//---------------------------------------------------------------------
// Render the alterations to the layer
//---------------------------------------------------------------------
protected override void DrawStep(Layer layer, Point position, float pPressure)
{
int size = MathExt.RoundToInt(options.size * pPressure);
int halfSize = size / 2;
Rectangle toolArea = new Rectangle(0, 0, size, size);
int halfSizeSquared = halfSize * halfSize;
Color color = options.color;
// Set the tool size rect to the locate on of the point to be painted
Point centre = new Point((position.X - halfSize),
(position.Y - halfSize));
toolArea.Location = centre;
// Get the area to be painted
Rectangle areaToPaint = new Rectangle();
areaToPaint = Rectangle.Intersect(layer.GetArea(), toolArea);
// Get bitmap data to draw to
Bitmap bmp = layer.GetBitmap();
// Lock the bitmap memory area
System.Drawing.Imaging.BitmapData data = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
// Set up iteration of unsafe byte data
int stride = data.Stride;
// Do shit with pointers
unsafe
{
byte *ptr = (byte *)data.Scan0;
// Check this is not a null area
if (!areaToPaint.IsEmpty)
{
// Go through the draw area and set the pixels as they should be
int len = toolArea.Height * toolArea.Width;
for (int i = 0; i < len; i++)
{
int x = i % toolArea.Width;
int y = i / toolArea.Width;
// Check if the pixel is inside the circle
if ((((halfSize - x) * (halfSize - x)) + ((halfSize - y) * (halfSize - y)) <= halfSizeSquared) && layer.GetArea().Contains(x + toolArea.X, y + toolArea.Y))
{
// Set the pixel RGB channels individually
ptr[((x + toolArea.X) * 4) + (y + toolArea.Y) * stride] = color.B;
ptr[((x + toolArea.X) * 4) + (y + toolArea.Y) * stride + 1] = color.G;
ptr[((x + toolArea.X) * 4) + (y + toolArea.Y) * stride + 2] = color.R;
ptr[((x + toolArea.X) * 4) + (y + toolArea.Y) * stride + 3] = color.A;
}
}
}
}
// Unlock the bitmap memory area
bmp.UnlockBits(data);
}
public void Clear(string pLayerID)
{
// TODO: Let the user pick the starting colour
Layer l = GetLayer(pLayerID);
using (Graphics graphics = Graphics.FromImage(l.GetBitmap())) {
graphics.Clear(Color.White);
}
}
//---------------------------------------------------------------------
// Render the alterations to the layer
//---------------------------------------------------------------------
protected override void DrawStep(Layer layer, Point position, float pPressure)
{
int size = MathExt.RoundToInt(options.size * pPressure);
int halfSize = size / 2;
Rectangle toolArea = new Rectangle(0, 0, size, size);
int halfSizeSquared = halfSize * halfSize;
Color color = options.color;
// Set the tool size rect to the locate on of the point to be painted
Point centre = new Point((position.X - halfSize),
(position.Y - halfSize));
toolArea.Location = centre;
// Get the area to be painted
Rectangle areaToPaint = new Rectangle();
areaToPaint = Rectangle.Intersect(layer.GetArea(), toolArea);
// Get bitmap data to draw to
Bitmap bmp = layer.GetBitmap();
// Lock the bitmap memory area
System.Drawing.Imaging.BitmapData data = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
// Set up iteration of unsafe byte data
int stride = data.Stride;
// Do shit with pointers
unsafe
{
byte* ptr = (byte*)data.Scan0;
// Check this is not a null area
if (!areaToPaint.IsEmpty)
{
// Go through the draw area and set the pixels as they should be
int len = toolArea.Height * toolArea.Width;
for (int i = 0; i < len; i++ )
{
int x = i % toolArea.Width;
int y = i/toolArea.Width;
// Check if the pixel is inside the circle
if ((((halfSize - x) * (halfSize - x)) + ((halfSize - y) * (halfSize - y)) <= halfSizeSquared) && layer.GetArea().Contains(x + toolArea.X, y + toolArea.Y))
{
// Set the pixel RGB channels individually
ptr[((x + toolArea.X) * 4) + (y + toolArea.Y) * stride] = color.B;
ptr[((x + toolArea.X) * 4) + (y + toolArea.Y) * stride + 1] = color.G;
ptr[((x + toolArea.X) * 4) + (y + toolArea.Y) * stride + 2] = color.R;
ptr[((x + toolArea.X) * 4) + (y + toolArea.Y) * stride + 3] = color.A;
}
}
}
}
// Unlock the bitmap memory area
bmp.UnlockBits(data);
}