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Touch: Add Calibration class.

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Matrix transforms coordinates from digitizer to display.
This commit is contained in:
Jared Boone
2016-07-27 14:01:20 -07:00
parent 8d330784b2
commit c022a72ef4
2 changed files with 49 additions and 0 deletions
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14
firmware/application/touch.cpp
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@@ -60,6 +60,20 @@ Metrics calculate_metrics(const Frame& frame) {
};
}
ui::Point Calibration::translate(const DigitizerPoint& p) const {
static constexpr range_t<int32_t> x_range { 0, 240 - 1 };
static constexpr range_t<int32_t> y_range { 0, 320 - 1 };
const int32_t x = (a * p.x + b * p.y + c) / k;
const int32_t y = (d * p.x + e * p.y + f) / k;
const auto x_clipped = x_range.clip(x);
const auto y_clipped = y_range.clip(y);
return {
static_cast<ui::Coord>(x_clipped),
static_cast<ui::Coord>(y_clipped)
};
}
void Manager::feed(const Frame& frame) {
// touch_debounce.feed(touch_raw);
const auto touch_raw = frame.touch;