/// <summary>
/// Paints on a WriteableBitmap with a stylized airbrush
/// </summary>
/// <param name="bmp">The bitmap to modify</param>
/// <param name="from">The starting point of the stroke</param>
/// <param name="to">The end point of the stroke</param>
/// <param name="color">The color of the stroke</param>
/// <param name="size">The size of the stroke</param>
public static unsafe void Airbrush(WriteableBitmap bmp, Point from, Point to, Color color, int size)
{
Random r = new Random();
if (bmp == null) return;
bmp.Lock();
// Create a line segment representation
MyLine line = new MyLine(from, to);
// Get a bounding box for the painted area
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox linebounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
linebounds.AddPoint((int)from.X, (int)from.Y, size + AirbrushRadiu);
linebounds.AddPoint((int)to.X, (int)to.Y, size + AirbrushRadiu);
linebounds.Clip(bitmapbounds);
UInt32* start = (UInt32*)bmp.BackBuffer.ToPointer();
int stride = bmp.BackBufferStride / sizeof(UInt32);
// Move from 'from' to 'to' along timestep intervals, with one dot painted per interval
for (int i = 0; i < AirbrushDots; i++)
{
int x, y;
line.Interpolate(i, AirbrushDots, out x, out y);
int dist = r.Next() % size;
double angle = r.NextDouble() * 2 * Math.PI;
double dx = Math.Cos(angle) * dist;
double dy = Math.Sqrt(dist * dist - dx * dx);
if (angle > Math.PI) dy = -dy;
int bx = x + (int)dx;
int by = y + (int)dy;
BoundingBox dotbounds = new BoundingBox();
dotbounds.AddPoint(bx, by, AirbrushRadiu);
dotbounds.Clip(bitmapbounds);
for (int k = dotbounds.Top, row = 0; k < dotbounds.Bottom; k++, y++, row++)
for (int j = dotbounds.Left, col = 0; j < dotbounds.Right; j++, col++)
AlphaBlended(start + stride * k + j, Color.FromArgb(AirbrushBytes[row][col], color.R, color.G, color.B));
}
bmp.AddDirtyRect(new Int32Rect(linebounds.Left, linebounds.Top, linebounds.Width, linebounds.Height));
bmp.Unlock();
}
/// <summary>
/// Erases paint on a pbgra32 WriteableBitmap
/// </summary>
/// <param name="bmp">The bitmap to modify</param>
/// <param name="from">The starting point of the stroke</param>
/// <param name="to">The end point of the stroke</param>
/// <param name="size">The stroke size</param>
public static unsafe void Erase(WriteableBitmap bmp, Point from, Point to, int size)
{
if (bmp == null)
{
return;
}
bmp.Lock();
// Intermediate storage of the square of the size
int sizesize = size * size;
// Create a line segment representation to compare distance to
MyLine linesegment = new MyLine(from, to);
// Get a bounding box for the line segment
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox segmentbounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
segmentbounds.AddPoint((int)from.X, (int)from.Y, size);
segmentbounds.AddPoint((int)to.X, (int)to.Y, size);
segmentbounds.Clip(bitmapbounds);
// Get a pointer to the back buffer (we use an int pointer here, since we can safely assume a 32-bit pixel format)
Int32 *start = (Int32 *)bmp.BackBuffer.ToPointer();
// Move the starting pixel to the x offset
start += segmentbounds.Left;
// Loop through the relevant portion of the image and figure out which pixels need to be erased
for (int y = segmentbounds.Top; y < segmentbounds.Bottom; y++)
{
Int32 *pixel = start + bmp.BackBufferStride / sizeof(Int32) * y;
for (int x = segmentbounds.Left; x < segmentbounds.Right; x++)
{
if (linesegment.DistanceSquared(x, y) <= sizesize)
{
*pixel = 0;
}
// Move to the next pixel
pixel++;
}
}
bmp.AddDirtyRect(new Int32Rect(segmentbounds.Left, segmentbounds.Top, segmentbounds.Width, segmentbounds.Height));
