public override void RenderStep(MazeGenerationResults results)
{
Polygons = new List <ColoredPolygon>();
base.RenderStep(results);
var allPoints = Polygons.SelectMany(x => x.Points).ToArray();
var commonPolygon = new Polygon(allPoints);
var boundingRectangle = commonPolygon.GetBoundingRectangle();
var bmp = new Bitmap(boundingRectangle.Width, boundingRectangle.Height);
var graphics = Graphics.FromImage(bmp);
foreach (var polygon in Polygons)
{
var adjustedPoints = polygon.Points.Select(x => new System.Drawing.Point(x.X - boundingRectangle.X, x.Y - boundingRectangle.Y)).ToArray();
graphics.FillPolygon(Brushes[polygon.Color], adjustedPoints);
}
GifImage.AddFrame(bmp, FrameDelay, boundingRectangle.X, boundingRectangle.Y);
if (results.ResultsType == GenerationResultsType.GenerationCompleted)
{
GifImage.Complete();
GifImage.OutStream.Position = 0;
using (var fs = new FileStream(FilePath, FileMode.Create))
{
GifImage.OutStream.CopyTo(fs);
}
}
}
public BRGifMapRenderer(IMap map, Point targetSize, string filePath, int frameDelay = 10) : base(map, targetSize)
{
FilePath = filePath;
FrameDelay = frameDelay;
var ms = new MemoryStream();
GifImage = new GifImage(ms);
GifImage.DefaultFrameDelay = FrameDelay;
GifImage.DefaultWidth = targetSize[0];
GifImage.DefaultHeight = targetSize[1];
Brushes = new Dictionary <Color, Brush>();
foreach (var color in Colors)
{
Brushes.Add(color.Value, new SolidBrush(color.Value));
}
var initialImage = new Bitmap(targetSize[0], targetSize[1]);
//var initialGraphics = Graphics.FromImage(initialImage);
//initialGraphics.FillRectangle(new SolidBrush(Color.Red), new Rectangle(0,0,initialImage.Width, initialImage.Height));
GifImage.AddFrame(initialImage, FrameDelay);
}
private void ReadFrameColors(byte[] indices, byte[] colorTable, GifImageDescriptor descriptor)
{
int imageWidth = _logicalScreenDescriptor.Width;
int imageHeight = _logicalScreenDescriptor.Height;
if (_currentFrame == null)
{
_currentFrame = new byte[imageWidth * imageHeight * 4];
}
byte[] lastFrame = null;
if (_graphicsControl != null &&
_graphicsControl.DisposalMethod == DisposalMethod.RestoreToPrevious)
{
lastFrame = new byte[imageWidth * imageHeight * 4];
Array.Copy(_currentFrame, lastFrame, lastFrame.Length);
}
int offset = 0, i = 0, index = -1;
int iPass = 0; // the interlace pass
int iInc = 8; // the interlacing line increment
int iY = 0; // the current interlaced line
int writeY = 0; // the target y offset to write to
for (int y = descriptor.Top; y < descriptor.Top + descriptor.Height; y++)
{
// Check if this image is interlaced.
if (descriptor.InterlaceFlag)
{
// If so then we read lines at predetermined offsets.
// When an entire image height worth of offset lines has been read we consider this a pass.
// With each pass the number of offset lines changes and the starting line changes.
if (iY >= descriptor.Height)
{
iPass++;
switch (iPass)
{
case 1:
iY = 4;
break;
case 2:
iY = 2;
iInc = 4;
break;
case 3:
iY = 1;
iInc = 2;
break;
}
}
writeY = iY + descriptor.Top;
iY += iInc;
}
else
{
writeY = y;
}
for (int x = descriptor.Left; x < descriptor.Left + descriptor.Width; x++)
{
offset = writeY * imageWidth + x;
index = indices[i];
if (_graphicsControl == null ||
_graphicsControl.TransparencyFlag == false ||
_graphicsControl.TransparencyIndex != index)
{
_currentFrame[offset * 4 + 0] = colorTable[index * 3 + 0];
_currentFrame[offset * 4 + 1] = colorTable[index * 3 + 1];
_currentFrame[offset * 4 + 2] = colorTable[index * 3 + 2];
_currentFrame[offset * 4 + 3] = (byte)255;
}
i++;
}
}
byte[] pixels = new byte[imageWidth * imageHeight * 4];
Array.Copy(_currentFrame, pixels, pixels.Length);
_currentFrame = new byte[imageWidth * imageHeight * 4];
GifFrame frame = new GifFrame(imageWidth, imageHeight);
int indx = 0;
byte r, g, b, a;
for (uint y = 0; y < frame.height; y++)
{
for (uint x = 0; x < frame.width; x++)
{
r = pixels[indx];
indx++;
g = pixels[indx];
indx++;
b = pixels[indx];
indx++;
a = pixels[indx];
indx++;
frame.SetPixelEx(x, y, new Color32(r, g, b, a));
}
}
pixels = null;
System.GC.Collect();
_image.AddFrame(frame);
if (_graphicsControl != null)
{
if (_graphicsControl.DelayTime > 0)
{
_image.timePerFrame = _graphicsControl.DelayTime;
}
if (_graphicsControl.DisposalMethod == DisposalMethod.RestoreToBackground)
{
//GifFrame im = new GifFrame(imageWidth, imageHeight);
//im.Clear(new Color32(0,0,0,0));
//_image.AddFrame(im);
//_image.loop = false;
}
else if (_graphicsControl.DisposalMethod == DisposalMethod.RestoreToPrevious)
{
_image.loop = true;
}
}
}
