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/*
* Copyright (C) 2003 Robert Kooima
*
* NEVERBALL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
extern "C" {
#include "config.h"
}
#include <Leap.h>
using namespace Leap;
static Controller leapctrl;
extern "C" {
void tilt_init(void)
{
// nothing to do
}
void tilt_free(void)
{
// nothing to do
}
int tilt_stat(void)
{
return leapctrl.isConnected();
}
int tilt_get_button(int *b, int *s)
{
static bool btn_l1 = 0;
static bool btn_r1 = 0;
static bool btn_start = 0;
HandList hands = leapctrl.frame().hands();
Hand hand;
Finger thumb;
float angle;
bool cond;
if (!tilt_stat() || hands.count() != 1)
{
return 0;
}
hand = hands.frontmost();
thumb = hand.fingers().fingerType(Finger::TYPE_THUMB)[0];
angle = hand.direction().angleTo(thumb.direction()) * 180.0f / 3.14159f;
if ((cond = (angle < 20.0f && hand.isRight()) ||
(angle > 55.0f && hand.isLeft())) != btn_l1)
{
*b = config_get_d(CONFIG_JOYSTICK_BUTTON_L1);
return (*s = btn_l1 = cond) + 1;
}
else if ((cond = (angle > 55.0f && hand.isRight()) ||
(angle < 20.0f && hand.isLeft())) != btn_r1)
{
*b = config_get_d(CONFIG_JOYSTICK_BUTTON_R1);
return (*s = btn_r1 = cond) + 1;
}
else if ((cond = hand.grabStrength() == 1.0f) != btn_start)
{
*b = config_get_d(CONFIG_JOYSTICK_BUTTON_START);
return (*s = btn_start = cond) + 1;
}
return 0;
}
float tilt_get_x(void)
{
HandList hands = leapctrl.frame().hands();
if (!tilt_stat() || hands.count() != 1)
{
return 0.0f;
}
return -hands.frontmost().direction().pitch() * 180.0f / 3.14159f + 10.0f;
}
float tilt_get_z(void)
{
HandList hands = leapctrl.frame().hands();
if (!tilt_stat() || hands.count() != 1)
{
return 0.0f;
}
return -hands.frontmost().palmNormal().roll() * 180.0f / 3.14159f;
}
}
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