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/************************************************************************************
AstroMenace (Hardcore 3D space shooter with spaceship upgrade possibilities)
Copyright © 2006-2013 Michael Kurinnoy, Viewizard
AstroMenace 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.
AstroMenace 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 AstroMenace. If not, see <http://www.gnu.org/licenses/>.
Web Site: http://www.viewizard.com/
Project: http://sourceforge.net/projects/openastromenace/
E-mail: viewizard@viewizard.com
*************************************************************************************/
#include "CollisionDetection.h"
//-----------------------------------------------------------------------------
// проверка на попадание точки в треугольник
//-----------------------------------------------------------------------------
bool vw_PointInTriangle(VECTOR3D point, VECTOR3D pa, VECTOR3D pb, VECTOR3D pc)
{
float TotalAngel = 0.0f;
VECTOR3D V1 = point - pa;
VECTOR3D V2 = point - pb;
VECTOR3D V3 = point - pc;
// сдесь применяем высокоточное вычисление, иначе снаряды могут "проскакивать"
V1.NormalizeHi();
V2.NormalizeHi();
V3.NormalizeHi();
TotalAngel += acosf(V1*V2);
TotalAngel += acosf(V2*V3);
TotalAngel += acosf(V3*V1);
if (fabsf(TotalAngel - 2*3.14159265f) <= 0.005f) return true;
return false;
}
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