bmp.Unlock();
}
public static unsafe void Erase(WriteableBitmap bmp, Point from, Point to, int size)
{
if (bmp == null)
{
return;
}
bmp.Lock();
int sizesize = size * size;
LineSegment linesegment = new LineSegment(from, to);
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox segmentbounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
segmentbounds.AddPoint((int)from.X, (int)from.Y, size);
segmentbounds.AddPoint((int)to.X, (int)to.Y, size);
segmentbounds.Clip(bitmapbounds);
Int32 *start = (Int32 *)bmp.BackBuffer.ToPointer();
start += segmentbounds.Left;
for (int y = segmentbounds.Top; y < segmentbounds.Bottom; y++)
{
Int32 *pixel = start + bmp.BackBufferStride / sizeof(Int32) * y;
for (int x = segmentbounds.Left; x < segmentbounds.Right; x++)
{
if (linesegment.DistanceSquared(x, y) <= sizesize)
{
*pixel = 0;
}
pixel++;
}
}
bmp.AddDirtyRect(new Int32Rect(segmentbounds.Left, segmentbounds.Top, segmentbounds.Width, segmentbounds.Height));
bmp.Unlock();
}
/// <summary>
/// Paints on a pbgra32 WriteableBitmap with a stylized airbrush
/// </summary>
/// <param name="bmp">The bitmap to modify</param>
/// <param name="from">The starting point of the stroke</param>
/// <param name="to">The end point of the stroke</param>
/// <param name="color">The color of the stroke</param>
/// <param name="size">The size of the stroke</param>
public static unsafe void Airbrush(WriteableBitmap bmp, Point from, Point to, Color color, int size)
{
Random r = new Random();
if (bmp == null)
{
return;
}
bmp.Lock();
// Create a line segment representation
MyLine segment = new MyLine(from, to);
// Get a bounding box for the painted area
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox segmentbounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
segmentbounds.AddPoint((int)from.X, (int)from.Y, size + AirbrushRadio);
segmentbounds.AddPoint((int)to.X, (int)to.Y, size + AirbrushRadio);
segmentbounds.Clip(bitmapbounds);
UInt32 *start = (UInt32 *)bmp.BackBuffer.ToPointer();
int stride = bmp.BackBufferStride / sizeof(UInt32);
// Move from 'from' to 'to' along timestep intervals, with one dot painted per interval
for (int i = 0; i < AirbrushDots; i++)
{
int x, y;
segment.Interpolate(i, AirbrushDots, out x, out y);
int dist = r.Next() % size;
double angle = r.NextDouble() * 2 * Math.PI;
double dx = Math.Cos(angle) * dist;
double dy = Math.Sqrt(dist * dist - dx * dx);
if (angle > Math.PI)
{
dy = -dy;
}
int bx = x + (int)dx;
int by = y + (int)dy;
BoundingBox dotbounds = new BoundingBox();
dotbounds.AddPoint(bx, by, AirbrushRadio);
dotbounds.Clip(bitmapbounds);
for (int k = dotbounds.Top, row = 0; k < dotbounds.Bottom; k++, y++, row++)
{
for (int j = dotbounds.Left, col = 0; j < dotbounds.Right; j++, col++)
{
WriteAlphaBlended(start + stride * k + j, Color.FromArgb(AirbrushBytes[row][col], color.R, color.G, color.B));
}
}
}
bmp.AddDirtyRect(new Int32Rect(segmentbounds.Left, segmentbounds.Top, segmentbounds.Width, segmentbounds.Height));
bmp.Unlock();
}
/// <summary>
/// Paints on a pbgra32 WriteableBitmap like a paintbrush
/// </summary>
/// <param name="bmp">The bitmap to modify</param>
/// <param name="from">The starting point of the stroke</param>
/// <param name="to">The end point of the stroke</param>
/// <param name="previous">The point prior to the 'from' point, or null</param>
/// <param name="color">The color of the brush</param>
/// <param name="size">The stroke size</param>
public static unsafe void Brush(WriteableBitmap bmp, Point from, Point to, Point?previous, Color color, int size)
{
if (bmp == null)
{
return;
}
bmp.Lock();
