Get Angle for two lines
/*
* Copyright (C) 2010- Peer internet solutions
*
* This file is part of mixare.
*
* 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/>
*/
//package org.icare;
class MixUtils {
public static boolean pointInside(float P_x, float P_y, float r_x,
float r_y, float r_w, float r_h) {
return (P_x > r_x && P_x < r_x + r_w && P_y > r_y && P_y < r_y + r_h);
}
public static float getAngle(float center_x, float center_y, float post_x,
float post_y) {
float tmpv_x = post_x - center_x;
float tmpv_y = post_y - center_y;
float d = (float) Math.sqrt(tmpv_x * tmpv_x + tmpv_y * tmpv_y);
float cos = tmpv_x / d;
float angle = (float) Math.toDegrees(Math.acos(cos));
angle = (tmpv_y < 0) ? angle * -1 : angle;
return angle;
}
}
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