/***************************************************
Copyright (c) 2020 Luis Llamas
(www.luisllamas.es)

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero 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 Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <http://www.gnu.org/licenses
****************************************************/

#include "LookAssistant.h"
#include "Face.h"
#include "EyeTransformation.h"

LookAssistant::LookAssistant(Face& face) : _face(face), Timer(4000)
{
	Timer.Start();
}

void LookAssistant::LookAt(float x, float y)
{
	int16_t moveX_x;
	int16_t moveY_x;
	int16_t moveY_y;
	float scaleY_x;
	float scaleY_y;

	moveX_x = -25 * x;
	moveY_x = -3 * x;
	moveY_y = 20 * y;
	scaleY_x = 1.0 - x * 0.2;
	scaleY_y = 1.0 - (y > 0 ? y : -y) * 0.4;

	transformation.MoveX = moveX_x;
	transformation.MoveY = moveY_y; //moveY_x + moveY_y;
	transformation.ScaleX = 1.0;
	transformation.ScaleY = scaleY_x * scaleY_y;
	_face.RightEye.Transformation.SetDestin(transformation);

	moveY_x = +3 * x;
	scaleY_x = 1.0 + x * 0.2;
	transformation.MoveX = moveX_x;
	transformation.MoveY = + moveY_y; //moveY_x + moveY_y;
	transformation.ScaleX = 1.0;
	transformation.ScaleY = scaleY_x * scaleY_y;
	_face.LeftEye.Transformation.SetDestin(transformation);

	_face.RightEye.Transformation.Animation.Restart();
	_face.LeftEye.Transformation.Animation.Restart();
}

void LookAssistant::Update()
{
	Timer.Update();

	if (Timer.IsExpired())
	{
		Timer.Reset();
		auto x = random(-50, 50);
		auto y = random(-50, 50);
		LookAt((float)x  / 100, (float)y / 100);

	}

}