public void Set(string stream)
{
//Debug.Log("GLOBAL COLOR TABLE: " + stream);
ColorList = new Dictionary <int, GifColor>();
if (stream.Length % 6 != 0)
{
Debug.LogError("GLOBAL COLOR TABLE LENGTH DOESNT MOD 6");
}
NumberOfColors = stream.Length / 6;
//Debug.LogError("GLOBAL COLOR TABLE COLORS: " + NumberOfColors);
GlobalColorTableString = stream;
//Debug.LogError("GLOBAL COLOR TABLE: " + GlobalColorTableString);
//create our color table here using a dictionary
int index = 0;
bool check = false;
for (int i = 0; i < GlobalColorTableString.Length; i += 6)
{
string colorString = GlobalColorTableString.Substring(i, 6);
if (colorString == "000000" && !check)
{
Debug.LogError("FIRST 000000 IN GLOBAL COLOR TABLE: " + (i / 6) + "/" + (GlobalColorTableString.Length / 6));
check = true;
}
GifColor color = new GifColor();
color.Set(colorString);
ColorList.Add(index, color);
index++;
}
//Debug.LogError("ADDED " + index + " COLORS TO OUR COLOR TABLE");
}
private GifColor[] readColorTable(byte[] bytes, int offset, int size)
{
GifColor[] colorTable = new GifColor[size];
for (int i = 0; i < size; i++)
{
int startIndex = offset + i * 3;
GifColor color = new GifColor(bytes[startIndex], bytes[startIndex + 1], bytes[startIndex + 2], 1);
colorTable[i] = color;
}
return(colorTable);
}
private GifColor[] readColorTable(byte[] bytes, int offset, int size)
{
GifColor[] colorTable = new GifColor[size];
for (int i = 0; i < size; i++)
{
int startIndex = offset + i * 3;
GifColor color = new GifColor(bytes[startIndex], bytes[startIndex + 1], bytes[startIndex + 2], 1);
colorTable[i] = color;
}
// Debug.Log($"This gif has {size / 3} colors on its color table.");
return(colorTable);
}
public static GifColor[] ReadColorTable(Stream stream, int size)
{
int length = 3 * size;
byte[] bytes = new byte[length];
stream.ReadAll(bytes, 0, length);
GifColor[] colorTable = new GifColor[size];
for (int i = 0; i < size; i++)
{
byte r = bytes[3 * i];
byte g = bytes[3 * i + 1];
byte b = bytes[3 * i + 2];
colorTable[i] = new GifColor(r, g, b);
}
return colorTable;
}
public static GifColor[] ReadColorTable(Stream stream, int size)
{
var length = 3 * size;
var bytes = new byte[length];
stream.ReadAll(bytes, 0, length);
var colorTable = new GifColor[size];
for (var i = 0; i < size; i++)
{
var r = bytes[3 * i];
var g = bytes[3 * i + 1];
var b = bytes[3 * i + 2];
colorTable[i] = new GifColor(r, g, b);
}
return(colorTable);
}
private void createAnimator(GifData gifData)
{
List <Sprite> sprites = new List <Sprite>();
GifAnimatorScript animatorScript = gameObject.AddComponent <GifAnimatorScript>();
Color[] previousFrame = new Color[gifData.canvasWidth * gifData.canvasHeight];
Color[] currentFrame = new Color[gifData.canvasWidth * gifData.canvasHeight];
Color[] transparentFrame = new Color[gifData.canvasWidth * gifData.canvasHeight];
// Create sprites
for (int i = 0; i < gifData.graphicsControlExtensions.Count; i++)
{
GifGraphicsControlExtension graphicsControlExt = gifData.graphicsControlExtensions[i];
GifImageDescriptor imageDescriptor = graphicsControlExt.imageDescriptor;
GifImageData imageData = imageDescriptor.imageData;
int top = imageDescriptor.imageTop;
int left = imageDescriptor.imageLeft;
int disposalMethod = graphicsControlExt.disposalMethod;
Texture2D texture = new Texture2D(gifData.canvasWidth, gifData.canvasHeight);
int transparencyIndex = graphicsControlExt.transparentColorFlag ? graphicsControlExt.transparentColorIndex : -1;
// Determine base pixels
if (i == 0)
{
texture.SetPixels(transparentFrame);
}
else
{
if (disposalMethod == 1)
{
texture.SetPixels(previousFrame);
}
else if (disposalMethod == 2)
{
texture.SetPixels(transparentFrame);
}
else if (disposalMethod == 3)
{
throw new NotImplementedException("Disposal method 3 is not implemented.");
}
}
// Set pixels from image data
for (int j = 0; j < imageDescriptor.imageWidth; j++)
{
for (int k = 0; k < imageDescriptor.imageHeight; k++)
{
int x = left + j;
int y = (gifData.canvasHeight - 1) - (top + k);
int colorIndex = imageData.colorIndices[j + k * imageDescriptor.imageWidth];
int pixelOffset = x + y * gifData.canvasWidth;
if (colorIndex != transparencyIndex)
{
GifColor gifColor = imageData.getColor(colorIndex);
currentFrame[pixelOffset] = new Color(gifColor.r / 255f, gifColor.g / 255f, gifColor.b / 255f);
}
}
}
// Set texture pixels and create sprite
texture.SetPixels(currentFrame);
texture.Apply();
texture.filterMode = FilterMode.Point;
sprites.Add(Sprite.Create(texture, new Rect(0f, 0f, gifData.canvasWidth, gifData.canvasHeight), new Vector2(1f, 1f)));
