67 lines
2.4 KiB
C++
67 lines
2.4 KiB
C++
/**
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*
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* RenderPipeline
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*
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* Copyright (c) 2014-2016 tobspr <tobias.springer1@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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#pragma once
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#include "pandabase.h"
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#include "pta_float.h"
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#include "pointerToArray.h"
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#include "texture.h"
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#include "pnmImage.h"
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NotifyCategoryDecl(iesdataset, EXPORT_CLASS, EXPORT_TEMPL);
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/**
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* @brief This class generates a LUT from IES data.
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* @details This class is used by the IESLoader to generate a LUT texture which
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* is used in the shaders to perform IES lighting. It takes a set of vertical
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* and horizontal angles, as well as a set of candela values, which then are
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* lineary interpolated onto a 2D LUT Texture.
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*/
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class IESDataset {
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PUBLISHED:
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IESDataset();
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void set_vertical_angles(const PTA_float &vertical_angles);
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void set_horizontal_angles(const PTA_float &horizontal_angles);
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void set_candela_values(const PTA_float &candela_values);
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void generate_dataset_texture_into(Texture* dest_tex, size_t z) const;
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public:
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float get_candela_value(float vertical_angle, float horizontal_angle) const;
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float get_candela_value_from_index(size_t vertical_angle_idx, size_t horizontal_angle_idx) const;
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float get_vertical_candela_value(size_t horizontal_angle_idx, float vertical_angle) const;
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private:
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PTA_float _vertical_angles;
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PTA_float _horizontal_angles;
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PTA_float _candela_values;
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};
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