Lines Matching full:touch

266    void TouchProcessor::CharacteriseRadialDeviation(Touch& touch) {
267        // Compute center of touch.
269        // touch.num_position_estimates is at most 100
270        for (size_t i = 0; i < touch.num_position_estimates; i++) {
271            sum_x_w += touch.position_estimates[i].position.x * 255;
272            sum_y_w += touch.position_estimates[i].position.y * 255;
277        touch.center = Point{
284        for (size_t i = 0; i < touch.num_position_estimates; i++) {
285            int32_t dx = touch.position_estimates[i].position.x - touch.center.x;
286            int32_t dy = touch.position_estimates[i].position.y - touch.center.y;
291        touch.features[static_cast<size_t>(Touch::Feature::kRadialDeviation)]
303 the exact same ``touch.center`` results. Likewise, if we avoid the ``* 255`` when
309    void TouchProcessor::CharacteriseRadialDeviation(Touch& touch) {
310      // Compute center of touch.
311      int32_t sum_x_w = 0, sum_y_w = 0, sum_w = touch.num_position_estimates;
312      // touch.num_position_estimates is at most 100
313      for (size_t i = 0; i < touch.num_position_estimates; i++) {
314          sum_x_w += touch.position_estimates[i].position.x;
315          sum_y_w += touch.position_estimates[i].position.y;
319      touch.center = Point{
326      for (size_t i = 0; i < touch.num_position_estimates; i++) {
327          int32_t dx = touch.position_estimates[i].position.x - touch.center.x;
328          int32_t dy = touch.position_estimates[i].position.y - touch.center.y;
333      touch.features[static_cast<size_t>(Touch::Feature::kRadialDeviation)]
342 that the fractional part is negligible. ``touch.features[i]`` also isn’t
349    touch.features[static_cast<size_t>(Touch::Feature::kRadialDeviation)]