + borderSize.x * 2) + j + tileSize.x + borderSize.x), 0, 1, source.height, c2);
}
texture.SetPixels((int)(i * (tileSize.x + borderSize.x * 2) + borderSize.x), 0, (int)tileSize.x, source.height, source.GetPixels((int)(i * tileSize.x), 0, (int)tileSize.x, source.height));
}
Texture2D temp = texture;
texture = new Texture2D(temp.width, (int)(rows * (tileSize.y + borderSize.y * 2f)), source.format, false);
texture.filterMode = source.filterMode;
for (int i = 0; i < rows; i++)
{
Color [] c1 = temp.GetPixels(0, (int)(i * tileSize.y), temp.width, 1);
Color [] c2 = temp.GetPixels(0, (int)((i + 1) * tileSize.y - 1), temp.width, 1);
// Format border pixels
if (extrudeColor != TextureExtrude.Default && extrudeColor != TextureExtrude.Mirror)
{
for (int index = 0; index < c1.Length; index++)
{
c1[index] = border;
}
for (int index = 0; index < c2.Length; index++)
{
c2[index] = border;
}
}
else if (extrudeColor == TextureExtrude.Mirror)
{
// TODO: Mirror Edge Pixels
}
for (int j = 0; j < borderSize.y; j++)
{
texture.SetPixels(0, (int)(i * (tileSize.y + borderSize.y * 2) + j), temp.width, 1, c1);
texture.SetPixels(0, (int)(i * (tileSize.y + borderSize.y * 2) + j + tileSize.y + borderSize.y), temp.width, 1, c2);
}
texture.SetPixels(0, (int)(i * (tileSize.y + borderSize.y * 2) + borderSize.y), temp.width, (int)tileSize.y, temp.GetPixels(0, (int)(i * tileSize.y), temp.width, (int)tileSize.y));
}
texture.Apply();
return(texture);
}
public static Texture2D Extrude(this Texture2D source, int padding, bool bilinearScaling = true, TextureExtrude extrudeColor = TextureExtrude.Default)
{
if (source == null)
{
return(null);
}
int ratio = padding * 2;
int width = source.width - ratio;
int height = source.height - ratio;
Vector2 tileSize = new Vector2(width, height);
Vector2 borderSize = new Vector2(padding, padding);
source.Scale(width, height, bilinearScaling);
return(source.Extrude(tileSize, borderSize, extrudeColor));
}