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engines/cryomni3d/omni3d.h

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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 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/>.
+ *
+ */
+
+#ifndef CRYOMNI3D_OMNI3D_H
+#define CRYOMNI3D_OMNI3D_H
+
+#include "graphics/surface.h"
+
+namespace CryOmni3D {
+
+class Omni3DManager {
+public:
+	Omni3DManager() : _vfov(0), _alpha(0), _beta(0), _xSpeed(0), _ySpeed(0), _alphaMin(0), _alphaMax(0),
+		_betaMin(0), _betaMax(0), _helperValue(0), _dirty(true), _dirtyCoords(true),
+		_sourceSurface(nullptr) {}
+	virtual ~Omni3DManager();
+
+	void init(double hfov);
+
+	void setSourceSurface(const Graphics::Surface *surface) { _sourceSurface = surface; _dirty = true; }
+
+	void clearConstraints();
+	void setAlphaConstraints(double alphaMin, double alphaMax) { _alphaMin = alphaMin; _alphaMax = alphaMax; }
+	void setBetaMinConstraint(double betaMin) { _betaMin = betaMin; }
+	void setBetaMaxConstraint(double betaMax) { _betaMax = betaMax; }
+
+	void setAlpha(double alpha) { _alpha = alpha; _dirtyCoords = true; }
+	void setBeta(double beta) { _beta = beta; _dirtyCoords = true; }
+	void updateCoords(int xDelta, int yDelta, bool useOldSpeed);
+
+	double getAlpha() const { return _alpha; }
+	double getBeta() const { return _beta; }
+
+	Common::Point mapMouseCoords(const Common::Point &mouse);
+
+	bool hasSpeed() { return _xSpeed != 0. || _ySpeed != 0.; }
+	bool needsUpdate() { return _dirty || _dirtyCoords; }
+	const Graphics::Surface *getSurface();
+
+private:
+	void updateImageCoords();
+
+	double _vfov;
+
+	double _alpha, _beta;
+	double _xSpeed, _ySpeed;
+
+	double _alphaMin, _alphaMax;
+	double _betaMin, _betaMax;
+
+	int _imageCoords[2544];
+	double _squaresCoords[31][21];
+	double _hypothenusesH[31];
+	double _anglesH[31];
+	double _oppositeV[21];
+	double _helperValue;
+
+	bool _dirty;
+	bool _dirtyCoords;
+	const Graphics::Surface *_sourceSurface;
+	Graphics::Surface _surface;
+};
+
+} // End of namespace CryOmni3D
+
+#endif