private void Initialize(int width, int height)
{
_width = width;
_height = height;
_bmp = new Bitmap(_width, _height, PixelFormat.Format24bppRgb);
BitmapData bmpData = _bmp.LockBits(new Rectangle(0, 0, _width, _height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
_bOffset = bmpData.Stride - (_width * 3);
_bWidth = _width * 3;
_byteCount = bmpData.Stride * _height;
_buffer = new byte[_byteCount];
_bmp.UnlockBits(bmpData);
_nullXArray = new int[_height];
_nullColorArray = new ColorHLS[_height];
for (int i = 0; i < _height; i++)
{
_nullXArray[i] = -1;
_nullColorArray[i] = new ColorHLS(0, 0, 0, 0);
}
}
public void SetPixel(int x, int y, ColorHLS color, out PixelInfo oldPixelInfo)
{
ColorHLS oldColor;
SetPixel(x, y, color, out oldColor);
oldPixelInfo = new PixelInfo(x, y, oldColor);
}
public unsafe void ClearBuffer(ColorHLS color)
{
fixed(byte *buffer = _buffer)
{
ClearBuffer(buffer, color);
}
}
public unsafe void SetPixel(int x, int y, ColorHLS color, out ColorHLS oldColor)
{
fixed(byte *buff = _buffer)
{
byte *p = buff;
for (int i = 0; i < y; ++i)
{
p += _bWidth;
p += _bOffset;
}
p += (x * 3);
oldColor = new ColorHLS(255, 0, 0, 0);
oldColor.Blue = (byte)p[0];
p[0] = color.Blue;
p++;
oldColor.Green = (byte)p[0];
p[0] = color.Green;
p++;
oldColor.Red = (byte)p[0];
p[0] = color.Red;
}
}
public void DrawLine(int x1, int y1, int x2, int y2, ColorHLS color1, ColorHLS color2)
{
bool created = false;
ColorHLS color = new ColorHLS(color1);
float[,] steps = new float[0, 0];
ColorHLS[] colors = new ColorHLS[0];
PixelFillingDelegate pfd = delegate(int x, int y, int count, int total, bool setPixel)
{
if (!created)
{
steps = ColorUtils.GetGradientColorSteps(color1, color2, total);
created = true;
}
color.SetRGB(
(byte)steps[count, 0],
(byte)steps[count, 1],
(byte)steps[count, 2]
);
if (setPixel)
{
SetPixel(x, y, color);
}
return(color);
};
DrawLine(x1, y1, x2, y2, pfd);
}
private unsafe void DrawHorizontalLine(int x, int y, int width, PixelFillingDelegate pixFillingDelegate)
{
if (width < 0)
{
// width è negativa
x += width + 1;
}
width = Math.Abs(width);
fixed(byte *buff = _buffer)
{
byte *p = buff;
for (int i = 0; i < y; ++i)
{
p += _bWidth;
p += _bOffset;
}
p += (x * 3);
for (int i = 0; i < width; i++)
{
ColorHLS color = pixFillingDelegate(x + i, y, i, width, false);
p[0] = color.Blue;
p++;
p[0] = color.Green;
p++;
p[0] = color.Red;
p++;
}
}
}
public ColorHLS(ColorHLS hls)
{
_alpha = hls.Alpha;
_red = hls.Red;
_blue = hls.Blue;
_green = hls.Green;
_luminance = hls.Luminance;
_hue = hls.Hue;
_saturation = hls.Saturation;
}
public static ColorHLS[] CreateGradientColorArray(ColorHLS[] colors, int stepCount)
{
if (stepCount == 0 || colors.Length == 0)
{
return(new ColorHLS[0]);
}
if (colors.Length == 1)
{
return(colors);
}
if (stepCount == 1)
{
return(new ColorHLS[] { new ColorHLS(ColorUtils.BlendColors(colors[0], colors[colors.Length - 1], 50)) });
}
ColorHLS[] retColors = new ColorHLS[stepCount];
float step = stepCount / (float)(colors.Length - 1);
int currentStep = 0;
for (int i = 0; i < colors.Length - 1; i++)
{
float r = colors[i].Red;
float g = colors[i].Green;
float b = colors[i].Blue;
ColorHLS c1 = colors[i];
ColorHLS c2 = colors[i + 1];
float stepR = (c2.Red - c1.Red) / step;
float stepG = (c2.Green - c1.Green) / step;
float stepB = (c2.Blue - c1.Blue) / step;
int count = (int)(step * (i + 1));
int k = (int)(step * i);
while (k < count)
{
retColors[currentStep] = new ColorHLS(255, (byte)r, (byte)g, (byte)b);
r += stepR;
g += stepG;
b += stepB;
currentStep++;
k++;
}
}
retColors[stepCount - 1] = colors[colors.Length - 1].Clone();
return(retColors);
}
public void DrawLine(int x1, int y1, int x2, int y2, ColorHLS color)
{
ColorHLS pixCol = color.Clone();
PixelFillingDelegate pfd = delegate(int x, int y, int count, int total, bool setPixel)
{
if (setPixel)
{
SetPixel(x, y, pixCol);
}
return(pixCol);
};
DrawLine(x1, y1, x2, y2, pfd);
}
private unsafe void ClearBuffer(byte *buffer, ColorHLS color)
{
for (int y = 0; y < _height; ++y)
{
for (int x = 0; x < _bWidth; x += 3)
{
buffer[0] = color.Blue;
++buffer;
buffer[0] = color.Green;
++buffer;
buffer[0] = color.Red;
++buffer;
}
buffer += _bOffset;
}
}