// Intermediate storage of the square of the size
int sizesize = size * size;
uint flatcolor = (uint)((int)color.A << 24) + (uint)((int)color.R << 16) + (uint)((int)color.G << 8) + color.B;
// Create a line segment representation to compare distance to
MyLine linesegment = new MyLine(from, to);
// Get a bounding box for the line segment
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox segmentbounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
segmentbounds.AddPoint((int)from.X, (int)from.Y, size);
segmentbounds.AddPoint((int)to.X, (int)to.Y, size);
segmentbounds.Clip(bitmapbounds);
// Get a pointer to the back buffer (we use an int pointer here, since we can safely assume a 32-bit pixel format)
UInt32 *start = (UInt32 *)bmp.BackBuffer.ToPointer();
// Move the starting pixel to the x offset
start += segmentbounds.Left;
if (previous.HasValue)
{
MyLine previoussegment = new MyLine(previous.Value, from);
// Loop through the relevant portion of the image and figure out which pixels need to be erased
for (int y = segmentbounds.Top; y < segmentbounds.Bottom; y++)
{
UInt32 *pixel = start + bmp.BackBufferStride / sizeof(UInt32) * y;
for (int x = segmentbounds.Left; x < segmentbounds.Right; x++)
{
if (linesegment.DistanceSquared(x, y) <= sizesize && previoussegment.DistanceSquared(x, y) > sizesize)
{
if (color.A == 255)
{
*pixel = flatcolor;
}
else
{
WriteAlphaBlended(pixel, color);
}
}
// Move to the next pixel
pixel++;
}
}
}
else
{
// Loop through the relevant portion of the image and figure out which pixels need to be erased
for (int y = segmentbounds.Top; y < segmentbounds.Bottom; y++)
{
UInt32 *pixel = start + bmp.BackBufferStride / sizeof(UInt32) * y;
for (int x = segmentbounds.Left; x < segmentbounds.Right; x++)
{
if (linesegment.DistanceSquared(x, y) <= sizesize)
{
if (color.A == 255)
{
*pixel = flatcolor;
}
else
{
WriteAlphaBlended(pixel, color);
}
}
// Move to the next pixel
pixel++;
}
}
}
bmp.AddDirtyRect(new Int32Rect(segmentbounds.Left, segmentbounds.Top, segmentbounds.Width, segmentbounds.Height));
bmp.Unlock();
}
/// <summary>
/// Erases paint on a WriteableBitmap
/// </summary>
/// <param name="bmp">The bitmap to modify</param>
/// <param name="from">The starting point of the stroke</param>
/// <param name="to">The end point of the stroke</param>
/// <param name="size">The stroke size</param>
public static unsafe void Erase(WriteableBitmap bmp, Point from, Point to, int size)
{
if (bmp == null) return;
bmp.Lock();
// Intermediate storage of the square of the size
int area = size * size;
// Create a line segment representation to compare distance to
MyLine line = new MyLine(from, to);
// Get a bounding box for the line segment
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox linebounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
linebounds.AddPoint((int)from.X, (int)from.Y, size);
linebounds.AddPoint((int)to.X, (int)to.Y, size);
linebounds.Clip(bitmapbounds);
// Get a pointer to the back buffer (we use an int pointer here, since we can safely assume a 32-bit pixel format)
Int32* start = (Int32*)bmp.BackBuffer.ToPointer();
// Move the starting pixel to the x offset
start += linebounds.Left;
// Loop through the relevant portion of the image and figure out which pixels need to be erased
for (int y = linebounds.Top; y < linebounds.Bottom; y++)
{
Int32* pixel = start + bmp.BackBufferStride / sizeof(Int32) * y;
for (int x = linebounds.Left; x < linebounds.Right; x++)
{
if (line.DistanceSquared(x, y) <= area)
*pixel = 0;
// Move to the next pixel
pixel++;
}
}
