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Implement more features and fix bugs

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This commit is contained in:
ISSOtm
2022-03-01 19:41:27 +01:00
committed by Eldred Habert
parent d30e507270
commit 6e406b22bb
4 changed files with 35 additions and 19 deletions
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16
include/gfx/convert.hpp
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@@ -23,9 +23,14 @@ struct Rgba {
Rgba(uint8_t r, uint8_t g, uint8_t b, uint8_t a) : red(r), green(g), blue(b), alpha(a) {}
Rgba(uint32_t rgba) : red(rgba), green(rgba >> 8), blue(rgba >> 16), alpha(rgba >> 24) {}
operator uint32_t() const {
operator uint32_t() const { return toCSS(); }
/**
* Returns this RGBA as a 32-bit number that can be printed in hex (`%08x`) to yield its CSS
* representation
*/
uint32_t toCSS() const {
auto shl = [](uint8_t val, unsigned shift) { return static_cast<uint32_t>(val) << shift; };
return shl(red, 0) | shl(green, 8) | shl(blue, 16) | shl(alpha, 24);
return shl(red, 24) | shl(green, 16) | shl(blue, 8) | shl(alpha, 0);
}
bool operator!=(Rgba const &other) const {
return static_cast<uint32_t>(*this) != static_cast<uint32_t>(other);
@@ -39,12 +44,15 @@ struct Rgba {
*/
static constexpr uint16_t transparent = 0b1'00000'00000'00000;
static constexpr uint8_t transparency_threshold = 5; // TODO: adjust this
/**
* All alpha values strictly below this will be considered transparent
*/
static constexpr uint8_t opacity_threshold = 0xF0; // TODO: adjust this
/**
* Computes the equivalent CGB color, respects the color curve depending on options
*/
uint16_t cgbColor() const {
if (alpha > 0xFF - transparency_threshold)
if (alpha < opacity_threshold)
return transparent;
if (options.useColorCurve) {
assert(!"TODO");