Apple-2-Tools
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Rgb2Hires
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Giving the best group to black and white

This commit is contained in:
Christophe Meneboeuf 2021-02-14 22:29:16 +01:00
parent 57b9ef69f5
commit c5408f7bee
3 changed files with 16 additions and 2 deletions
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Loader_Apple2/disk.dsk
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15
Rgb2Hires_PC/src/HiRes.cpp
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@ -58,10 +58,11 @@ namespace RgbToHires {
pair<BlockHr::eColorGroup, BlockHr::eColorGroup> BlockHr::getGroup(const BlockPixel& block) const
{
pair<eColorGroup, eColorGroup> groups{ GROUP_1, GROUP_1 };
pair<eColorGroup, eColorGroup> groups{ UNDEF, UNDEF };
//1st block group, including the last semi-pixel
for (auto i = 0u; i < 4u; ++i) {
if (block[i] == GREEN || block[i] == VIOLET) {
groups.first = GROUP_1;
break;
}
else if (block[i] == ORANGE || block[i] == BLUE) {
@ -72,6 +73,7 @@ namespace RgbToHires {
//2nd block group, excluding the first semi-pixel
for (auto i = 4u; i < 7u; ++i) {
if (block[i] == GREEN || block[i] == VIOLET) {
groups.second = GROUP_1;
break;
}
else if (block[i] == ORANGE || block[i] == BLUE) {
@ -79,6 +81,17 @@ namespace RgbToHires {
break;
}
}
// if only black or white pixel: groups are still undefined
if (groups.first == UNDEF) { // 1st 3.5-pixels were black or white
groups.first = groups.second;
}
if (groups.second == UNDEF) { // 2nd 35-pixels were black or white
groups.second = groups.first;
}
if (groups.first == UNDEF) { // all the 7-pixels were black or white
groups.first = GROUP_1;
groups.second = GROUP_1;
}
return groups;
}

3
Rgb2Hires_PC/src/HiRes.h
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@ -63,7 +63,8 @@ namespace RgbToHires
/// @brief color group as defined in Apple's documentation
enum eColorGroup {
GROUP_1,
GROUP_2
GROUP_2,
UNDEF // black and white can be group1 or group2
};
/// @brief Returns the color group of these two 3.5 pixel blocks
std::pair<eColorGroup, eColorGroup> getGroup(const BlockPixel&) const;