public void Pixmap(Pixmap pixmap,
int x,
int y,
Rect src_rect,
float width = -1,
float height = -1,
byte color_key = Palette.TransparentColor,
byte tint = Palette.NoColor,
bool flip = false)
{
_blit_surface_dirty = true;
var sw = _current_blit_surface.Width;
var pw = pixmap.Width;
var surface_colors = _current_blit_surface.Colors;
var pixmap_colors = pixmap.Colors;
var clip_rect = _clip_rect;
if (src_rect.IsEmpty)
{
src_rect = new Rect(0, 0, pixmap.Width, pixmap.Height);
}
if (width < 1)
{
width = src_rect.W;
}
if (height < 1)
{
height = src_rect.H;
}
var factor_w = width / src_rect.W;
var factor_h = height / src_rect.H;
var min_x = Math.Max(x, clip_rect.Left);
var min_y = Math.Max(y, clip_rect.Top);
var max_x = Math.Min(x + width, clip_rect.Right);
var max_y = Math.Min(y + height, clip_rect.Bottom);
if (!flip)
{
for (var i = min_x; i < max_x; ++i)
{
for (var j = min_y; j < max_y; ++j)
{
var surf_idx = (i + j * sw);
var pix_idx = ((src_rect.X + (int)((i - x) / factor_w)) + (src_rect.Y + (int)((j - y) / factor_h)) * pw);
var pix_color = pixmap_colors[pix_idx];
if (pix_color == color_key)
{
continue;
}
if (tint != Palette.NoColor)
{
pix_color = tint;
}
surface_colors[surf_idx] = pix_color;
}
}
}
else
{
var start_pix_x = src_rect.Right - 1;
for (var i = min_x; i < max_x; ++i)
{
for (var j = min_y; j < max_y; ++j)
{
var surf_idx = (i + j * sw);
var pix_idx = (start_pix_x - (int)((i - x) / factor_w) + (src_rect.Y + (int)((j - y) / factor_h)) * pw);
var pix_color = pixmap_colors[pix_idx];
if (pix_color == color_key)
{
continue;
}
if (tint != Palette.NoColor)
{
pix_color = tint;
}
surface_colors[surf_idx] = pix_color;
}
}
}
}
public void SetSurface(Pixmap pixmap)
{
_current_blit_surface = pixmap ?? _blit_surface;
_clip_rect = new Rect(0, 0, _current_blit_surface.Width, _current_blit_surface.Height);
}
