Team2890/allwpilib
4
0
Fork 0
mirror of https://github.com/wpilibsuite/allwpilib synced 2026-06-26 01:51:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

[wpilib] Make Color::HexString() constexpr (#5985)

Browse Source 
Related improvements to wpi::ct_string:
* Implicitly convert to std::string
* Add operator== for std::string, std::string_view, and const Char*
This commit is contained in:
Tyler Veness
2023-12-04 21:20:49 -08:00
committed by GitHub
parent 2676b77873
commit 90757b9e90
7 changed files with 105 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
wpilibc/src/main/native/include/frc/util/Color.h
View File

@@ -11,6 +11,7 @@
#include <fmt/core.h>
#include <wpi/StringExtras.h>
#include <wpi/ct_string.h>
namespace frc {
@@ -851,7 +852,16 @@ class Color {
*
* @return a string of the format <tt>\#RRGGBB</tt>
*/
std::string HexString() const;
constexpr auto HexString() const {
const int r = 255.0 * red;
const int g = 255.0 * green;
const int b = 255.0 * blue;
return wpi::ct_string<char, std::char_traits<char>, 7>{
{'#', wpi::hexdigit(r / 16), wpi::hexdigit(r % 16),
wpi::hexdigit(g / 16), wpi::hexdigit(g % 16), wpi::hexdigit(b / 16),
wpi::hexdigit(b % 16)}};
}
double red = 0.0;
double green = 0.0;

8
wpilibc/src/main/native/include/frc/util/Color8Bit.h
View File

@@ -11,6 +11,7 @@
#include <fmt/core.h>
#include <wpi/StringExtras.h>
#include <wpi/ct_string.h>
#include "Color.h"
@@ -107,7 +108,12 @@ class Color8Bit {
*
* @return a string of the format <tt>\#RRGGBB</tt>
*/
std::string HexString() const;
constexpr auto HexString() const {
return wpi::ct_string<char, std::char_traits<char>, 7>{
{'#', wpi::hexdigit(red / 16), wpi::hexdigit(red % 16),
wpi::hexdigit(green / 16), wpi::hexdigit(green % 16),
wpi::hexdigit(blue / 16), wpi::hexdigit(blue % 16)}};
}
int red = 0;
int green = 0;