bmp.AddDirtyRect(new Int32Rect(linebounds.Left, linebounds.Top, linebounds.Width, linebounds.Height));
bmp.Unlock();
}
/// <summary>
/// Paints on a WriteableBitmap like a paintbrush
/// </summary>
/// <param name="bmp">The bitmap to modify</param>
/// <param name="from">The starting point of the stroke</param>
/// <param name="to">The end point of the stroke</param>
/// <param name="previous">The point prior to the 'from' point, or null</param>
/// <param name="color">The color of the brush</param>
/// <param name="size">The stroke size</param>
public static unsafe void Brush(WriteableBitmap bmp, Point from, Point to, Point? previous, Color color, int size)
{
if (bmp == null) return;
bmp.Lock();
// Intermediate storage of the square of the size
int area = size * size;
uint flatcolor = (uint)((int)color.A << 24) + (uint)((int)color.R << 16) + (uint)((int)color.G << 8) + color.B;
// Create a line segment representation to compare distance to
MyLine line = new MyLine(from, to);
// Get a bounding box for the line segment
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox linebounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
linebounds.AddPoint((int)from.X, (int)from.Y, size);
linebounds.AddPoint((int)to.X, (int)to.Y, size);
linebounds.Clip(bitmapbounds);
// Get a pointer to the back buffer (we use an int pointer here, since we can safely assume a 32-bit pixel format)
UInt32* start = (UInt32*)bmp.BackBuffer.ToPointer();
// Move the starting pixel to the x offset
start += linebounds.Left;
if (previous.HasValue)
{
MyLine previoussegment = new MyLine(previous.Value, from);
// Loop through the relevant portion of the image and figure out which pixels need to be erased
for (int y = linebounds.Top; y < linebounds.Bottom; y++)
{
UInt32* pixel = start + bmp.BackBufferStride / sizeof(UInt32) * y;
for (int x = linebounds.Left; x < linebounds.Right; x++)
{
if (line.DistanceSquared(x, y) <= area && previoussegment.DistanceSquared(x, y) > area)
{
if (color.A == 255)
*pixel = flatcolor;
else
AlphaBlended(pixel, color);
}
// Move to the next pixel
pixel++;
}
}
}
else
{
// Loop through the relevant portion of the image and figure out which pixels need to be erased
for (int y = linebounds.Top; y < linebounds.Bottom; y++)
{
UInt32* pixel = start + bmp.BackBufferStride / sizeof(UInt32) * y;
for (int x = linebounds.Left; x < linebounds.Right; x++)
{
if (line.DistanceSquared(x, y) <= area)
{
if (color.A == 255)
*pixel = flatcolor;
else
AlphaBlended(pixel, color);
}
// Move to the next pixel
pixel++;
}
}
}
bmp.AddDirtyRect(new Int32Rect(linebounds.Left, linebounds.Top, linebounds.Width, linebounds.Height));
bmp.Unlock();
}
public static unsafe void Test2(WriteableBitmap bmp, Point from, Point to, Color color, int size)
{
Random r = new Random();
AirbrushDots = 500;
AirbrushDotRadius = 2;
if (bmp == null)
{
return;
}
bmp.Lock();
// Create a line segment representation
LineSegment segment = new LineSegment(from, to);
// Get a bounding box for the painted area
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox segmentbounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
segmentbounds.AddPoint((int)from.X, (int)from.Y, size + AirbrushDotRadius);
segmentbounds.AddPoint((int)to.X, (int)to.Y, size + AirbrushDotRadius);
segmentbounds.Clip(bitmapbounds);
UInt32 *start = (UInt32 *)bmp.BackBuffer.ToPointer();
int stride = bmp.BackBufferStride / sizeof(UInt32);
// Move from 'from' to 'to' along timestep intervals, with one dot painted per interval
for (int i = 0; i < AirbrushDots; i++)
{
int x, y;
segment.Interpolate(i, AirbrushDots, out x, out y);
int dist = r.Next() % size;
