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improve Pixel_in_screen_overlay_with_opt_preview() (Mode5/Raster)

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now it is possible to paint in layer 5 with one of the color
defined as INK 0 to 3 in one of the first 4 layers.
This commit is contained in:
Thomas Bernard 2018-11-22 23:21:23 +01:00
parent 8a7bd06d44
commit 9fb2270f58
1 changed files with 36 additions and 14 deletions
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50
src/graph.c
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@ -3477,24 +3477,46 @@ static void Pixel_in_screen_underlay_with_opt_preview(word x,word y,byte color,i
}
}
/// Paint a a single pixel in image and on screen : in a layer that acts as a layer-selector (mode 5).
/// Paint a single pixel in the layer 5 of mode 5
///
/// used when @ref IMAGE_MODE_MODE5 or @ref IMAGE_MODE_RASTER is active.
///
/// The layer 5 acts as a layer-selector.
/// it contains INK 0 to 3 which select one of the layer from 1 to 4, the
/// display color is retrieved from this one.
static void Pixel_in_screen_overlay_with_opt_preview(word x,word y,byte color,int preview)
{
if (color<4)
{
// Paste in layer
Pixel_in_current_layer(x, y, color);
// Paste in depth buffer
*(Main_visible_image_depth_buffer.Image+x+y*Main.image_width)=color;
// Fetch pixel color from the target raster layer
if (Main.layers_visible & (1 << color))
color=*(Main.backups->Pages->Image[color].Pixels + x+y*Main.image_width);
// Draw that color on the visible image buffer
*(x+y*Main.image_width+Main_screen)=color;
byte ink; // 0 to 3
if (preview)
Pixel_preview(x,y,color);
if (color < 4)
ink = color; // the argument was the ink!
else
{
// search for this color in the 4 defined inks
for (ink = 0; ink < 4; ink++)
{
if (color == Main.backups->Pages->Image[ink].Pixels[x+y*Main.image_width])
break;
}
if (ink >= 4)
return; // not found ? do nothing
}
// Paste ink in layer 5
Pixel_in_current_layer(x, y, ink);
// Paste in depth buffer
*(Main_visible_image_depth_buffer.Image+x+y*Main.image_width) = ink;
// Fetch pixel color from the target raster layer
if (Main.layers_visible & (1 << ink))
color=*(Main.backups->Pages->Image[ink].Pixels + x+y*Main.image_width);
else
color = ink;
// Draw that color on the visible image buffer
*(x+y*Main.image_width+Main_screen)=color;
if (preview)
Pixel_preview(x,y,color);
}
// end of constraints group