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9e8809a2f3
There are some values that are read from stream and never changed by the calculations. Since they are used as parameter on expensive math functions like cos() and tan(), it would be worth to pre-calculate their values and use them when needed.
117 lines
2.8 KiB
C++
117 lines
2.8 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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#ifndef BLADERUNNER_FOG_H
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#define BLADERUNNER_FOG_H
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#include "bladerunner/color.h"
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#include "bladerunner/matrix.h"
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namespace Common {
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class ReadStream;
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}
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namespace BladeRunner {
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class SetEffects;
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class Fog {
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friend class SetEffects;
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friend class Debugger;
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protected:
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Common::String _name;
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int _frameCount;
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int _animatedParameters;
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Matrix4x3 _matrix;
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Matrix4x3 _inverted;
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Color _fogColor;
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float _fogDensity;
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float *_animationData;
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float *_m11ptr;
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float *_m12ptr;
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float *_m13ptr;
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float *_m14ptr;
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float *_m21ptr;
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float *_m22ptr;
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float *_m23ptr;
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float *_m24ptr;
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float *_m31ptr;
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float *_m32ptr;
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float *_m33ptr;
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float *_m34ptr;
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Fog *_next;
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public:
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Fog();
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virtual ~Fog();
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virtual void read(Common::ReadStream *stream, int frameCount) = 0;
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virtual void calculateCoeficient(Vector3 position, Vector3 viewPosition, float *coeficient) = 0;
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void reset();
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void setupFrame(int frame);
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protected:
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int readCommon(Common::ReadStream *stream);
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void readAnimationData(Common::ReadStream *stream, int count);
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};
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class FogSphere : public Fog {
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private:
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float _radius_sq;
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public:
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FogSphere():_radius_sq(0.0f) {};
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void read(Common::ReadStream *stream, int frameCount) override;
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void calculateCoeficient(Vector3 position, Vector3 viewPosition, float *coeficient) override;
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};
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class FogCone : public Fog {
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private:
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float _tan_coneAngle_sq;
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float _cos_coneAngle;
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public:
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FogCone():_tan_coneAngle_sq(0.0f), _cos_coneAngle(1.0f) {};
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void read(Common::ReadStream *stream, int frameCount) override;
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void calculateCoeficient(Vector3 position, Vector3 viewPosition, float *coeficient) override;
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};
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class FogBox : public Fog {
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private:
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Vector3 _size;
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public:
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FogBox():_size() {};
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void read(Common::ReadStream *stream, int frameCount) override;
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void calculateCoeficient(Vector3 position, Vector3 viewPosition, float *coeficient) override;
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};
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} // End of namespace BladeRunner
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#endif
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