double angle = r.NextDouble() * 2 * Math.PI;
double dx = Math.Cos(angle) * dist;
double dy = Math.Sqrt(dist * dist - dx * dx);
if (angle > Math.PI)
{
dy = -dy;
}
int bx = x + (int)dx;
int by = y + (int)dy;
//세로로 rainbow
if (i < 50)
{
if ((i % 5) == 0)
{
color = Colors.Red;
// color = Color.FromArgb(20, 132, 200, 249);
bx = x + 0;
by = y + 0;
}
if ((i % 5) == 1)
{
color = Colors.Red;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y + 3;
}
if ((i % 5) == 2)
{
color = Colors.Red;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y - 3;
}
if ((i % 5) == 3)
{
color = Colors.Red;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y + 6;
}
if ((i % 5) == 4)
{
color = Colors.Red;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y - 6;
}
}
if (i >= 50 && i < 100)
{
if ((i % 5) == 0)
{
color = Colors.Orange;
// color = Color.FromArgb(20, 132, 200, 249);
bx = x + 0;
by = y + 0;
}
if ((i % 5) == 1)
{
color = Colors.Orange;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y + 3;
}
if ((i % 5) == 2)
{
color = Colors.Orange;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y - 3;
}
if ((i % 5) == 3)
{
color = Colors.Orange;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y + 6;
}
if ((i % 5) == 4)
{
color = Colors.Orange;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y - 6;
}
}
if (i >= 100 && i < 150)
{
if ((i % 5) == 0)
{
color = Colors.Yellow;
// color = Color.FromArgb(20, 132, 200, 249);
bx = x + 0;
by = y + 0;
}
if ((i % 5) == 1)
{
color = Colors.Yellow;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y + 3;
}
if ((i % 5) == 2)
{
color = Colors.Yellow;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y - 3;
}
if ((i % 5) == 3)
{
color = Colors.Yellow;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y + 6;
}
if ((i % 5) == 4)
{
color = Colors.Yellow;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y - 6;
}
}
if (i >= 150 && i < 200)
{
if ((i % 5) == 0)
{
color = Colors.Green;
// color = Color.FromArgb(20, 132, 200, 249);
bx = x + 0;
by = y + 0;
}
if ((i % 5) == 1)
{
color = Colors.Green;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y + 3;
}
if ((i % 5) == 2)
{
color = Colors.Green;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y - 3;
}
if ((i % 5) == 3)
{
color = Colors.Green;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y + 6;
}
if ((i % 5) == 4)
{
color = Colors.Green;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y - 6;
}
}
if (i >= 200 && i < 250)
{
if ((i % 5) == 0)
{
color = Colors.Blue;
// color = Color.FromArgb(20, 132, 200, 249);
bx = x + 0;
by = y + 0;
}
if ((i % 5) == 1)
{
color = Colors.Blue;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y + 3;
}
if ((i % 5) == 2)
{
color = Colors.Blue;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y - 3;
}
if ((i % 5) == 3)
{
color = Colors.Blue;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y + 6;
}
if ((i % 5) == 4)
{
color = Colors.Blue;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y - 6;
}
}
if (i >= 250 && i < 300)
{
if ((i % 5) == 0)
{
color = Colors.Indigo;
// color = Color.FromArgb(20, 132, 200, 249);
bx = x + 0;
by = y + 0;
}
if ((i % 5) == 1)
{
color = Colors.Indigo;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y + 3;
}
if ((i % 5) == 2)
{
color = Colors.Indigo;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y - 3;
}
if ((i % 5) == 3)
{
color = Colors.Indigo;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y + 6;
}
if ((i % 5) == 4)
{
color = Colors.Indigo;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y - 6;
}
}
if (i >= 300 && i < 350)
{
if ((i % 5) == 0)
{
color = Colors.BlueViolet;
