117 lines
3.5 KiB
C++
117 lines
3.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "titanic/star_control/star_ref.h"
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#include "titanic/star_control/camera.h"
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#include "titanic/star_control/surface_area.h"
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namespace Titanic {
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void CBaseStarRef::process(CSurfaceArea *surface, CCamera *camera) {
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if (_stars->_data.empty())
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return;
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const double MAX_VAL = 1.0e9 * 1.0e9;
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FPose pose = camera->getPose();
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double threshold = camera->getFrontClip();
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double vWidth2 = (double)surface->_width * 0.5;
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double vHeight2 = (double)surface->_height * 0.5;
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FVector vTemp, vector1, vector2;
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double val1, green, blue, red;
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for (int idx = 0; idx < _stars->size(); ++idx) {
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const CBaseStarEntry &se = _stars->_data[idx];
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vTemp = se._position;
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vector1._x = vTemp._x * pose._row1._x + vTemp._y * pose._row2._x + vTemp._z * pose._row3._x + pose._vector._x;
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vector1._y = vTemp._x * pose._row1._y + vTemp._y * pose._row2._y + vTemp._z * pose._row3._y + pose._vector._y;
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vector1._z = vTemp._x * pose._row1._z + vTemp._y * pose._row2._z + vTemp._z * pose._row3._z + pose._vector._z;
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double hyp = vector1._x * vector1._x + vector1._y * vector1._y + vector1._z * vector1._z;
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if (vector1._z > threshold && hyp >= 1.0e12 && hyp < MAX_VAL) {
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vector2 = camera->getRelativePos(2, vector1);
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const Common::Point pt((int)(vector2._x + vWidth2 - -0.5),
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(int)(vector2._y + vHeight2 - -0.5));
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if (pt.y >= 0 && pt.y < (surface->_height - 1) &&
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pt.x >= 0 && pt.x < (surface->_width - 1)) {
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val1 = sqrt(hyp);
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if (val1 >= 100000.0)
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val1 = 1.0 - (val1 - 100000.0) / 1000000000.0;
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else
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val1 = 1.0;
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red = val1 * (double)se._red;
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green = val1 * (double)se._green;
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blue = val1 * (double)se._blue;
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int count = 0;
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if (red < 0.0)
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++count;
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if (green < 0.0)
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++count;
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if (blue < 0.0)
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++count;
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if (count < 3) {
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if (!check(pt, idx))
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break;
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}
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}
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}
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}
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}
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/*------------------------------------------------------------------------*/
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bool CStarRef1::check(const Common::Point &pt, int index) {
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Common::Rect r(pt.x - 2, pt.y - 2, pt.x + 2, pt.y + 2);
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if (r.contains(_position)) {
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_index = index;
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return false;
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} else {
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return true;
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}
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}
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/*------------------------------------------------------------------------*/
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bool CStarRefArray::check(const Common::Point &pt, int index) {
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if (_index >= (int)_positions->size())
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// Positions array full, so ignore
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return false;
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CStarPosition &sp = (*_positions)[_index++];
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sp.x = pt.x;
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sp.y = pt.y;
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sp._index1 = sp._index2 = index;
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return true;
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}
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/*------------------------------------------------------------------------*/
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bool CStarRef3::check(const Common::Point &pt, int index) {
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++_index;
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return true;
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}
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} // End of namespace Titanic
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