44 lines
1.0 KiB
C++
44 lines
1.0 KiB
C++
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#pragma once
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#include "util/string.h"
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#include "util/vector.h"
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CCL_NAMESPACE_BEGIN
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class IESFile {
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public:
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IESFile() = default;
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~IESFile();
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int packed_size();
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void pack(float *data);
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bool load(const string &ies);
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void clear();
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protected:
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bool parse(const string &ies);
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bool process();
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void process_type_a();
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void process_type_b();
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void process_type_c();
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/* The brightness distribution is stored in spherical coordinates.
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* The horizontal angles correspond to theta in the regular notation
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* and always span the full range from 0° to 360°.
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* The vertical angles correspond to phi and always start at 0°. */
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vector<float> v_angles, h_angles;
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/* The actual values are stored here, with every entry storing the values
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* of one horizontal segment. */
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vector<vector<float>> intensity;
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/* Types of angle representation in IES files. */
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enum IESType { TYPE_A = 3, TYPE_B = 2, TYPE_C = 1 } type;
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};
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CCL_NAMESPACE_END
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