/*****************************************************************************
 *
 * grail - Gesture Recognition And Instantiation Library
 *
 * Copyright (C) 2010 Canonical Ltd.
 * Copyright (C) 2010 Henrik Rydberg <rydberg@bitmath.org>
 *
 * This program 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 3 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.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 ****************************************************************************/

#include "grail-inserter.h"
#include "grail-impl.h"
#include <math.h>

int grail_get_contacts(const struct grail *ge,
		       struct grail_contact *touch, int max_touch)
{
	const struct touch_dev *dev = &ge->impl->dev;
	const struct gesture_inserter *gin = ge->gin;
	const struct touch_frame *frame = &dev->frame;
	int i;
	if (frame->nactive < max_touch)
		max_touch = frame->nactive;
	for (i = 0; i < max_touch; i++) {
		struct grail_contact *t = &touch[i];
		const struct touch *ct = frame->active[i];
		t->id = ct->id;
		t->tool_type = ct->tool_type;
		t->pos.x = gin_prop_x(gin, ct->x);
		t->pos.y = gin_prop_y(gin, ct->y);
		t->touch_major = gin->scale_r * ct->touch_major;
		t->touch_minor = gin->scale_r * ct->touch_minor;
		t->width_major = gin->scale_r * ct->width_major;
		t->width_minor = gin->scale_r * ct->width_minor;
		t->angle = touch_angle(dev, ct->orientation);
		t->pressure = touch_pressure(dev, ct->pressure);
	}
	return max_touch;
}