// Store current frame as previous before continuing, and reset current frame
currentFrame.CopyTo(previousFrame, 0);
if (disposalMethod == 0 || disposalMethod == 2)
{
currentFrame = new Color[currentFrame.Length];
}
}
// Setup animator script
animatorScript.sprites = sprites;
}
private void createAnimator(GifData gifData)
{
List <Sprite> sprites = new List <Sprite>();
GifAnimatorScript animatorScript = gameObject.AddComponent <GifAnimatorScript>();
Color[] previousFrame = new Color[gifData.canvasWidth * gifData.canvasHeight];
Color[] currentFrame = new Color[gifData.canvasWidth * gifData.canvasHeight];
Color[] transparentFrame = new Color[gifData.canvasWidth * gifData.canvasHeight];
// Create sprites
for (int i = 0; i < gifData.graphicsControlExtensions.Count; i++)
{
GifGraphicsControlExtension graphicsControlExt = gifData.graphicsControlExtensions[i];
GifImageDescriptor imageDescriptor = graphicsControlExt.imageDescriptor;
GifImageData imageData = imageDescriptor.imageData;
int top = imageDescriptor.imageTop;
int left = imageDescriptor.imageLeft;
int disposalMethod = graphicsControlExt.disposalMethod;
Texture2D texture = new Texture2D(gifData.canvasWidth, gifData.canvasHeight);
int transparencyIndex = graphicsControlExt.transparentColorFlag ? graphicsControlExt.transparentColorIndex : -1;
// Determine base pixels
if (i == 0)
{
texture.SetPixels(transparentFrame);
}
else
{
if (disposalMethod == 1)
{
texture.SetPixels(previousFrame);
}
else if (disposalMethod == 2)
{
texture.SetPixels(transparentFrame);
}
else if (disposalMethod == 3)
{
throw new NotImplementedException("Disposal method 3 is not implemented.");
}
}
// Set pixels from image data
for (int j = 0; j < imageDescriptor.imageWidth; j++)
{
for (int k = 0; k < imageDescriptor.imageHeight; k++)
{
int x = left + j;
int y = (gifData.canvasHeight - 1) - (top + k);
int colorIndex = imageData.colorIndices[j + k * imageDescriptor.imageWidth];
int pixelOffset = x + y * gifData.canvasWidth;
if (colorIndex != transparencyIndex)
{
GifColor gifColor = imageData.getColor(colorIndex);
currentFrame[pixelOffset] = new Color(gifColor.r / 255f, gifColor.g / 255f, gifColor.b / 255f);
}
}
}
//float bgMax = 50f / 255;
//var transparent = currentFrame.Where(p => p.a == 0);
//var bgMeanSum = currentFrame.Aggregate(new float[8], (curSum, color) =>
//{
// curSum[4] += color.a;
// ++curSum[5];
// if (color.a > 0)
// {
// curSum[6] += color.a;
// ++curSum[7];
// }
// if (color.r >= bgMax || color.g >= bgMax || color.b >= bgMax)
// return curSum; // We are interested on dark colors
// curSum[0] += color.r;
// curSum[1] += color.g;
// curSum[2] += color.b;
// ++curSum[3];
// return curSum;
//});
//var bgMean = new Color32(
// (byte)(bgMeanSum[0] * 255 / bgMeanSum[3]),
// (byte)(bgMeanSum[1] * 255 / bgMeanSum[3]),
// (byte)(bgMeanSum[2] * 255 / bgMeanSum[3]),
// (byte)(bgMeanSum[4] * 255 / bgMeanSum[5]));
//Debug.Log(
// $"Frame {i} has transparent colors?: {transparent.Any()} || Count: {transparent.Count()} || Background: {bgMean}" +
// Environment.NewLine +
// $"Solid transparency mean (must be 255): {(byte)(bgMeanSum[6] * 255 / bgMeanSum[7])}");
// Set texture pixels and create sprite
texture.SetPixels(currentFrame);
texture.Apply();
texture.filterMode = FilterMode.Point;
sprites.Add(Sprite.Create(texture, new Rect(0f, 0f, gifData.canvasWidth, gifData.canvasHeight), new Vector2(1f, 1f)));
// Store current frame as previous before continuing, and reset current frame
currentFrame.CopyTo(previousFrame, 0);
if (disposalMethod == 0 || disposalMethod == 2)
{
currentFrame = new Color[currentFrame.Length];
}
}
// Setup animator script
animatorScript.sprites = sprites;
}
public void Set(string stream)
{
//Debug.Log("GLOBAL COLOR TABLE: " + stream);
ColorList = new Dictionary<int, GifColor>();
if(stream.Length % 6 != 0)
{
Debug.LogError("GLOBAL COLOR TABLE LENGTH DOESNT MOD 6");
}
NumberOfColors = stream.Length / 6;
//Debug.LogError("GLOBAL COLOR TABLE COLORS: " + NumberOfColors);
GlobalColorTableString = stream;
//Debug.LogError("GLOBAL COLOR TABLE: " + GlobalColorTableString);
//create our color table here using a dictionary
int index = 0;
bool check = false;
for(int i = 0; i < GlobalColorTableString.Length; i+=6)
{
string colorString = GlobalColorTableString.Substring(i, 6);
if(colorString == "000000" && !check)
{
Debug.LogError("FIRST 000000 IN GLOBAL COLOR TABLE: " + (i/6) + "/" + (GlobalColorTableString.Length/6));
check = true;
}
GifColor color = new GifColor();
color.Set(colorString);
ColorList.Add(index,color);
index++;
}
//Debug.LogError("ADDED " + index + " COLORS TO OUR COLOR TABLE");
}
