public bool MouseMoveOnSkin(ColorGrabber pixels, Skin skin, int x, int y, bool incremental)
{
if (x == _oldPixel.X && y == _oldPixel.Y)
{
return(false);
}
IsPreview = false;
Brush brush = Brushes.SelectedBrush;
int startX = x - (brush.Width / 2);
int startY = y - (brush.Height / 2);
for (int ry = 0; ry < brush.Height; ++ry)
{
for (int rx = 0; rx < brush.Width; ++rx)
{
int xx = startX + rx;
int yy = startY + ry;
if (xx < 0 || xx >= skin.Width ||
yy < 0 || yy >= skin.Height)
{
continue;
}
if (brush[rx, ry] == 0.0f)
{
continue;
}
ColorPixel c = pixels[xx, yy];
Color oldColor = Color.FromArgb(c.Alpha, c.Red, c.Green, c.Blue);
ColorManager.RGBColor color =
(((Control.ModifierKeys & Keys.Shift) != 0)
? Editor.MainForm.ColorPanel.UnselectedColor
: Editor.MainForm.ColorPanel.SelectedColor).RGB;
byte maxAlpha = color.A;
var alphaToAdd = (float)(byte)(brush[rx, ry] * 255 * (Editor.MainForm.ColorPanel.SelectedColor.RGB.A / 255.0f));
if (!incremental && _undo.Points.ContainsKey(new Point(xx, yy)) &&
_undo.Points[new Point(xx, yy)].Item2.TotalAlpha >= maxAlpha)
{
continue;
}
if (!incremental && _undo.Points.ContainsKey(new Point(xx, yy)) &&
_undo.Points[new Point(xx, yy)].Item2.TotalAlpha + alphaToAdd >= maxAlpha)
{
alphaToAdd = maxAlpha - _undo.Points[new Point(xx, yy)].Item2.TotalAlpha;
}
color = Color.FromArgb((byte)(alphaToAdd), color);
Color newColor = BlendColor(color, oldColor);
if (oldColor == newColor)
{
continue;
}
if (_undo.Points.ContainsKey(new Point(xx, yy)))
{
Tuple <Color, ColorAlpha> tupl = _undo.Points[new Point(xx, yy)];
_undo.Points[new Point(xx, yy)] = Tuple.Create(tupl.Item1, new ColorAlpha(newColor, tupl.Item2.TotalAlpha + alphaToAdd));
}
else
{
_undo.Points.Add(new Point(xx, yy), Tuple.Create(oldColor, new ColorAlpha(newColor, alphaToAdd)));
}
pixels[xx, yy] = new ColorPixel(newColor.R | (newColor.G << 8) | (newColor.B << 16) | (newColor.A << 24));
}
}
_oldPixel = new Point(x, y);
return(true);
}