Panda3D

iesDataset.h
1 /**
2 *
3 * RenderPipeline
4 *
5 * Copyright (c) 2014-2016 tobspr <tobias.springer1@gmail.com>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 *
25 */
26
27 #ifndef IESDATASET_H
28 #define IESDATASET_H
29
30 #include "pandabase.h"
31 #include "pta_float.h"
32 #include "pointerToArray.h"
33 #include "texture.h"
34 #include "pnmImage.h"
35
36 NotifyCategoryDecl(iesdataset, EXPORT_CLASS, EXPORT_TEMPL);
37
38
39 /**
40 * @brief This class generates a LUT from IES data.
41 * @details This class is used by the IESLoader to generate a LUT texture which
42 * is used in the shaders to perform IES lighting. It takes a set of vertical
43 * and horizontal angles, as well as a set of candela values, which then are
44 * lineary interpolated onto a 2D LUT Texture.
45 */
46 class IESDataset {
47 PUBLISHED:
48 IESDataset();
49
50 void set_vertical_angles(const PTA_float &vertical_angles);
51 void set_horizontal_angles(const PTA_float &horizontal_angles);
52 void set_candela_values(const PTA_float &candela_values);
53
54 void generate_dataset_texture_into(Texture* dest_tex, size_t z) const;
55
56 public:
57
58 float get_candela_value(float vertical_angle, float horizontal_angle) const;
59 float get_candela_value_from_index(size_t vertical_angle_idx, size_t horizontal_angle_idx) const;
60 float get_vertical_candela_value(size_t horizontal_angle_idx, float vertical_angle) const;
61
62 private:
63 PTA_float _vertical_angles;
64 PTA_float _horizontal_angles;
65 PTA_float _candela_values;
66 };
67
68 #endif // IESDATASET_H
IESDataset
This class generates a LUT from IES data.
Definition: iesDataset.h:46
IESDataset::generate_dataset_texture_into
void generate_dataset_texture_into(Texture *dest_tex, size_t z) const
Generates the IES LUT.
Definition: iesDataset.cxx:214
IESDataset::set_candela_values
void set_candela_values(const PTA_float &candela_values)
Sets the candela values.
Definition: iesDataset.cxx:73
IESDataset::get_candela_value_from_index
float get_candela_value_from_index(size_t vertical_angle_idx, size_t horizontal_angle_idx) const
Internal method to access the candela data.
Definition: iesDataset.cxx:89
IESDataset::set_vertical_angles
void set_vertical_angles(const PTA_float &vertical_angles)
Sets the vertical angles of the dataset.
Definition: iesDataset.cxx:50
IESDataset::get_candela_value
float get_candela_value(float vertical_angle, float horizontal_angle) const
Samples the dataset at the given position.
Definition: iesDataset.cxx:106
IESDataset::get_vertical_candela_value
float get_vertical_candela_value(size_t horizontal_angle_idx, float vertical_angle) const
Fetches a vertical candela value.
Definition: iesDataset.cxx:166
IESDataset::set_horizontal_angles
void set_horizontal_angles(const PTA_float &horizontal_angles)
Sets the horizontal angles of the dataset.
Definition: iesDataset.cxx:61
Texture
Represents a texture object, which is typically a single 2-d image but may also represent a 1-d or 3-...
Definition: texture.h:71
pandabase.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pnmImage.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pointerToArray.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pta_float.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
texture.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.