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/*
* Copyright 2011-2018 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __UTIL_IES_H__
#define __UTIL_IES_H__
#include "util/util_param.h"
#include "util/util_vector.h"
CCL_NAMESPACE_BEGIN
class IESFile {
public:
IESFile() {}
~IESFile();
int packed_size();
void pack(float *data);
bool load(ustring ies);
void clear();
protected:
bool parse(ustring ies);
bool process();
bool process_type_b();
bool process_type_c();
/* The brightness distribution is stored in spherical coordinates.
* The horizontal angles correspond to to theta in the regular notation
* and always span the full range from 0° to 360°.
* The vertical angles correspond to phi and always start at 0°. */
vector<float> v_angles, h_angles;
/* The actual values are stored here, with every entry storing the values
* of one horizontal segment. */
vector<vector<float> > intensity;
/* Types of angle representation in IES files. Currently, only B and C are supported. */
enum IESType {
TYPE_A = 3,
TYPE_B = 2,
TYPE_C = 1
} type;
};
CCL_NAMESPACE_END
#endif /* __UTIL_IES_H__ */
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