82811cf489
Seems to be a fairly niche type, but some people (apparently mostly in the automotive space) use it. Also improves the handling of IES files in general and lets Cycles accept IES files that are technically violating the spec - which seems to be most of them... Pull Request: https://projects.blender.org/blender/blender/pulls/114689
47 lines
1.1 KiB
C++
47 lines
1.1 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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#ifndef __UTIL_IES_H__
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#define __UTIL_IES_H__
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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() {}
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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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#endif /* __UTIL_IES_H__ */
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