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improve bleed edge

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This commit is contained in:
GenevensiS
2025-12-17 08:16:11 +01:00
parent 2d5ec064df
commit 80a7dccdf1
2 changed files with 99 additions and 187 deletions
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src/data/format/image.cpp
+49 -93
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@@ -58,116 +58,72 @@ Image export_image(const SetP& set, const CardP& card, const bool write_metadata
int width = img.GetWidth(), height = img.GetHeight();
/// add print bleed edge
if (size.width < 1.0 || size.height < 1.0) {
queue_message(MESSAGE_ERROR, _("Cannot add bleed edge to empty image"));
if (size.width < bleed + 2 || size.height < bleed + 2) {
queue_message(MESSAGE_ERROR, _("Image too small to add bleed edge"));
}
else {
if (!img.HasAlpha()) img.InitAlpha();
Byte* pixels = img.GetData();
Byte* alpha = img.GetAlpha();
// fill top left corner
int pixel;
int x_start = 0;
int y_start = 0;
int ref = bleed + bleed * width;
for (int y = 0; y < bleed; ++y) {
for (int x = 0; x < bleed; ++x) {
pixel = x_start + x + (y_start + y) * width;
pixels[3 * pixel + 0] = pixels[3 * ref + 0];
pixels[3 * pixel + 1] = pixels[3 * ref + 1];
pixels[3 * pixel + 2] = pixels[3 * ref + 2];
alpha[pixel] = alpha[ref];
}
}
// fill top right corner
x_start = width - bleed;
y_start = 0;
ref = x_start - 1 + bleed * width;
for (int y = 0; y < bleed; ++y) {
for (int x = 0; x < bleed; ++x) {
pixel = x_start + x + (y_start + y) * width;
pixels[3 * pixel + 0] = pixels[3 * ref + 0];
pixels[3 * pixel + 1] = pixels[3 * ref + 1];
pixels[3 * pixel + 2] = pixels[3 * ref + 2];
alpha[pixel] = alpha[ref];
}
}
// fill bottom left corner
x_start = 0;
y_start = height - bleed;
ref = bleed + (y_start - 1) * width;
for (int y = 0; y < bleed; ++y) {
for (int x = 0; x < bleed; ++x) {
pixel = x_start + x + (y_start + y) * width;
pixels[3 * pixel + 0] = pixels[3 * ref + 0];
pixels[3 * pixel + 1] = pixels[3 * ref + 1];
pixels[3 * pixel + 2] = pixels[3 * ref + 2];
alpha[pixel] = alpha[ref];
}
}
// fill bottom right corner
x_start = width - bleed;
y_start = height - bleed;
ref = (x_start - 1) + (y_start - 1) * width;
for (int y = 0; y < bleed; ++y) {
for (int x = 0; x < bleed; ++x) {
pixel = x_start + x + (y_start + y) * width;
pixels[3 * pixel + 0] = pixels[3 * ref + 0];
pixels[3 * pixel + 1] = pixels[3 * ref + 1];
pixels[3 * pixel + 2] = pixels[3 * ref + 2];
alpha[pixel] = alpha[ref];
}
}
int pixel, mirror, x_start, y_start, x_size, y_size;
// fill left border
x_start = 0;
y_start = bleed;
for (int y = 0; y < height - bleed - bleed; ++y) {
ref = bleed + (y_start + y) * width;
for (int x = 0; x < bleed; ++x) {
pixel = x_start + x + (y_start + y) * width;
pixels[3 * pixel + 0] = pixels[3 * ref + 0];
pixels[3 * pixel + 1] = pixels[3 * ref + 1];
pixels[3 * pixel + 2] = pixels[3 * ref + 2];
alpha[pixel] = alpha[ref];
}
}
// fill top border
x_start = bleed;
y_start = 0;
for (int y = 0; y < bleed; ++y) {
for (int x = 0; x < width - bleed - bleed; ++x) {
pixel = x_start + x + (y_start + y) * width;
ref = x_start + x + bleed * width;
pixels[3 * pixel + 0] = pixels[3 * ref + 0];
pixels[3 * pixel + 1] = pixels[3 * ref + 1];
pixels[3 * pixel + 2] = pixels[3 * ref + 2];
alpha[pixel] = alpha[ref];
x_size = bleed;
y_size = height - bleed - bleed;
for (int y = 0; y < y_size; ++y) {
for (int x = 0; x < x_size; ++x) {
pixel = x_start + x + (y_start + y) * width;
mirror = 2 * bleed - x + (y_start + y) * width;
pixels[3 * pixel + 0] = pixels[3 * mirror + 0];
pixels[3 * pixel + 1] = pixels[3 * mirror + 1];
pixels[3 * pixel + 2] = pixels[3 * mirror + 2];
alpha[pixel] = alpha[mirror];
}
}
// fill right border
x_start = width - bleed;
y_start = bleed;
for (int y = 0; y < height - bleed - bleed; ++y) {
ref = width - bleed - 1 + (y_start + y) * width;
for (int x = 0; x < bleed; ++x) {
pixel = x_start + x + (y_start + y) * width;
pixels[3 * pixel + 0] = pixels[3 * ref + 0];
pixels[3 * pixel + 1] = pixels[3 * ref + 1];
pixels[3 * pixel + 2] = pixels[3 * ref + 2];
alpha[pixel] = alpha[ref];
x_size = bleed;
y_size = height - bleed - bleed;
for (int y = 0; y < y_size; ++y) {
for (int x = 0; x < x_size; ++x) {
pixel = x_start + x + (y_start + y) * width;
mirror = - 2 + x_start - x + (y_start + y) * width;
pixels[3 * pixel + 0] = pixels[3 * mirror + 0];
pixels[3 * pixel + 1] = pixels[3 * mirror + 1];
pixels[3 * pixel + 2] = pixels[3 * mirror + 2];
alpha[pixel] = alpha[mirror];
}
}
// fill top border
x_start = 0;
y_start = 0;
x_size = width;
y_size = bleed;
for (int y = 0; y < y_size; ++y) {
for (int x = 0; x < x_size; ++x) {
pixel = x_start + x + ( y_start + y) * width;
mirror = x_start + x + (2 * bleed - y) * width;
pixels[3 * pixel + 0] = pixels[3 * mirror + 0];
pixels[3 * pixel + 1] = pixels[3 * mirror + 1];
pixels[3 * pixel + 2] = pixels[3 * mirror + 2];
alpha[pixel] = alpha[mirror];
}
}
// fill bottom border
x_start = bleed;
x_start = 0;
y_start = height - bleed;
for (int y = 0; y < bleed; ++y) {
for (int x = 0; x < width - bleed - bleed; ++x) {
pixel = x_start + x + (y_start + y) * width;
ref = x_start + x + (height - bleed - 1) * width;
pixels[3 * pixel + 0] = pixels[3 * ref + 0];
pixels[3 * pixel + 1] = pixels[3 * ref + 1];
pixels[3 * pixel + 2] = pixels[3 * ref + 2];
alpha[pixel] = alpha[ref];
x_size = width;
y_size = bleed;
for (int y = 0; y < y_size; ++y) {
for (int x = 0; x < x_size; ++x) {
pixel = x_start + x + ( y_start + y) * width;
mirror = x_start + x + (- 2 + y_start - y) * width;
pixels[3 * pixel + 0] = pixels[3 * mirror + 0];
pixels[3 * pixel + 1] = pixels[3 * mirror + 1];
pixels[3 * pixel + 2] = pixels[3 * mirror + 2];
alpha[pixel] = alpha[mirror];
}
}
}