private Texture2D IndexedToTexture(SpriteFrameData frame)
{
var image = new Texture2D(frame.Width, frame.Height, TextureFormat.ARGB32, false);
image.wrapMode = TextureWrapMode.Clamp;
image.alphaIsTransparency = true;
var colors = new Color[frame.Width * frame.Height];
for (var y = 0; y < frame.Height; y++)
{
for (var x = 0; x < frame.Width; x++)
{
var index1 = frame.Data[x + y * frame.Width] * 4;
var r = paletteData[index1 + 0];
var g = paletteData[index1 + 1];
var b = paletteData[index1 + 2];
var a = index1 > 0 ? 255 : 0;
var color = new Color(r / 255f, g / 255f, b / 255f, a / 255f);
colors[x + (frame.Height - y - 1) * frame.Width] = color;
//image.SetPixel(x, frame.Height - y - 1, color);
}
}
ExtendSpriteTextureData(colors, frame);
image.SetPixels(colors);
return(image);
}
private Texture2D RgbaToTexture(SpriteFrameData frame)
{
var image = new Texture2D(frame.Width, frame.Height, TextureFormat.ARGB32, false);
image.wrapMode = TextureWrapMode.Clamp;
image.alphaIsTransparency = true;
var colors = new Color[frame.Width * frame.Height];
//Debug.Log(frame.Width + " " + frame.Height);
for (var y = 0; y < frame.Height; y++)
{
for (var x = 0; x < frame.Width; x++)
{
var pos = (x + (frame.Height - y - 1) * frame.Width) * 4;
var r = frame.Data[pos + 3];
var g = frame.Data[pos + 2];
var b = frame.Data[pos + 1];
var a = frame.Data[pos + 0];
var color = new Color(r / 255f, g / 255f, b / 255f, a / 255f);
colors[x + (frame.Height - y - 1) * frame.Width] = color;
}
}
ExtendSpriteTextureData(colors, frame);
image.SetPixels(colors);
return(image);
}
private void ExtendSpriteTextureData(Color[] colors, SpriteFrameData frame)
{
//we're going to extend the sprite color into the transparent area around the sprite
//this is to make bilinear filtering work good with the sprite
for (var y = 0; y < frame.Height; y++)
{
for (var x = 0; x < frame.Width; x++)
{
var count = 0;
var r = 0f;
var g = 0f;
var b = 0f;
var color = colors[x + y * frame.Width];
if (!Mathf.Approximately(color.a, 0))
{
continue;
}
for (var y2 = -1; y2 <= 1; y2++)
{
for (var x2 = -1; x2 <= 1; x2++)
{
if (y + y2 < 0 || y + y2 >= frame.Height)
{
continue;
}
if (x + x2 < 0 || x + x2 >= frame.Width)
{
continue;
}
var color2 = colors[x + x2 + (y + y2) * frame.Width];
if (Mathf.Approximately(color2.a, 0))
{
continue;
}
count++;
r += color2.r;
g += color2.g;
b += color2.b;
}
}
if (count > 0)
{
colors[x + y * frame.Width] = new Color(r / count, g / count, b / count, 0);
}
}
}
}
private void ReadRgbaImage()
{
for (var i = 0; i < rgbaCount; i++)
{
var width = br.ReadInt16();
var height = br.ReadInt16();
var frame = new SpriteFrameData()
{
IsIndexed = false,
Width = width,
Height = height,
Data = br.ReadBytes(width * height * 4)
};
spriteFrames.Add(frame);
}
}
private void ReadRleIndexedImage()
{
for (var i = 0; i < indexCount; i++)
{
var width = br.ReadUInt16();
var height = br.ReadUInt16();
var size = width * height;
var data = new byte[size];
var index = 0;
var end = br.ReadUInt16() + fs.Position;
while (fs.Position < end)
{
var c = br.ReadByte();
data[index++] = c;
if (c == 0)
{
var count = br.ReadByte();
if (count == 0)
{
data[index++] = count;
}
else
{
for (var j = 1; j < count; j++)
{
data[index++] = c;
}
}
}
}
var frame = new SpriteFrameData()
{
IsIndexed = true,
Width = width,
Height = height,
Data = data
};
spriteFrames.Add(frame);
}
}
private void ReadIndexedImage()
{
for (var i = 0; i < indexCount; i++)
{
var width = br.ReadUInt16();
var height = br.ReadUInt16();
var data = br.ReadBytes(width * height);
var frame = new SpriteFrameData()
{
IsIndexed = true,
Width = width,
Height = height,
Data = data
};
spriteFrames.Add(frame);
}
}
