Git-Mirrors/portapack-mayhem
1
0
Fork 0
mirror of https://github.com/eried/portapack-mayhem.git synced 2024-10-01 01:26:06 -04:00
Code Issues Packages Projects Releases Wiki Activity

Touch: Use calibration matrix.

Browse Source
This commit is contained in:
Jared Boone 2016-07-27 14:08:02 -07:00
parent e813db16fd
commit 7492d50f0b
2 changed files with 7 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
firmware/application/touch.cpp
View File

@ -111,10 +111,8 @@ void Manager::feed(const Frame& frame) {
// TODO: Add touch pressure hysteresis?
touch_pressure = (metrics.r < r_touch_threshold);
if( touch_pressure ) {
const float x = width_pixels * (metrics.x - calib_x_low) / calib_x_range;
filter_x.feed(x);
const float y = height_pixels * (calib_y_high - metrics.y) / calib_y_range;
filter_y.feed(y);
filter_x.feed(metrics.x * 1024);
filter_y.feed(metrics.y * 1024);
}
} else {
filter_x.reset();
@ -146,4 +144,8 @@ void Manager::feed(const Frame& frame) {
}
}
ui::Point Manager::filtered_point() const {
return calibration().translate({ filter_x.value(), filter_y.value() });
}
} /* namespace touch */

18
firmware/application/touch.hpp
View File

@ -220,21 +220,10 @@ private:
TouchDetected,
};
static constexpr uint32_t width_pixels = 240;
static constexpr uint32_t height_pixels = 320;
static constexpr float r_touch_threshold = 0x1000;
static constexpr size_t touch_count_threshold { 4 };
static constexpr uint32_t touch_stable_bound { 4 };
static constexpr float calib_x_low = 0.07f;
static constexpr float calib_x_high = 0.94f;
static constexpr float calib_x_range = calib_x_high - calib_x_low;
static constexpr float calib_y_low = 0.04f;
static constexpr float calib_y_high = 0.91f;
static constexpr float calib_y_range = calib_y_high - calib_y_low;
// Ensure filter length is equal or less than touch_count_threshold,
// or coordinates from the last touch will be in the initial averages.
Filter<touch_count_threshold> filter_x;
@ -249,12 +238,7 @@ private:
&& filter_y.stable(touch_stable_bound);
}
ui::Point filtered_point() const {
return {
static_cast<ui::Coord>(filter_x.value()),
static_cast<ui::Coord>(filter_y.value())
};
}
ui::Point filtered_point() const;
void touch_started() {
fire_event(ui::TouchEvent::Type::Start);