// color = Color.FromArgb(20, 132, 200, 249);
bx = x + 0;
by = y + 0;
}
if ((i % 5) == 1)
{
color = Colors.BlueViolet;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y + 3;
}
if ((i % 5) == 2)
{
color = Colors.BlueViolet;
//color = Color.FromArgb(15, 133, 199, 247);
bx = x + 0;
by = y - 3;
}
if ((i % 5) == 3)
{
color = Colors.BlueViolet;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y + 6;
}
if ((i % 5) == 4)
{
color = Colors.BlueViolet;
//color = Color.FromArgb(10, 124, 201, 255);
bx = x + 0;
by = y - 6;
}
}
BoundingBox dotbounds = new BoundingBox();
dotbounds.AddPoint(bx, by, AirbrushDotRadius);
dotbounds.Clip(bitmapbounds);
for (int k = dotbounds.Top, row = 0; k < dotbounds.Bottom; k++, y++, row++)
{
for (int j = dotbounds.Left, col = 0; j < dotbounds.Right; j++, col++)
{
WriteAlphaBlended(start + stride * k + j, Color.FromArgb(AirbrushDotKernel[row][col], color.R, color.G, color.B));
}
}
}
bmp.AddDirtyRect(new Int32Rect(segmentbounds.Left, segmentbounds.Top, segmentbounds.Width, segmentbounds.Height));
bmp.Unlock();
}
public static unsafe void Brush(WriteableBitmap bmp, Point from, Point to, Point?previous, Color color, int size)
{
if (bmp == null)
{
return;
}
bmp.Lock();
int sizesize = size * size;
uint flatcolor = (uint)((int)color.A << 24) + (uint)((int)color.R << 16) + (uint)((int)color.G << 8) + color.B;
LineSegment linesegment = new LineSegment(from, to);
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox segmentbounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
segmentbounds.AddPoint((int)from.X, (int)from.Y, size);
segmentbounds.AddPoint((int)to.X, (int)to.Y, size);
segmentbounds.Clip(bitmapbounds);
UInt32 *start = (UInt32 *)bmp.BackBuffer.ToPointer();
start += segmentbounds.Left;
if (previous.HasValue)
{
LineSegment previoussegment = new LineSegment(previous.Value, from);
for (int y = segmentbounds.Top; y < segmentbounds.Bottom; y++)
{
UInt32 *pixel = start + bmp.BackBufferStride / sizeof(UInt32) * y;
for (int x = segmentbounds.Left; x < segmentbounds.Right; x++)
{
if (linesegment.DistanceSquared(x, y) <= sizesize && previoussegment.DistanceSquared(x, y) > sizesize)
{
if (color.A == 255)
{
*pixel = flatcolor;
}
else
{
WriteAlphaBlended(pixel, color);
}
}
pixel++;
}
}
}
else
{
for (int y = segmentbounds.Top; y < segmentbounds.Bottom; y++)
{
UInt32 *pixel = start + bmp.BackBufferStride / sizeof(UInt32) * y;
for (int x = segmentbounds.Left; x < segmentbounds.Right; x++)
{
if (linesegment.DistanceSquared(x, y) <= sizesize)
{
if (color.A == 255)
{
*pixel = flatcolor;
}
else
{
WriteAlphaBlended(pixel, color);
}
}
pixel++;
}
}
}
bmp.AddDirtyRect(new Int32Rect(segmentbounds.Left, segmentbounds.Top, segmentbounds.Width, segmentbounds.Height));
bmp.Unlock();
}
public static unsafe void Test4(WriteableBitmap bmp, Point from, Point to, Color color, int size)
{
AirbrushDots = 1000;
AirbrushDotRadius = 4;
if (bmp == null)
{
return;
}
bmp.Lock();
// Create a line segment representation
LineSegment segment = new LineSegment(from, to);
// Get a bounding box for the painted area
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox segmentbounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
segmentbounds.AddPoint((int)from.X, (int)from.Y, size + 500 + AirbrushDotRadius);
segmentbounds.AddPoint((int)to.X, (int)to.Y, size + 500 + AirbrushDotRadius);
segmentbounds.Clip(bitmapbounds);
UInt32 *start = (UInt32 *)bmp.BackBuffer.ToPointer();
int stride = bmp.BackBufferStride / sizeof(UInt32);
// Move from 'from' to 'to' along timestep intervals, with one dot painted per interval
for (int i = 0; i < AirbrushDots; i++)
