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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "titanic/star_control/star_ref.h"
namespace Titanic {
void CBaseStarRef::process(CSurfaceArea *surface, CStarCamera *camera) {
if (_stars->_data.empty())
return;
const double MAX_VAL = 1.0e9 * 1.0e9;
FPose pose = camera->getPose();
double threshold = camera->getThreshold();
double vWidth2 = (double)surface->_width * 0.5;
double vHeight2 = (double)surface->_height * 0.5;
FVector vTemp, vector1, vector2;
double val1, green, blue, red;
for (int idx = 0; idx < _stars->size(); ++idx) {
const CBaseStarEntry &se = _stars->_data[idx];
vTemp = se._position;
vector1._x = vTemp._x * pose._row1._x + vTemp._y * pose._row2._x + vTemp._z * pose._row3._x + pose._vector._x;
vector1._y = vTemp._x * pose._row1._y + vTemp._y * pose._row2._y + vTemp._z * pose._row3._y + pose._vector._y;
vector1._z = vTemp._x * pose._row1._z + vTemp._y * pose._row2._z + vTemp._z * pose._row3._z + pose._vector._z;
double hyp = vector1._x * vector1._x + vector1._y * vector1._y + vector1._z * vector1._z;
if (vector1._z > threshold && hyp >= 1.0e12 && hyp < MAX_VAL) {
vector2 = camera->getRelativePos(2, vector1);
const Common::Point pt((int)(vector2._x + vWidth2 - -0.5),
(int)(vector2._y + vHeight2 - -0.5));
if (pt.y >= 0 && pt.y < (surface->_height - 1) &&
pt.x >= 0 && pt.x < (surface->_width - 1)) {
val1 = sqrt(hyp);
if (val1 >= 100000.0)
val1 = 1.0 - (val1 - 100000.0) / 1000000000.0;
else
val1 = 1.0;
red = val1 * (double)se._red;
green = val1 * (double)se._green;
blue = val1 * (double)se._blue;
int count = 0;
if (red < 0.0)
++count;
if (green < 0.0)
++count;
if (blue < 0.0)
++count;
if (count < 3) {
if (!check(pt, idx))
break;
}
}
}
}
}
/*------------------------------------------------------------------------*/
bool CStarRef1::check(const Common::Point &pt, int index) {
Common::Rect r(pt.x - 2, pt.y - 2, pt.x + 2, pt.y + 2);
if (r.contains(_position)) {
_index = index;
return false;
} else {
return true;
}
}
/*------------------------------------------------------------------------*/
bool CStarRefArray::check(const Common::Point &pt, int index) {
if (_index >= (int)_positions->size())
// Positions array full, so ignore
return false;
CStarPosition &sp = (*_positions)[_index++];
sp.x = pt.x;
sp.y = pt.y;
sp._index1 = sp._index2 = index;
return true;
}
/*------------------------------------------------------------------------*/
bool CStarRef3::check(const Common::Point &pt, int index) {
++_index;
return true;
}
} // End of namespace Titanic
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