public static float[] GetGradientColorStep(ColorHLS startColor, ColorHLS endColor, int stepCount)
{
if (stepCount == 0)
{
return(new float[0]);
}
if (stepCount == 1)
{
return(new float[] { 0 });
}
float stepR = (endColor.Red - startColor.Red) / (float)stepCount;
float stepG = (endColor.Green - startColor.Green) / (float)stepCount;
float stepB = (endColor.Blue - startColor.Blue) / (float)stepCount;
return(new float[] { stepR, stepG, stepB });
}
public static float[,] GetGradientColorSteps(ColorHLS startColor, ColorHLS endColor, int stepCount)
{
if (stepCount == 0)
{
return(new float[0, 0]);
}
float r = startColor.Red;
float g = startColor.Green;
float b = startColor.Blue;
float[,] steps = new float[stepCount, 3];
if (stepCount == 1)
{
for (int i = 0; i < stepCount; i++)
{
steps[i, 0] = r;
steps[i, 1] = g;
steps[i, 2] = b;
}
return(steps);
}
float stepR = (endColor.Red - startColor.Red) / (float)stepCount;
float stepG = (endColor.Green - startColor.Green) / (float)stepCount;
float stepB = (endColor.Blue - startColor.Blue) / (float)stepCount;
for (int i = 0; i < stepCount; i++)
{
steps[i, 0] = r;
steps[i, 1] = g;
steps[i, 2] = b;
r += stepR;
g += stepG;
b += stepB;
}
return(steps);
}
public static ColorHLS[] CreateGradientColorArray(ColorHLS startColor, ColorHLS endColor, int stepCount)
{
if (stepCount == 0)
{
return(new ColorHLS[0]);
}
if (stepCount == 1)
{
return(new ColorHLS[] { new ColorHLS(255, (byte)((startColor.Red + endColor.Red) / 2), (byte)((startColor.Green + endColor.Green) / 2), (byte)((startColor.Blue + endColor.Blue) / 2)) });
}
float stepR = (endColor.Red - startColor.Red) / (float)stepCount;
float stepG = (endColor.Green - startColor.Green) / (float)stepCount;
float stepB = (endColor.Blue - startColor.Blue) / (float)stepCount;
float r = startColor.Red;
float g = startColor.Green;
float b = startColor.Blue;
ColorHLS[] colors = new ColorHLS[stepCount];
for (int i = 0; i < stepCount - 1; i++)
{
colors[i] = new ColorHLS(
255,
(byte)Math.Round(r, MidpointRounding.ToEven),
(byte)Math.Round(g, MidpointRounding.ToEven),
(byte)Math.Round(b, MidpointRounding.ToEven)
);
r += stepR;
g += stepG;
b += stepB;
}
colors[colors.Length - 1] = endColor;
return(colors);
}
public static ColorHLS BlendColors(ColorHLS backColor, ColorHLS foreColor, float alphaPercentage)
{
if (alphaPercentage > 100)
{
throw new ArgumentOutOfRangeException("alphaPercentage must be under 100");
}
if (alphaPercentage == 0)
{
return(foreColor);
}
float redDiff = foreColor.Red - backColor.Red;
float greenDiff = foreColor.Green - backColor.Green;
float blueDiff = foreColor.Blue - backColor.Blue;
alphaPercentage = alphaPercentage / 100f;
redDiff = (redDiff * alphaPercentage) + backColor.Red;
greenDiff = (greenDiff * alphaPercentage) + backColor.Green;
blueDiff = (blueDiff * alphaPercentage) + backColor.Blue;
return(new ColorHLS(255, (byte)redDiff, (byte)greenDiff, (byte)blueDiff));
}
public unsafe void GetPixel(int x, int y, out ColorHLS color)
{
fixed(byte *buff = _buffer)
{
byte *p = buff;
for (int i = 0; i < y; ++i)
{
p += _bWidth;
p += _bOffset;
}
p += (x * 3);
byte b = (byte)(*p);
p++;
byte g = (byte)(*p);
p++;
byte r = (byte)(*p);
color = new ColorHLS(255, r, g, b);
}
}
private unsafe void DrawVerticalLine(int x, int y, int height, PixelFillingDelegate pixFillingDelegate)
{
if (height < 0)
{
// height è negativa
y += height + 1;
}
height = Math.Abs(height);
fixed(byte *buff = _buffer)
{
byte *p = buff;
for (int i = 0; i < y; ++i)
{
p += _bWidth;
p += _bOffset;
}
p += (x * 3);
for (int i = 0; i < height; i++)
{
ColorHLS color = pixFillingDelegate(x, y + i, i, height, false);
p[0] = color.Blue;
p++;
p[0] = color.Green;
p++;
p[0] = color.Red;
p++;
p += (_bWidth - 3);
p += _bOffset;
}
}
}
public PixelInfo(int x, int y, ColorHLS color)
{
X = x;
Y = y;
Color = color;
}
public ColorHLS Clone()
{
ColorHLS c = new ColorHLS(this);
return(c);
}
public void SetPixel(PixelInfo pixelInfo, out ColorHLS oldColor)
{
SetPixel(pixelInfo.X, pixelInfo.Y, pixelInfo.Color, out oldColor);
}
public void SetPixel(int x, int y, ColorHLS color)
{
ColorHLS oldColor;
SetPixel(x, y, color, out oldColor);
}
public PixelBuffer(int width, int height, ColorHLS backColor)
: this(width, height)
{
ClearBuffer(backColor);
}
