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68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
#include "touch_mouse_joystick.h"
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#include <math.h>
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void TouchMouseJoustick::init(int32_t pos_x, int32_t pos_y, int32_t pos_r, int16_t usb_x, int16_t usb_y, int16_t usb_r)
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{
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TouchJoystick::init(pos_x, pos_y, pos_r, usb_x, usb_y, usb_r);
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this->control_type = CT_MOUSE_JOYSTICK;
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this->delta2usb = this->pos2usb * 30;
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}
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void TouchMouseJoustick::setTrackballFriction(float trackball_friction)
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{
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this->trackball_friction = trackball_friction;
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}
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int8_t TouchMouseJoustick::touch(int8_t fid, int32_t tx, int32_t ty, int32_t tdx, int32_t tdy)
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{
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if (finger_id != -1 && finger_id != fid)
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{
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return 0;
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}
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int8_t ret = 2;
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tx -= pos_x;
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ty -= pos_y;
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x = usb_x;
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y = usb_y;
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int32_t t2 = tx * tx + ty * ty;
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// outside the range
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if (t2 > pos_r2)
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{
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finger_id = -1;
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return 0;
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}
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else // inside the range
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{
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finger_id = fid;
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if (t2 <= dead_zone_outer2)
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{
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int32_t x32 = -tdx * delta2usb + usb_x;
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int32_t y32 = -tdy * delta2usb + usb_y;
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x = x32 > usb_r? usb_r : (x32 < -usb_r? -usb_r : x32);
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y = y32 > usb_r? usb_r : (y32 < -usb_r? -usb_r : y32);
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}
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else // in bounds outside of outer dead zone - edge spin
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{
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float len = sqrt(t2);
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x = (tx * dead_zone_outer / len) * pos2usb + usb_x;
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y = (ty * dead_zone_outer / len) * pos2usb + usb_y;
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}
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if (invert_x) x = 2 * usb_x - x;
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if (invert_y) y = 2 * usb_y - y;
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}
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return ret;
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}
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