{
int x, y;
segment.Interpolate(i, AirbrushDots, out x, out y);
//int dist =size;
//double angle =2 * Math.PI;
//double dx = Math.Cos(angle) * dist;
//double dy = Math.Sqrt(dist * dist - dx * dx);
//if (angle > Math.PI) dy = -dy;
int bx = x;
int by = y;
if (i % 4 == 0)
{
bx = x + 500;
by = y + 500;
}
else if (i % 4 == 1)
{
bx = x - 500;
by = y + 500;
}
else if (i % 4 == 2)
{
bx = x + 500;
by = y - 500;
}
else if (i % 4 == 3)
{
bx = x - 500;
by = y - 500;
}
//switch (i % 4)
//{
// case 0:
// bx=
//}
BoundingBox dotbounds = new BoundingBox();
dotbounds.AddPoint(bx, by, AirbrushDotRadius);
dotbounds.Clip(bitmapbounds);
for (int k = dotbounds.Top, row = 0; k < dotbounds.Bottom; k++, y++, row++)
{
for (int j = dotbounds.Left, col = 0; j < dotbounds.Right; j++, col++)
{
WriteAlphaBlended(start + stride * k + j, Color.FromArgb(AirbrushDotKernel[row][col], color.R, color.G, color.B));
}
}
}
bmp.AddDirtyRect(new Int32Rect(segmentbounds.Left, segmentbounds.Top, segmentbounds.Width, segmentbounds.Height));
bmp.Unlock();
}
public static unsafe void Butterfly(WriteableBitmap bmp, Point from, Point to, Color color, int size)
{
AirbrushDots = 2000;
AirbrushDotRadius = 3;
Random r = new Random();
if (bmp == null)
{
return;
}
bmp.Lock();
// Create a line segment representation
LineSegment segment = new LineSegment(from, to);
// Get a bounding box for the painted area
BoundingBox bitmapbounds = new BoundingBox();
BoundingBox segmentbounds = new BoundingBox();
bitmapbounds.AddPoint(0, 0, 0);
bitmapbounds.AddPoint(bmp.PixelWidth - 1, bmp.PixelHeight - 1, 0);
segmentbounds.AddPoint((int)from.X, (int)from.Y, 1500);
segmentbounds.AddPoint((int)to.X, (int)to.Y, 1500);
segmentbounds.Clip(bitmapbounds);
UInt32 *start = (UInt32 *)bmp.BackBuffer.ToPointer();
int stride = bmp.BackBufferStride / sizeof(UInt32);
// Move from 'from' to 'to' along timestep0 intervals, with one dot painted per interval
int ran;
if (size < 10)
{
ran = (r.Next() % (300 - size * 20)) + 1;
}
else if (size < 20)
{
ran = (r.Next() % (450 - size * 20)) + 1;
}
else if (size < 30)
{
ran = (r.Next() % (600 - size * 30)) + 1;
}
else if (size < 40)
{
ran = (r.Next() % (1400 - size * 20)) + 1;
}
else
{
ran = (r.Next() % (3200 - size * 20)) + 1;
}
for (int i = 0; i < AirbrushDots; i++)
{
int x, y;
temp = i;
segment.Interpolate(i, AirbrushDots, out x, out y);
int bx = x + temp;
int by = y - (temp * temp) / ran;
if (temp % 4 == 0)
{
if (ran % 2 == 0)
{
bx = x + (temp * temp) / ran;
by = y - temp;
}
else
{
bx = x + temp;
by = y - (temp * temp) / ran;
}
}
else if (temp % 4 == 1)
{
if (ran % 2 == 0)
{
bx = x + (temp * temp) / ran;
by = y + temp;
}
else
{
bx = x + temp;
by = y + (temp * temp) / ran;
}
}
else if (temp % 4 == 2)
{
if (ran % 2 == 0)
{
bx = x - (temp * temp) / ran;
by = y + temp;
}
else
{
bx = x - temp;
by = y + (temp * temp) / ran;
}
}
else if (temp % 4 == 3)
{
if (ran % 2 == 0)
{
bx = x - (temp * temp) / ran;
by = y - temp;
}
else
{
bx = x - temp;
by = y - (temp * temp) / ran;
}
}
if (Math.Sqrt((bx - x) * (bx - x) + (by - y) * (by - y)) > size * 10)
{
continue;
}
BoundingBox dotbounds = new BoundingBox();
dotbounds.AddPoint(bx, by, AirbrushDotRadius);
dotbounds.Clip(bitmapbounds);
for (int k = dotbounds.Top, row = 0; k < dotbounds.Bottom; k++, y++, row++)
{
for (int j = dotbounds.Left, col = 0; j < dotbounds.Right; j++, col++)
{
WriteAlphaBlended(start + stride * k + j, Color.FromArgb(AirbrushDotKernel[row][col], color.R, color.G, color.B));
}
}
}
bmp.AddDirtyRect(new Int32Rect(segmentbounds.Left, segmentbounds.Top, segmentbounds.Width, segmentbounds.Height));
bmp.Unlock();
}