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Create optimised integer functions to reduce CPU usage

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(cherry picked from commit a47bfe1da7bffe9f752e4c522e11593cce6dffd0)
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heurist1 2023-02-28 19:02:05 +00:00
parent b549d3a4f1
commit 567fee1d98
4 changed files with 85 additions and 0 deletions
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7
firmware/common/ui.cpp
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@ -21,6 +21,7 @@
#include "ui.hpp"
#include "sine_table.hpp"
#include "utility.hpp"
#include <algorithm>
@ -96,4 +97,10 @@ Point polar_to_point(float angle, uint32_t distance) {
sin_f32(DEG_TO_RAD(-angle) - (pi / 2)) * distance);
}
Point fast_polar_to_point(int32_t angle, uint32_t distance) {
//polar to compass with y negated for screen drawing
return Point((int16_sin_s4(((1<<16)*(-angle + 180))/360) * distance)/(1<<16),
(int16_sin_s4(((1<<16)*(-angle - 90))/360) * distance)/(1<<16));
}
} /* namespace ui */